The relative importance of environmental heterogeneity and dispersal limitation on spatial patterns of phytoplankton communities varies across seasons

Author:

Ge Feiyang12ORCID,Chen Bin134,Wang Shaopeng5,Zhou Qianqian1,Ma Zhiyuan13,Chen Guangcheng134,Yu Weiwei13,Han Wenxuan2ORCID,Tang Senming1,Su Shangke1,Zhang Dian1,Zhang Wanting1,Lu Xiaoqian2,An Shenqun2

Affiliation:

1. Third Institute of Oceanography Ministry of Natural Resources Xiamen People's Republic of China

2. College of Resources and Environmental Sciences China Agricultural University Beijing People's Republic of China

3. Key Laboratory of Marine Ecological Conservation and Restoration Ministry of Natural Resources Xiamen People's Republic of China

4. Observation and Research Station of Coastal Wetland Ecosystem in Beibu Gulf Ministry of Natural Resources Beihai People's Republic of China

5. College of Urban and Environmental Sciences Peking University Beijing People's Republic of China

Abstract

AbstractEnvironmental heterogeneity and dispersal limitation structure community assembly, but there is limited knowledge on how their effects vary on temporal scale. This study compiled a series of data, including phytoplankton, seawater depth and chemistry from 104 sites, to explore the spatial patterns and their drivers of phytoplankton communities in the Beibu Gulf and adjacent waters, located in the northwestern South China Sea. Our results showed that (1) the beta diversity values ranged from 0.2 to 0.84 (0.5 average), and turnover dominated. (2) The relative contributions of environmental heterogeneity and dispersal limitation to beta diversity varied seasonally, wherein former dominated in summer and winter, latter dominated in spring and autumn. (3) Hydrologic distance, pH, alkalinity, and total nitrogen were the crucial factors shaping the beta diversity pattern. This study detailed the temporal variation of the relative roles of environmental heterogeneity and dispersal limitation in shaping the patterns of phytoplankton communities, which may reflect the dynamical nature of ocean, characterized by seasonal variation in wind and hydrology. It also clarified the intrinsic linkage between these two processes in the ocean, which provides a novel insight to understanding the ocean biogeography and informs decision making for area‐based marine biodiversity conservation.

Funder

National Natural Science Foundation of China

National Key Research and Development Program of China

Publisher

Wiley

Subject

Aquatic Science,Oceanography

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