Device for trapping and collecting zooplankton at base layer of coral reef area

Abstract

The invention discloses a device for trapping and collecting zooplankton at a base layer of a coral reef area. The device comprises an upper net bag and a lower net bag, the lower net bag is connectedwith a collecting bottle, a bottle lid is arranged at the bottom of the collecting bottle, and the upper net bag comprises a frame and a netting covering the frame; a collecting port is formed in thenetting, the lower net bag is a non-bracket net bag, and is in seamless joint with the netting of the upper net bag to form an entire net bag, slipknots are arranged at the four corners of the frame,and anchors are connected to the slipknots through strings. The device is placed in the coral reef area, a netting gear is opened and closed through a zipper to collect samples, and the collecting bottle at the bottom of the lower net bag is utilized for collecting the samples. Sufficient zooplankton samples at the base layer of the coral reef are obtained at a special target duration according to research needs; meanwhile, the purity and biomass of the zooplankton at the base layer in the collected samples are increased, the pollution of bottom mud and zooplankton is reduced, the separationtime is shortened, and further identification counting and subsequent analysis of the zooplankton samples at the base layer are facilitated.

Description

technical field [0001] The invention relates to a device for trapping and collecting bottom zooplankton in a coral reef area, which traps and collects bottom zooplankton by using a special net for trapping bottom zooplankton. Background technique [0002] The coral reef ecosystem is one of the marine ecosystems with extremely high biodiversity and primary productivity, providing an excellent habitat and food resources for a variety of organisms. The abundant benthic zooplankton resources in the coral reef ecosystem play an important role in the material circulation and energy transfer of the coral reef ecosystem. As secondary consumers, small demersal zooplankton are the main transmitters of primary producers to the upper trophic level. Their feeding selectivity to different foods determines the efficiency and scale of primary production upward transmission to a certain extent. The basic production processes of the ecosystem play a key role. At the same time, small demersa...

AI Technical Summary

Problems solved by technology

Due to limitations in the application of traditional sampling methods in complex coral reef ecosystems, sufficient samples of pure demersal zooplankton could not be collected

Therefore, the species composition, life rhythm, and feeding situation of demersal zooplankton in the coral reef ecosystem, especially the bottom-swimming small demersal zooplankton, are still unclear, and their status and function in the ecosystem are still unclear, which is not conducive to the interpretation of small demersal zooplankton Ecological functions of animals in coral reef ecosystems and assessment of coral reef ecosystem health and function

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