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Method for repairing fishery resources in estuary sea area

A technology for fishery resources and sea areas, applied in fish farming, animal husbandry, applications, etc., can solve problems such as the decline and unresolved problems of fishery resources in sea areas, and achieve restoration of fishery resources in sea areas, reduce sedimentation, and improve ecological diversity. Effect

Inactive Publication Date: 2022-01-18
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this patent achieves the purpose of choosing a suitable sea area for movement at any time by hanging the oysters on a movable carrier, which does not and cannot solve the problem of the decline of fishery resources in sea areas

Method used

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  • Method for repairing fishery resources in estuary sea area
  • Method for repairing fishery resources in estuary sea area
  • Method for repairing fishery resources in estuary sea area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Restoration of fishery resources in the sea area of ​​the estuary of embodiment 1

[0037] 1. Select the estuary area to be repaired

[0038] The salinity range is preferably 10% to 25%, the sea area has less wind and waves, and the water temperature changes steadily throughout the year, the water quality is stable, and there is no industrial pollution in the sea area.

[0039] 2. Making floating raft hanging row

[0040] The floating raft type hanging row made by the method of the present invention is as figure 1shown. The floating raft-type hanging row uses bamboo poles as the main frame, and each hanging row is 5 meters long and 3 meters wide. When making, first combine 3 bamboo poles with a length of 5m into one bundle to make the long side of the hanging row, make a total of 5 bundles, and arrange each bundle at an interval of about 70cm; take 2 thicker bamboo poles with a length of 3m, and use Iron wires and ropes are respectively fixed to the two sections of ...

Embodiment 2

[0048] Example 2 Hanging row combined with fishery resources restoration investigation results of oyster seedlings

[0049] The present invention utilizes the method described in embodiment 1 to carry out fishery resource restoration in the estuary waters of Taishan City, Guangdong Province by using floating raft type hanging row in combination with oyster seedlings, and respectively compares the control area (without floating raft lifting oyster row) and floating raft The fishery resources in the hanging oyster row area were surveyed, and the survey was conducted again after a lapse of 2 months.

[0050] The present invention samples the water layers of the control area (sampling point is A0) and the breeding area (sampling points are A1, A2) through fishing methods such as purse seine, trawling net, gillnet, fishing cage, etc., and counts the species composition of the catch , total length, body length, weight and other parameters to classify fish ecological types. And the ...

Embodiment 3

[0081] Embodiment 3 The investigation result of the fishery resource restoration of hanging row combined with oyster shells

[0082] The present invention utilizes the method described in embodiment 1 to carry out fishery resource restoration in the estuary waters of Taishan City, Guangdong Province by using floating raft type hanging row combined with oyster shells, and respectively compares the control area (no floating raft lifting oyster row) and floating raft Fishery resources in hanging oyster row areas (only oyster shells, no live oysters) were investigated.

[0083] The survey method and calculation method used are the same as in Example 2.

[0084] Table 5 shows the fish abundance table of the sampling points repaired with oyster shells.

[0085] Table 5 Fish abundance table of sampling points

[0086]

[0087]

[0088] The fish biomass table of the sampling points repaired by using oyster shells is shown in Table 6.

[0089] Table 6 Fish biomass of sampling ...

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Abstract

The invention provides a method for repairing fishery resources in an estuary sea area. The method comprises the steps that a plurality of buoyant raft type hanging rows are arranged in a sea area to be repaired, a plurality of ropes are connected to the lower portions of the buoyant raft type hanging rows, and oyster shells or oyster seeds are strung on the ropes. According to the method, on one hand, a spatial heterogeneity three-dimensional biological structure can be provided for a sea area, habitats and shelters are provided for many important benthic invertebrates, fishes and planktonic crustacean, so that the ecological diversity of the sea area is improved, and the fishery resource quantity of the sea area is restored; and on the other hand, oyster breeding can be conducted, the advantages of protection and utilization are achieved, and practicability is high.

Description

technical field [0001] The invention belongs to the technical field of restoration of fishery resources. More specifically, it relates to a method for restoring fishery resources in estuary waters. Background technique [0002] Oysters are marine benthic animals that live in temperate estuarine waters where brackish and fresh waters meet. Fresh and live oysters can gather and grow in large numbers, forming large-scale oyster reefs. As a special marine habitat, oyster reefs have very important functions in biodiversity protection, water purification, maintenance of ecosystem structure and promotion of fishery production. In many estuary ecosystems, oyster reefs have very important ecological functions, mainly including three aspects: (1) water purification function; as filter-feeding benthic animals, oysters can effectively reduce suspended particulate matter, phytoplankton and Detritus, and can accumulate a large amount of heavy metal ions in its soft tissue, improve wate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/54A01K61/55A01K61/59A01K61/73A01K61/75A01K61/78A01K61/10
CPCA01K61/54A01K61/55A01K61/75A01K61/78A01K61/73A01K61/10A01K61/59Y02A40/81
Inventor 李桂峰易华东曾泽雨毕胜赖瀚李海洋
Owner SUN YAT SEN UNIV
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