Evaluating the relationship between spatial heterogeneity and temporal variability of larval fish assemblages in a coastal marine ecosystem (Haizhou Bay,China) |
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| Authors: | Zengguang Li Zhenjiang Ye Rong Wan Yong Chen Yongjun Tian Yiping Ren Hong Liu Haisheng Hu Robert Boenish |
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| Affiliation: | 1. College of Fisheries, Ocean University of China, Qingdao, China;2. School of Marine Sciences, University of Maine, Orono, ME, USA;3. National Engineering Research Center for Oceanic Fisheries, Shanghai, China;4. Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China;5. Xinjiang Fisheries Research Institute, Urumqi, China;6. Jiangsu Marine Fisheries Research Institute, Nantong, China |
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| Abstract: | In coastal marine ecosystems, spatial patterns of larval fish assemblages (LFAs) tend to exhibit geographic stability because of relatively stable spawning site selection and predictable oceanographic phenomena such as eddies. To evaluate the relationship between spatial heterogeneity and temporal variability of LFAs, we conducted a high spatiotemporal resolution ichthyoplankton survey from April to July in 2013 in the shallow waters (<20 m) of Haizhou Bay, China. Our analysis indicated three distinct assemblages, which were stable geographically but exhibited a gradual and directional change of species composition and abundance over our study period. Sea surface temperature was the most important environmental co‐variate for determining temporal variability of LFAs, likely owing to temperature effects of species composition and spawning period selection of adult fish, along with known temperature‐dependent survival rates of larval fish. Study of LFA spatiotemporal dynamics is essential for improved understanding of adult fish spawning behavior, and has potential to inform design and implementation of conservation and management measures (e.g. marine protected areas) in coastal systems. |
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| Keywords: | hydrographic conditions ichthyoplankton composition larval fish assemblages spatial heterogeneity temporal variability |
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