Null models for explaining inland water crustacean zooplankton communities in Chile

in Animal Biology
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Abstract

Inland water crustaceans in Chile are characterized by their low species number and marked endemism; this is due to the marked oligotrophy of water bodies and the geographical properties of Chilean territory, which consists of mountains and glaciers. The aim of the present study is to typify the inland water crustaceans in the northern Aysen region (44-46°S), which is branded by the presence of mountains, ice fields and inland seas, with different kinds of water bodies such as large lakes, permanent and ephemeral pools, rivers and streams. The results revealed low species numbers, but the species associations are random, because in many sites the same species frequently reoccur. Nevertheless, there are marked differences in species associations. The present results tend to agree with similar results for the Magallanes region in southern Patagonia and Argentinean Patagonia.

Null models for explaining inland water crustacean zooplankton communities in Chile

in Animal Biology

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References

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Figures

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    Geographical location and classification of sites considered in the present study.

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    Geographical location of the study area and the sampling sites.

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    Presence-absence species matrix reported for water bodies in the northern Aysen region in the present study.

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    Abundances (ind/L) of species reported from water bodies in the northern Aysen region in the present study.

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    Dendrogram plot depicting the result of the UPGMA cluster analysis using the neighbour-joining method for determining potential similarities between sites on the basis of species associations.

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    Resultsof MJCA for species considered in the present study.

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    Ordination of the different sampling sites along the D1 and D2 axes in the Multiple and Joined Correspondence Analysis (MJCA).

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