Cerrar

No. de sistema: 000046664

LDR _ _ 00000nab^^2200000za^4500
008 _ _ 080807m20089999ne^mr^p^^^^^^z0^^^a|eng^d
040 _ _ a| ECO
c| ECO
043 _ _ a| n-mx-tb
044 _ _ a| ne
100 1 _ a| Arriaga Weiss, Stefan Louis
c| Dr.
245 1 0 a| Bird communities in rainforest fragments
b| guild responses to habitat variables in Tabasco, Mexico
520 1 _ a| The effects of habitat loss and fragmentation in tropical forests are difficult to separate, as they usually occur concurrently. In the state park La Sierra, in Tabasco, Mexico, the rainforest is being cleared for pasture, and fragments are being used by local inhabitants. This study examined the response of bird feeding guilds to habitat characteristics, including human disturbance, in five fragments of different sizes (1 - 4,500 ha, 2 - 150 ha, and 2 - 80 ha). Using point count observations, 125 species were recorded and were grouped into 11 feeding guilds. As expected, the largest fragment had higher species richness and abundances than the smaller fragments. However, five habitat features differed significantly among fragment sizes, including tree density, the number of tree stumps and the number of trails. Thus the larger fragment was also less disturbed. Fragment size alone was significant only for scavenger species richness, and for the abundance of bark gleaning insectivores and insectivore/nectarivores. Raptors were more diverse and abundant in the large fragment and less disturbed sites. Arboreal frugivores and bark or foliage gleaning insectivores, depended on higher trees and less disturbed sites. A better understanding of the mechanisms that affect persistence is essential for the planning of conservation actions.
650 _ 4 a| Hábitat (Ecología)
650 _ 4 a| Paisajes fragmentados
650 _ 4 a| Aves
650 _ 4 a| Conservación de la vida silvestre
651 _ 4 a| Parque Estatal de la Sierra (Tabasco, México)
700 1 _ a| Calmé, Sophie
c| Doctora
e| coaut.
700 1 _ a| Kampichler, Christian
c| Dr.
e| coaut.
773 0 _
t| Biodiversity and Conservation
g| Vol. 17, no. 1 (2008), p. 173-190
x| 0960-3115
900 _ _ a| En hemeroteca, SIBE-San Cristóbal
901 _ _ a| Artículo con arbitraje
902 _ _ a| MM/GOG
904 _ _ a| Agosto 2008
905 _ _ a| Artecosur
905 _ _ a| Artfrosur
905 _ _ a| CRIIS
905 _ _ a| Biblioelectrónica
LNG eng
Cerrar
*En hemeroteca, SIBE-San Cristóbal
Bird communities in rainforest fragments: guild responses to habitat variables in Tabasco, Mexico
Arriaga Weiss, Stefan Louis (autor)
Calmé, Sophie (autor)
Kampichler, Christian (autor)
Contenido en: Biodiversity and Conservation. Vol. 17, no. 1 (2008), p. 173-190. ISSN: 0960-3115
Bibliotecas:
San Cristóbal
No. de sistema: 46664
Tipo: - Artículo con arbitraje
  • Consulta (1)




Inglés

"The effects of habitat loss and fragmentation in tropical forests are difficult to separate, as they usually occur concurrently. In the state park La Sierra, in Tabasco, Mexico, the rainforest is being cleared for pasture, and fragments are being used by local inhabitants. This study examined the response of bird feeding guilds to habitat characteristics, including human disturbance, in five fragments of different sizes (1 - 4,500 ha, 2 - 150 ha, and 2 - 80 ha). Using point count observations, 125 species were recorded and were grouped into 11 feeding guilds. As expected, the largest fragment had higher species richness and abundances than the smaller fragments. However, five habitat features differed significantly among fragment sizes, including tree density, the number of tree stumps and the number of trails. Thus the larger fragment was also less disturbed. Fragment size alone was significant only for scavenger species richness, and for the abundance of bark gleaning insectivores and insectivore/nectarivores. Raptors were more diverse and abundant in the large fragment and less disturbed sites. Arboreal frugivores and bark or foliage gleaning insectivores, depended on higher trees and less disturbed sites. A better understanding of the mechanisms that affect persistence is essential for the planning of conservation actions."

SIBE San Cristóbal
Codigo de barra
Estado
Colección
46664-10
(Disponible)
Artículos de investigación ECOSUR