乐生活I actually have my own opinion on whether wild harvesting will have a great impact on the population of organisms.
_My point of view:
First of all, fish in open waters are happy and free, and the population reduction caused by wild mining is recoverable and affordable. The stability of the environment is what we really need to worry about. If we really can’t get over it, we’ll be done after harvesting trees in the wild.
But for some living environments which are already narrow, it is better to advocate moderate wild harvesting, recognize the harmfulness of commercial fishing, and support artificial breeding. And it’s better not to be too purposeful. (For example, the preferred regional species among native enthusiasts: shrimp, tiger, mackerel)
_Give a theory
The principle of competitive exclusion points out that two species cannot occupy the same niche. When two species compete for the same habitat and resources, one species will be severely suppressed, and the final result is that one species will eliminate the other species. Wild mining in open waters does not do much harm at all, but it is much more serious in enclosed narrow environments.
Examples of_Fish
I have only experienced one kind, that is, Xiaotaohong was caught. Generally speaking, the harm of purposeful fishing is much greater than that of purposeless fishing.
In the origin of Xiaotaohong, wheat spider fish and high-body Mandarin mackerel, which originally occupied the most dominant niche in other waters, were greatly suppressed because of the predatory advantage of Xiaotaohong. It’s amazing to see a situation in which spider fish and tall sole are severely depressed. I once thought that under such a great niche advantage, little peach would change even if it was caught any more, but in fact we all neglected the harmfulness of commercial fishing or purposeful wild harvesting. Characteristic
Of course, those fishmongers who had teared with me were still sending photos everyday to explain how unchanged the environment was, but it was no use cheating themselves. They themselves had also felt the gradual increase in height, and the balance of niche was gradually pressing on Xiaotaohong.
Commercial and highly purposeful fishing activities can do great harm to fish that differ in appearance due to gender and growth time. For example, the difference in appearance color between male and female is huge in small peach red or in most of the subfamilies of mackerel. Therefore, selective selection will inevitably lead to the unbalance of the original harmonious number of male and female. In addition, the seemingly reasonable and humane way of choosing the big to the small and the beautiful to the ugly is to select and breed the ugly artificially. You leave the ugly and the small behind without using the beautiful hands to breed and conserve. I think the damage is not as bad as the destruction of the country, but it is also destructive.
In fact, the current situation is that a large number of "ugly" breeding and single-handed fishing, resulting in a sudden pink can not suppress the tall Mandarin squid and wheat ears, and now many of the original 19-year-old watershed has become 46-year-old, really scary.
Of course, Xiao Taohong is also an extremely rare example, the quantity is large and easy to salvage, but also good-looking. In the past experience, four or five good-looking Mandarin squid will be caught in one cage, right?
_Supplement one
Some people say that there are a lot of fish catching every time. Why don’t you say that?
It has its own characteristics. First of all, it is a very competitive predator in the open water area, with a large number. In addition to the beautiful pictures you see, more of it is eaten by us. Secondly, the life span of the Spanish mackerel is very short. For the species that are dying all the time, you don’t eat it or catch it. Most of them can’t survive the winter once they breed. The spawning method also allows it to have enough offspring, so you can think of it as salmon preyed by brown bears. The spawning salmon floats all over the river beach and bears can’t eat it, only peel off the highest calorie fish skin to save stomach space.
The story of the crab is also interesting.
The species corresponding to moderate wild harvesting and environmental protection were clarified.
Nanhai Creek crab and waist crab are widely distributed in Guangzhou and Guangdong. Last time I went to XXX park, it was a park with high artificiality. My friend pointed to the Qingshui River on both sides of the pontoon bridge and told me that these rivers used to be crabs with waists, but more people came and more crabs were taken away. Then I asked Nanhai Creek Crab if it was the same. He said you were silly, because the crab could not dig holes. It was always floating on the surface that people could easily grab it. As for the crab caves in the South China Sea, they are dense everywhere, but friends say that tourists always only know that there are crabs in the water. Who can think that the crabs in the caves are more beautiful?
I don’t like to dig holes, so the girdled crab that was most witnessed by fishermen was swept away. This is what was said before that moderate wild harvesting must be promoted.
_But the South China Sea crab, which is more difficult to catch, is also facing its own problems.
I don’t know if the demand for flood control has come up, or the fine sand needed for the decoration of buildings has arrived. White bags like sand bags can be seen everywhere in XXX park. The damaged bags were washed away by the rain, and the fine sand slowly flowed into the stream and was taken to the shore. Although I thought at first that there should be no big problem, my friend said that the life of South China Sea Creek Crab is getting worse and worse. Because the fine sand slowly mixes with the original yellow mud, which reduces the clay’s viscosity, the area where crabs can dig holes in the South China Sea becomes more and more limited. Many of the original crabs have disappeared and the crabs have moved away.
Do you say it’s still a problem for wildcatchers? This is not the problem of protecting the environment.
In a word, any wild harvesting should be moderate. In many cases, deeper consequences should be considered. It is also hoped that China’s native fish industry will be able to make good money and become bigger and stronger, but it is better to gradually embark on the road of artificial breeding and artificial breeding.
Taking the road of sustainable development is falling
