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Type: Artigo de periódico
Title: Seed banks on Attalea phalerata (Arecaceae) stems in the Pantanal wetland, Brazil
Author: Correa, CE
Fischer, E
dos Santos, FAM
Abstract: Seeds can accumulate in the soil or elsewhere, such as on the stems of palms when these are covered by persistent sheaths. These sheaths could act as a safe site for some species. Here, we studied whether persistent sheaths of the palm Attalea phalerata (Arecaceae) are available sites for seed accumulation in the Pantanal wetland of Brazil. We also investigated whether the composition, richness and diversity of species of seeds in the persistent sheaths are determined by habitat (riparian forest and forest patches) and/or season (wet and dry). All accumulated material was collected from ten persistent sheaths along the stems of 64 A. phalerata individuals (16 per habitat and 16 per season). The material was then individually inspected under a stereomicroscope to record seed species and number. Of the 640 sheaths sampled, 65 contained seeds (n 3468). This seed bank included 75 species belonging to 12 families, and was primarily composed of small, endozoochoric seeds, with a few abundant species (Cecropia pachystachya and Ficus pertusa). Moraceae was the richest family (four species) and Urticaceae the most abundant (1594 seeds). Stems of A. phalerata in the riparian forest had 18 times more seeds and 13 times more species than those in forest patches. In the wet season we sampled 41 times more seeds and 22 more species on palm stems than in the dry season. Richness did not differ between habitats, but was higher in the wet season. Abundance was higher in forest patches and in the wet season. Attalea phalerata stems contain a rich seed bank, comparable to soil seed banks of tropical forests. As most of these seeds are not adapted to grow in flooding conditions, palm stems might be regarded as safe sites for seeds (and seedlings) to escape from the seasonal flooding of the Pantanal.
Subject: Attalea phalerata
Cecropia pachystachya
palm tree
palm seed bank
seed community
seed dispersal
Pantanal wetland
Country: Inglaterra
Editor: Oxford Univ Press
Citation: Annals Of Botany. Oxford Univ Press, v. 109, n. 4, n. 729, n. 734, 2012.
Rights: fechado
Identifier DOI: 10.1093/aob/mcr317
Date Issue: 2012
Appears in Collections:Unicamp - Artigos e Outros Documentos

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