摘要
依据2010年4月、7月和11月对浙江鱼山渔场-椒江口近海海域的海洋调查资料,分析该海域浮游动物生物量、丰度、优势种和多样性指数等生态特征的季节变化及其与浮游植物丰度之间的关系。结果表明:浮游动物生物量、丰度、优势种和多样性指数均存在明显的季节变化,其中春季浮游动物生物量和丰度均是3个季节最高,丰度的高值区位于调查海域的南部,中华哲水蚤(Calanus sinicus)占绝对优势;夏季浮游动物生物量和丰度次之,丰度的高值区在大陈岛西南海域,以中华哲水蚤、太平洋纺锤水蚤(Acartia pacifica)、精致真刺水蚤(Euchaeta concinna)和海龙箭虫(Sagitta nagae)占优势;秋季浮游动物生物量和丰度最低,丰度分布较为均匀,以肥胖箭虫(Sagitta enflata)和双生水母(Diphyes chamissonis)占优势。浮游动物丰度调查结果与同时期浮游植物丰度的调查结果相比,3个季节浮游植物与浮游动物丰度的高值区并不一致,这是因为影响浮游植物丰度的主要因素是营养盐和光照,而浮游动物的分布主要是受水团和海流的影响。上述生态特性的季节变化规律与椒江口海域的季节性水团变化密切相关,春季以低温低盐性质的沿岸流为主,夏季受高温高盐性质的台湾暖流水影响,水团的转换使调查水域的营养盐、温度、盐度和透明度等发生变化,从而进一步影响到浮游动物的生态特征。
Based on the data collected in Jiaojiang inshore waters in April,July and November of 2010,the relationship between horizontal distribution and seasonal changes of zooplankton was discussed in this paper. The results showed that horizontal distribution of zooplankton had an obvious seasonal variation and zooplankton abundance peaked in spring （1 700.07 ind/m3）, and it was the second highest in summer （258.65 ind/m3）, the lowest in autumn （72.90 ind/m3）. Jiaojiang runoff and Zhejiang coastal current play an important role in zooplankton abundance as a result of the relevantly weak upwelling in spring and autumn. Obvious variation of the three seasonal dominant species in investigated waters can be observed, Calanus sinicus in spring, Calanus sinicus,Acartia pacifica,Euchaeta concinna and Sagitta nagae in summer and Sagitta enflata and Diphyes chamissonis in autumn are the main species that result in the seasonal changes of phytoplankton abundance. Survey results were compared with the same period of phytoplankton findings of zooplankton, and phytoplankton and zooplankton abundance high value area is not consistent with the nutrient salt and water masses of different seasons of investigation waters changes.
出处
《上海海洋大学学报》
CAS
CSCD
北大核心
2014年第1期131-138,共8页
Journal of Shanghai Ocean University
基金
国家自然科学基金项目(40776077)
国家重点基础研究发展计划(2010CB428705)
关键词
椒江口
浮游动物
群落结构
季节变化
Jiaojiang coastal water
zooplankton
community
seasonal variations
