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No. de sistema: 000049286

LDR _ _ 00000nab^^22^^^^zza^4500
008 _ _ 100804m20109999maubr^p^^^^^^z0^^^a0eng^d
040 _ _ a| ECO
c| ECO
043 _ _ a| n-mx-yu
044 _ _ a| mau
245 0 0 a| Forest fragmentation reduces recruitment of large-seeded tree species in a semi-deciduous tropical forest of southern Mexico
520 1 _ a| This study tested whether the reduction in the number of large-bodied seed dispersers is correlated with shifts in the taxonomic and functional (e.g. dispersal mode and seed size) traits of the seeding communities within small fragments of semi-deciduous forest, southern Mexico. In five fragments (2.3–640 ha) and one continuous forest site we sampled tree and seedling species in 40 (20 × 20 m) and 120 (3 × 3 m) plots respectively, and recorded the incidence (presence/absence) of the disperser fauna (three common large-birds and >500-g mammals). Tree and seedling species were categorized according to dispersal mode, seed size and whether they originated from local (i.e. from dropped) or immigrant (i.e. from actively dispersed) seeds. Fragment size negatively correlated with number of species of medium to large vertebrate seed-dispersers and number of seedlings of large-seeded species, but had no influence on functional traits of the adult-tree community. Between 41% and 61% of all seedlings were considered as immigrants and the proportion of immigrant seedlings of large-seeded tree species was negatively correlated with forest size. The results suggest that biased defaunation in small forest fragments may seriously reduce recruitment of large-seeded tree species (>1.4 cm length) dispersed by vertebrates, negatively affecting successional trajectories of small forest fragments.
650 _ 4 a| Bosques tropicales
650 _ 4 a| Dispersión de semillas
650 _ 4 a| Taxonomía vegetal
650 _ 4 a| Fitogeografía
650 _ 4 a| Migración de plantas
650 _ 4 a| Paisajes fragmentados
651 _ 4 a| El Palmar (Yucatán, México)
700 1 _ a| Melo, Felipe P. L.
700 1 _ a| Martínez Salas, Esteban
e| coaut.
700 1 _ a| Benítez Malvido, Julieta
e| coaut.
700 1 _ a| Ceballos, Gerardo
e| coaut.
773 0 _
t| Journal of Tropical Ecology
g| Vol. 26, part 1 (January 2010), p. 35-43
x| 0266-4674
900 _ _ a| En hemeroteca, SIBE-San Cristóbal
902 _ _ a| Gaby/Brenda
904 _ _ a| Julio 2010
905 _ _ a| Artfrosur
LNG eng
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*En hemeroteca, SIBE-San Cristóbal
Forest fragmentation reduces recruitment of large-seeded tree species in a semi-deciduous tropical forest of southern Mexico
Melo, Felipe P. L. (autor)
Martínez Salas, Esteban (autor)
Benítez Malvido, Julieta (autor)
Ceballos, Gerardo (autor)
Contenido en: Journal of Tropical Ecology. Vol. 26, part 1 (January 2010), p. 35-43. ISSN: 0266-4674
Bibliotecas:
San Cristóbal
No. de sistema: 49286
Tipo: Artículo


Inglés

"This study tested whether the reduction in the number of large-bodied seed dispersers is correlated with shifts in the taxonomic and functional (e.g. dispersal mode and seed size) traits of the seeding communities within small fragments of semi-deciduous forest, southern Mexico. In five fragments (2.3–640 ha) and one continuous forest site we sampled tree and seedling species in 40 (20 × 20 m) and 120 (3 × 3 m) plots respectively, and recorded the incidence (presence/absence) of the disperser fauna (three common large-birds and >500-g mammals). Tree and seedling species were categorized according to dispersal mode, seed size and whether they originated from local (i.e. from dropped) or immigrant (i.e. from actively dispersed) seeds. Fragment size negatively correlated with number of species of medium to large vertebrate seed-dispersers and number of seedlings of large-seeded species, but had no influence on functional traits of the adult-tree community. Between 41% and 61% of all seedlings were considered as immigrants and the proportion of immigrant seedlings of large-seeded tree species was negatively correlated with forest size. The results suggest that biased defaunation in small forest fragments may seriously reduce recruitment of large-seeded tree species (>1.4 cm length) dispersed by vertebrates, negatively affecting successional trajectories of small forest fragments."

SIBE San Cristóbal
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49286-10
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