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	<title>Spurensuche im Nationalpark</title>
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	<description>Norderney mal ganz anders</description>
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	<title>Spurensuche im Nationalpark</title>
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	<item>
		<title>Futterneid bei Silbermöwen</title>
		<link>https://xn--dnenforschernorderney-8hc.de/uncategorized/futterneid-bei-silbermoewen/</link>
					<comments>https://xn--dnenforschernorderney-8hc.de/uncategorized/futterneid-bei-silbermoewen/#respond</comments>
		
		<dc:creator><![CDATA[Rolf]]></dc:creator>
		<pubDate>Mon, 11 Aug 2025 20:12:09 +0000</pubDate>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[Artenvielfalt]]></category>
		<category><![CDATA[Seestern]]></category>
		<category><![CDATA[Silbermöwe]]></category>
		<category><![CDATA[Verhalten]]></category>
		<guid isPermaLink="false">https://xn--dnenforschernorderney-8hc.de/?p=256</guid>

					<description><![CDATA[Junge Silbermöwen werden von ihren Eltern noch recht lange gefüttert, selbst wenn sie schon längst fliegen und sich ihre eigene Nahrung suchen können. Sie betteln regelrecht, mit einer hohen, fiependen Stimme, und sie klopfen mit ihren schwarzen Schnäbeln immer wieder an die roten Punkte auf den Schnäbeln der Elterntiere, in der Hoffnung, dass diese Futter [&#8230;]]]></description>
										<content:encoded><![CDATA[
<p class="wp-block-paragraph">Junge Silbermöwen werden von ihren Eltern noch recht lange gefüttert, selbst wenn sie schon längst fliegen und sich ihre eigene Nahrung suchen können. Sie betteln regelrecht, mit einer hohen, fiependen Stimme, und sie klopfen mit ihren schwarzen Schnäbeln immer wieder an die roten Punkte auf den Schnäbeln der Elterntiere, in der Hoffnung, dass diese Futter hervorwürgen. Aber irgendwann wird das den Eltern wohl auch zu lästig. So wie hier:</p>



<p class="wp-block-paragraph">Ein Jungvogel hat am Strand ständig gebettelt. Der Altvogel hat darauf nicht reagiert. Irgendwann hat der Jungvogel dann einen kleinen Seestern im Spülsaum gefunden und angefangen, ihn zu verschlingen. Das hat er auch fast geschafft, aber, aus welchem Grund auch immer, hat er ihn dann plötzlich wieder ausgespuckt. Was dann passierte, findet man hier.</p>



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<figure data-wp-context="{&quot;imageId&quot;:&quot;6aeb0042ab9a8&quot;}" data-wp-interactive="core/image" data-wp-key="6aeb0042ab9a8" class="wp-block-image size-large wp-lightbox-container"><img loading="lazy" decoding="async" width="1024" height="768" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on--click="actions.showLightbox" data-wp-on--load="callbacks.setButtonStyles" data-wp-on--pointerdown="actions.preloadImage" data-wp-on--pointerenter="actions.preloadImageWithDelay" data-wp-on--pointerleave="actions.cancelPreload" data-wp-on-window--resize="callbacks.setButtonStyles" data-id="232" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney8-1024x768.jpg" alt="" class="wp-image-232" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney8-1024x768.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney8-300x225.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney8-768x576.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney8-1536x1152.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney8-2048x1536.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><button
			class="lightbox-trigger"
			type="button"
			aria-haspopup="dialog"
			data-wp-bind--aria-label="state.thisImage.triggerButtonAriaLabel"
			data-wp-init="callbacks.initTriggerButton"
			data-wp-on--click="actions.showLightbox"
			data-wp-style--right="state.thisImage.buttonRight"
			data-wp-style--top="state.thisImage.buttonTop"
		>
			<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12">
				<path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" />
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<figure data-wp-context="{&quot;imageId&quot;:&quot;6aeb0042ac3ad&quot;}" data-wp-interactive="core/image" data-wp-key="6aeb0042ac3ad" class="wp-block-image size-large wp-lightbox-container"><img loading="lazy" decoding="async" width="1024" height="768" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on--click="actions.showLightbox" data-wp-on--load="callbacks.setButtonStyles" data-wp-on--pointerdown="actions.preloadImage" data-wp-on--pointerenter="actions.preloadImageWithDelay" data-wp-on--pointerleave="actions.cancelPreload" data-wp-on-window--resize="callbacks.setButtonStyles" data-id="233" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney9-1024x768.jpg" alt="" class="wp-image-233" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney9-1024x768.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney9-300x225.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney9-768x576.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney9-1536x1152.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney9-2048x1536.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><button
			class="lightbox-trigger"
			type="button"
			aria-haspopup="dialog"
			data-wp-bind--aria-label="state.thisImage.triggerButtonAriaLabel"
			data-wp-init="callbacks.initTriggerButton"
			data-wp-on--click="actions.showLightbox"
			data-wp-style--right="state.thisImage.buttonRight"
			data-wp-style--top="state.thisImage.buttonTop"
		>
			<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12">
				<path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" />
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<figure data-wp-context="{&quot;imageId&quot;:&quot;6aeb0042ad45b&quot;}" data-wp-interactive="core/image" data-wp-key="6aeb0042ad45b" class="wp-block-image size-large wp-lightbox-container"><img loading="lazy" decoding="async" width="1024" height="768" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on--click="actions.showLightbox" data-wp-on--load="callbacks.setButtonStyles" data-wp-on--pointerdown="actions.preloadImage" data-wp-on--pointerenter="actions.preloadImageWithDelay" data-wp-on--pointerleave="actions.cancelPreload" data-wp-on-window--resize="callbacks.setButtonStyles" data-id="234" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney10-1024x768.jpg" alt="" class="wp-image-234" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney10-1024x768.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney10-300x225.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney10-768x576.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney10-1536x1152.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney10-2048x1536.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><button
			class="lightbox-trigger"
			type="button"
			aria-haspopup="dialog"
			data-wp-bind--aria-label="state.thisImage.triggerButtonAriaLabel"
			data-wp-init="callbacks.initTriggerButton"
			data-wp-on--click="actions.showLightbox"
			data-wp-style--right="state.thisImage.buttonRight"
			data-wp-style--top="state.thisImage.buttonTop"
		>
			<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12">
				<path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" />
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<figure data-wp-context="{&quot;imageId&quot;:&quot;6aeb0042af3c3&quot;}" data-wp-interactive="core/image" data-wp-key="6aeb0042af3c3" class="wp-block-image size-large wp-lightbox-container"><img loading="lazy" decoding="async" width="1024" height="768" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on--click="actions.showLightbox" data-wp-on--load="callbacks.setButtonStyles" data-wp-on--pointerdown="actions.preloadImage" data-wp-on--pointerenter="actions.preloadImageWithDelay" data-wp-on--pointerleave="actions.cancelPreload" data-wp-on-window--resize="callbacks.setButtonStyles" data-id="235" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney11-1024x768.jpg" alt="" class="wp-image-235" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney11-1024x768.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney11-300x225.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney11-768x576.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney11-1536x1152.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney11-2048x1536.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><button
			class="lightbox-trigger"
			type="button"
			aria-haspopup="dialog"
			data-wp-bind--aria-label="state.thisImage.triggerButtonAriaLabel"
			data-wp-init="callbacks.initTriggerButton"
			data-wp-on--click="actions.showLightbox"
			data-wp-style--right="state.thisImage.buttonRight"
			data-wp-style--top="state.thisImage.buttonTop"
		>
			<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12">
				<path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" />
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<figure data-wp-context="{&quot;imageId&quot;:&quot;6aeb0042afef9&quot;}" data-wp-interactive="core/image" data-wp-key="6aeb0042afef9" class="wp-block-image size-large wp-lightbox-container"><img loading="lazy" decoding="async" width="1024" height="768" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on--click="actions.showLightbox" data-wp-on--load="callbacks.setButtonStyles" data-wp-on--pointerdown="actions.preloadImage" data-wp-on--pointerenter="actions.preloadImageWithDelay" data-wp-on--pointerleave="actions.cancelPreload" data-wp-on-window--resize="callbacks.setButtonStyles" data-id="236" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney12-1024x768.jpg" alt="" class="wp-image-236" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney12-1024x768.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney12-300x225.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney12-768x576.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney12-1536x1152.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney12-2048x1536.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><button
			class="lightbox-trigger"
			type="button"
			aria-haspopup="dialog"
			data-wp-bind--aria-label="state.thisImage.triggerButtonAriaLabel"
			data-wp-init="callbacks.initTriggerButton"
			data-wp-on--click="actions.showLightbox"
			data-wp-style--right="state.thisImage.buttonRight"
			data-wp-style--top="state.thisImage.buttonTop"
		>
			<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12">
				<path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" />
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<figure data-wp-context="{&quot;imageId&quot;:&quot;6aeb0042b0d04&quot;}" data-wp-interactive="core/image" data-wp-key="6aeb0042b0d04" class="wp-block-image size-large wp-lightbox-container"><img loading="lazy" decoding="async" width="1024" height="768" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on--click="actions.showLightbox" data-wp-on--load="callbacks.setButtonStyles" data-wp-on--pointerdown="actions.preloadImage" data-wp-on--pointerenter="actions.preloadImageWithDelay" data-wp-on--pointerleave="actions.cancelPreload" data-wp-on-window--resize="callbacks.setButtonStyles" data-id="237" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney13-1024x768.jpg" alt="" class="wp-image-237" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney13-1024x768.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney13-300x225.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney13-768x576.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney13-1536x1152.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney13-2048x1536.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><button
			class="lightbox-trigger"
			type="button"
			aria-haspopup="dialog"
			data-wp-bind--aria-label="state.thisImage.triggerButtonAriaLabel"
			data-wp-init="callbacks.initTriggerButton"
			data-wp-on--click="actions.showLightbox"
			data-wp-style--right="state.thisImage.buttonRight"
			data-wp-style--top="state.thisImage.buttonTop"
		>
			<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12">
				<path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" />
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<figure data-wp-context="{&quot;imageId&quot;:&quot;6aeb0042b2828&quot;}" data-wp-interactive="core/image" data-wp-key="6aeb0042b2828" class="wp-block-image size-large wp-lightbox-container"><img loading="lazy" decoding="async" width="1024" height="768" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on--click="actions.showLightbox" data-wp-on--load="callbacks.setButtonStyles" data-wp-on--pointerdown="actions.preloadImage" data-wp-on--pointerenter="actions.preloadImageWithDelay" data-wp-on--pointerleave="actions.cancelPreload" data-wp-on-window--resize="callbacks.setButtonStyles" data-id="238" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney14-1024x768.jpg" alt="" class="wp-image-238" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney14-1024x768.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney14-300x225.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney14-768x576.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney14-1536x1152.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney14-2048x1536.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><button
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			type="button"
			aria-haspopup="dialog"
			data-wp-bind--aria-label="state.thisImage.triggerButtonAriaLabel"
			data-wp-init="callbacks.initTriggerButton"
			data-wp-on--click="actions.showLightbox"
			data-wp-style--right="state.thisImage.buttonRight"
			data-wp-style--top="state.thisImage.buttonTop"
		>
			<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12">
				<path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" />
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<figure data-wp-context="{&quot;imageId&quot;:&quot;6aeb0042b431a&quot;}" data-wp-interactive="core/image" data-wp-key="6aeb0042b431a" class="wp-block-image size-large wp-lightbox-container"><img loading="lazy" decoding="async" width="1024" height="768" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on--click="actions.showLightbox" data-wp-on--load="callbacks.setButtonStyles" data-wp-on--pointerdown="actions.preloadImage" data-wp-on--pointerenter="actions.preloadImageWithDelay" data-wp-on--pointerleave="actions.cancelPreload" data-wp-on-window--resize="callbacks.setButtonStyles" data-id="239" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney15-1024x768.jpg" alt="" class="wp-image-239" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney15-1024x768.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney15-300x225.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney15-768x576.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney15-1536x1152.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney15-2048x1536.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><button
			class="lightbox-trigger"
			type="button"
			aria-haspopup="dialog"
			data-wp-bind--aria-label="state.thisImage.triggerButtonAriaLabel"
			data-wp-init="callbacks.initTriggerButton"
			data-wp-on--click="actions.showLightbox"
			data-wp-style--right="state.thisImage.buttonRight"
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		>
			<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12">
				<path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" />
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<figure data-wp-context="{&quot;imageId&quot;:&quot;6aeb0042b5332&quot;}" data-wp-interactive="core/image" data-wp-key="6aeb0042b5332" class="wp-block-image size-large wp-lightbox-container"><img loading="lazy" decoding="async" width="1024" height="768" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on--click="actions.showLightbox" data-wp-on--load="callbacks.setButtonStyles" data-wp-on--pointerdown="actions.preloadImage" data-wp-on--pointerenter="actions.preloadImageWithDelay" data-wp-on--pointerleave="actions.cancelPreload" data-wp-on-window--resize="callbacks.setButtonStyles" data-id="240" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney16-1024x768.jpg" alt="" class="wp-image-240" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney16-1024x768.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney16-300x225.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney16-768x576.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney16-1536x1152.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney16-2048x1536.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><button
			class="lightbox-trigger"
			type="button"
			aria-haspopup="dialog"
			data-wp-bind--aria-label="state.thisImage.triggerButtonAriaLabel"
			data-wp-init="callbacks.initTriggerButton"
			data-wp-on--click="actions.showLightbox"
			data-wp-style--right="state.thisImage.buttonRight"
			data-wp-style--top="state.thisImage.buttonTop"
		>
			<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12">
				<path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" />
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<figure data-wp-context="{&quot;imageId&quot;:&quot;6aeb0042b5d85&quot;}" data-wp-interactive="core/image" data-wp-key="6aeb0042b5d85" class="wp-block-image size-large wp-lightbox-container"><img loading="lazy" decoding="async" width="1024" height="768" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on--click="actions.showLightbox" data-wp-on--load="callbacks.setButtonStyles" data-wp-on--pointerdown="actions.preloadImage" data-wp-on--pointerenter="actions.preloadImageWithDelay" data-wp-on--pointerleave="actions.cancelPreload" data-wp-on-window--resize="callbacks.setButtonStyles" data-id="241" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney17-1024x768.jpg" alt="" class="wp-image-241" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney17-1024x768.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney17-300x225.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney17-768x576.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney17-1536x1152.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney17-2048x1536.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><button
			class="lightbox-trigger"
			type="button"
			aria-haspopup="dialog"
			data-wp-bind--aria-label="state.thisImage.triggerButtonAriaLabel"
			data-wp-init="callbacks.initTriggerButton"
			data-wp-on--click="actions.showLightbox"
			data-wp-style--right="state.thisImage.buttonRight"
			data-wp-style--top="state.thisImage.buttonTop"
		>
			<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12">
				<path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" />
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<figure data-wp-context="{&quot;imageId&quot;:&quot;6aeb0042b729d&quot;}" data-wp-interactive="core/image" data-wp-key="6aeb0042b729d" class="wp-block-image size-large wp-lightbox-container"><img loading="lazy" decoding="async" width="1024" height="768" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on--click="actions.showLightbox" data-wp-on--load="callbacks.setButtonStyles" data-wp-on--pointerdown="actions.preloadImage" data-wp-on--pointerenter="actions.preloadImageWithDelay" data-wp-on--pointerleave="actions.cancelPreload" data-wp-on-window--resize="callbacks.setButtonStyles" data-id="242" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney18-1024x768.jpg" alt="" class="wp-image-242" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney18-1024x768.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney18-300x225.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney18-768x576.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney18-1536x1152.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney18-2048x1536.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><button
			class="lightbox-trigger"
			type="button"
			aria-haspopup="dialog"
			data-wp-bind--aria-label="state.thisImage.triggerButtonAriaLabel"
			data-wp-init="callbacks.initTriggerButton"
			data-wp-on--click="actions.showLightbox"
			data-wp-style--right="state.thisImage.buttonRight"
			data-wp-style--top="state.thisImage.buttonTop"
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			<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12">
				<path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" />
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<figure data-wp-context="{&quot;imageId&quot;:&quot;6aeb0042b8108&quot;}" data-wp-interactive="core/image" data-wp-key="6aeb0042b8108" class="wp-block-image size-large wp-lightbox-container"><img loading="lazy" decoding="async" width="1024" height="768" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on--click="actions.showLightbox" data-wp-on--load="callbacks.setButtonStyles" data-wp-on--pointerdown="actions.preloadImage" data-wp-on--pointerenter="actions.preloadImageWithDelay" data-wp-on--pointerleave="actions.cancelPreload" data-wp-on-window--resize="callbacks.setButtonStyles" data-id="243" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney19-1024x768.jpg" alt="" class="wp-image-243" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney19-1024x768.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney19-300x225.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney19-768x576.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney19-1536x1152.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney19-2048x1536.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><button
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			type="button"
			aria-haspopup="dialog"
			data-wp-bind--aria-label="state.thisImage.triggerButtonAriaLabel"
			data-wp-init="callbacks.initTriggerButton"
			data-wp-on--click="actions.showLightbox"
			data-wp-style--right="state.thisImage.buttonRight"
			data-wp-style--top="state.thisImage.buttonTop"
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			<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12">
				<path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" />
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<figure data-wp-context="{&quot;imageId&quot;:&quot;6aeb0042b8c7c&quot;}" data-wp-interactive="core/image" data-wp-key="6aeb0042b8c7c" class="wp-block-image size-large wp-lightbox-container"><img loading="lazy" decoding="async" width="1024" height="768" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on--click="actions.showLightbox" data-wp-on--load="callbacks.setButtonStyles" data-wp-on--pointerdown="actions.preloadImage" data-wp-on--pointerenter="actions.preloadImageWithDelay" data-wp-on--pointerleave="actions.cancelPreload" data-wp-on-window--resize="callbacks.setButtonStyles" data-id="244" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney20-1024x768.jpg" alt="" class="wp-image-244" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney20-1024x768.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney20-300x225.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney20-768x576.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney20-1536x1152.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney20-2048x1536.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><button
			class="lightbox-trigger"
			type="button"
			aria-haspopup="dialog"
			data-wp-bind--aria-label="state.thisImage.triggerButtonAriaLabel"
			data-wp-init="callbacks.initTriggerButton"
			data-wp-on--click="actions.showLightbox"
			data-wp-style--right="state.thisImage.buttonRight"
			data-wp-style--top="state.thisImage.buttonTop"
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			<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12">
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<figure data-wp-context="{&quot;imageId&quot;:&quot;6aeb0042b9a96&quot;}" data-wp-interactive="core/image" data-wp-key="6aeb0042b9a96" class="wp-block-image size-large wp-lightbox-container"><img loading="lazy" decoding="async" width="1024" height="768" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on--click="actions.showLightbox" data-wp-on--load="callbacks.setButtonStyles" data-wp-on--pointerdown="actions.preloadImage" data-wp-on--pointerenter="actions.preloadImageWithDelay" data-wp-on--pointerleave="actions.cancelPreload" data-wp-on-window--resize="callbacks.setButtonStyles" data-id="245" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney21-1024x768.jpg" alt="" class="wp-image-245" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney21-1024x768.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney21-300x225.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney21-768x576.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney21-1536x1152.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney21-2048x1536.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><button
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			aria-haspopup="dialog"
			data-wp-bind--aria-label="state.thisImage.triggerButtonAriaLabel"
			data-wp-init="callbacks.initTriggerButton"
			data-wp-on--click="actions.showLightbox"
			data-wp-style--right="state.thisImage.buttonRight"
			data-wp-style--top="state.thisImage.buttonTop"
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			<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12">
				<path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" />
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<figure data-wp-context="{&quot;imageId&quot;:&quot;6aeb0042ba4ac&quot;}" data-wp-interactive="core/image" data-wp-key="6aeb0042ba4ac" class="wp-block-image size-large wp-lightbox-container"><img loading="lazy" decoding="async" width="1024" height="768" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on--click="actions.showLightbox" data-wp-on--load="callbacks.setButtonStyles" data-wp-on--pointerdown="actions.preloadImage" data-wp-on--pointerenter="actions.preloadImageWithDelay" data-wp-on--pointerleave="actions.cancelPreload" data-wp-on-window--resize="callbacks.setButtonStyles" data-id="246" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney22-1024x768.jpg" alt="" class="wp-image-246" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney22-1024x768.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney22-300x225.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney22-768x576.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney22-1536x1152.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney22-2048x1536.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><button
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			type="button"
			aria-haspopup="dialog"
			data-wp-bind--aria-label="state.thisImage.triggerButtonAriaLabel"
			data-wp-init="callbacks.initTriggerButton"
			data-wp-on--click="actions.showLightbox"
			data-wp-style--right="state.thisImage.buttonRight"
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		>
			<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12">
				<path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" />
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<figure data-wp-context="{&quot;imageId&quot;:&quot;6aeb0042bbb06&quot;}" data-wp-interactive="core/image" data-wp-key="6aeb0042bbb06" class="wp-block-image size-large wp-lightbox-container"><img loading="lazy" decoding="async" width="1024" height="768" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on--click="actions.showLightbox" data-wp-on--load="callbacks.setButtonStyles" data-wp-on--pointerdown="actions.preloadImage" data-wp-on--pointerenter="actions.preloadImageWithDelay" data-wp-on--pointerleave="actions.cancelPreload" data-wp-on-window--resize="callbacks.setButtonStyles" data-id="247" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney23-1024x768.jpg" alt="" class="wp-image-247" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney23-1024x768.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney23-300x225.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney23-768x576.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney23-1536x1152.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Silbermoewen_Seestern_Norderney23-2048x1536.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><button
			class="lightbox-trigger"
			type="button"
			aria-haspopup="dialog"
			data-wp-bind--aria-label="state.thisImage.triggerButtonAriaLabel"
			data-wp-init="callbacks.initTriggerButton"
			data-wp-on--click="actions.showLightbox"
			data-wp-style--right="state.thisImage.buttonRight"
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			<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12">
				<path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" />
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<p class="wp-block-paragraph">Junge Silbermöwen sind überwiegend braun gefärbt. Man verwechselt sie daher in der Luft gerne mal mit einem Greifvogel. Die Färbung verschiebt sich dann im Lauf der nächsten Jahre immer weiter zu weißen Tönen. Erst nach 4 Jahren tragen die Großmöwen dann ihr endgültiges Gefieder.</p>
]]></content:encoded>
					
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			</item>
		<item>
		<title>Plankton im Wattenmeer</title>
		<link>https://xn--dnenforschernorderney-8hc.de/uncategorized/plankton-im-wattenmeer/</link>
		
		<dc:creator><![CDATA[Rolf]]></dc:creator>
		<pubDate>Wed, 30 Jul 2025 20:06:10 +0000</pubDate>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[Artenvielfalt]]></category>
		<category><![CDATA[Mikrobiologie]]></category>
		<category><![CDATA[Mikroskop]]></category>
		<category><![CDATA[Plankton]]></category>
		<category><![CDATA[Wattenmeer]]></category>
		<guid isPermaLink="false">https://xn--dnenforschernorderney-8hc.de/?p=181</guid>

					<description><![CDATA[Vor ein paar Tagen hatte ich das Vergnügen, auf dem Traditionssegler &#8222;Friedrich&#8220; aus Leer durch das Wattenmeer zwischen Norderney und dem Festland fahren und segeln zu dürfen. Mit an Bord waren u.a. Mitarbeiter des Besucherzentrums Watt-Welten, die mit einem Planktonnetz bewehrt waren. Unter dem Mikroskop fanden sich dann sehr viele unterschiedliche Kieselalgen, von denen hier [&#8230;]]]></description>
										<content:encoded><![CDATA[
<p class="wp-block-paragraph">Vor ein paar Tagen hatte ich das Vergnügen, auf dem Traditionssegler &#8222;Friedrich&#8220; aus Leer durch das Wattenmeer zwischen Norderney und dem Festland fahren und segeln zu dürfen. Mit an Bord waren u.a. Mitarbeiter des <a href="https://www.nationalpark-wattenmeer.de/besuchen/infozentren/unesco-weltnaturerbe-wattenmeer-besucherzentrum-norderney/" target="_blank" rel="noreferrer noopener nofollow">Besucherzentrums Watt-Welten</a>, die mit einem Planktonnetz bewehrt waren. Unter dem Mikroskop fanden sich dann sehr viele unterschiedliche Kieselalgen, von denen hier einige abgebildet sind. <br>Diese Kieselalgen sorgen dafür, dass das Watt viel CO<sub>2</sub> bindet und Biomasse produziert.<br>Im Gegensatz zu den Kieselalgen auf der Wattoberfläche können diese Vertreter hier nicht (oder nur selten) gleiten. Sie besitzen dagegen Vorrichtungen, um im Wasser schweben zu können. Lange Fortsätze z.B., oder Gasblasen.<br>Das Wasser war etwa 20 Grad warm, mit 3% Salzgehalt nicht ganz so salzig wie das Wasser in der offenen Nordsee, und mit einem pH-Wert von 7,9 auch nicht ganz so alkalisch.<br></p>



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<p class="has-small-font-size wp-block-paragraph" style="border-style:none;border-width:0px;margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-bottom:0"><em>Lithodesmium</em>. Kieselalge, links eine Hellfeldaufnahme, rechts im Phasenkonstrast. Die &#8222;Schlangenlinien&#8220; im Hellfeldbild sind Artefakte, die beim Stacken der Einzelbilder entstanden sind. Da sind kleinere Organismen während der Aufnahmen durch das Bild gewandert.</p>
</div>



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<p class="has-small-font-size wp-block-paragraph"><em>Lithodesmium undulatum</em>. Kieselalge</p>
</div>



<div class="wp-block-group is-style-section-1 is-content-justification-space-between is-nowrap is-layout-flex wp-container-core-group-is-layout-7547c577 wp-block-group-is-layout-flex is-style-section-1--5" style="margin-top:var(--wp--preset--spacing--40);margin-bottom:var(--wp--preset--spacing--40)">
<p class="has-text-align-left has-small-font-size wp-block-paragraph"><em>Pseudo-nitzschia</em>. Kieselalge</p>



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			data-wp-on--click="actions.showLightbox"
			data-wp-style--right="state.thisImage.buttonRight"
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<p class="has-small-font-size wp-block-paragraph" style="border-style:none;border-width:0px;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0"><em>Coscinodiscus granii</em>. Kieselalge</p>
</div>



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			data-wp-init="callbacks.initTriggerButton"
			data-wp-on--click="actions.showLightbox"
			data-wp-style--right="state.thisImage.buttonRight"
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			<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12">
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<p class="is-style-default has-small-font-size wp-block-paragraph"><em>Odontella regia </em>. Kieselalge<br>Die Zellen können kurze Ketten bilden.</p>
</div>



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<figure data-wp-context="{&quot;imageId&quot;:&quot;6aeb0042df316&quot;}" data-wp-interactive="core/image" data-wp-key="6aeb0042df316" class="wp-block-image size-large is-resized wp-lightbox-container"><img loading="lazy" decoding="async" width="1024" height="576" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on--click="actions.showLightbox" data-wp-on--load="callbacks.setButtonStyles" data-wp-on--pointerdown="actions.preloadImage" data-wp-on--pointerenter="actions.preloadImageWithDelay" data-wp-on--pointerleave="actions.cancelPreload" data-wp-on-window--resize="callbacks.setButtonStyles" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/Image-Objektiv-40x_19-27-29-1024x576.jpg" alt="" class="wp-image-197" style="width:394px;height:auto" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/Image-Objektiv-40x_19-27-29-1024x576.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/Image-Objektiv-40x_19-27-29-300x169.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/Image-Objektiv-40x_19-27-29-768x432.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/Image-Objektiv-40x_19-27-29-1536x864.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/Image-Objektiv-40x_19-27-29-2048x1152.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><button
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			data-wp-init="callbacks.initTriggerButton"
			data-wp-on--click="actions.showLightbox"
			data-wp-style--right="state.thisImage.buttonRight"
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			<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12">
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<p class="has-small-font-size wp-block-paragraph"><em>Bacteriastrum hyalinum.</em> Kieselalge.<br>Sie bildet lange Ketten und lange Fortsätze, die die Zellen in der Schwebe halten und wohl auch vor Fressfeinden schützt.</p>
</div>



<div class="wp-block-group is-style-section-1 is-nowrap is-layout-flex wp-container-core-group-is-layout-cb0a7ccb wp-block-group-is-layout-flex is-style-section-1--10">
<figure data-wp-context="{&quot;imageId&quot;:&quot;6aeb0042e08a6&quot;}" data-wp-interactive="core/image" data-wp-key="6aeb0042e08a6" class="wp-block-image size-large is-resized wp-lightbox-container"><img loading="lazy" decoding="async" width="1024" height="798" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on--click="actions.showLightbox" data-wp-on--load="callbacks.setButtonStyles" data-wp-on--pointerdown="actions.preloadImage" data-wp-on--pointerenter="actions.preloadImageWithDelay" data-wp-on--pointerleave="actions.cancelPreload" data-wp-on-window--resize="callbacks.setButtonStyles" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/Image-Objektiv-40x_21-25-00-1024x798.jpg" alt="" class="wp-image-214" style="width:201px;height:auto" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/Image-Objektiv-40x_21-25-00-1024x798.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/Image-Objektiv-40x_21-25-00-300x234.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/Image-Objektiv-40x_21-25-00-768x599.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/Image-Objektiv-40x_21-25-00-1536x1198.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/Image-Objektiv-40x_21-25-00-2048x1597.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><button
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			data-wp-init="callbacks.initTriggerButton"
			data-wp-on--click="actions.showLightbox"
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<figure data-wp-context="{&quot;imageId&quot;:&quot;6aeb0042e10bc&quot;}" data-wp-interactive="core/image" data-wp-key="6aeb0042e10bc" class="wp-block-image size-large is-resized wp-lightbox-container"><img loading="lazy" decoding="async" width="1728" height="1728" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on--click="actions.showLightbox" data-wp-on--load="callbacks.setButtonStyles" data-wp-on--pointerdown="actions.preloadImage" data-wp-on--pointerenter="actions.preloadImageWithDelay" data-wp-on--pointerleave="actions.cancelPreload" data-wp-on-window--resize="callbacks.setButtonStyles" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Image-Objektiv-40x_15-20-25-edited.jpg" alt="" class="wp-image-216" style="width:159px;height:auto" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Image-Objektiv-40x_15-20-25-edited.jpg 1728w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Image-Objektiv-40x_15-20-25-edited-300x300.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Image-Objektiv-40x_15-20-25-edited-1024x1024.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Image-Objektiv-40x_15-20-25-edited-150x150.jpg 150w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Image-Objektiv-40x_15-20-25-edited-768x768.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/08/Image-Objektiv-40x_15-20-25-edited-1536x1536.jpg 1536w" sizes="auto, (max-width: 1728px) 100vw, 1728px" /><button
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			aria-haspopup="dialog"
			data-wp-bind--aria-label="state.thisImage.triggerButtonAriaLabel"
			data-wp-init="callbacks.initTriggerButton"
			data-wp-on--click="actions.showLightbox"
			data-wp-style--right="state.thisImage.buttonRight"
			data-wp-style--top="state.thisImage.buttonTop"
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			<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12">
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<p class="has-small-font-size wp-block-paragraph">Noch einmal <em>Bacteriastrum</em>.</p>
</div>



<div class="wp-block-group is-style-section-1 is-nowrap is-layout-flex wp-container-core-group-is-layout-cb0a7ccb wp-block-group-is-layout-flex is-style-section-1--11">
<p class="has-small-font-size wp-block-paragraph">Eine spiralförmige Kieselalge. <em>Chaetoceros debilis.</em><br>Die Aufnahme ist gestackt.<br></p>



<figure data-wp-context="{&quot;imageId&quot;:&quot;6aeb0042e2dfe&quot;}" data-wp-interactive="core/image" data-wp-key="6aeb0042e2dfe" class="wp-block-image size-large is-resized wp-lightbox-container"><img loading="lazy" decoding="async" width="1024" height="576" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on--click="actions.showLightbox" data-wp-on--load="callbacks.setButtonStyles" data-wp-on--pointerdown="actions.preloadImage" data-wp-on--pointerenter="actions.preloadImageWithDelay" data-wp-on--pointerleave="actions.cancelPreload" data-wp-on-window--resize="callbacks.setButtonStyles" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/pystk1_sup1_Hi28_wav50-1024x576.jpg" alt="" class="wp-image-217" style="width:349px;height:auto" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/pystk1_sup1_Hi28_wav50-1024x576.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/pystk1_sup1_Hi28_wav50-300x169.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/pystk1_sup1_Hi28_wav50-768x432.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/pystk1_sup1_Hi28_wav50-1536x864.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/pystk1_sup1_Hi28_wav50-2048x1152.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><button
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			aria-haspopup="dialog"
			data-wp-bind--aria-label="state.thisImage.triggerButtonAriaLabel"
			data-wp-init="callbacks.initTriggerButton"
			data-wp-on--click="actions.showLightbox"
			data-wp-style--right="state.thisImage.buttonRight"
			data-wp-style--top="state.thisImage.buttonTop"
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			<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12">
				<path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" />
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</div>



<div class="wp-block-group is-style-section-1 is-nowrap is-layout-flex wp-container-core-group-is-layout-d06e9f7e wp-block-group-is-layout-flex is-style-section-1--12" style="padding-top:var(--wp--preset--spacing--40);padding-right:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40);padding-left:var(--wp--preset--spacing--40)">
<p class="has-small-font-size wp-block-paragraph">Eine Foraminifere. <br>Wahrscheinlich ein totes Skelett.</p>



<figure data-wp-context="{&quot;imageId&quot;:&quot;6aeb0042e6590&quot;}" data-wp-interactive="core/image" data-wp-key="6aeb0042e6590" class="wp-block-image size-large is-resized wp-lightbox-container"><img loading="lazy" decoding="async" width="1024" height="576" data-wp-class--hide="state.isContentHidden" data-wp-class--show="state.isContentVisible" data-wp-init="callbacks.setButtonStyles" data-wp-on--click="actions.showLightbox" data-wp-on--load="callbacks.setButtonStyles" data-wp-on--pointerdown="actions.preloadImage" data-wp-on--pointerenter="actions.preloadImageWithDelay" data-wp-on--pointerleave="actions.cancelPreload" data-wp-on-window--resize="callbacks.setButtonStyles" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/pystk4_sup1-1024x576.jpg" alt="Foraminifere" class="wp-image-185" style="width:353px;height:auto" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/pystk4_sup1-1024x576.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/pystk4_sup1-300x169.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/pystk4_sup1-768x432.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/pystk4_sup1-1536x864.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/pystk4_sup1-2048x1152.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><button
			class="lightbox-trigger"
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			aria-haspopup="dialog"
			data-wp-bind--aria-label="state.thisImage.triggerButtonAriaLabel"
			data-wp-init="callbacks.initTriggerButton"
			data-wp-on--click="actions.showLightbox"
			data-wp-style--right="state.thisImage.buttonRight"
			data-wp-style--top="state.thisImage.buttonTop"
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			<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12">
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			</svg>
		</button></figure>
</div>



<div class="wp-block-group is-style-section-1 is-nowrap is-layout-flex wp-container-core-group-is-layout-3480be24 wp-block-group-is-layout-flex is-style-section-1--13" style="margin-top:var(--wp--preset--spacing--40);margin-bottom:var(--wp--preset--spacing--40);padding-top:var(--wp--preset--spacing--40);padding-right:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40);padding-left:var(--wp--preset--spacing--40)">
<figure class="wp-block-image size-large is-resized"><img loading="lazy" decoding="async" width="1024" height="576" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/Video-Objektiv-40x-27-07-25_19-04-51_000051-1024x576.jpg" alt="" class="wp-image-188" style="width:369px;height:auto" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/Video-Objektiv-40x-27-07-25_19-04-51_000051-1024x576.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/Video-Objektiv-40x-27-07-25_19-04-51_000051-300x169.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/Video-Objektiv-40x-27-07-25_19-04-51_000051-768x432.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/Video-Objektiv-40x-27-07-25_19-04-51_000051-1536x864.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/07/Video-Objektiv-40x-27-07-25_19-04-51_000051-2048x1152.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /></figure>



<p class="has-small-font-size wp-block-paragraph">Überraschend: Ein Glockentierchen, das wohl auf einer Kolonie kleiner Algen durch das Wasser treibt.</p>
</div>



<p class="wp-block-paragraph"></p>
]]></content:encoded>
					
		
		
			</item>
		<item>
		<title>Die Kreuzkröten sind aufgewacht!</title>
		<link>https://xn--dnenforschernorderney-8hc.de/uncategorized/die-kreuzkroeten-sind-aufgewacht/</link>
					<comments>https://xn--dnenforschernorderney-8hc.de/uncategorized/die-kreuzkroeten-sind-aufgewacht/#respond</comments>
		
		<dc:creator><![CDATA[Rolf]]></dc:creator>
		<pubDate>Tue, 10 Jun 2025 22:44:31 +0000</pubDate>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[Dynamik]]></category>
		<category><![CDATA[Kreuzkröte]]></category>
		<guid isPermaLink="false">https://xn--dnenforschernorderney-8hc.de/?p=173</guid>

					<description><![CDATA[Sie sind wieder da, die Kreuzkröten! Man kann ihre Rufe nachts wieder über fast die gesamte Insel hören. Und sie huschen nun auch wieder über die Wege, um zu den Laichgewässern zu kommen. Lange hat es gedauert in diesem Jahr. Mitte Juni. Sonst sind sie gerne auch schon Mitte Mai unterwegs. Aber in diesem Jahr [&#8230;]]]></description>
										<content:encoded><![CDATA[
<p class="wp-block-paragraph">Sie sind wieder da, die Kreuzkröten! Man kann ihre Rufe nachts wieder über fast die gesamte Insel hören. Und sie huschen nun auch wieder über die Wege, um zu den Laichgewässern zu kommen.</p>



<p class="wp-block-paragraph">Lange hat es gedauert in diesem Jahr. Mitte Juni. Sonst sind sie gerne auch schon Mitte Mai unterwegs. Aber in diesem Jahr war es bislang einfach noch zu kalt &#8211; und viel zu trocken.</p>



<p class="wp-block-paragraph">Kreuzkröten brauchen etwa 15 Grad, bevor sie aus den Verstecken kommen. Sie laichen dann in flache, vegetationsfreie oder &#8211; arme Pfützen. Die haben sich, auch, und vor allem im Inselosten, erst in den letzten Tagen nach kräftigem Regen gebildet. Entlang des Mittelwegs liegen nun also kleine Gewässer mit Süßwasser neben solchen mit Brackwasser. Die Kröten selbst sind da nicht sehr wählerisch. Ihre Kaulquappen vertragen recht hohe Salzgehalte &#8211; zumindest verglichen mit den anderen Amphibien, die fast ausschließlich im Süßwasser leben. </p>



<p class="wp-block-paragraph">Diese Pfützen sind flach, und erwärmen sich daher schnell. Sie können aber auch schnell wieder austrocknen. Dann haben die Kaulquappen Pech. Der Vorteil solcher Gewässer: darin leben keine Fische, die den Nachwuchs wegfressen können. </p>



<div class="wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-1015f775 wp-block-group-is-layout-flex" style="padding-right:0;padding-left:0">
<p class="wp-block-paragraph" style="border-style:none;border-width:0px">Die Kreuzkröten leben mit dem Risiko, dass die Laichgewässer schnell wieder verschwinden können. Sie haben sich angepasst: Die Weibchen legen meterlange Laichschnüre mit bis zu 2000 Eiern. Und sie tun das immer wieder, bis Anfang August. Die Kaulquappen entwickeln sich rasch: Im besten Fall gehen sie bereits nach rund 6 Wochen an Land. Dann sind sie allerdings noch recht klein, meist unter 1 cm lang.</p>



<figure class="wp-block-image size-large is-resized"><img loading="lazy" decoding="async" width="768" height="1024" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/06/20250609_214454-768x1024.jpg" alt="" class="wp-image-175" style="width:270px;height:auto" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/06/20250609_214454-768x1024.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/06/20250609_214454-225x300.jpg 225w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/06/20250609_214454-1152x1536.jpg 1152w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/06/20250609_214454-1536x2048.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/06/20250609_214454-scaled.jpg 1920w" sizes="auto, (max-width: 768px) 100vw, 768px" /><figcaption class="wp-element-caption">Frische Laichschnüre der Kreuzkröte</figcaption></figure>
</div>



<p class="wp-block-paragraph">Ausgewachsen bringen es die Kröten auf etwa 5 cm Länge. Sie sind recht schnell zu Fuß unterwegs. Dabei kriechen sie nicht über den Boden, wie es andere Kröten tun, sondern sie laufen, weshalb man sie auch aus dem Augenwinkel mit Mäusen verwechsel kann.</p>



<p class="wp-block-paragraph">Kreuzkröten besiedeln frische, neu entstandene kleine Tümpel und Pfützen, ähnlich wie Unken und Wechselkröten. Sie sind darauf angewiesen, dass die Landschaft dynamisch ist und bleibt. Will man diesen Amphibien erhalten, muss man zulassen, dass die Natur immer wieder gestört wird, sei es auf natürliche Weise oder mit Baggern und Lastwagen.</p>
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		<title>Algenblüte</title>
		<link>https://xn--dnenforschernorderney-8hc.de/uncategorized/algenbluete/</link>
		
		<dc:creator><![CDATA[Rolf]]></dc:creator>
		<pubDate>Fri, 23 May 2025 20:54:47 +0000</pubDate>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[Algenblüte]]></category>
		<category><![CDATA[anaerob]]></category>
		<category><![CDATA[Mikroskop]]></category>
		<category><![CDATA[Ökologie]]></category>
		<category><![CDATA[Sulfat]]></category>
		<guid isPermaLink="false">https://xn--dnenforschernorderney-8hc.de/?p=68</guid>

					<description><![CDATA[Derzeit sind einige Tümpel entlang des Mittelswegs überraschend kräftig grün gefärbt. Was ist da los? Einige Zusatzinformationen: Dieser Tümpel liegt etwas östlich der Möwendüne (im Hintergrund).Der Boden ist tief schwarz und matschig. Mit einem pH-Wert von 9,4 ist er ungewöhnlich alkalisch. Der Salzgehalt liegt bei 1,6% (Vergleich: Meerwasser enthält rund 3,5% Salz). Woher kommt die [&#8230;]]]></description>
										<content:encoded><![CDATA[
<p class="wp-block-paragraph"><strong>Derzeit sind einige Tümpel entlang des Mittelswegs überraschend kräftig grün gefärbt. Was ist da los?</strong><br><br>Einige Zusatzinformationen: <br>Dieser Tümpel liegt etwas östlich der Möwendüne (im Hintergrund).<br>Der Boden ist tief schwarz und matschig. Mit einem pH-Wert von 9,4 ist er ungewöhnlich alkalisch. Der Salzgehalt liegt bei 1,6% (Vergleich: Meerwasser enthält rund 3,5% Salz).</p>



<h3 class="wp-block-heading">Woher kommt die grüne Farbe?</h3>



<p class="wp-block-paragraph"><br>Es leben hier also wohl extrem viele sehr kleine kugelförmige grüne Algen. Sie sind nicht beweglich, sinken aber wohl wegen ihrer geringen Größe (~1 µm) und vielleicht auch wegen einer Schleimkapsel nicht ab. Zwischen ihnen hindurch wuseln grüne Dinoflagellaten (15 µm). Sie haben zwei Flagellen, mit denen sie sich fortbewegen. Sie sind fototaktisch: Geraten sie in Dunkelheit, drehen sie wieder um, um im Licht zu bleiben.</p>



<figure class="wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-14 is-layout-flex wp-block-gallery-is-layout-flex">
<figure class="wp-block-image size-large"><img loading="lazy" decoding="async" width="576" height="1024" data-id="142" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/signal-2025-05-23-094639-576x1024.jpeg" alt="" class="wp-image-142" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/signal-2025-05-23-094639-576x1024.jpeg 576w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/signal-2025-05-23-094639-169x300.jpeg 169w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/signal-2025-05-23-094639-768x1365.jpeg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/signal-2025-05-23-094639-864x1536.jpeg 864w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/signal-2025-05-23-094639.jpeg 1152w" sizes="auto, (max-width: 576px) 100vw, 576px" /></figure>



<figure class="wp-block-image size-large"><img loading="lazy" decoding="async" width="1024" height="1002" data-id="145" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv-20x_20-44-22-1024x1002.jpg" alt="" class="wp-image-145" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv-20x_20-44-22-1024x1002.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv-20x_20-44-22-300x293.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv-20x_20-44-22-768x751.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv-20x_20-44-22.jpg 1428w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><figcaption class="wp-element-caption">Kleinste Grünalgen (und einige Dinoflagellaten)</figcaption></figure>



<figure class="wp-block-image size-large"><img loading="lazy" decoding="async" width="1024" height="576" data-id="146" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv-40x_21-07-22-1024x576.jpg" alt="" class="wp-image-146" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv-40x_21-07-22-1024x576.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv-40x_21-07-22-300x169.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv-40x_21-07-22-768x432.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv-40x_21-07-22-1536x864.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv-40x_21-07-22-2048x1152.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><figcaption class="wp-element-caption">Dinoflagellaten</figcaption></figure>
</figure>



<h3 class="wp-block-heading">Ein paar Glockentiere gibt es auch noch</h3>



<p class="wp-block-paragraph">Neben den phototrophen Algen leben hier auch noch ein paar Räuber. Hier ist ein Glockentierchen: Ein Einzeller aus der Gruppe der Wimperntierchen, der einen Kranz aus schnell schlagenden Wimpern besitzt. Mit ihnen strudelt er Wasser und darin befindliche Partikel in seine Mundöffnung. Was schmeckt, leitet er in eine Nahrungsvakuole weiter. Die Zelle ist etwa 50 µm lang. Im Bild c ist der Kanal zu erkennen, über den das Glockentierchen die Nahrung aufnimmt.</p>



<figure class="wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-15 is-layout-flex wp-block-gallery-is-layout-flex">
<figure class="wp-block-image size-large"><img loading="lazy" decoding="async" width="1024" height="576" data-id="148" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv-40x_21-17-59-1024x576.jpg" alt="" class="wp-image-148" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv-40x_21-17-59-1024x576.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv-40x_21-17-59-300x169.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv-40x_21-17-59-768x432.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv-40x_21-17-59-1536x864.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv-40x_21-17-59-2048x1152.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><figcaption class="wp-element-caption">a</figcaption></figure>
</figure>



<figure class="wp-block-image size-large"><img loading="lazy" decoding="async" width="1024" height="576" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv100x_21-31-08-1024x576.jpg" alt="" class="wp-image-149" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv100x_21-31-08-1024x576.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv100x_21-31-08-300x169.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv100x_21-31-08-768x432.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv100x_21-31-08-1536x864.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv100x_21-31-08-2048x1152.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><figcaption class="wp-element-caption">b</figcaption></figure>



<figure class="wp-block-image size-large"><img loading="lazy" decoding="async" width="1024" height="576" src="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv100x_21-31-50-1024x576.jpg" alt="" class="wp-image-147" srcset="https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv100x_21-31-50-1024x576.jpg 1024w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv100x_21-31-50-300x169.jpg 300w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv100x_21-31-50-768x432.jpg 768w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv100x_21-31-50-1536x864.jpg 1536w, https://xn--dnenforschernorderney-8hc.de/wp-content/uploads/2025/05/Image-Objektiv100x_21-31-50-2048x1152.jpg 2048w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /><figcaption class="wp-element-caption">c</figcaption></figure>



<h3 class="wp-block-heading">Was passiert hier?</h3>



<p class="wp-block-paragraph">Bis zum Zeitpunkt der Probennahme hatte es mehrere Monate nicht geregnet. In diesem Tümpel steht normalerweise etwa knapp einen halben Meter mehr Wasser. Das Salzwasser, das den Tümpel bei der letzten Sturmflut gefüllt hatte, ist also noch nicht stark vom Regen verdünnt. Deshalb ist das Wasser jetzt noch brackig. Außerdem scheint der Tümpel wohl recht nährstoffreich zu sein: Der Untergrund und die Ränder sind schwarz und schlickig. Die Schwärze stammt von Eisensulfid. Das entsteht dann, wenn Biomasse ohne Sauerstoff zersetzt wird. Hierbei sind anaerobe, sog. Sulfat-reduzierende Bakterien beteiligt, die die Biomasse nicht, wie wir, mit Sauerstoff, sondern mit Sulfat aus dem Meerwasser umsetzen. Dabei entsteht das Sulfid, das sich mit Eisen aus dem Boden verbindet. </p>



<p class="has-small-font-size wp-block-paragraph">Wie weist man das Sulfid nach? Wenn man dieses schwarze Sediment mit einer Säure versetzt, wird das Sulfid als Schwefelwasserstoff freigesetzt &#8211; die Probe stinkt nach faulen Eiern. Tat sie&#8230;.</p>



<p class="wp-block-paragraph">Diese Sulfat-reduzierenden Bakterien vertragen keinen Sauerstoff. Hier ist aber wohl so viel Biomasse da, dass der Sauerstoff schlicht nicht ausreicht. Daher dürfte der Tümpel gut gedüngt sein.</p>



<figure class="wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio"><div class="wp-block-embed__wrapper">
<iframe loading="lazy" title="Glockentierchen" width="500" height="281" src="https://www.youtube.com/embed/0Fw8F9FyzwQ?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
</div></figure>
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		<title>Erwachen</title>
		<link>https://xn--dnenforschernorderney-8hc.de/uncategorized/hello-world/</link>
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		<dc:creator><![CDATA[Rolf]]></dc:creator>
		<pubDate>Mon, 24 Feb 2025 21:39:44 +0000</pubDate>
				<category><![CDATA[Uncategorized]]></category>
		<guid isPermaLink="false">http://xn--dnenforschernorderney-8hc.de/?p=1</guid>

					<description><![CDATA[Es ist einer der ersten schönen, sonnigen und warmen Tage in diesem Jahr. Die Kaninchen an der Möwendüne wissen das auch zu schätzen.]]></description>
										<content:encoded><![CDATA[
<p class="wp-block-paragraph">Es ist einer der ersten schönen, sonnigen und warmen Tage in diesem Jahr. Die Kaninchen an der Möwendüne wissen das auch zu schätzen.</p>
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