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Low spatial congruence between temporal functional β‐diversity and temporal taxonomic and phylogenetic β‐diversity in British avifauna
Ecological Research ( IF 2 ) Pub Date : 2021-02-08 , DOI: 10.1111/1440-1703.12209
Mariana A. Tsianou 1 , Konstantinos Touloumis 1, 2 , Athanasios S. Kallimanis 1
Affiliation  

Assessing spatial and temporal patterns of biodiversity change is essential to understand how communities vary over time and confront to environmental changes for the resilience of ecosystem functioning. We use data from two bird atlases of Britain collected during the breeding periods 1988–1991 and 2008–2011 to measure temporal β‐diversity of taxonomic, functional and phylogenetic dimensions and examine the relationship and the level of congruence of the three dimensions of temporal β‐diversity and their respective partitioned components (turnover‐nestedness). Temporal β‐diversity, turnover and nestedness patterns were highly congruent for the taxonomic and phylogenetic dimension, although these dimensions were weakly associated with the functional dimension. We found higher levels of temporal changes for the taxonomic (mean Jaccard β‐diversity 0.27) and phylogenetic (mean Jaccard β‐diversity 0.21) dimensions than for the functional dimension (mean Jaccard β‐diversity 0.09), implying that despite the changes in species composition the functional composition of the communities remained less affected. For taxonomic and phylogenetic dimensions, turnover contributed more than nestedness to shaping β‐diversity, while for functional β‐diversity the two components contributed similarly. Communities at higher altitudes were also more functionally similar in 20 years but with more changes in taxonomic and phylogenetic diversity possibly due to environmental filtering. We hypothesize that the low congruence might be due to species with extreme trait values persisting throughout time and retaining the volume of functional space and thus contributing to the low temporal change of functional diversity despite the high levels of change in species composition, perhaps an indication of functional “stability.”

中文翻译:

英国鸟类中时间功能性β多样性与时间分类学和系统发育性β多样性之间的空间一致性较低

评估生物多样性变化的时空格局对于了解社区如何随时间变化并面对环境变化以增强生态系统功能的恢复能力至关重要。我们使用在1988-1991年和2008-2011年繁殖期收集的两个英国鸟图集的数据来测量分类,功能和系统发育维度的时间β多样性,并检验时间β的三个维度的关系和一致性水平多样性及其各自的组成部分(营业额嵌套)。在分类和系统发育方面,时间β多样性,周转率和嵌套模式是高度一致的,尽管这些维与功能维之间的联系较弱。我们发现分类学的时间变化水平更高(平均Jaccardβ-多样性0。27)和系统发育(平均Jaccardβ-多样性0.21)维度要比功能维度(平均Jaccardβ-多样性0.09)大,这意味着尽管物种组成发生了变化,但群落的功能组成受到的影响仍然较小。对于分类学和系统发育学方面,营业额对嵌套β-多样性的贡献大于嵌套,而对于功能性β-多样性,这两个组成部分的贡献相似。在20年中,高海拔地区的社区在功能上也更加相似,但由于环境过滤,分类学和系统发育多样性发生了更多变化。
更新日期:2021-02-08
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