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    Extrinsic and intrinsic controls of zooplankton diversity in lakes

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    SmithVal_Ecology_87(2)433.pdf (262.1Kb)
    Issue Date
    2006-02-01
    Author
    Hessen, Dag O.
    Faafeng, Bjørn A.
    Smith, Val H.
    Bakkestuen, Vegar
    Walseng, Bjørn
    Publisher
    Ecological Society of America
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Rights
    Copyright by the Ecological Society of America
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    Abstract
    Pelagic crustacean zooplankton were collected from 336 Norwegian lakes covering a wide range of latitude, altitude, lake area, mean depth, production (as chlorophyll a), and fish community structure. Mean zooplankton species richness during the ice-free season was generally low at high latitudes and altitudes. Further, lower species richness was recorded in western lakes, possibly reflecting constraints on migration and dispersal. However, despite obvious spatial limitations, geographic boundaries were only weak predictors of mean zooplankton richness. Similarly, lake surface area did not contribute positively to mean richness such as seen in other ecosystem surveys. Rather, intrinsic factors such as primary production and fish community (planktivore) structure were identified by regression analysis as the major predictors of zooplankton diversity, while a positive correlation was observed between species richness and total zooplankton biomass. However, in spite of a large number of variables included in this study, the predictive power of multiple regression models was modest (<50% variance explained), pointing to a major role for within-lake properties, as yet unidentified intrinsic forces, stochasticity, or dispersal as constraints on zooplankton diversity in these lakes.
    URI
    http://hdl.handle.net/1808/16744
    DOI
    https://doi.org/10.1890/05-0352
    ISSN
    0012-9658
    Collections
    • Ecology & Evolutionary Biology Scholarly Works [1516]
    Citation
    Dag O. Hessen, Bjørn A. Faafeng, Val H. Smith, Vegar Bakkestuen, and Bjørn Walseng 2006. EXTRINSIC AND INTRINSIC CONTROLS OF ZOOPLANKTON DIVERSITY IN LAKES. Ecology 87:433–443. http://dx.doi.org/10.1890/05-0352

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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