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  • Seller: ConchBooks, Harxheim, GermanyConchBooks

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    18 pp., 21 figs, broch. gr. 8.

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    Seller: ConchBooks, Harxheim, GermanyConchBooks

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    Das Nordseewatt ist nicht nur ein Erholungsgebiet mit steigenden Besucherzahlen, sondern auch ein ?kologisch ausgesprochen sensibler und spannender Lebensraum, der in seiner Dynamik von Ebbe und Flut gekennzeichnet ist. Dort herrschen extreme Bedingungen wie Temperatur- und Salzgehaltsschwankungen, Trockenfall und ?berflutung. Alle Arten von Lebewesen im Einflussbereich der Gezeiten sind hieran in besonderer Weise angepasst. Dieses didaktisch ausgerichtete Lehrbuch schlie?t eine L?cke, indem es biologische Systeme auf anschauliche Weise erkl?rt und daher auch die Zielgruppe der interessierten Besucher anspricht. Ausgehend von einer Einf?hrung in den geografischen Raum mit seiner Entstehungsgeschichte werden die wichtigsten Tier- und Pflanzenarten systematisch erl?utert. Einfache Versuche mit oft verbl?ffenden Ergebnissen helfen, ihre Einzigartigkeit besser zu verstehen. Die Autoren stellen die Nahrungsketten und ?kologischen Vernetzungen dar und geben Anregungen zur Durchf?hrung von Exkursionen und f?r Aktivit?ten in au?erschulischen Lernorten. Magdeburg. VerlagsKG Wolf. 216 pp., 63 color photos, 22 b/w figs, br. gr. 8 [14.3 x 20.5 cm]. …

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    64 pp., 38 figs, broch. 8.

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    Seller: ConchBooks, Harxheim, GermanyConchBooks

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    Unionoida (naiads) are characterized by larvae which have to pass through a parasitic stage on a host fish. Some of these host-parasite systems are unique, since the generation time of the parasite exceeds that of its host by a factor of ten. There is tremendous life history variation. With a life span of more than 200 years, some naiad species belong to the longest-lived invertebrates, some are highly host-specific, some are extremely fertile, some produce very peculiar larvae, and some occur at very high population densities. This volume describes and explains the characteristics and life histories of the naiads, the interactions with their hosts, and their evolution. It elucidates the manifold implications of their presence or absence in a lake or stream. Further, aspects of nature conservation are covered, as many naiad species are seriously threatened. Some have been used successfully as sensitive pollutant indicators in habitat monitoring and as archives for environmental changes. 400 pp., 147 figs, 38 tabs, hc gr. 8.…

  • Language: English

    Published by Springer, 2000

    3540672680 / 9783540672685

    Series: Book 44 of 91 - Ecological Studies

    • Hardcover
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    Seller: Biblios, frankfurt am main, HESSE, GermanyBiblios

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    Condition: New. PRINT ON DEMAND pp. 424.

  • Language: English

    Published by Springer, 2012

    3642631401 / 9783642631405

    Series: Book 44 of 91 - Ecological Studies

    • Softcover
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    Seller: Biblios, frankfurt am main, HESSE, GermanyBiblios

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    Condition: New. PRINT ON DEMAND pp. 424.