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The Harvesting of the Endangered Palm Euterpe edulis in the Brazilian Atlantic Forest: The Case of Linear Canopy Openings

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Journal of Geoscience and Environment Protection 2023年第12期11卷 151-162页

作者： Pablo José Francisco Pena Rodrigues mariana de andrade iguatemy Talita Reis Instituto de Pesquisas Jardim Botanico do Rio de Janeiro Rua Pacheco Le&#227o Rio de Janeiro Brazil

The palm Euterpe edulis was historically very exploited by humans and even today, many individuals are cut down by collectors to harvest the edible palm hearts. The ecological aspects of this anthropogenic pressure and its related effects are poorly understood. Here we investigate if linear canopy openings in a fragment of Brazilian Atlantic Forest can cause edge effects and facilitate predatory harvesting by humans. We sampled in Tinguá Biological Reserve (Southeastern Brazil) native palm populations at forest edges adjacent to two linear canopy openings, and in the forest interior far from any edge. Our 8-year monitoring showed that the linear canopy openings negatively affected the palm populations reducing its density and regeneration mainly on edges, but no local extinction was observed. Thus, the direct human impact from harvesting, adverse survival conditions on edges and interspecific competition causes population declines with no local extinction, so this suggests that E. edulis may resist even under strong anthropogenic pressure.

关键词： Extinction Exploitation Forest Product Species Survival Sustainability

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The effect of water-level fluctuations on swamp forest colonization by seedlings of <i>Tabebuia cassinoides</i>DC. (Bignoniaceae)

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Open Journal of Ecology 2011年第3期1卷 63-64页

作者： mariana de andrade iguatemy Pablo José Francisco Pena Rodrigues 不详

Establishment of Tabebuia cassinoides seedlings is related to water-level fluctuations in southeastern Brazil swamp forests. Nine years of annual monitoring of 48 individuals established during a drought in November 1997, when the swamp was unflooded, suggested that their establishment depends on this unpredictable event. This conclusion is further sustained by the wide variability of the seedling cohort size structure, and the fascicular root conformation that holds the shoots erect.

关键词： Tropical Rain Forest Wetland Seedling Establishment Safe Site Root Morphology

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