globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.foreco.2017.03.020
Scopus记录号: 2-s2.0-85016162460
论文题名:
The effect of forest fragmentation on the soil seed bank of Central Amazonia
作者: Sousa T.R.; Costa F.R.C.; Bentos T.V.; Leal Filho N.; Mesquita R.C.G.; Ribeiro I.O.
刊名: Forest Ecology and Management
ISSN:  0378-1127
出版年: 2017
卷: 393
起始页码: 105
结束页码: 112
语种: 英语
英文关键词: Deforestation ; Floristic composition ; Forest fragments ; Natural regeneration ; Seed bank ; Seed stock
Scopus关键词: Agriculture ; Deforestation ; Reforestation ; Soils ; Anthropic disturbances ; Disturbance gradients ; Floristic compositions ; Forest fragmentations ; Forest fragments ; Natural regeneration ; Non-metric multidimensional scaling ; Seed bank ; Forestry ; Melastomataceae
英文摘要: Deforestation of tropical forests has contributed to the formation of fragmented landscapes, surrounded mainly by a matrix of secondary forests, pastures and agriculture. In this study we evaluated the fragment-area effects on the density, diversity and composition of the soil seed bank. Fragments of primary forest of different sizes (1, 10 and 100 ha) and continuous primary forests were sampled in a region of terra firme forest in Central Amazonia. We collected 180 soil samples (45 samples per treatment), and monitored seedling emergence from the soil seed bank in a greenhouse for seven months. Density of emerged seedlings, floristic composition, richness and diversity of species were compared among treatments with Kruskal-Wallis non-parametric test, Mann-Whitney test, Fisher's Alpha diversity index and Non-metric multidimensional scaling (NMDS). Seedling density was inversely proportional to the size of the fragment, being higher in fragments of 1 ha, 10 ha, and lower in the primary forest and fragments of 100 ha. Diversity was higher in the fragments when compared to the primary forests. Melastomataceae was the most abundant family in all treatments. Species composition changed along the disturbance gradient, and is dominated, in the smaller fragments by species that are indicators of degraded environments. Results suggested that the area of the forest fragments affects the size and composition of the soil seed bank, and can significantly influence the potential resilience and regeneration of these sites in the event of natural or anthropic disturbance. © 2017 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64374
Appears in Collections:影响、适应和脆弱性

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作者单位: Programa de Pós-Graduação em Ciências de Florestas Tropicais, Instituto Nacional de Pesquisas da Amazônia, Av. André André Araújo, 2936, Campus I, Aleixo, Manaus, Amazonas, Brazil; Coordenação de Pesquisas em Biodiversidade, Instituto Nacional de Pesquisas da Amazônia, Av. André André Araújo, 2936, Campus I, Aleixo, Manaus, Amazonas, Brazil; Projeto Dinâmica Biológica de Fragmentos Florestais, Instituto Nacional de Pesquisas da Amazônia, Av. André André Araújo, 2936, Campus I, Aleixo, Manaus, Amazonas, Brazil; Departamento de Ecologia, Instituto Nacional de Pesquisas da Amazônia, Av. André André Araújo, 2936, Campus I, Aleixo, Manaus, Amazonas, Brazil; Coordenação de Dinâmica Ambiental, Instituto Nacional de Pesquisas da Amazônia, Av. André André Araújo, 2936, Campus I, Aleixo, Manaus, Amazonas, Brazil; Universidade do Estado do Amazonas, Programa de Pós-Graduação em Clima e Ambiente, Av. Darcy Vargas, 1200, Parque Dez de Novembro, Manaus, Amazonas, Brazil

Recommended Citation:
Sousa T.R.,Costa F.R.C.,Bentos T.V.,et al. The effect of forest fragmentation on the soil seed bank of Central Amazonia[J]. Forest Ecology and Management,2017-01-01,393
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