东海带鱼保护区鱼类群落结构及与环境变量的关系

发布时间：2023-06-03 22:16

　　带鱼保护区位于中国东海,该保护区具有较高的生产力和丰富的渔业资源。在过去的四十年里,该海域的渔业资源在高强度的捕捞压力下遭到了过度开发,导致了不同程度的生态环境变动和海洋生物群落改变。随着科技发展,网具效率提高、渔船数量和大功率渔船增加,渔业资源的捕捞压力不断增长。全球渔业资源衰退的情况下,中国等大部分国家针对渔业资源保护,出台相关政策,例如控制捕捞量和捕捞努力量等。本研究于2012²016年春、秋季节,通过利用底拖网对带鱼保护区的渔业资源和环境因子进行了共10个航次的调查,结合以往关于东海调查的历史数据,对该海域的鱼类种类组成、鱼类群落结构的时空分布、资源动态、生物多样性、9种主要渔获种类的生物学特性及与环境因子的关系进行了研究。结果显示:2012²016年10个航次的渔业资源调查共采集到鱼类188种,包括软骨鱼类2种和硬骨鱼类186种,隶属72科17目。其中鲈形目种类最多,有78种,其次为鲽形目(27种)、鳗鲡目(16种)、鲀形目(14种)、鲉形目(12种)和鲱形目(11种),均超过10种,剩下11目的种类较少,均少于10种。该海域渔业资...

【文章页数】：135 页

【学位级别】：博士

【文章目录】：
Abstract 摘要 Acronyms and abbreviations Chapter1:Research progress in the hairtail protected Area(East China Sea)
1.1 Geographic position,the range and time of the Hairtail Protected Area
1.2 Physical features in the ECS
    1.2.1 Geography
    1.2.2 Physiography
    1.2.3 Climate
    1.2.4 Hydrographic characteristics
1.3 The main species of the Protection Area(HPA)
1.4.Ecology,Exploitation of fish stocks in the ECS
    1.4.1 Ecological and environmental impact of the East China Sea
    1.4.2 History of the marine fishery in China
1.5 The main research contents,the purpose of this study and innovation Chapter2:Fish fauna and spatial- temporal variation in the Hairtail Protected Area
2.1 Materials and Methods
    2.1.1 Study area and data collection
    2.1.2 Statistical analysis
2.2 Results
    2.2.1 Species composition
    2.2.2 Diversity indices of the fish community
    2.2.3 Spatial-temporal distribution of abundance and biomass in the HPA
2.3 Discussion
    2.3.1 Seasonal changes of species composition and spatial-temporaldistribution
    2.3.2 Seasonal changes of fish community diversity indices Chapter3:Biological characteristics of major fish species in the Hairtail protected area
3.1 Materials and Methods
    3.1.1 Data analysis
3.2 Changes in dominant species between seasons and years in the HairtailProtectedArea
    3.2.1 Abundance dynamics of dominant species spring
    3.2.2.Abundance dynamics of dominant species autumn
3.3 Abundance-Biomass comparison(ABC curves)
3.4 Length-weight relationships of fifteen main fish species from the hairtailprotectedarea
3.5 Population parameters of major fish species along the Hairtail Protected Area..
3.6 Discussion
    3.6.1 Changes in community stability
    3.6.2 Changes of biological characteristics and Length-weight relationshipsof 15 main dominant species of fishery
    3.6.3 Growth and mortality rates
    3.6.4 Seasonal changes of dominant species Chapter4:Environmental variables related to the fish community in the hairtailprotectedarea
4.1 Materials and Methods
    4.1.1 Data analysis
4.2 Main physical and chemical parameters and their variability
4.3 Environmental variations in the HPA stations
4.4 Relationships between fish species and environmental variables
4.5 Discussion Chapter5:Strategies or suggestions to improve Hairtail protected area management
5.1 Administrative framework to establish a marine protected area
5.2 China’s approach to fisheries management
5.3 Strategies for conservation of fisheries resources
    5.3.1 Strategy to create a network of Marine Protected Areas(for example EastChinaSea)
    5.3.2 Strategy on the zoning of marine protected areas
    5.3.3 Involvement of the local communities and fishermen
    5.3.4 Prohibition of certain fishing gears that degrade habitat
    5.3.5 Restoration/Mitigation Efforts
    5.3.6 Increase public awareness
    5.3.7 Fight against pollution and climate change in the oceans References Acknowledgements Annexes Publication and Submission papers



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