Changes in fish assemblages caused by different Neotropical biomes

ABSTRACT We studied the leading causes of the spatial distribution pattern of fish species assemblage in the transition region between Cerrado-Caatinga biomes, in the São Francisco River (Brazil). Biotic and abiotic variables were collected at 17 sampling sites located in three sub-basins, in two pe...

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Autores principales:	Rodrigues,Leydiane, Carmassi,Alberto, Perbiche-Neves,Gilmar, Sarmento-Soares,Luisa María
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2018
Materias:	ichthyofauna spatial pattern variation partition São Francisco River Brazil
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000400660
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spelling	oai:scielo:S0718-560X20180004006602018-11-06Changes in fish assemblages caused by different Neotropical biomesRodrigues,LeydianeCarmassi,AlbertoPerbiche-Neves,GilmarSarmento-Soares,Luisa María ichthyofauna spatial pattern variation partition São Francisco River Brazil ABSTRACT We studied the leading causes of the spatial distribution pattern of fish species assemblage in the transition region between Cerrado-Caatinga biomes, in the São Francisco River (Brazil). Biotic and abiotic variables were collected at 17 sampling sites located in three sub-basins, in two periods during 2015. Some 1689 individual fish were sampled, distributed in 69 species, 51 genera, 22 families and seven orders. There was a low overlap of species, with only seven species in common among the three sub-basins. The most substantial degree of sharing occurred between sub-basins from the Cerrado biome, with 22 restricted species. Crenicichla lepidota, Psellogrammus kennedyi, and Hoplosternum littorale were associated with the sub-basin from Caatinga, and Astyanax aff. eigenmanniorum and Bryconops aff. affinis with Cerrado sub-basins. The fish assemblage showed significant spatial variation between biomes, and the distribution was determined by an interaction of regional altitude variable with local variables such as river width, substrate and water velocity (environmental factors), but geographical factors were also important. Fish assemblage difference along a large river course has significant implications for conservation strategies, management or evaluation of biodiversity, needing several strategies for their preservation considering small geographic areas.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.46 n.4 20182018-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000400660en10.3856/vol46-issue4-fulltext-3
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	ichthyofauna spatial pattern variation partition São Francisco River Brazil
spellingShingle	ichthyofauna spatial pattern variation partition São Francisco River Brazil Rodrigues,Leydiane Carmassi,Alberto Perbiche-Neves,Gilmar Sarmento-Soares,Luisa María Changes in fish assemblages caused by different Neotropical biomes
description	ABSTRACT We studied the leading causes of the spatial distribution pattern of fish species assemblage in the transition region between Cerrado-Caatinga biomes, in the São Francisco River (Brazil). Biotic and abiotic variables were collected at 17 sampling sites located in three sub-basins, in two periods during 2015. Some 1689 individual fish were sampled, distributed in 69 species, 51 genera, 22 families and seven orders. There was a low overlap of species, with only seven species in common among the three sub-basins. The most substantial degree of sharing occurred between sub-basins from the Cerrado biome, with 22 restricted species. Crenicichla lepidota, Psellogrammus kennedyi, and Hoplosternum littorale were associated with the sub-basin from Caatinga, and Astyanax aff. eigenmanniorum and Bryconops aff. affinis with Cerrado sub-basins. The fish assemblage showed significant spatial variation between biomes, and the distribution was determined by an interaction of regional altitude variable with local variables such as river width, substrate and water velocity (environmental factors), but geographical factors were also important. Fish assemblage difference along a large river course has significant implications for conservation strategies, management or evaluation of biodiversity, needing several strategies for their preservation considering small geographic areas.
author	Rodrigues,Leydiane Carmassi,Alberto Perbiche-Neves,Gilmar Sarmento-Soares,Luisa María
author_facet	Rodrigues,Leydiane Carmassi,Alberto Perbiche-Neves,Gilmar Sarmento-Soares,Luisa María
author_sort	Rodrigues,Leydiane
title	Changes in fish assemblages caused by different Neotropical biomes
title_short	Changes in fish assemblages caused by different Neotropical biomes
title_full	Changes in fish assemblages caused by different Neotropical biomes
title_fullStr	Changes in fish assemblages caused by different Neotropical biomes
title_full_unstemmed	Changes in fish assemblages caused by different Neotropical biomes
title_sort	changes in fish assemblages caused by different neotropical biomes
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000400660
work_keys_str_mv	AT rodriguesleydiane changesinfishassemblagescausedbydifferentneotropicalbiomes AT carmassialberto changesinfishassemblagescausedbydifferentneotropicalbiomes AT perbichenevesgilmar changesinfishassemblagescausedbydifferentneotropicalbiomes AT sarmentosoaresluisamaria changesinfishassemblagescausedbydifferentneotropicalbiomes
_version_	1714205204891566080

Changes in fish assemblages caused by different Neotropical biomes

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