Seasonal shift in the taxonomic diversity of rocky reef fishes in the southwestern Gulf of California

The southwestern Gulf of California has high-value commercial fisheries; however, there are few studies of the taxonomic diversity of fish in this area. Surveys of taxonomic diversity of the fish assemblage at 8 localities near the shore of Bahía de La Paz were undertaken from March 2002 to April 20...

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Autores principales:	Barjau-González,Emelio, Rodríguez-Romero,Jesús, Galván-Magaña,Felipe, Maldonado-García,Minerva
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2016
Materias:	Taxonomic diversity reef fish Gulf of California
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572016000100002
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spelling	oai:scielo:S0718-195720160001000022016-06-24Seasonal shift in the taxonomic diversity of rocky reef fishes in the southwestern Gulf of CaliforniaBarjau-González,EmelioRodríguez-Romero,JesúsGalván-Magaña,FelipeMaldonado-García,Minerva Taxonomic diversity reef fish Gulf of California The southwestern Gulf of California has high-value commercial fisheries; however, there are few studies of the taxonomic diversity of fish in this area. Surveys of taxonomic diversity of the fish assemblage at 8 localities near the shore of Bahía de La Paz were undertaken from March 2002 to April 2003. Seasonal changes in diversity of rocky reef fish were analyzed, including taxonomic distance among fish species, using the alpha, alpha average, beta, and gamma diversity indices, the taxonomic distinctness index (TD Δ*), and the average taxonomic distinctness index (AvTD Δ+). Submarine visual censuses were carried out along 48 transects measuring 100 × 5 m (500 m²) at 5 m average depth from 09:00-16:00 h. Two seasons were studied: winter with an average temperature of 22.57°C, and summer with an average temperature of 27.09°C. 24,633 fishes, belonging to 92 species and 67 genera were recorded. According to the alpha average, beta, and gamma diversity indices, August had the highest diversity (19.5, 40.5, and 60 species, respectively), and December had the lowest diversity (20.6, 27.4, and 48 species, respectively). Spatial analysis of TD and AvTD were not significantly different, and analysis by season of these indices was not significant different. Greater anthropogenic impact would cause differences in TD and AvTD found at El Guano compared with other locations.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.51 n.1 20162016-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572016000100002en10.4067/S0718-19572016000100002
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Taxonomic diversity reef fish Gulf of California
spellingShingle	Taxonomic diversity reef fish Gulf of California Barjau-González,Emelio Rodríguez-Romero,Jesús Galván-Magaña,Felipe Maldonado-García,Minerva Seasonal shift in the taxonomic diversity of rocky reef fishes in the southwestern Gulf of California
description	The southwestern Gulf of California has high-value commercial fisheries; however, there are few studies of the taxonomic diversity of fish in this area. Surveys of taxonomic diversity of the fish assemblage at 8 localities near the shore of Bahía de La Paz were undertaken from March 2002 to April 2003. Seasonal changes in diversity of rocky reef fish were analyzed, including taxonomic distance among fish species, using the alpha, alpha average, beta, and gamma diversity indices, the taxonomic distinctness index (TD Δ*), and the average taxonomic distinctness index (AvTD Δ+). Submarine visual censuses were carried out along 48 transects measuring 100 × 5 m (500 m²) at 5 m average depth from 09:00-16:00 h. Two seasons were studied: winter with an average temperature of 22.57°C, and summer with an average temperature of 27.09°C. 24,633 fishes, belonging to 92 species and 67 genera were recorded. According to the alpha average, beta, and gamma diversity indices, August had the highest diversity (19.5, 40.5, and 60 species, respectively), and December had the lowest diversity (20.6, 27.4, and 48 species, respectively). Spatial analysis of TD and AvTD were not significantly different, and analysis by season of these indices was not significant different. Greater anthropogenic impact would cause differences in TD and AvTD found at El Guano compared with other locations.
author	Barjau-González,Emelio Rodríguez-Romero,Jesús Galván-Magaña,Felipe Maldonado-García,Minerva
author_facet	Barjau-González,Emelio Rodríguez-Romero,Jesús Galván-Magaña,Felipe Maldonado-García,Minerva
author_sort	Barjau-González,Emelio
title	Seasonal shift in the taxonomic diversity of rocky reef fishes in the southwestern Gulf of California
title_short	Seasonal shift in the taxonomic diversity of rocky reef fishes in the southwestern Gulf of California
title_full	Seasonal shift in the taxonomic diversity of rocky reef fishes in the southwestern Gulf of California
title_fullStr	Seasonal shift in the taxonomic diversity of rocky reef fishes in the southwestern Gulf of California
title_full_unstemmed	Seasonal shift in the taxonomic diversity of rocky reef fishes in the southwestern Gulf of California
title_sort	seasonal shift in the taxonomic diversity of rocky reef fishes in the southwestern gulf of california
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572016000100002
work_keys_str_mv	AT barjaugonzalezemelio seasonalshiftinthetaxonomicdiversityofrockyreeffishesinthesouthwesterngulfofcalifornia AT rodriguezromerojesus seasonalshiftinthetaxonomicdiversityofrockyreeffishesinthesouthwesterngulfofcalifornia AT galvanmaganafelipe seasonalshiftinthetaxonomicdiversityofrockyreeffishesinthesouthwesterngulfofcalifornia AT maldonadogarciaminerva seasonalshiftinthetaxonomicdiversityofrockyreeffishesinthesouthwesterngulfofcalifornia
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Seasonal shift in the taxonomic diversity of rocky reef fishes in the southwestern Gulf of California

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