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| Registros recuperados : 6 | |
| 6. |  | VIEIRA, F. de A.; NOVAES, R. M. L.; FAJARDO, C. G.; SANTOS, R. M. dos; ALMEIDA, H. de S.; CARVALHO, D. de; LOVATO, M. B. Holocene southward expansion in seasonally dry tropical forests in South America: phylogeography of Ficus bonijesulapensis (Moraceae). Botanical Journal of the Linnean Society, London, v. 177, n. 2, p. 189-201, 2015.| Biblioteca(s): Embrapa Meio Ambiente. |
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| Registros recuperados : 6 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
06/01/2015 |
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Data da última atualização: |
27/04/2015 |
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Autoria: |
MANZAN, M. F.; FAJARDO, C. G.; VIEIRA, F. de A. |
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Afiliação: |
Maira Fontes Manzan, Universidade Federal do Rio Grande do Norte; Cristiane Gouvêa Fajardo, Universidade Federal do Rio Grande do Norte; Fábio de Almeida Vieira, Universidade Federal do Rio Grande do Norte. |
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Título: |
Spatial pattern analysis and demography of two tropical trees in the Brazilian Caatinga. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Pesquisa Florestal Brasileira, Colombo, v. 34, n. 80, p. 331-336, out./dez. 2014. |
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DOI: |
10.4336/2014.pfb.34.80.634 |
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Idioma: |
Inglês |
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Conteúdo: |
Aspidosperma pyrifolium (Apocynaceae) and Caesalpinia pyramidalis (Fabaceae) share the same habitat in the Brazilian Caatinga domain. In this paper, we investigate the intra and inter-species interactions between these two plants using spatial pattern analysis among cohorts. The results showed that the adult trees of each species present higher densities at distances shorter than 9 m to 12 m. However, due to seed dispersal via autochory, we expected a more aggregate density for C. pyramidalis than A. pyrifolium as the later disperses seeds through anemochory. Difference in spatial aggregation among cohorts was not observed and therefore the results contradict the expectations of the Janzen-Connell hypothesis. It is likely that this is associated with anthropogenic factors in the past such as fire, animal husbandry and logging. Using a bivariate analysis of the neighborhood density, we also confirmed the significant coexistence between the two species. This coexistence could be explained by the process of positive interspecific interactions, such as facilitation, which is common in semi-arid regions under stressful conditions. |
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Palavras-Chave: |
Coexistência de plantas; Cohorts; Coortes; Padrão espacial; Plant coexistence; Spatial patterning. |
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Thesagro: |
Aspidosperma Pyrifolium; Caesalpinia Pyramidalis. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/122872/1/Spatial.pdf
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Marc: |
LEADER 01942naa a2200253 a 4500
001 2004386
005 2015-04-27
008 2014 bl uuuu u00u1 u #d
024 7 $a10.4336/2014.pfb.34.80.634$2DOI
100 1 $aMANZAN, M. F.
245 $aSpatial pattern analysis and demography of two tropical trees in the Brazilian Caatinga.$h[electronic resource]
260 $c2014
520 $aAspidosperma pyrifolium (Apocynaceae) and Caesalpinia pyramidalis (Fabaceae) share the same habitat in the Brazilian Caatinga domain. In this paper, we investigate the intra and inter-species interactions between these two plants using spatial pattern analysis among cohorts. The results showed that the adult trees of each species present higher densities at distances shorter than 9 m to 12 m. However, due to seed dispersal via autochory, we expected a more aggregate density for C. pyramidalis than A. pyrifolium as the later disperses seeds through anemochory. Difference in spatial aggregation among cohorts was not observed and therefore the results contradict the expectations of the Janzen-Connell hypothesis. It is likely that this is associated with anthropogenic factors in the past such as fire, animal husbandry and logging. Using a bivariate analysis of the neighborhood density, we also confirmed the significant coexistence between the two species. This coexistence could be explained by the process of positive interspecific interactions, such as facilitation, which is common in semi-arid regions under stressful conditions.
650 $aAspidosperma Pyrifolium
650 $aCaesalpinia Pyramidalis
653 $aCoexistência de plantas
653 $aCohorts
653 $aCoortes
653 $aPadrão espacial
653 $aPlant coexistence
653 $aSpatial patterning
700 1 $aFAJARDO, C. G.
700 1 $aVIEIRA, F. de A.
773 $tPesquisa Florestal Brasileira, Colombo$gv. 34, n. 80, p. 331-336, out./dez. 2014.
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Embrapa Florestas (CNPF) |
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