生态学报2017，Vol.37Issue(16)：5522-5530,9.DOI:10.5846/stxb201605301035
温州湾春季主要游泳动物生态位与种间联结性
A study of niche and interspecific association and functional group of major nekton in the spring of Wenzhou Bay
摘要
Abstract
According to the fishery resources survey data of Wenzhou Bay in Spring 2013 (May) and Spring 2014 (May),we used spatial niche breadth and overlap to determine the major niches of nekton.A series of methods,including the variance ratio (VR) method,x2 test,the association coefficient (AC),percentage of co-occurrence (PC),and functional group classification and trophic level constituents combined the means of niches were used to analyze the relationships among the major marine nekton species.The results showed that there were 18 major nekton species.The three dominant species were Amblychaeturichthys hexanema,Harpodon nehereus,and Pampus argenteus,which had large spatial niches.The other 15 species were main species.In general,there were large differences in the niche overlap values among the major nekton populations,with a maximum value of 0.88 and a minimum of 0.01,indicating a possible resource utilization competition among some nekton species.The VR value was greater than 1 at 9.90,and the W value was 366.39,which was considerably greater than the confidence interval (8.67,27.59).There were significantly positive correlations between the major nekton community species.The percentage co-occurrence of species showed that only three pairs had strong positive association,and no unrelated species pairs was revealed,have not unrelated species pairs.The coupling coefficient showed that 110 pairs of species tended to be independent,indicating that species were independent distributions.According to the type of feeding,the major nekton species could be divided into 5 functional groups:the planktophagous group (Pl),the phytophagous group (Ph),the carnivorous group (C),the omnivorous group (O),and the detritivorous group (D).In terms of percentages of the total nekton,these groups could be ordered as follows:C ＞ O =P1 ＞ D ＞ Ph.Based on the relationship among the functional groups,the trophic levels for major nekton species varied from the second to fourth trophic levels,the third and fourth trophic levels were the major trophic leves in our study.A complex food web is formed between each trophic level.关键词
生态位/种间联结/功能群Key words
niche/interspecific association/functional group引用本文复制引用
李超男,水玉跃,田阔,杜肖,孙鹏,董静瑞,水柏年..温州湾春季主要游泳动物生态位与种间联结性[J].生态学报,2017,37(16):5522-5530,9.基金项目
浙江省软科学研究重点项目(2015C25018) （2015C25018）
国家自然科学基金项目(41006075) （41006075）
浙江省重中之重学科“海洋科学学科”项目 （）
