浙江中南部近岸海域春季主要鱼类空间生态位  

Spatial niche of major fish species in spring in the coastal waters of central and southern Zhejiang Province, China

作　　者：张琳琳 周永东 蒋日进[1,2] 李哲 樊紫薇[1] 印瑞 朱玉丹 芮银 肖祎 ZHANG Lin-lin;ZHOU Yong-dong;JIANG Ri-jin;LI Zhe;FAN ZI-wei;YIN Rui;ZHU YU-dan;RUI Yin;XIAO Yi(Marine and Fisheries Research Institute,Zhejiang Ocean University,Zhoushan 316021,Zhejiang,China;Ministry of Agriculture Key Research Station for Fisheries Resources of Main Fishing Ground/Key Research Station of Sus-tainable Utilization for Marine Fisheries Resources,Zhejiang Institute of Marine Fisheries Research,Zhoushan 316021,Zhejiang,China)

机构地区：[1]浙江海洋大学海洋与渔业研究所,浙江舟山316021 [2]浙江省海洋水产研究所农业部重点渔场渔业资源科学观测实验站/浙江省海洋渔业资源可持续利用技术研究重点实验室,浙江舟山316021

出　　处：《应用生态学报》2020年第2期659-666,共8页Chinese Journal of Applied Ecology

基　　金：国家重点研发计划项目(2018YFD0900904,2017YFA0604904);浙江省重点研发计划项目(2019C02056)资助~~

摘　　要：基于2016年4、5月(春季)在浙江中南部近岸海域进行的2个航次渔业资源调查数据,计算浙江中南部近岸海域主要鱼类的相对重要性指数(IRI)、平均拥挤度、生态位宽度及生态位重叠值(Qik)。结果表明:浙江中南部近岸海域主要鱼类(IRI>100)共24种,生态位宽度值差异较大,相对重要性指数与生态位宽度值呈极显著正相关。春季鱼类的生态位重叠值极低,4月Qik>0.6的种对有6对,占总对数的3.9%;5月Qik>0.6的种对有5对,占总对数的4.8%。冗余分析表明,温度、盐度、深度和溶解氧是影响浙江中南部近岸海域主要鱼类分布的重要因素,主要鱼类在这些环境因子上存在生态分化现象。The relative importance index(IRI), mean crowding, niche breadth, and niche overlap(Qik) of major fish species were calculated based on two fishery resource surveys from April to May 2016(spring) in the coastal waters of central and southern Zhejiang Province. The results showed that there were 24 major fish species(IRI>100), the niche breadth values of which differed greatly and were positively correlated with IRI. The niche overlaps of fishes were extremely low in spring. The total amount of species pairs with niche overlap 0.6(Qik >0.6) were six in April and five in May, which represented 3.9% and 4.8% of the total pairs, respectively. Results from the redundancy analysis showed that the distribution of major fish species were mainly affected by temperature, salinity, water depth, and dissolved oxygen, which caused ecological differentiation of fish species.

关 键 词：鱼类 平均拥挤度 生态位宽度 生态位重叠 

分 类 号：S931[农业科学—渔业资源]