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No. de sistema: 000032296

LDR _ _ 00000nab^^22^^^^zza^4500
008 _ _ 040319m20049999ne^mr^p^r^^^^z0^^^a0eng^d
040 _ _ a| ECO
c| ECO
043 _ _ a| n-mx-cp
044 _ _ a| ne
084 _ _ a| AR/574.5
b| E3
245 0 0 a| Effect of forest fragmentation on the woody flora of the highlands of Chiapas, Mexico
520 1 _ a| This study was conducted in the Chiapas Highlands, a tropical mountain region where traditional agricultural practices have resulted in a mosaic landscape of forest fragments embedded in a matrix of secondary vegetation and crop fields. The question addressed was how may woody species richness be affected by forest fragment attributes derived from traditional land-use patterns. Species inventories of total woody species, canopy and understorey trees, and shrubs were obtained in 22 forest fragments (>5 ha). Multiple regression analyses were applied to examine the effects of size, matrix, isolation and shape of the forest fragments on richness of these species guilds. Fragment size was correlated with shape (r = 0.75) and isolation (r = -0.69), and isolation was correlated with shape (r = -0.75). Total species richness, and number of shrubs and understorey trees in fragments were related to isolation; moreover, additive effects of fragment shape were found for shrubs. The number of canopy species was not related to any fragment variable. Matrix did not help to explain species richness, possibly due to the landscape structure created by the traditional land-use patterns. In addition to size and isolation, we point out the need of considering shape and matrix as additional fragmentation attributes, along with social and economic factors, if we are ever going to be successful in our management and conservation actions.
650 _ 4 a| Ecología del paisaje
650 _ 4 a| Paisajes fragmentados
650 _ 4 a| Uso de la tierra
650 _ 4 a| Deforestación
650 _ 4 a| Plantas
650 _ 4 a| Bosques tropicales
651 _ 4 a| Región Altos (Chiapas, México)
700 1 _ a| Ochoa Gaona, Susana
c| Dra.
700 1 _ a| González Espinosa, Mario
d| 1950-
e| coaut.
700 1 _ a| Meave, Jorge A.
e| coaut.
700 1 _ a| Sorani Dal Bon, Valentino
e| coaut.
773 0 _
t| Biodiversity and Conservation
g| Vol. 13, no. 5 (May 2004), p. 867-884
x| 0960-3115
900 _ _ a| En hemeroteca, SIBE-San Cristóbal
901 _ _ a| Artículo con arbitraje
902 _ _ a| LRS/MM/GOG/DPH
904 _ _ a| Marzo 2004
905 _ _ a| Servibosques
905 _ _ a| Artecosur
905 _ _ a| Artfrosur
905 _ _ a| Desastres
905 _ _ a| CRIIS
905 _ _ a| Biblioelectrónica
LNG eng
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*En hemeroteca, SIBE-San Cristóbal
Effect of forest fragmentation on the woody flora of the highlands of Chiapas, Mexico
Ochoa Gaona, Susana (autor)
González Espinosa, Mario, 1950- (autor)
Meave, Jorge A. (autor)
Sorani Dal Bon, Valentino (autor)
Clasificación: AR/574.5/E3
Contenido en: Biodiversity and Conservation. Vol. 13, no. 5 (May 2004), p. 867-884. ISSN: 0960-3115
Bibliotecas:
Campeche , Chetumal , San Cristóbal , Tapachula , Villahermosa
No. de sistema: 32296
Tipo: - Artículo con arbitraje
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Inglés

"This study was conducted in the Chiapas Highlands, a tropical mountain region where traditional agricultural practices have resulted in a mosaic landscape of forest fragments embedded in a matrix of secondary vegetation and crop fields. The question addressed was how may woody species richness be affected by forest fragment attributes derived from traditional land-use patterns. Species inventories of total woody species, canopy and understorey trees, and shrubs were obtained in 22 forest fragments (>5 ha). Multiple regression analyses were applied to examine the effects of size, matrix, isolation and shape of the forest fragments on richness of these species guilds. Fragment size was correlated with shape (r = 0.75) and isolation (r = -0.69), and isolation was correlated with shape (r = -0.75). Total species richness, and number of shrubs and understorey trees in fragments were related to isolation; moreover, additive effects of fragment shape were found for shrubs. The number of canopy species was not related to any fragment variable. Matrix did not help to explain species richness, possibly due to the landscape structure created by the traditional land-use patterns. In addition to size and isolation, we point out the need of considering shape and matrix as additional fragmentation attributes, along with social and economic factors, if we are ever going to be successful in our management and conservation actions."

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