The populations are becoming so hard to find that fisheries are now catching the fish in estuaries, a place where the juveniles grow. There is also no ban on fishing them during certain seasons. This leads to the capture of pregnant females, and of juveniles. The population has declined so much that many fisheries have gone out of business. The reason I don’t think that the consumption from predators is why the population is declining so rapidly is the fact that these predators have been hunting these fish for hundreds of years.
Other researchers think some people were trying to breed Snakeheads as they bring a large amount of money in some areas. (Frankenfish.com). The Northern Snakehead is a major predator, as it has no enemies. It has the ability to wipe out populations of native fish. “Frankenfish” entire diet mostly contains other fish, as well as plants and insects.
Dr Euan Ritchie stated “When sharks were culled in Hawaii there was no long-term benefit because sharks attacks occurred immediately after”. Why then, waste billions of taxpayers’ money on a solution that has previously shown it does not work? In South Africa, again, according to statistics from the KwaZulu-Natal Shark Board, “less than 18 per cent of marine life caught on drum lines in South Africa in the 2011 to 2012 financial year have been great white or tiger sharks” with animals mentioned in the above paragraph contributing to the other 78%. A large scale cull would be highly redundant then as Australia would be no different from Hawaii and South Africa. In New South Wales and Queensland “there have been severe shark attacks on beaches that are protected by nets”, highlighting how wrongly this issue is being
Planning on visiting a cave?, well don’t get your hopes up on seeing one there in this age. Many scientists believe that the days of the salamandor lining the walls are over, due mostly to destruction and deterioration over time. Salamandors actually are in danger in pretty much any enviornment they choose to call home. The number of wetlands and forests is decreasing every year, in the last 100 years alone 54% of wetlands have been lost. Vernal pools would be the perfect fix for salamandors,
All throughout Africa the economy is slowly and rapidly by the effects of poaching. Poaching is decreasing the number of animals that roam the plains of Africa and also affecting the villages in the plains as well. The African fish hatcheries are some of the places that are economically impacted by poaching. Poaching is one of four exploitation factors that affect the fish hatcheries but poaching is one of the main problems in the system. The poaching over the years has greatly affects the yield of aquatic animals that the hatcheries have been receiving.
Two percent of the ocean has been overlooked by people ant it leaves ninety-eight percent of the ocean for the megladon can swim. This shark could be a very intelligent shark by possibly attacking its pray as fast as it can and head down the bottom of the big blue. The evidence has proven that there was a time this shark had lived because of the physical evidence shown by the teeth collected. The pictures clearly state that there is a mega shark out there and the eyewitnesses explained that a huge shark had been around in South Africa. There may come a time when this shark may make a mistake and show its self to the world with
But the salmon cannot pass the dams without fish passages. Though this is the only way the fish can travel past the dams, any water that does not go through the hydroelectric generator is seen as lost revenue for the electric company as well as surrounding industries. Overall, the dams hinder both migrations downstream for young fish, and upstream for adult fish. The young fish experience a mortality rate of 15-20% per dam and may pass multiple dams in their trip to the ocean (Safina, 1997). They can get held up behind the dams which keeps them from reaching the ocean as soon as they should.
There are many people that are always ill because of not getting purified water like us especially in Africa recent studies show that only forty six percent of African people get clean water. By not drinking clean water people can get many problems that lead to death like diarrhea, animals are also a being victim to contaminated water with our fault. Water purifying means that removing any unsafe substance from the specific type of water. Water contamination is caused by many ways but the most important cause is us, most of the contamination is caused by poor sewage system that may lead to chemical contamination and this may contaminate streams and rivers that people drink. To purify polluted water we may use different type of methods according to the pollutants entered in the water.
The inhabitants cut down the trees to build canoes and spiritual statues at a sustainable rate but, with the rat population at twenty million on a sixteen mile long island, the trees could not reproduce effectively. In turn, the tree loss prevented the construction of canoes for fishing so the natives hunted down the entire land bird population and begun the struggle for survival. The introduction of an invasive species, alone, caused the indigenous of Easter Island to face starvation. Today it isn’t just an island of people that face extinction; it is the entire world population that’s nearing its downfall and, we are struggling with a myriad of factors contributing to environmental degradation. The poison from the dart frog of the Peruvian rainforest contains a chemical that is the basis for a compound that is vital for the process of transplanting human organs.
Latest technological advances have increased the threat to the marine animal, especially for turtles. It's believed that many species of turtle already got extinct and seven species of turtle are in the verge of extinction. Olive Ridley is one among the seven breeds that are in the verge of extinction. Features of Olive Ridley Olive Ridley turtles have been around a very long time, more than 100,000,000 years. Olive Ridley sea turtles, Lepidochelys olivacea are small, hard-shelled marine turtles, one of the two species of the genus Lepidochelys, and a member of the Family Cheloniidae.