The Impact of Seed Dispersal by Black and Gold Howler Monkeys on Forest Regeneration
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...
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09123814_v27_n2_p311_Bravo http://hdl.handle.net/20.500.12110/paper_09123814_v27_n2_p311_Bravo |
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paper:paper_09123814_v27_n2_p311_Bravo2023-06-08T15:49:58Z The Impact of Seed Dispersal by Black and Gold Howler Monkeys on Forest Regeneration Bravo, Susana Patricia 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 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. Fil:Bravo, S.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09123814_v27_n2_p311_Bravo http://hdl.handle.net/20.500.12110/paper_09123814_v27_n2_p311_Bravo |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
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 |
| spellingShingle |
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 Bravo, Susana Patricia The Impact of Seed Dispersal by Black and Gold Howler Monkeys on Forest Regeneration |
| topic_facet |
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 |
| description |
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. |
| author |
Bravo, Susana Patricia |
| author_facet |
Bravo, Susana Patricia |
| author_sort |
Bravo, Susana Patricia |
| title |
The Impact of Seed Dispersal by Black and Gold Howler Monkeys on Forest Regeneration |
| title_short |
The Impact of Seed Dispersal by Black and Gold Howler Monkeys on Forest Regeneration |
| title_full |
The Impact of Seed Dispersal by Black and Gold Howler Monkeys on Forest Regeneration |
| title_fullStr |
The Impact of Seed Dispersal by Black and Gold Howler Monkeys on Forest Regeneration |
| title_full_unstemmed |
The Impact of Seed Dispersal by Black and Gold Howler Monkeys on Forest Regeneration |
| title_sort |
impact of seed dispersal by black and gold howler monkeys on forest regeneration |
| publishDate |
2012 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09123814_v27_n2_p311_Bravo http://hdl.handle.net/20.500.12110/paper_09123814_v27_n2_p311_Bravo |
| work_keys_str_mv |
AT bravosusanapatricia theimpactofseeddispersalbyblackandgoldhowlermonkeysonforestregeneration AT bravosusanapatricia impactofseeddispersalbyblackandgoldhowlermonkeysonforestregeneration |
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