Rocky reef fish assemblages in San Jose Island, Mexico

We analyzed the composition, diversity, and abundance of marine fish at rocky reefs off San Jose island, Mexico between October 2001 and August 2002. Fish species were recorded using a visual census in five sampling areas of 50 by 5 meters at two depths, shallow (1-3 meters) and intermediate (5-7 me...

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Detalles Bibliográficos
Autores: Villegas-Sanchez, Carmen Amelia, Abitia Cárdenas, Leonardo Andrés, Gutiérrez Sánchez, Francisco Javier, Galván Magaña, Felipe
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2009
País:México
Institución:Instituto Politécnico Nacional
Repositorio:Repositorio Digital del IPN
OAI Identifier:oai:www.repositoriodigital.ipn.mx:123456789/13312
Acceso en línea:http://www.repositoriodigital.ipn.mx/handle/123456789/13312
Access Level:acceso abierto
Palabra clave:Fish diversity
Specialist
rocky reef
La Paz
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spelling Rocky reef fish assemblages in San Jose Island, MexicoVillegas-Sanchez, Carmen AmeliaAbitia Cárdenas, Leonardo AndrésGutiérrez Sánchez, Francisco JavierGalván Magaña, FelipeFish diversitySpecialistrocky reefLa PazWe analyzed the composition, diversity, and abundance of marine fish at rocky reefs off San Jose island, Mexico between October 2001 and August 2002. Fish species were recorded using a visual census in five sampling areas of 50 by 5 meters at two depths, shallow (1-3 meters) and intermediate (5-7 meters). A total of 26,946 organisms were counted, belonging to 84 species. The families Serranidae (9 species), Labridae (8), Pomacentridae (7), and Haemulidae (6) were the most representative. We measured the rugosity of the bottom surface, which showed a positive relationship with abundance, richness, and fish diversity. The ocean bottom off San Jose island is covered with various size rocks that offer more feeding and refuge areas to fish assemblages than other areas. The ecological index increased during the warm season. Diversity and richness showed significant variations (P<0.05) by depth, with the highest values in exposed locations around the island (Conejo, Pardito, and San Francisquito). The biological value index indicated that the most representative fish species were Stegastes rectifraenum, Abudefduf troschelii, Thalassoma lucasanum, Scarus ghobban, and Mulloidichthys dentatus. The depth and wave exposure were the two environmental variables with the most influence on the structure of rocky-reef fish assemblages.Instituto Politécnico Nacional (IPN). Centro Interdisciplinario de Ciencias MarinasCiencias marinasPDFRevista Mexicana de Biodiversidad2013-02-19T18:42:52Z2013-02-19T18:42:52Z2009info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1870-3453http://www.repositoriodigital.ipn.mx/handle/123456789/13312reponame:Repositorio Digital del IPNinstname:Instituto Politécnico Nacionalinstacron:IPNeninfo:eu-repo/semantics/openAccessoai:www.repositoriodigital.ipn.mx:123456789/133122026-02-18T16:42:42Z
dc.title.none.fl_str_mv Rocky reef fish assemblages in San Jose Island, Mexico
title Rocky reef fish assemblages in San Jose Island, Mexico
spellingShingle Rocky reef fish assemblages in San Jose Island, Mexico
Villegas-Sanchez, Carmen Amelia
Fish diversity
Specialist
rocky reef
La Paz
title_short Rocky reef fish assemblages in San Jose Island, Mexico
title_full Rocky reef fish assemblages in San Jose Island, Mexico
title_fullStr Rocky reef fish assemblages in San Jose Island, Mexico
title_full_unstemmed Rocky reef fish assemblages in San Jose Island, Mexico
title_sort Rocky reef fish assemblages in San Jose Island, Mexico
dc.creator.none.fl_str_mv Villegas-Sanchez, Carmen Amelia
Abitia Cárdenas, Leonardo Andrés
Gutiérrez Sánchez, Francisco Javier
Galván Magaña, Felipe
author Villegas-Sanchez, Carmen Amelia
author_facet Villegas-Sanchez, Carmen Amelia
Abitia Cárdenas, Leonardo Andrés
Gutiérrez Sánchez, Francisco Javier
Galván Magaña, Felipe
author_role author
author2 Abitia Cárdenas, Leonardo Andrés
Gutiérrez Sánchez, Francisco Javier
Galván Magaña, Felipe
author2_role author
author
author
dc.subject.none.fl_str_mv Fish diversity
Specialist
rocky reef
La Paz
topic Fish diversity
Specialist
rocky reef
La Paz
description We analyzed the composition, diversity, and abundance of marine fish at rocky reefs off San Jose island, Mexico between October 2001 and August 2002. Fish species were recorded using a visual census in five sampling areas of 50 by 5 meters at two depths, shallow (1-3 meters) and intermediate (5-7 meters). A total of 26,946 organisms were counted, belonging to 84 species. The families Serranidae (9 species), Labridae (8), Pomacentridae (7), and Haemulidae (6) were the most representative. We measured the rugosity of the bottom surface, which showed a positive relationship with abundance, richness, and fish diversity. The ocean bottom off San Jose island is covered with various size rocks that offer more feeding and refuge areas to fish assemblages than other areas. The ecological index increased during the warm season. Diversity and richness showed significant variations (P<0.05) by depth, with the highest values in exposed locations around the island (Conejo, Pardito, and San Francisquito). The biological value index indicated that the most representative fish species were Stegastes rectifraenum, Abudefduf troschelii, Thalassoma lucasanum, Scarus ghobban, and Mulloidichthys dentatus. The depth and wave exposure were the two environmental variables with the most influence on the structure of rocky-reef fish assemblages.
publishDate 2009
dc.date.none.fl_str_mv 2009
2013-02-19T18:42:52Z
2013-02-19T18:42:52Z
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv 1870-3453
http://www.repositoriodigital.ipn.mx/handle/123456789/13312
identifier_str_mv 1870-3453
url http://www.repositoriodigital.ipn.mx/handle/123456789/13312
dc.language.none.fl_str_mv en
language_invalid_str_mv en
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Revista Mexicana de Biodiversidad
publisher.none.fl_str_mv Revista Mexicana de Biodiversidad
dc.source.none.fl_str_mv reponame:Repositorio Digital del IPN
instname:Instituto Politécnico Nacional
instacron:IPN
instname_str Instituto Politécnico Nacional
instacron_str IPN
institution IPN
reponame_str Repositorio Digital del IPN
collection Repositorio Digital del IPN
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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