Crustacean zooplankton communities, mixotrophic cililates, and optical properties in north patagonian lakes, investigated by remote sensing
Date
Authors
DE LOS RIOS ESCALANTE, PATRICIO RENE
De Los Ríos Escalante, Patricio R.
Woelfl, Stefan
Acevedo-Aránguiz, Patricio S.
Castro, Manuel
De Los Ríos Escalante, Patricio R.
Woelfl, Stefan
Acevedo-Aránguiz, Patricio S.
Castro, Manuel
Authors
Date
Datos de publicación:
10.1163/15685403-bja10022
Keywords
Ciliate - Crustacean - Lake Ecosystem - Mesotrophic Environment - Optical Property - Principal Component Analysis - Remote Sensing - Satellite Altimetry - Water Column - Zooplankton - Patagonia - Ciliophora - Crustacea
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Abstract
North Patagonian lakes are characterized by their oligotrophic or oligo-mesotrophic status. These conditions bring with them, respectively, the presence of abundant mixotrophic ciliates and a low species number of crustacean zooplankton under oligotrophic status, and low numbers of mixotrophic ciliates and a high species number of zooplankton under oligo-mesotrophic status. The aims of the present study are, (1) to use remote sensing techniques for determining abundances of mixotrophic ciliates and crustacean zooplankton, and (2) to characterize these mixotrophic and zooplankton communities by using null models. The sensing was accomplished from a satellite, i.e., by measuring the reflectance of the sunlight on a waterbody, which result will vary according to the contents of the water column. The results of Principal Component Analysis (PCA) revealed that sites with low reflectance of all bands have a high abundance of Stentor accompanied by low zooplankton absolute abundance, whereas a markedly opposite situation was observed under high reflectance, where Stentor has low abundance in conjunction with high zooplankton absolute abundances. The null models revealed that the communities in the studied sites do not have structured species associations, and that there is an overlap of niches. These results obtained agree with similar observations for Argentinean Patagonian lakes. © 2020 Elsevier B.V., All rights reserved.
Description
Keywords
Ciliate , Crustacean , Lake Ecosystem , Mesotrophic Environment , Optical Property , Principal Component Analysis , Remote Sensing , Satellite Altimetry , Water Column , Zooplankton , Patagonia , Ciliophora , Crustacea
Citation
10.1163/15685403-bja10022