Effect of temporal lakes on avifaunal composition at the Southeast of Isthmus of Tehuantepec, Oaxaca, Mexico

Oaxaca hosts one of the greatest biodiversity in México, occupying first place in avian diversity compared to other regions of the country. However, the area is undergoing serious problems such as high deforestation rates, soil erosion and over exploitation and extinction of species. These factors h...

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Main Authors:	Rioja-Paradela, Tamara, Carrillo-Reyes, Arturo, Espinoza-Medinilla, Eduardo
Format:	Online
Language:	eng
Published:	Universidad de Costa Rica 2014
Online Access:	https://revistas.ucr.ac.cr/index.php/rbt/article/view/12994

id	RBT12994
record_format	ojs
spelling	RBT129942022-06-09T17:30:45Z Effect of temporal lakes on avifaunal composition at the Southeast of Isthmus of Tehuantepec, Oaxaca, Mexico Rioja-Paradela, Tamara Carrillo-Reyes, Arturo Espinoza-Medinilla, Eduardo bird diversity Important Conservation Bird Area AICA season effect waterbirds water bodies Oaxaca hosts one of the greatest biodiversity in México, occupying first place in avian diversity compared to other regions of the country. However, the area is undergoing serious problems such as high deforestation rates, soil erosion and over exploitation and extinction of species. These factors have all contributed to the current loss of biodiversity. Also, biological inventories are still incomplete. One of the least explored sites is the semiarid zone of Tehuantepec isthmus, around the locality of Santa Maria del Mar, Oaxaca, México. The area includes floodable grasslands, mangrove areas and dry forest, providing a range of potential habitats for different species. Our objective was to evaluate the effect of temporal lakes on spatial and temporal composition of the avifauna in Santa Maria del Mar, in order to generate information regarding this group within the region and the state, and to understand the importance of flood areas for resident and transitory birds. We conducted 12 avifauna surveys between July 2006 and June 2008, and established two transects of 2km length in each of four habitat types (beach, grassland, dry forest, and mangrove). We found a total of 75 species, corresponding to 16 orders and 30 families. Within an area of 26km2, we significantly found 10.1% of the total number of bird species recorded for the entire state, and 6.6% of the total reported in Mexico. The families most represented were: Ardeidae, Laridae and Scolopacidae. Over the entire study period, dry forest was the most diverse habitat; followed by mangrove, grassland and the beach. Of all the species recorded, 38.6% were found at the edge or in the temporal lakes. We found a significant difference in species composition between seasons in the grassland, but no difference in the other habitats. Our results showed a significant effect of temporary lakes on avian diversity during the wet season; it also demonstrated the importance of grassland conservation given its relevance for presence of waterbirds. We suggested a continued and more intense monitoring; and proposed the designation of the area as an Important Conservation Bird Area (AICA). Tamara Rioja-Paradela1,2, Arturo Carrillo-Reyes1,2 & Eduardo Espinoza-Medinilla1 1Sustentabilidad y Ecología Aplicada, Universidad de Ciencias y Artes de Chiapas. Libramiento Nte. Pte. 1150, Col. Lajas Maciel, Tuxtla Gutiérrez, Chiapas, México; tamararioja@gmail.com, arturocarrilloreyes@gmail.com, eduardo.espinoza@unicach.mx2Oikos: Conservación y Desarrollo Sustentable, A.C., Bugambilias 5, Col. Bismark, San Cristóbal de las Casas, Chiapas, México Universidad de Costa Rica 2014-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://revistas.ucr.ac.cr/index.php/rbt/article/view/12994 10.15517/rbt.v62i4.12994 Revista de Biología Tropical; Vol. 62 No. 4 (2014): Volume 62 – Regular number 4 – December 2014; 1523–1533 Revista de Biología Tropical; Vol. 62 Núm. 4 (2014): Volumen 62 – Número regular 4 – Diciembre 2014; 1523–1533 Revista Biología Tropical; Vol. 62 N.º 4 (2014): Volume 62 – Regular number 4 – December 2014; 1523–1533 2215-2075 0034-7744 10.15517/rbt.v62i4 eng https://revistas.ucr.ac.cr/index.php/rbt/article/view/12994/15505 https://revistas.ucr.ac.cr/index.php/rbt/article/view/12994/15506 Copyright (c) 2014 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0
institution	Universidad de Costa Rica
collection	Revista de Biología Tropical
language	eng
format	Online
author	Rioja-Paradela, Tamara Carrillo-Reyes, Arturo Espinoza-Medinilla, Eduardo
spellingShingle	Rioja-Paradela, Tamara Carrillo-Reyes, Arturo Espinoza-Medinilla, Eduardo Effect of temporal lakes on avifaunal composition at the Southeast of Isthmus of Tehuantepec, Oaxaca, Mexico
author_facet	Rioja-Paradela, Tamara Carrillo-Reyes, Arturo Espinoza-Medinilla, Eduardo
author_sort	Rioja-Paradela, Tamara
description	Oaxaca hosts one of the greatest biodiversity in México, occupying first place in avian diversity compared to other regions of the country. However, the area is undergoing serious problems such as high deforestation rates, soil erosion and over exploitation and extinction of species. These factors have all contributed to the current loss of biodiversity. Also, biological inventories are still incomplete. One of the least explored sites is the semiarid zone of Tehuantepec isthmus, around the locality of Santa Maria del Mar, Oaxaca, México. The area includes floodable grasslands, mangrove areas and dry forest, providing a range of potential habitats for different species. Our objective was to evaluate the effect of temporal lakes on spatial and temporal composition of the avifauna in Santa Maria del Mar, in order to generate information regarding this group within the region and the state, and to understand the importance of flood areas for resident and transitory birds. We conducted 12 avifauna surveys between July 2006 and June 2008, and established two transects of 2km length in each of four habitat types (beach, grassland, dry forest, and mangrove). We found a total of 75 species, corresponding to 16 orders and 30 families. Within an area of 26km2, we significantly found 10.1% of the total number of bird species recorded for the entire state, and 6.6% of the total reported in Mexico. The families most represented were: Ardeidae, Laridae and Scolopacidae. Over the entire study period, dry forest was the most diverse habitat; followed by mangrove, grassland and the beach. Of all the species recorded, 38.6% were found at the edge or in the temporal lakes. We found a significant difference in species composition between seasons in the grassland, but no difference in the other habitats. Our results showed a significant effect of temporary lakes on avian diversity during the wet season; it also demonstrated the importance of grassland conservation given its relevance for presence of waterbirds. We suggested a continued and more intense monitoring; and proposed the designation of the area as an Important Conservation Bird Area (AICA). Tamara Rioja-Paradela1,2, Arturo Carrillo-Reyes1,2 & Eduardo Espinoza-Medinilla1 1Sustentabilidad y Ecología Aplicada, Universidad de Ciencias y Artes de Chiapas. Libramiento Nte. Pte. 1150, Col. Lajas Maciel, Tuxtla Gutiérrez, Chiapas, México; tamararioja@gmail.com, arturocarrilloreyes@gmail.com, eduardo.espinoza@unicach.mx2Oikos: Conservación y Desarrollo Sustentable, A.C., Bugambilias 5, Col. Bismark, San Cristóbal de las Casas, Chiapas, México
title	Effect of temporal lakes on avifaunal composition at the Southeast of Isthmus of Tehuantepec, Oaxaca, Mexico
title_short	Effect of temporal lakes on avifaunal composition at the Southeast of Isthmus of Tehuantepec, Oaxaca, Mexico
title_full	Effect of temporal lakes on avifaunal composition at the Southeast of Isthmus of Tehuantepec, Oaxaca, Mexico
title_fullStr	Effect of temporal lakes on avifaunal composition at the Southeast of Isthmus of Tehuantepec, Oaxaca, Mexico
title_full_unstemmed	Effect of temporal lakes on avifaunal composition at the Southeast of Isthmus of Tehuantepec, Oaxaca, Mexico
title_sort	effect of temporal lakes on avifaunal composition at the southeast of isthmus of tehuantepec, oaxaca, mexico
publisher	Universidad de Costa Rica
publishDate	2014
url	https://revistas.ucr.ac.cr/index.php/rbt/article/view/12994
work_keys_str_mv	AT riojaparadelatamara effectoftemporallakesonavifaunalcompositionatthesoutheastofisthmusoftehuantepecoaxacamexico AT carrilloreyesarturo effectoftemporallakesonavifaunalcompositionatthesoutheastofisthmusoftehuantepecoaxacamexico AT espinozamedinillaeduardo effectoftemporallakesonavifaunalcompositionatthesoutheastofisthmusoftehuantepecoaxacamexico
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Effect of temporal lakes on avifaunal composition at the Southeast of Isthmus of Tehuantepec, Oaxaca, Mexico

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