DOI: 10.1007/s10531-020-01935-5
论文题名: Modelling changes in forest attributes driven by human activities at different spatial scales in the subtropical Atlantic Forest
作者: Lingner D.V. ; Rodrigues A.V. ; Oliveira L.Z. ; de Gasper A.L. ; Vibrans A.C.
刊名: Biodiversity and Conservation
ISSN: 9603115
出版年: 2020
卷: 29, 期: 4 语种: 英语
英文关键词: Biotic homogenization
; Edge effects
; Landscape matrix
; Second-growth forest
; Topographic heterogeneity
英文摘要: Human activities are the main drivers of biotic homogenization, thus affecting ecosystem functions. In this study, we aimed to investigate the relationship among anthropogenic disturbances and forest attributes. Moreover, we sought to identify direct and indirect effects of topographic heterogeneity (TH), more specifically of standard deviation of altitude, on anthropogenic disturbances and forest attributes, respectively, through a path analysis. We used data gathered on 186 systematically distributed sample plots located in the Brazilian subtropical Evergreen Rainforest. We selected 14 predictor variables related to anthropogenic disturbances aiming to model seven forest attributes related to species diversity, composition, and structure. The aboveground biomass, rarefied species richness, proportion of standing dead trees, and proportion of individuals of pioneer species in the regeneration layer were better predicted by global linear regression models. The proportions of individuals of pioneer species in the canopy layer and of threatened species in the canopy and regeneration layers were better explained by local geographically weighted regression models. Human activities at different spatial scales may lead to disturbances (e.g., edge effects and habitat fragmentation), thus driving changes in forest attributes. The land use amidst forest remnants was related to biomass production and biotic homogenization. Logging and road networks may imperil the maintenance of threatened species. The path analysis showed that TH indirectly affects species richness via pasture area. Furthermore, topography appeared to act as a barrier for the expansion of certain human activities over the landscape. Our findings evoked the need for implementation of adaptative conservation strategies. © 2020, Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158933
Appears in Collections: 气候变化与战略
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作者单位: Departamento de Engenharia Florestal, Universidade Regional de Blumenau, Rua São Paulo, 3250, Itoupava Seca, Blumenau, SC 89030-000, Brazil; Programa de Pós-graduação em Ecologia, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 9500, Agronomia, Porto Alegre, RS 91501-970, Brazil; Programa de Pós-graduação em Engenharia Florestal, Universidade Regional de Blumenau, Rua São Paulo, 3250, Itoupava Seca, Blumenau, SC 89030-000, Brazil
Recommended Citation:
Lingner D.V.,Rodrigues A.V.,Oliveira L.Z.,et al. Modelling changes in forest attributes driven by human activities at different spatial scales in the subtropical Atlantic Forest[J]. Biodiversity and Conservation,2020-01-01,29(4)