Quantitative evaluation method for influence of outbreak jellyfish population fluctuation on fishery resource risk

Abstract

The invention relates to the related fields of marine zoology, fishery resource science, marine animal ecology, aquatic animal protection science, fishery resource investigation and evaluation, marine environment ecology and the like, and establishes a quantitative evaluation method for influence of outbreak jellyfish population fluctuation on fishery resource risk. Namely, an index-competitive dominance index CAI representing the abnormal fluctuation intensity of the outbreak jellyfish population is introduced. According to the index, quantitative evaluation is carried out on fishery resource risk influence by evaluating the competitive dominance degree of the outbreak jellyfish population in the fishery resource community. The method fills up the blank of a quantitative evaluation method for the risk influence degree of the fishery resources caused by abnormal fluctuation of the outbreak jellyfish population, and has the characteristics of convenience and rapidness in operation and high feasibility.

Description

technical field [0001] The present invention relates to related fields such as marine zoology, fishery resource science, marine animal ecology, aquatic animal protection, fishery resource investigation and evaluation, marine environmental ecology, etc., and establishes a risk assessment method for the impact of abnormal jellyfish population fluctuations on fishery resources. Quantitative evaluation methods. Background technique [0002] In recent years, the number of jellyfish in the world's oceans has been increasing, and large-scale outbreaks of jellyfish have occurred in many sea areas. my country's coastal waters are the "severe disaster area" for large-scale jellyfish outbreaks in the world's seas. The Bohai Sea, the Yellow Sea, and the East China Sea have successive outbreaks of jellyfish populations represented by sand jellyfish and moon jellyfish. The jellyfish outbreak not only has an important impact on the stability of my country's offshore ecosystem and the safe...

AI Technical Summary

Problems solved by technology

[0003] At present, there is no research on the quantitative assessment method of the impact of abnormal jellyfish population fluctuations on fishery resources. Therefore, it is urgent to establish a simple, convenient, easy-to-implement and more accurate risk quantification index, in order to deeply analyze the outbreak of jellyfish in my country's coastal waters. The impact on fishery resources, targeted monitoring of jellyfish outbreaks, scientific formulation of marine jellyfish outbreak warning and forecast levels, and formulation of effective prevention and control countermeasures provide scientific basis and technical support

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