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Water diversion in Brazil threatens biodiversity

by Perbiche-Neves, Gilmar , Ruocco, Ana M. C. , Erickson, José , Padial, André A. , Azevedo-Santos, Valter M. , Paschoal, Lucas R. P. , Oliveira, Igor , Vitule, Jean R. S. , Daga, Vanessa S. , Pelicice, Fernando M. , Fearnside, Philip M. , Cavallari, Daniel C.

in Amphibians / Animals / Aquatic organisms / Atmospheric Sciences / Biodiversity / Bioinvasion / Brazil / Crustacea / Crustaceans / Dams / Earth and Environmental Science / Ecology / Endangered & extinct species / Environment / Environmental Engineering/Biotechnology / Environmental impact / Environmental Management / Environmental risk / Extinction / fish / Fishes / Fresh Water / freshwater / Homogenization / Indigenous species / Insects / Introduced species / Invasive species / mammals / molluscs / Mollusks / PERSPECTIVE / Physical Geography / Reptiles / risk / Risk factors / River basins / Rivers / Shellfish / social impact / species diversity / Species extinction / Threatened species / Water / Water diversion / Water supply / watersheds / Zooplankton

2020

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Water diversion in Brazil threatens biodiversity

2020

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2020

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Journal Article

Water diversion in Brazil threatens biodiversity

Perbiche-Neves, Gilmar,

Ruocco, Ana M. C.,

Erickson, José,

Padial, André A.,

Azevedo-Santos, Valter M.,

Paschoal, Lucas R. P.,

Oliveira, Igor,

Vitule, Jean R. S.,

Daga, Vanessa S.,

Pelicice, Fernando M.,

Fearnside, Philip M.,

Cavallari, Daniel C.

2020

Overview

Construction of water diversions is a common response to the increasing demands for freshwater, often resulting in benefits to communities but with the risk of multiple environmental, economic, and social impacts. Water-diversion projects can favor massive introductions and accelerate biotic homogenization. This study provides empirical evidence on the consequences of a proposed law intended to divert water from two large and historically isolated river basins in Brazil: Tocantins to São Francisco. Compositional similarity (CS) and β-diversity were quantified encompassing aquatic organisms: mollusks, zooplankton, crustaceans, insects, fishes, amphibians, reptiles, mammals, and plants. For CS we (i) considered only native species, and (ii) simulated the introduction of non-natives and assumed the extinction of threatened species due to this water-diversion project. We highlight the environmental risks of such large-scale projects, which are expected to cause impacts on biodiversity linked to bioinvasion and homogenization, and we recommend alternatives in order to solve water-demand conflicts.

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Publisher

Springer Science + Business Media,Springer Netherlands,Springer Nature B.V

Subject

Amphibians

/ Animals

/ Aquatic organisms

/ Atmospheric Sciences

/ Biodiversity

/ Bioinvasion

/ Brazil