Risk quantitative evaluation method for ecological influence of outbreak jellyfish on marine nekton

Abstract

The invention relates to the related fields of marine animal ecology, marine population ecology, marine community ecology, marine environment ecology and the like, and establishes a risk quantitative evaluation method for the ecological influence of the quantity change of outbreak jellyfish population on marine nekton. The method comprises six index systems: (I) an influence index IIs of the outbreak jellyfish on the variety diversity of the marine swimming animals; (II) an influence index IIH'of the outbreak jellyfish on the diversity of the marine nekton Shannon-Wiener; (III) the dominance degree influence index IID of the outbreak jellyfish on the marine nekton Simpson; (IV) an influence index IIE of the outbreak jellyfish on the uniformity of the ocean nekton Pielou; (V) the influence index IIR of the outbreak jellyfish on the richness of the marine swimming animal Margalalf; and (VI) an influence index IIcs of the outbreak jellyfish on the stability of the marine nekton community. The ecological influence EIIjn of the outbreak jellyfish on the marine nekton comprehensively considers the above six indexes, and the risk of the ecological influence of the outbreak jellyfish population abnormal change on the marine nekton can be simply, conveniently and accurately quantitatively evaluated. The method fills the blank of no risk quantitative evaluation method for the ecological influence of the outbreak jellyfish on the marine nekton, and has the characteristics of convenience and quickness in operation and high feasibility.

Description

technical field [0001] The invention relates to related fields such as marine animal ecology, marine animal population ecology, marine animal community ecology, and marine environmental ecology, and establishes a risk quantitative assessment method for the ecological impact of jellyfish outbreaks on marine swimming animals. 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 safety of the ecological environment, but also causes a huge disaster to my country's mari...

AI Technical Summary

Problems solved by technology

At present, there is no research on the risk assessment of the impact of jellyfish outbreaks on the ecology of marine swimming animals. Therefore, it is urgent to establish a simple, convenient, easy-to-implement and more accurate quantitative index system for the impact of jellyfish population changes on the diversity of marine swimming animals. To assess and measure t