For all their evolutionary success and apparent menace, sharks are incredibly fragile, unable to withstand the increased pressures forced on them by the voracious world fishing industries. The removal of important predators can generate a cascading effect on the subsequent trophic levels. No one would ever get away with it. Whales shift iron around the ocean. Once kings of natural selection, sharks are now facing extinction due to finning. In addition, the removal of the scallops likely had an effect on water quality as they were no longer there to perform their function of filtering and cleaning the water. They became fearless top hunters through the evolution of supremely-adapted senses and physiology.
The economic value of sharks to local communities gained via ecotourism far outweighs the relatively modest and very short-lived economic gain of killing sharks. Why travel halfway around the world? Shark sanctuaries — where they are protected from being fished - have been declared throughout the waters of a number of countries around the world. Because space is limited on fishing vessels and shark bodies are bulky and not considered as valuable, fishermen often catch the sharks, saw off their fins and toss the sharks back into the water. In Bermuda and the Indian Ocean, where shark populations have declined, increasing populations of sea turtles are causing entire seagrass beds to virtually disappear. For this reason, the prospect of a food chain minus its apex predators may mean the end of the line for many more species.
The methods used for capturing this rare species are wasteful and cruel, and their decline is presenting… year there are hundreds of sharks dying in the ocean simply because of a soup? The fins from sharks are sliced off and the remaining body is thrown back into the ocean. Directly or indirectly they regulate the natural balance of these ecosystems, at all levels, and so are an integral part of them. Some shark scientists believe that this intimidation factor may actually have more of an impact on the ecosystem than what sharks eat. Not a soup that makes you feel or look any younger, nor does it cure a sickness, but because of a delicacy. Ecologists have long predicted that the demise of top predators could trigger destructive consequences. Sheppard 1995 2 — Sheppard, C. Without sharks -- from bottom feeders all the way up to Great Whites -- the balance of the ocean's food chain is in danger.
Finning is responsible for the death of between every year. Canadian Journal of Fisheries and Aquatic Sciences 61: 466-475. The rapid reduction of sharks is disrupting the ocean's equilibrium, according to Peter Knights, director of WildAid International. In contrast, sampling by Peterson and co-author Sean Powers in recent years--after the cownose ray population explosion--showed that the migrating rays consumed nearly all adult bay scallops in the area, except those protected inside fences that the researchers had put up to keep the rays out. Difficulty in getting the soup decreases demand, which decreases the selling price and makes finning less attractive of an option to fishermen. The fins are added just for texture and novelty.
Every year human beings kill over 102 million sharks while less than 10 people are killed by sharks, yet we call them bloody killers Fairclough 1. Researching such effects, however, has been a challenge. Many people are not aware of the significance of shark finning. Octopi feed on spiny lobsters, so lobsters crashed, and fishermen were put out of work. The rays, which can grow to be more than four feet across, eat large quantities of bivalves, including bay scallops, oysters, soft-shell and hard clams, in the bays and estuaries they frequent during summer and migrate through during fall and spring. Every year human beings kill over 102 million sharks while less than 10 people are killed by sharks, yet we call them bloody killers Fairclough 1.
Heiman, Chris Perle, Kevin Weng, Robert Dunbar, Jan Witting Ongoing Collapse of Coral-Reef Shark Populations Current Biology 16, 2314—2319, December 5, 2006, William D. Msc thesis, Nicholas School of the Environment and Earth Sciences of Duke University, Durham, North Carolina. The practical results of this conservation effort… only time will tell. By working in Shark Bay we can understand the role of sharks and what might happen to Shark Bay and its seagrass if tiger sharks were to disappear. Not only will numbers of these large, beautiful and enigmatic creatures increase, but the amount of carbon dioxide entering the oceans and ultimately the atmosphere will also be reduced. Shark fin soup can be expensive.
Baselines and Degradation of Coral Reefs in the Northern Line Islands. A shark is captured, and their fins are chopped off. Take one element of this fine balance, and all the others will break down. Governments and environmental organizations… do has ripple effects in the world. Source: High apex predator biomass on remote Pacific Islands. The socio-economic value of the shark-diving industry in Fiji. Knights says it comes down to economics.
Since most commercially caught fish are predators, fishing and shark finning are resulting in a rapidly decreasing number of predators in the marine ecosystem. · Top predators also create food for scavengers as well as being scavengers themselves. Some shark researchers believe that the intimidation factor caused by sharks may actually have more of an impact on the ecosystem than what sharks actually eat. Anecdotes and the shifting baseline syndrome of fisheries. Removing sharks from marine ecosystems has been demonstrated to have detrimental effects on marine ecosystems.
Allowing numbers of predatory fish, sharks, whales and other marine animals to increase would likely lead to a decrease from current leveals of carbon production in the ocean. Several studies foresee that the majority of the ocean will be occupied by little more than a combination of and. · Another way they help maintain the structure of their ecosystem is through intimidation. The meat, on the other hand, is far less valuable, so fishermen toss it overboard to save space for more fins. Eating shark meat , in particular,.