Eta-shaped nail for coral and application of eta-shaped nail

Abstract

The invention provides an eta-shaped nail for coral and application of the eta-shaped nail, and belongs to the technical field of ecological artificial repair of coral reefs. The eta-shaped nail for the coral comprises a long foot, a short foot and a transition section; the two ends of the transition section are connected with the long foot and the short foot correspondingly to form an eta shape,and sharp head parts are arranged at the end, away from the transition section, of the short foot and the end, away from the transition section, of the long foot correspondingly. The eta-shaped nail for the coral is simple in structure and low in cost, is used for bottom sowing transplantation of the hermatypic coral, can effectively stabilize and fix the hermatypic coral transplanted on the coralreef bottoms or the reefs, tissue death of the coral due to rotational friction is reduced, the coral falling-off rate is decreased greatly, and the coral survival rate is increased significantly.

Description

technical field [0001] The invention belongs to the technical field of n-shaped nails for corals, and in particular relates to n-shaped nails for corals and applications thereof. Background technique [0002] Due to the rapid degradation of coral reef ecosystems worldwide, more than half of coral reefs are currently severely threatened. The main phenomenon of coral reef degradation is the reduction of the number of reef-building corals, resulting in the lack of basic functional organisms in the entire ecosystem, and the imbalance in the structure and function of the ecosystem. In order to restore the ecological structure of coral reefs, people began to adopt the method of coral transplantation for ecological restoration. By transplanting and bottom seeding reef-building corals into degraded coral reefs, promoting the number of reef-building corals in the reefs, thereby helping the coral reef ecosystem to restore its function. [0003] The coral transplanting methods curren...

AI Technical Summary

Problems solved by technology

The cutting method is to directly insert the coral fragments into the gaps, small holes, or place them on the surface of the coral reef. The coral fragments are not fixed and can only be stabilized by the growth of the coral's own skeleton and spread to the surrounding substrate. Under the influence of waves or currents Will roll and move, low survival rate, slow growth rate

There are also fishing lines or cable ties used to directly tie coral fragments to the residual branched coral skeletons on the coral reef for stabilization, but because the residual coral skeletons will become brittle and fractured under the action of drilling organisms and seawater erosion, tie them to The coral fragments that come to the door will also fall off with the fracture of the skeleton, resulting in increased mortality

At the same time, this method requires a large number of branched coral skeletons on the coral reef, which is often difficult to meet.

There is also a method of using underwater glue to adhere coral skeletons to the coral reef substrate, but the cost of the currently used underwater glue is too high to be used in large quantities, and can only be used in small-scale experiments and demonstrations

Some experiments use a single iron nail (the iron nail is a common iron nail, such as a T-shaped iron nail with a nail shaft and a nail cap) to be nailed into the bottom of the coral reef, and then the coral fragments are tied to the iron nail. This method can be used It is used on a large number of flat substrates on coral reefs, but the iron nails need to be nailed directly into the coral reefs with a hammer underwater, and divers are required to rotate the hammer underwater, which consumes a lot of energy and air, especially for long-term operations, which greatly increases Chances of diving sickness

At the same time, the study found that coral transplantation using the above-mentioned iron nail method will cause the death of coral fragments and reduce the survival rate of coral transplantation

[0004] The current coral transplantation methods and devices have obvious limitations and low efficiency. How to improve the efficiency of coral transplantation methods has become one of the key technical issues that need to be solved urgently for coral reef restoration.

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