Qualitative aspects of the water from Poty River at Teresina, Piaui State,
            Brazil

Damasceno, Lisânea Mycheline Oliveira; Andrade, A. S. de; Dias, Nildo da Silva; Franco, José Luis Duarte; Silva, Ênio Farias de França e

doi:10.5935/1806-6690.20100019

Cited by 1 publication

(1 citation statement)

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“…It is 1432 km in length, has a drainage area of 344,112 km 2 , and is divided into three portions throughout its course: upper, middle, and lower Parnaíba (Lucena et al, 2015). One of the main tributaries of the Parnaíba is the Poti River, with an extension of 538 km and a basin area of about 52,370 km 2 (Damasceno et al, 2010). The region is an area of transition between the Amazon region and the backlands of the Northeast.…”

Section: Methodsmentioning

confidence: 99%

Beta diversity patterns in zooplankton assemblages from a semiarid river ecosystem

Silva

Lansac‐Tôha

Sales

et al. 2020

Internat Rev Hydrobiol

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The study of beta diversity patterns, as well as their underlying mechanisms, is fundamental for the understanding of community structure in aquatic ecosystems. Here, we aimed to investigate patterns of beta diversity in cladoceran, copepod, and rotifer assemblages in the Parnaíba and Poti rivers, along the urban perimeter of the city of Teresina (Piaui, Brazil) and to evaluate the effect of environmental, spatial, and temporal factors on beta diversity in the zooplankton assemblages. We used the Simplex analysis to represent the relative importance of replacement and abundance difference to beta diversity. The decomposition of beta diversity into its components was performed using the Ruzicka dissimilarity index, for abundance data. Distance‐based Redundancy Analyses and variation partitioning were used to explore the relations between explanatory variables and beta diversity and its components. We found that beta diversity was high both spatially and temporally, and the abundance difference component showed greater relative importance than the replacement component. Environmental factors showed a greater contribution to the total explained variability in beta diversity and abundance difference, while replacement received most importance of temporal and spatial variables. Our study provides new insights on how environmental, spatial, and temporal factors shape beta diversity patterns in zooplankton assemblages in impacted aquatic ecosystems.

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Section: Methodsmentioning

confidence: 99%