摘要
根据2015年11月(秋季)、2016年5月(春季)在舟山近岸海域开展的渔业资源调查中所获得的虾类数据,用渔获量作为虾类资源分布的数量指标,对该海域虾类的种类组成、数量时空分布、种群变动趋势以及与环境因子的关系等进行了研究。研究认为:(1)调查海域共鉴定出虾类21种,隶属于8科15属;数量分布春秋季变化明显,总体而言秋季多于春季,调查海域北部多于南部。(2)不同季节优势种与常见种差异较大。与以往调查相比,小型虾类取代大型虾类成为优势种。(3)底层温度和盐度对舟山近岸海域虾类渔获量分布无明显影响,但按深度分类分析,虾类渔获量随水深变化呈现差异。(4)ABC曲线显示,渔获量曲线和丰度曲线交错,表明调查海域虾类群落受人类影响强烈,处于严重干扰状态,生态敏感度高。因此,舟山近岸海域虾类生物资源受人类活动影响强烈,群落结构发生明显演替,主要渔获呈现小型化、低产化趋势。
According to the data of shrimp obtained from the fishery resources survey conducted in the coastal waters of Zhoushan in November 2015 （autumn） and in May 2016 （spring）, the catch was used as the quantitative index of the distribution of shrimp resources.The composition of shrimp species,the temporal and spatial distribution of quantity, the alteration trend of population and the relationship with the environmental factors were studied in this sea area.The research results： （1） 21 species of shrimp were identified in the investigation sea area, belonging to 8 families and 15 genera.The quantity distribution was obvious in spring and autumn, in general,the number in Autumn was greater than that in Spring.（2） There were significant differences between dominant species and common species in different seasons.Compared with the previous survey, small shrimp replaced large shrimp and became dominant species.（3） The temperature at the bottom and salinity had no significant effect on the distribution of shrimp catches in Zhoushan coastal waters.However, according to the analysis of depth classification, shrimp catches showed different variation with water depth.（4） The ABC curve shows that the catch curve and the abundance curve were staggered, indicating that the shrimp community in the survey area was strongly affected by human beings, and was in serious disturbance state, and the ecological sensitivity was high.Therefore, the shrimp biological resources in Zhoushan coastal waters were strongly affected by human activities and the community structure was in obvious succession.The main catch displayed miniaturization and low production trend.
作者
张平
俞存根
水玉跃
翁良才
丁建伟
邓小艳
许永久
郑基
谢旭
苗露
ZHANG Ping YU Cungen SHUI Yuyue WENG Liangcai DING Jianwei DENG Xiaoyan XU Yongjiu ZHENG Ji XIE Xu MIAO Lu(School of Fisheries, Zhejiang Ocean University, Zhoushan 316022, Zhejiang, China Zhoushan Bureau of Oceanology and Fishery, Zhoushan 316000, Zhejiang , China)
出处
《上海海洋大学学报》
CAS
CSCD
北大核心
2017年第4期580-587,共8页
Journal of Shanghai Ocean University
基金
国家自然科学基金(31270527)
舟山市海洋与渔业局委托项目
关键词
虾类
种类组成
数量分布
环境因子
ABC曲线
舟山近岸海域
shrimp
species composition
quantitative distribution
environmental factors
ABC curve
Zhoushan coastal waters
