A test of the Janzen-Connell model with two common tree species in Amazonian forest
Field experiments and survival analysis were used to test whether the Janzen-Connell model operated for two common Amazonian tree species in Peru: the midstorey palm, Astrocaryum murumuru, and the canopy-emergent legume, Dipteryx micrantha. Seed and seedling survival patterns of these species partia...
| Autor principal: | Sobral Cintra, R. J. de |
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| Grau: | Artigo |
| Idioma: | English |
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Journal of Tropical Ecology
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/19340 |
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oai:repositorio:1-19340 |
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oai:repositorio:1-19340 A test of the Janzen-Connell model with two common tree species in Amazonian forest Sobral Cintra, R. J. de Density Dependence Janzen-connell Model Seed Survival Seedling Survival Amazonia Peru Arecaceae Arecaceae Astrocaryum Astrocaryum Murumuru Astrocaryum Murumuru Dipteryx Dipteryx Micrantha Dipteryx Micrantha Fabaceae Fabaceae Hexapoda Insecta Mammalia Field experiments and survival analysis were used to test whether the Janzen-Connell model operated for two common Amazonian tree species in Peru: the midstorey palm, Astrocaryum murumuru, and the canopy-emergent legume, Dipteryx micrantha. Seed and seedling survival patterns of these species partially supported the model, depending on tree species, type of predator, spatial scale and the particular year. At a small scale of a 2.5-ha plot, Astrocaryum seed predation by insects and mammals was density-dependent. At a larger scale of 100 ha, Dipteryx seed survival increased with distance from conspecific adults, but for Astrocaryum seeds there was no distance dependence. At the scale of 200-400 ha Dipteryx seed survival was negatively related to the number of individuals present in groups of conspecific adult trees. In 1992 a higher proportion of Astrocaryum seedlings survived far from, compared with close to, conspecific adult trees, whilst in 1993 more Dipteryx seedlings survived beneath conspecific adult trees than farther away. 2020-06-15T22:07:36Z 2020-06-15T22:07:36Z 1997 Artigo https://repositorio.inpa.gov.br/handle/1/19340 10.1017/S0266467400010841 en Volume 13, Número 5, Pags. 641-658 Restrito Journal of Tropical Ecology |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Density Dependence Janzen-connell Model Seed Survival Seedling Survival Amazonia Peru Arecaceae Arecaceae Astrocaryum Astrocaryum Murumuru Astrocaryum Murumuru Dipteryx Dipteryx Micrantha Dipteryx Micrantha Fabaceae Fabaceae Hexapoda Insecta Mammalia |
| spellingShingle |
Density Dependence Janzen-connell Model Seed Survival Seedling Survival Amazonia Peru Arecaceae Arecaceae Astrocaryum Astrocaryum Murumuru Astrocaryum Murumuru Dipteryx Dipteryx Micrantha Dipteryx Micrantha Fabaceae Fabaceae Hexapoda Insecta Mammalia Sobral Cintra, R. J. de A test of the Janzen-Connell model with two common tree species in Amazonian forest |
| topic_facet |
Density Dependence Janzen-connell Model Seed Survival Seedling Survival Amazonia Peru Arecaceae Arecaceae Astrocaryum Astrocaryum Murumuru Astrocaryum Murumuru Dipteryx Dipteryx Micrantha Dipteryx Micrantha Fabaceae Fabaceae Hexapoda Insecta Mammalia |
| description |
Field experiments and survival analysis were used to test whether the Janzen-Connell model operated for two common Amazonian tree species in Peru: the midstorey palm, Astrocaryum murumuru, and the canopy-emergent legume, Dipteryx micrantha. Seed and seedling survival patterns of these species partially supported the model, depending on tree species, type of predator, spatial scale and the particular year. At a small scale of a 2.5-ha plot, Astrocaryum seed predation by insects and mammals was density-dependent. At a larger scale of 100 ha, Dipteryx seed survival increased with distance from conspecific adults, but for Astrocaryum seeds there was no distance dependence. At the scale of 200-400 ha Dipteryx seed survival was negatively related to the number of individuals present in groups of conspecific adult trees. In 1992 a higher proportion of Astrocaryum seedlings survived far from, compared with close to, conspecific adult trees, whilst in 1993 more Dipteryx seedlings survived beneath conspecific adult trees than farther away. |
| format |
Artigo |
| author |
Sobral Cintra, R. J. de |
| title |
A test of the Janzen-Connell model with two common tree species in Amazonian forest |
| title_short |
A test of the Janzen-Connell model with two common tree species in Amazonian forest |
| title_full |
A test of the Janzen-Connell model with two common tree species in Amazonian forest |
| title_fullStr |
A test of the Janzen-Connell model with two common tree species in Amazonian forest |
| title_full_unstemmed |
A test of the Janzen-Connell model with two common tree species in Amazonian forest |
| title_sort |
test of the janzen-connell model with two common tree species in amazonian forest |
| publisher |
Journal of Tropical Ecology |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/19340 |
| _version_ |
1787141334860038144 |
| score |
11.755432 |