Species–environment sorting explains latitudinal patterns in spatiotemporal β‐diversity for freshwater macroinvertebrates

Author:

He Siwen1ORCID,Wang Beixin2,Chen Kai23,Li Ning4,Soininen Janne5ORCID

Affiliation:

1. Key Laboratory of Eco‐Environment of Three Gorges Region, Ministry of Education, Chongqing University Chongqing China

2. Department of Entomology, Nanjing Agricultural University Nanjing China

3. State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University Haikou China

4. College of Agriculture and Animal Husbandry, Qinghai University Xining China

5. Department of Geosciences and Geography, University of Helsinki Helsinki Finland

Abstract

Understanding how and why β‐diversity varies along latitude is a long‐standing challenge in community ecology and rarely addressed in both space and time. We aimed to explore the spatiotemporal variations in macroinvertebrate β‐diversity and their underlying drivers in eight biogeographic regions covering a substantial latitudinal gradient of more than 40 degrees. By combining β‐diversity partitioning and distance decay of community similarity analyses, we found that subtropical β‐diversity varies more in space relative to variation in time compared with temperate β‐diversity, as we predicted. This is probably because subtropical β‐diversity is shaped by species–environment sorting (SS), caused by habitat heterogeneity and species specialization, more strongly in space relative to time than temperate β‐diversity. Our study highlights the importance of SS in shaping latitudinal gradients of β‐diversity in space and time.

Publisher

Wiley

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