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Abstract:

In Neotropical humid forest, the majority of tree species have seeds dispersed by vertebrates. Seed deposition by vertebrates is often spatially aggregated and a low per capita survival for seeds and seedlings is predicted. However, mortality factors could be saturated by high densities. I evaluated whether recruitment of saplings of species dispersed by black and gold howlers (Alouatta caraya) in latrines is higher than at control sites: (1) below parent trees, (2) in trees not used by monkeys to sleep, (3) randomly chosen sites within the forest, and determined whether howlers may influence current floristic composition of the Paraná River flooded forest. I recorded saplings several years old in the territories of five monkey groups. In total, I found four times more saplings in latrines than in the other areas, and results suggest that latrines are recruitment foci for most species, though larger samples would be required to assess this for every species. Frequency distribution of the diameter of tallest saplings of more abundant species reflected recruitment over time. I found saplings of more species growing in latrines than outside of them. Saplings higher than 1 m of two species of laurels (Ocotea diospyrifolia and Nectandra megapotamica) and one species of Myrtaceae (Eugenia punicifolia) had higher densities in latrines than below parent trees. Results suggest that mortality factors were saturated in latrines and that sapling may grow at a higher rate in latrines. In relation to the influence on floristic composition E. burkartiana, an uncommon species in the forest, could increase in abundance as consequence of seed dispersal by howlers. © 2011 The Ecological Society of Japan.

Registro:

Documento: Artículo
Título:The Impact of Seed Dispersal by Black and Gold Howler Monkeys on Forest Regeneration
Autor:Bravo, S.P.
Filiación:Laboratorio de Ecología Funcional, CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, 4to piso, 1428 Buenos Aires, Argentina
Palabras clave:Argentina; Eugenia punicifolia; Flooded forest; Ocotea diospyrifolia; Paraná River; Saplings; dicotyledon; feces; floodplain forest; floristics; mortality; Neotropic Ecozone; primate; rainforest; recruitment (population dynamics); regeneration; sapling; seed dispersal; seedling; survival; Argentina; Parana River; Alouatta; Alouatta caraya; Haplorhini; Lauraceae; Myrtaceae; Nectandra megapotamica; Ocotea; Vertebrata
Año:2012
Volumen:27
Número:2
Página de inicio:311
Página de fin:321
DOI: http://dx.doi.org/10.1007/s11284-011-0904-6
Título revista:Ecological Research
Título revista abreviado:Ecol. Res.
ISSN:09123814
CODEN:ECRSE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09123814_v27_n2_p311_Bravo

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Citas:

---------- APA ----------
(2012) . The Impact of Seed Dispersal by Black and Gold Howler Monkeys on Forest Regeneration. Ecological Research, 27(2), 311-321.
http://dx.doi.org/10.1007/s11284-011-0904-6
---------- CHICAGO ----------
Bravo, S.P. "The Impact of Seed Dispersal by Black and Gold Howler Monkeys on Forest Regeneration" . Ecological Research 27, no. 2 (2012) : 311-321.
http://dx.doi.org/10.1007/s11284-011-0904-6
---------- MLA ----------
Bravo, S.P. "The Impact of Seed Dispersal by Black and Gold Howler Monkeys on Forest Regeneration" . Ecological Research, vol. 27, no. 2, 2012, pp. 311-321.
http://dx.doi.org/10.1007/s11284-011-0904-6
---------- VANCOUVER ----------
Bravo, S.P. The Impact of Seed Dispersal by Black and Gold Howler Monkeys on Forest Regeneration. Ecol. Res. 2012;27(2):311-321.
http://dx.doi.org/10.1007/s11284-011-0904-6