Food web stability evaluation method based on stable isotope technology

A stable isotope and evaluation method technology, applied in the field of food web stability evaluation based on stable isotope technology, can solve problems such as difficult to understand nutritional relationship and huge workload, and achieve the effect of scientific reconstruction and collaborative repair

Pending Publication Date: 2021-09-07
MARINE BIOLOGY INST OF SHANDONG PROVINCE
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Problems solved by technology

However, the traditional research method of nutritional dynamics in marine food webs is the feeding habits analysis method, which uses the method of analyzing the population composition and quantity of the contents of the digestive tract of predators to determine the basic structure of the food web and the food relationship. Not only the workload is very huge, but also It is difficult to figure out the nutritional relationship between various organisms at different trophic levels

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  • Food web stability evaluation method based on stable isotope technology
  • Food web stability evaluation method based on stable isotope technology
  • Food web stability evaluation method based on stable isotope technology

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Embodiment 1

[0029] Taking the surrounding waters of Miao Island in Yantai City, Shandong Province as the experimental area, a fishery resource survey was conducted in the Miao Island Peninsula Ecological Breeding Area in November 2018. Using stable isotope technology, the main species of flat scorpion scorpion, Dataki six line fish and brown scorpion were investigated. A calamari performed a trophic niche assessment, including the following steps:

[0030] (1) Sample collection and processing

[0031] According to the "GB / T 12763.1-2007 Marine Survey Specification", samples of swimming organisms were collected from the ocean in the study area. The samples were mainly composed of fish, shrimp, crab and ginseng, the trunk muscles of fish, shrimp and sea cucumber were taken, and the big claw muscles of crabs were taken. The sample was dried in a drying oven at 60°C for 48 hours to constant weight, ground into a uniform powder with an agate mortar, wrapped in tin foil, and stored in a desicc...

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Abstract

The invention relates to the technical field of ecological evaluation, and in particular, relates to a food web stability evaluation method based on a stable isotope technology. The method comprises the steps: measuring and calculating [delta]13CTOC and [delta]15NTON values in a sample, and drawing a carbon and nitrogen stable isotope ratio two-dimensional point set of each population by respectively taking the [delta]13CTOC and [delta]15NTON values as horizontal and vertical coordinates to obtain five parameters, namely [delta]13C value variation (CR), [delta]15N value variation (NR), nutritional ecological niche area (TA), standard ellipse area (SEA) and nutritional ecological niche overlapping area (OA); and evaluating the stability of a food web and performing manual intervention according to an evaluation result. According to the method, the nutritional ecological niche of main populations in the food web in a sea area can be monitored and researched in real time, the ingestion competition among the populations can be evaluated, and a data support method for precise enhancement and releasing and fishery resource harvesting in a marine research area is provided, so that the purpose of refined ecological breeding of the marine industry is achieved, and the marine economic benefits are improved.

Description

technical field [0001] The invention relates to the technical field of ecological evaluation, in particular to a food web stability evaluation method based on stable isotope technology. Background technique [0002] At present, the evaluation of the effect of the marine environmental ecosystem or the ecosystem evaluation of the restored sea area still mostly uses underwater photography and fishing as means to estimate the dominance, diversity, and evenness of the population in the biome, which is not only low in efficiency but high in investment. , and the actual effect is not ideal, and the dynamic changes of biological communities in the marine ecosystem are not accurately grasped. Among them, the trophic level relationship is the most important connection between the members of the organisms in the community, the basis for the survival of the community, and the core of understanding the energy flow of the ecosystem. However, the traditional research method of nutritional...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62G06F17/11
CPCG01N27/62G06F17/11
Inventor 盖珊珊唐柳青丁刚刘洪军
Owner MARINE BIOLOGY INST OF SHANDONG PROVINCE
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