NDLI: Ecological status assessment of tropical reservoirs through the assemblage index of phytoplankton functional groups

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Brazilian Journal of Botany : Volume 40, Issue 2, June 2017

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Ecological status assessment of tropical reservoirs through the assemblage index of phytoplankton functional groups

Content Provider	Springer Nature Link
Author	Crossetti, Luciane Oliveira Ferragut, Carla Santana, Lucineide Maria
Copyright Year	2017
Abstract	The study assessed the ecological status of water supply reservoirs with different trophic states through the phytoplankton assemblage index (Q index). Integrated water and phytoplankton sampling were collected in euphotic zone of five tropical reservoirs (Upper Tietê river basin, São Paulo, Brazil) in the summer and winter (2010). Biovolume of functional groups was determined, and the Q index was applied at each site of the reservoirs. The composition of functional groups and biomass changed between the reservoirs and between the climatic periods. From upstream to downstream of the basin, the reservoirs showed the following qualification: Ribeirão do Campo (ultra-oligotrophic—excellent to good), Ponte Nova (oligotrophic—good), Paraitinga (mesotrophic—medium), Jundiaí (meso-eutrophic—medium to tolerable), Taiaçupeba (mesotrophic—tolerable to bad). Q index was significantly correlated with trophic state index (r = −0.81). Linear regression showed that Q index tended to decrease with the increasing in TP concentration. We conclude that the phytoplankton assemblage index showed consistently the spatial and temporal variation of the ecological status of different reservoirs in the study period. Our results evidenced that this biotic index can be a useful tool for monitoring and assessment of the ecological conditions of tropical reservoirs.
Starting Page	695
Ending Page	704
Page Count	10
File Format	PDF
ISSN	01008404
Journal	Brazilian Journal of Botany
Volume Number	40
Issue Number	3
e-ISSN	18069959
Language	English
Publisher	Springer International Publishing
Publisher Date	2017-02-25
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Plant Systematics/Taxonomy/Biogeography Biotic index Seasonality Trophic state Water supply reservoir
Content Type	Text
Resource Type	Article
Subject	Plant Science

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