Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2017.10.059 |
Functional diversity mediates contrasting direct and indirect effects of fragmentation on below- and above-ground carbon stocks of coastal dune forests | |
Rolo, Victor1; Olivier, Pieter I.1; Pfeifer, Marion2; van Aarde, Rudolph J.1 | |
2018 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT
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ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2018 |
卷号 | 407页码:174-183 |
文章类型 | Article |
语种 | 英语 |
国家 | South Africa; England |
英文摘要 | Changes in structure and functioning of tree communities in response to forest fragmentation may alter tropical forest's capacity to store carbon and regulate climate. However, evidence for indirect effects of forest fragmentation on above - and belowground carbon pools through changes in forest biodiversity is scarce. Here we focus on understanding the relative importance of taxonomic and functional diversity and tree cover to explain above- and below-ground carbon stocks in coastal dune forest fragments. We surveyed tree species composition and structure in six coastal forest patches varying in size from 215 to 13350 ha, in Kwa-Zulu Natal, South Africa. For each fragment, we estimated carbon stocks of two pools, aboveground biomass (AGC) and soil organic carbon (SOC). We used structural equation models to test if and to what extent the effects of forest fragmentation on AGC and SOC were mediated by tree cover and taxonomic and functional diversity. Our results showed that forest fragmentation directly reduced AGC, but increased SOC. In contrast, forest fragmentation indirectly, through decreasing functional diversity, increased AGC, but decreased SOC. Small patches therefore had few tree species that were functional similar and had high AGC, but low SOC, which led to a negative relationship between species richness and AGC. Tree cover was not affected by fragmentation, and had a direct positive effect on AGC but not on SOC. Our results suggest that forest fragmentation simultaneously affect multiple processes which directly and indirectly affects carbon stocks of different pools. Fragmentation may trigger a process of biotic homogenization, in which a few species are positively related with carbon storage above-, but not below ground. |
英文关键词 | Biodiversity homogenization Carbon sequestration Fragmented landscapes Functional traits Piecewise structural equation models |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000418214300020 |
WOS关键词 | SPECIES RICHNESS ; COMMUNITY COMPOSITION ; TROPICAL FORESTS ; BIOMASS DYNAMICS ; PLANT TRAITS ; SEQUESTRATION ; CONSERVATION ; PRODUCTIVITY ; PERFORMANCE ; DISTURBANCE |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
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/22540 |
专题 | 气候变化 |
作者单位 | 1.Univ Pretoria, Conservat Ecol Res Unit, ZA-0028 Pretoria, South Africa; 2.Newcastle Univ, Sch Biol, Newcastle NE1 7RU, Tyne & Wear, England |
推荐引用方式 GB/T 7714 | Rolo, Victor,Olivier, Pieter I.,Pfeifer, Marion,et al. Functional diversity mediates contrasting direct and indirect effects of fragmentation on below- and above-ground carbon stocks of coastal dune forests[J]. FOREST ECOLOGY AND MANAGEMENT,2018,407:174-183. |
APA | Rolo, Victor,Olivier, Pieter I.,Pfeifer, Marion,&van Aarde, Rudolph J..(2018).Functional diversity mediates contrasting direct and indirect effects of fragmentation on below- and above-ground carbon stocks of coastal dune forests.FOREST ECOLOGY AND MANAGEMENT,407,174-183. |
MLA | Rolo, Victor,et al."Functional diversity mediates contrasting direct and indirect effects of fragmentation on below- and above-ground carbon stocks of coastal dune forests".FOREST ECOLOGY AND MANAGEMENT 407(2018):174-183. |
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