期刊
SOUTHERN FORESTS-A JOURNAL OF FOREST SCIENCE
卷 84, 期 2, 页码 164-173出版社
TAYLOR & FRANCIS LTD
DOI: 10.2989/20702620.2022.2105178
关键词
plant and soil; spatial structure; species distribution; species ordination; RDA; variance partitioning
类别
资金
- Banco Nacional de Desenvolvimento Economico e Social (BNDES)
- Fundacao de Apoio a Pesquisa Cientifica e Tecnologica do Estado de Santa Catarina (FAPESC)
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [141232/2018-8, 306216/2013-2, 311303/2020-0]
- Instituto do Meio Ambiente de Santa Catarina (IMA) [32025/2019]
The conversion of native forests into pastures is a common practice in Brazil, but abandoned pastures have the potential for natural regeneration and forest restoration. This study found that the variation in species abundance of regenerating forests on abandoned pastures is more closely related to environmental factors than to random spatial processes.
The conversion of native forests into pastures is still a common practice in Brazil. Abandoned pastures have great potential for natural regeneration and therefore could play an important role in meeting the enormous demand for forest restoration. Few studies, however, have investigated the extent to which spatially-structured environmental variables and community structure are correlated with the variation in species abundance of regenerating forests on abandoned pastures. Therefore, we aimed to determine whether environmental and spatial variables were capable of explaining the variation in abundance of woody species on abandoned pastures in the subtropical Atlantic Forest. We systematically distributed 45 sample plots with size and inclusion criteria that changed according to the vegetation layer in three different abandoned pastures. In general, most of the variation in species abundance that our models were able to explain was correlated with spatially-unstructured physical-chemical soil properties. A smaller part of the variation was correlated with spatially-structured soil variables and topography-related variables. An even smaller portion of the variation was spatially-structured but was not correlated with spatially-structured environmental variables. Therefore, our results suggest that the variation in species abundance of regenerating subtropical Atlantic forests on abandoned pastures is more closely related to niche-based processes mediated by environmental variables than to stochastic spatial processes.
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