According to world wildlife organisation, overfishing occurs when more fish are caught than the population can replace through natural reproduction. Gathering as many fish as possible may seem like a profitable practice, but overfishing has serious consequences. The results may not only affect the balance of life in the oceans, but also the social and economic well-being of the coastal communities who depend on fish for their way of life.
According to the research world wildlife organisation, 1.6% of the world’s oceans have been declared as marine protected areas (MPAS), and 90% of existing MPAS are open to fishing. MPAS are important because they protect habitats such as coral reefs from destructive fishing practices. No-take zones allow
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Therefore, the overfishing crisis is illegal, unregulated, and unreported fishing. The illegal fishing occurs across all types of fisheries, within national and international waters, and small scales to large industrialized operations.
The impact of overfishing can bring the economic loss, marine life imbalance, and decreased food security. In term of economic loss, fishing is integral to economies around the world. Hence, overfishing threatens coastal nations down to the local level, devastating communities whose dominant sources of labor and revenue hinges on healthy, plentiful stocks of fish.
Also, marine life imbalance may affect the targeted fishing of top predators such as billfish, sharks and tuna that eventually disturbs marine communities. In fact, it is causing increased abundance of smaller marine animals at the bottom of the food chain. This in turn has impacts on the rest of the marine ecosystem, such as the increased growth of algae and threats to coral reef health. Overfishing is also closely tied to by catch, another serious marine threat that causes the needless loss of billions of fish, along with marine turtles and
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Since, the increasing popularity of scuba diving has put more strain on coral reefs around the world. In fact, specially the driver work underwater photographers and beginners sometime make contact with fragile corals, breaking them or damaging them and leaving them susceptible to bacterial attack and disease. Eventhough they are not colleting illegal of coral reef still that they did not be responsibility to what they have done with coral reef. Occasionally, all the souvenirs are made from marine life for instances polished shells, clams and nautilus shells, jewelry made from shell or tortoise shell, pictures with dried seahorses, ashtrays made from clams (Teresa Zubi, 2015).
Therefore, the impact of overfishing and illegal collecting of coral may destroyed the social and economic well-being of the coastal communities who depend on fish for their way of life. Beside, it is also direct overexploitation of fish, intertebrates, and algae for food and the aquarium trade, removal of a species or group of species impacting multiple trophic levels, bycatch and mortality of nontarget species, and change from coral to algal dominance due to reduction in herbivores (Reef Resilience Organisation,
Andy Dehart, Discovery Channel Shark Advisor, spoke about the North Carolina shark over fishing problem. The shark populations on the East Coast were extremely over-fished which lead to the over population of sting rays, a main food-stock for sharks. The stingrays in turn decimated the shellfish populations on the East Coast, leading to calm and shellfish shortages. This shows that sharks are necessary for every eco-system and their destruction affects us in more ways then we can imagine. Sharks are very at-risk for over-fishing because they take a long time to reach the stage where they can reproduce and in general only have a few pups when they give birth.
Their activities also disrupt the work of fish farmers by destroying large number or
1. It is a scientific fact that biodiversity is greatest near coral reefs and estuaries. But because of human influence coral reefs around the world are dying. Human coastal development, pollution, ocean warming, and ocean acidification are all things that threaten them. The World Research Institute estimated that about ¾ of the worlds shallow reefs are threatened by climate change, pollution, and overfishing.
To begin with, we must have some history on fishing worldwide, but most of the entire North American continent, in the Atlantic. Ocean fishes have been shot by humans for hundreds of years. Due to overfishing, they are beyond their maximum sustainable yields. Scientists are not sure if the rising water temperatures are responsible for poor egg hatching or UV radiation from reduced ozone, but bottom trawling has had the worst effect. As one after another species of fish have disappeared, commercial fishermen have turned to other species.
Calculations for tourism for the year of 2015 are unavailable at this time, but for the year of 2014, the reef received a total of 2.19 million visitors. It is a well – known piece of information that there is a global climate change going on where there is a rise in CO2 in the atmosphere due to higher emissions of fossil fuel and more deforestation occurring. The ocean then absorbs more of this CO2, which in turn raises the acidity, which in turn creates a poor environment for the coral to live and recover from bleaching that has already occurred. This change in acidity also affects the calcium carbonate that corals use to build themselves. (“Climate Hot Map- Global Warming Effects Around the
There are several causes of overfishing, such as fishing vessel in large number in one area, using a mesh net in a small size and high demand of fish. One example of overfishing was happened in Canada. Since 17th century, local fisherman in Canada has caught cod fish using a simple fishing gear. Simple fishing gear makes limited the volume of their harvest, limited the size and the age of fish. Because the demand of cod fish was in a high level, the industries were also decided to run the infiltrations in order to overcome that.
“The Disadvantages of Artificial Coral Reefs” from Pets on Mom.me,
Sharks have been apex predators in the ocean for millions of years, however, the populations of sharks have been at risk for years as a result of many different factors. The impact of overfishing on shark populations has risen into the public eye over the recent years due to several documentaries and movies that have been released recently. Sharks are particularly vulnerable to over-exploitation due to their K-selected life strategy, having slow growth rates, long life spans and due to them reaching sexual maturity at relatively late age compared to that of other marine organisms (Stevens et al., 2000). Fisherman fish for sharks in order to get their fins, which is used to make shark fin soup (a delicacy in South-East Asia).
overfishing will destroy ecosystems by eliminating certain fish that the ecosystem strives from taking away a vital asset will essentially send the system crumbling down. “According to marine ecologists, unsustainable fishing is the greatest threat to ocean ecosystems. The practice destroys the physical environments of marine life, and distorts the entire food chain in the oceans. If the food chain breaks, the consequences will ripple up and down to all the living organisms that are in the chain” (eschooltoday). This kind of behavior can lead to the extinction of certain marine animals.
Around 10 percent of the world’s total fish species can be found just within the Reef. It is extremely ancient, as much as twenty million years. But nowadays, the Reef is an exceedingly popular tourist destination with over two million visitors each year. (Change)
- overfishing - why do we need to care about overfishing? Ecological extinction caused by overfishing precedes all other pervasive human disturbance to coastal ecosystems, including pollution, degradation of water quality, and anthropogenic climate change. Why does overfishing make a difference? Overfishing imperils sea biological systems and the billions of individuals who depend on fish as a key wellspring of protein.
In this article the author is expressing the idea that fishing in the ocean is going to wipe out the ocean’s fisheries. He expresses that we haven’t managed how much we are fishing and that eventually there will be no more species to fish. He refers to fishing as “hunting in the ocean” which shows how deeply he feels we shouldn’t overfish. He also brings up the topic that fish farming is harmful to our environment. The author believes that, “if we recognize that domestication of the ocean is starting to happen, we can craft a research agenda to mitigate the problems and maintain both economic and ecological sustainability.”
1. If overfishing continues hundreds of thousands of fish farmers and medium scale fisheries, often very poor, that depend on aquaculture and fishing, will be out of work. According to the Food and Agriculture
Sidney J. Holt, the founder of fisheries science, writes about how Japan claimed that “world fish catches have been declining, at least in part because fish and other marine living resources of interest to humans are being consumed in vast quantities by whales, which are supposedly increasing fast under protection” (Holt). Holt argues that this claim
Recent concerns that jellyfish populations are increasing have stimulated speculation about possible causes including climate change, eutrophication, over fishing and invasions (Jennifer E, 2007). The moon jellyfish has become a bit of a nuisance to many different fishing companies, they diminish the size of commercially important fish larvae by either direct predation or due to the result of food competition (Dawson and Jacobs 2001). Reports of human problems with jellyfish have increased and have captured public attention. Jellyfish and jelly-like sea creatures come in an immensely diverse range of forms. If a jellyfish is cut in two, the pieces of the jellyfish can regenerate and create two new organisms.