Remote investigation equipment and investigation method for macrobenthos in marine ranch

Abstract

The invention relates to the technical field of marine fishery resource investigation, in particular to a remote investigation device and method for macrobenthos in a marine ranch. A plurality of gridlines are arranged on an organic glass sealing cover to form a plurality of irradiation grid areas, and under the action of an annular lamp tube, a plurality of grid projection areas are correspondingly formed on the bottom face of an underwater remote video facility support. Shooting is carried out through an underwater remote video camera, underwater remote video images of investigation pointsare analyzed through a video information remote receiving PC, and the variety name and number of the macrobenthos in the marine ranch in each grid projection area are observed and recorded correspondingly, so that the problem of low investigation efficiency in the prior art is solved; and meanwhile, according to the remote investigation device and method for the macrobenthos in the marine ranch, diving sampling by a diver is not needed so that the investigation work cost of the macrobenthos in the marine ranch can be greatly reduced, and the fine degree of investigation work is also improved.

Description

technical field [0001] The invention relates to the technical field of marine fishery resources survey, in particular to a remote survey device and survey method for large-scale benthic organisms in marine pastures. Background technique [0002] Marine ranching is a new marine fishery production model that combines the functions of environmental protection, resource conservation and sustainable fishery output, and has been valued and applied by more and more countries. At present, my country has approved the construction of 5 batches of 110 national-level marine ranch demonstration areas, with a total sea area of ​​200,000 hectares. Large marine benthic organisms are important fishery resources in marine ranching and also an important part of marine biological resources. The macrobenthic animals in my country's marine pastures mainly include sea cucumbers, abalones, lobsters, sea urchins, conchs and scallops. [0003] The current investigation method of marine benthic orga...

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Problems solved by technology

[0007] The object of the present invention is: in order to solve the low investigation efficiency caused by diving sampling by divers in the prior art, the high cost of investigation work, and the difficulty in detailed investigation of the distribution pattern of indicators such as the species, quantity, and size specifications of large-scale benthic organisms in marine pastures on the seabed Problem, the present invention provides a remote survey equipment and method for large-scale benthic organisms in marine pastures. It mainly uses underwater remote video cameras to shoot images of the distribution of benthic organisms on the seabed, and identifies, measures and records species of benthic organisms on the seabed, Quantity, size, specification, and distribution pattern, complete the survey of macrobenthic organisms in marine pastures, improve the current technical level of macrobenthos surveys in marine pastures, improve the efficiency of macrobenthic investigations in marine pastures, and strengthen the supervision of macrobenthos resources in marine pastures Level

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