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

• DOI: 10.15517/rbt.v62i4.12994
• Publication Date: 2015-02-27T11:20:04Z
• Authors: Tamara Rioja-Para...; Arturo Carrillo-R...; Eduardo Espinoza-...
• Keywords: 0106 biological sciences; Important Conservation Bird Area; efecto estacional; QH301-705.5; Population Dynamics; cuerpos de agua; 01 natural sciences; diversidad de aves; Birds; Animals; important Conservation Bird Area; bird diversity; water bodies; Biology (General); aves acuáticas; Mexico; AiCA; Population Density; de importancia para la conservación de las aves; waterbirds; Biodiversity; 15. Life on land; Lakes; season effect; 13. Climate action; Oaxaca; Seasons; AICA

Oaxaca hosts one of the greatest biodiversity in México, occupying first place avian diversity compared to other regions country. However, area is undergoing serious problems such as high defor- estation rates, soil erosion and over exploitation extinction species. These factors have all contributed current loss biodiversity. Also, biological inventories are still incomplete. One least explored sites semiarid zone Tehuantepec isthmus, around locality Santa Maria del Mar, Oaxaca, México. The includes floodable grasslands, mangrove areas dry forest, providing a range potential habitats for different Our objective was evaluate effect temporal lakes on spatial composition avifauna order generate information regarding this group within region state, understand importance flood resident transitory birds. We conducted 12 surveys between July 2006 June 2008, established two transects 2km length each four habitat types (beach, grassland, mangrove). found total 75 species, corresponding 16 orders 30 families. Within an 26 km2, we significantly 10.1% number bird species recorded entire 6.6% reported Mexico. families most repre- sented were: Ardeidae, Laridae Scolopacidae. Over study period, forest diverse habitat; followed by mangrove, grassland beach. Of recorded, 38.6% were at edge or lakes. significant difference seasons but no habitats. results showed temporary during wet season; it also demonstrated conservation given its relevance presence waterbirds. suggested continued more intense monitoring; proposed designation Important Conservation Bird Area (AICA).