Predicting temporal variation in zooplankton beta diversity is challenging
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2017-11
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Beta diversity, the spatial variation in species composition, has been related to different
explanatory variables, including environmental heterogeneity, productivity and connectivity.
Using a long-term time series of zooplankton data collected over 62 months in a tropical reservoir
(Ribeirão das Lajes Reservoir, Rio de Janeiro State, Brazil), we tested whether beta
diversity (as measured across six sites distributed along the main axis of the reservoir) was
correlated with environmental heterogeneity (spatial environmental variation in a given
month), chlorophyll-a concentration (a surrogate for productivity) and water level. We did
not found evidence for the role of these predictors, suggesting the need to reevaluate predictions
or at least to search for better surrogates of the processes that hypothetically control
beta diversity variation. However, beta diversity declined over time, which is consistent with
the process of biotic homogenization, a worldwide cause of concern.
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LOPES, Vanessa Guimarães et al. Predicting temporal variation in zooplankton beta diversity is challenging. PLoS One, San Francisco, v. 12, e0187499, 2017. DOI: https://doi.org/10.1371/journal.pone.0187499. Disponível em: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0187499. Acesso em: 10 jan. 2023.