Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aa9f5e |
Chronic human disturbance affects plant trait distribution in a seasonally dry tropical forest | |
Sfair, Julia C.1,2; de Bello, Francesco2; de Franca, Thaysa Q.3; Baldauf, Cristina4; Tabarelli, Marcelo1 | |
2018-02-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2018 |
卷号 | 13期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | Brazil; Czech Republic |
英文摘要 | The effects of human disturbance on biodiversity can be mediated by environmental conditions, such as water availability, climate and nutrients. In general, disturbed, dry or nutrient-depleted soils areas tend to have lower taxonomic diversity. However, little is known about how these environmental conditions affect functional composition and intraspecific variability in tropical dry forests. We studied a seasonally dry tropical forest (SDTF) under chronic anthropogenic disturbance (CAD) along rainfall and soil nutrient gradients to understand how these factors influence the taxonomic and functional composition. Specifically we evaluated two aspects of CAD, wood extraction and livestock pressure (goat and cattle grazing), along soil fertility and rainfall gradients on shrub and tree traits, considering species turnover and intraspecific variability. In addition, we also tested how the traits of eight populations of the most frequent species are affected by wood extraction, livestock pressure, rainfall and soil fertility. In general, although CAD and environmental gradients affected each trait of the most widespread species differently, the most abundant species also had a greater variation of traits. Considering species turnover, wood extraction is associated with species with a smaller leaf area and lower investment in leaf mass, probably due to the indirect effects of this disturbance type on the vegetation, i.e. the removal of branches and woody debris clears the vegetation, favouring species that minimize water loss. Livestock pressure, on the other hand, affected intraspecific variation: the herbivory caused by goats and cattle promoted individuals which invest more in wood density and leaf mass. In this case, the change of functional composition observed is a direct effect of the disturbance, such as the decrease of palatable plant abundance by goat and cattle herbivory. In synthesis, CAD, rainfall and soil fertility can affect trait distribution at community and species levels, which can have significant implications for the ecosystem functioning of SDTF under increasing levels of disturbance, climate change and soil nutrient depletion. |
英文关键词 | Caatinga intraspecific variability livestock rainfall soil fertility species turnover wood extraction |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000424053000001 |
WOS关键词 | FUNCTIONAL TRAITS ; SOIL FERTILITY ; INTRASPECIFIC VARIABILITY ; GRASSLAND COMMUNITIES ; CAATINGA VEGETATION ; LEAF TRAITS ; LAND-USE ; DIVERSITY ; RESPONSES ; ECOSYSTEMS |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/33180 |
专题 | 气候变化 |
作者单位 | 1.Univ Fed Pernambuco, Deparment Bot, BR-50670901 Recife, PE, Brazil; 2.Univ South Bohemia, Fac Sci, Deparment Bot, Ceske Budejovice, Czech Republic; 3.Univ Fed Pernambuco, Graduat Environm Sci, BR-50670901 Recife, PE, Brazil; 4.Fed Rural Univ Semiarid Reg, Dept Biosci, BR-59625900 Mossoro, RN, Brazil |
推荐引用方式 GB/T 7714 | Sfair, Julia C.,de Bello, Francesco,de Franca, Thaysa Q.,et al. Chronic human disturbance affects plant trait distribution in a seasonally dry tropical forest[J]. ENVIRONMENTAL RESEARCH LETTERS,2018,13(2). |
APA | Sfair, Julia C.,de Bello, Francesco,de Franca, Thaysa Q.,Baldauf, Cristina,&Tabarelli, Marcelo.(2018).Chronic human disturbance affects plant trait distribution in a seasonally dry tropical forest.ENVIRONMENTAL RESEARCH LETTERS,13(2). |
MLA | Sfair, Julia C.,et al."Chronic human disturbance affects plant trait distribution in a seasonally dry tropical forest".ENVIRONMENTAL RESEARCH LETTERS 13.2(2018). |
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