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Titolo:
A TEST OF THE JANZEN-CONNELL MODEL WITH 2 COMMON TREE SPECIES IN AMAZONIAN FOREST
Autore:
CINTRA R;
Indirizzi:
INST NACL PESQUISAS,DEPT ECOL,CP 478 BR-69011970 MANAUS AMAZONAS BRAZIL
Titolo Testata:
Journal of tropical ecology
, volume: 13, anno: 1997,
parte:, 5
pagine: 641 - 658
SICI:
0266-4674(1997)13:<641:ATOTJM>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
NEOTROPICAL RAIN-FOREST; DIPTERYX-PANAMENSIS; DIVERSITY; RECRUITMENT; DEPENDENCE; ECOLOGY; CANOPY; PANAMA;
Keywords:
AMAZON FOREST; ASTROCARYUM PALM; DENSITY AND DISTANCE-DEPENDENT MORTALITY; DIPTERYX; JANZEN-CONNELL MODEL; PLANT DIVERSITY; SEED SURVIVAL; SEEDLING SURVIVAL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
37
Recensione:
Indirizzi per estratti:
Citazione:
R. Cintra, "A TEST OF THE JANZEN-CONNELL MODEL WITH 2 COMMON TREE SPECIES IN AMAZONIAN FOREST", Journal of tropical ecology, 13, 1997, pp. 641-658

Abstract

Field experiments and survival analysis were used to test whether theJanzen-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 ofthese species partially supported the model, depending on tree species, type of predator, spatial scale and the particular year. At a smallscale of a 2.5-ha plot, Astrocaryum seed predation by insects and mammals was density-dependent. At a larger scale of 100 ha, Dipteryx seedsurvival 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.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 04:03:51