期刊
GLOBAL ECOLOGY AND BIOGEOGRAPHY
卷 31, 期 7, 页码 1399-1421出版社
WILEY
DOI: 10.1111/geb.13513
关键词
beta-diversity; biogeography; environmental gradient; spatial distance; trait
资金
- Coordination for the Improvement of Higher Education Personnel (CAPES)
- Carlos Chagas Filho Research Support Foundation (FAPERJ)
- Ella and Georg Erhnrooth Foundation
- Czech Ministry of Education, Youth and Sports [LTAUSA19137]
- Czech Science Foundation [20-05840Y]
- Czech Academy of Sciences [RVO 67985939]
- Academy of Finland [309581]
- Jane and Aatos Erkko Foundation
- Research Council of Norway through its Centres of Excellence Funding Scheme [223257]
- European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (ERC-synergy project LIFEPLAN) [856506]
- CAS Key Research Program of Frontier Sciences [QYZDB-SSW-DQC043]
- National Natural Science Foundation of China [91851117]
- German Research Foundation [DFG FZT 118]
- TRY initiative on plant traits
This study provides the first global synthesis of taxonomic and functional distance decay along spatial and environmental distance. The results demonstrate that taxonomic distance decay is stronger than functional distance decay, with the fastest decay rates observed in datasets from mid-latitudes. Overall, taxonomic distance decay is a useful tool for biogeographical research, while functional distance decay may be a cost-effective option for investigating community changes in heterogeneous environments.
Aim: Understanding the variation in community composition and species abundances (i.e., beta-diversity) is at the heart of community ecology. A common approach to examine beta-diversity is to evaluate directional variation in community composition by measuring the decay in the similarity among pairs of communities along spatial or environmental distance. We provide the first global synthesis of taxonomic and functional distance decay along spatial and environmental distance by analysing 148 datasets comprising different types of organisms and environments. Location: Global. Time period: 1990 to present. Major taxa studied: From diatoms to mammals. Method: We measured the strength of the decay using ranked Mantel tests (Mantel r) and the rate of distance decay as the slope of an exponential fit using generalized linear models. We used null models to test whether functional similarity decays faster or slower than expected given the taxonomic decay along the spatial and environmental distance. We also unveiled the factors driving the rate of decay across the datasets, including latitude, spatial extent, realm and organismal features. Results: Taxonomic distance decay was stronger than functional distance decay along both spatial and environmental distance. Functional distance decay was random given the taxonomic distance decay. The rate of taxonomic and functional spatial distance decay was fastest in the datasets from mid-latitudes. Overall, datasets covering larger spatial extents showed a lower rate of decay along spatial distance but a higher rate of decay along environmental distance. Marine ecosystems had the slowest rate of decay along environmental distances. Main conclusions: In general, taxonomic distance decay is a useful tool for biogeographical research because it reflects dispersal-related factors in addition to species responses to climatic and environmental variables. Moreover, functional distance decay might be a cost-effective option for investigating community changes in heterogeneous environments.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据