Response to environmental, spatial, and temporal mechanisms of the phytoplankton metacommunity: comparing ecological approaches in subtropical reservoirs
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2019
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Resumo
Our objective was to evaluate the effect of
environmental, spatial, and temporal predictors on
different ecological approaches in phytoplankton
metacommunity of two subtropical reservoirs. Our
hypothesis was that the morphological structure,
represented by morphological traits, would be related
to both environmental and spatial factors, while the
functional structure, represented by the physiological,
ecological, and morphological traits, would be related
to environmental factors. We also test the temporal
factor for both approaches. Sampling was performed in two Brazilian subtropical reservoirs along six
sampling periods. We applied the morphology-based
functional classification (MBFG) and the classification based on functional group (FG) as surrogates to
phytoplankton metacommunity and performed the
partition variation to investigate the influences of
different predictors. We found spatial and temporal
variability of MBFG and FG, and although the
metacommunity models presented weak relations,
the environmental, spatial, and temporal processes
appear to influence the phytoplankton morpho-functional structure along the longitudinal axis reservoirs.
However, the relative importance of these processes
seems to depend on the type of functional attribute
evaluated since the MBFGs were related to the spatial
and temporal predictor, while the FGs were associated
with environmental, spatial, and temporal predictors.
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Morphological traits, Variation partitioning, Functional traits
Citação
BORTOLINI, Jascieli Carla et al. Response to environmental, spatial, and temporal mechanisms of the phytoplankton metacommunity: comparing ecological approaches in subtropical reservoirs. Hydrobiologia, Berlim, v. 830, p. 45-61, 2019. DOI: 10.1007/s10750-018-3849-8. Disponível em: https://link.springer.com/article/10.1007/s10750-018-3849-8. Acesso em: 12 jun. 2023.