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Impact of human overfishing on coral reef ecosystems
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The overfishing and illegal fishing taking place around the Great Barrier Reef is ruining the marine life's population and habitats. The overfishing of predatory fish is having a significant impact on the ecosystem of the reef. In the article Fishing Impacts on the Great Barrier Reef, it explains that removal of large amounts of predatory fish such as coral trout and snapper, had an impact on the balance of the ecosystem in which they lived in. These imbalances have caused cyclones, coral bleaching, and climate change. (“Science Daily”). Illegal fishing, especially in marine protected areas is destroying the marine life around the reef. The article What are Marine Protected Areas, helped explain the topic. Marine protected areas are …show more content…
Removing predatory fish such as coral trout and snapper, through excessive fishing, causes significant changes to the makeup of the reef's fish populations (“Science Daily”). Coral trout and snapper fish remain to be the main target of both recreational and commercial fishers. Both fishes are predators that consume smaller prey fish. The reduction in predator abundance through fishing has altered the balance and structure of the coral reefs ecosystem. Trawling for prawns is permitted in over one third of the marine park. Due to how the reef is subjected to high levels of fishing high numbers of non targeted fish capture (bycatch) has increased and there has also been some damage to the seafloor. This is important because the seafloor is home to many plants and animals (“Threats”). Many animals throughout The Great Barrier Reef have been affected massively by illegal fishing and the occurrence of bycatch. Dugongs that live in the shallows of The Great Barrier Reef have been affected by illegal fishing. Due to illegal fishing Dugongs, an already endangered species, get entangled in fisheries gear and become bycatch which is making their numbers in the marine park dwindle. If illegal fishing continues at the rate it’s going right now the ecosystem will collapse. Due to the high amount of predators being caught …show more content…
The Australian government has recently come out with a 2050 Long-Term Sustainability Plan, which aims to ensure the Outstanding Universal Value of the Great Barrier Reef continues to improve each decade between now and 2050. In this, they plan to address the issues of illegal fishing and create stricter laws against fishing in and around The Great Barrier Reef. The Australian government plans to not entirely ban fishing in The Great Barrier Reef but rather track the areas of endangered species and where vast amount of fish are and mark it off so recreational and commercial fishers know not to fish in or around there. By doing this helps with solving bycatch and also the massive amount of predators that are being caught. Another major thing being done to fix this problem is providing extra protection to turtles and dugongs through tough new laws against poaching, and improved sustainability agreements with Indigenous communities (“Highlights of”). Because Indigenous communities are one of the big groups fishing in The Great Barrier Reef by having sustainability agreements between them and the Australian government solves the amount of fish they are catching and where they are allowed to fish and the amount of bycatch. The Joint Field management program has
The nonnative species of the lionfish, living in tropical waters to depths far below is an unseen threat by first glance. Truth behold, this fish is a serious pest since the first sighting in Dania Beach back in the 1980s. Presently, it has grown out of its bounds and causes harm not only to the sea life but trouble to humans as well. An unmatched appetite with a fast and large reproduction to spawn its species in a matter of only a short time, makes this invasive fish at the top of a sounding alarm. Clever biological adaptations have made this fish a tough fighter to the ecosystem and only in the past few years have we learned to take effective measures to control their population to save our coral reefs.
The Aboriginal Australian and the Torres Strait Islander has long known and used the Great Barrier Reef. The Reef is also an important cultural feature to them as they have lived in the area for at least 40,000 years.
Lionfish are not currently listed as threatened in their native range. However, the increase in pollution in coral reefs can negatively affect the lionfish's primary food sources (NOAA, 2011). If lionfish are unable to adapt to declines in their prey species, their numbers will decrease. Although between the increasing reef pollution and the Lionfish’s voracious appetite reef populations will more than likely be damaged beyond repair, they may even be close to elimination by the time the Lionfish population actually declines (Albins, 2013).
Earth, an endless source of wonder and beauty, produced the Great Barrier Reef. Hustling and bustling, the Reef thrives like a busy city, teeming with life. Sheltering thousands, corals, maintain the well-being of the Reef; however, the world threatens its nature and delicacy. Populations growing and technological advances increasing, the world becomes more and more disconnected with the natural world, posing an alarming risk for the planet we live on. Although many organizations try to keep the oceans clean, because of human interference and unnatural occurrences, the Great Barrier Reef needs scientific help to adapt corals to new conditions for means of survival, putting pressure on the Australian government to save their ocean environment.
With a coastline of over 202 000 km and over a fourth of the world’s freshwater resources, it is no wonder why Canada’s fishing industry is a huge part of its economy.1 Canada exports more than 75% of its fish to over 130 countries worldwide. Many of the 7 million people who reside on the coast depend on the ocean’s resources. In total, Canada’s entire fishing industry is worth around 5$ billion dollars a year, being one of the world’s most valuable. However, the coasts have not been treated by respect; overfishing, over consumption, and wasteful practices has deteriorated, not only the industry, but the ecosystems and fish populations. This is a huge global issue; the worldwide collapse of fisheries has been project for 2048. Slowly, as the trends continue, we will inevitably see many fish species start to disappear. In fact, the ill-treatment of species on the Canadian border has already devastated a large specie, the cod.
Humans have a very large effect on the ecosystems of coral reefs. Sensitivity of coral reefs causes them to be more susceptible to harmful anthropogenic practices. Some of these are sedimentation, global warming, recreational activities, poison fishing, blast fishing practices, water pollution, and coral mining. All of these very different practices can effectively end up with the same results; the mortality of coral reefs around the world. Coral reefs are an important ecosystem of the world, and support many different industries and millions of people.
There are many actions we can take to help the great barrier reef survive, such us using different means of transport like walking or biking, which decreases pollutions like oils and gas, also reducing the use of plastic bottles, straws and containers will also help, as well as volunteering at a beach cleanup events.
Due to the demand many packaging for the fish can find its was back to sea, or when fishermen are out at sea they can leave their garbage. Many nets from the boats and gears can also be found in the water, that fish can later see as food, eat it, and die; this ties back to extinction in fish. There is much pollution and decline stocks in fish because it is very hard to regulate the seas. To fulfill the growing demand for seafood, many companies are forced to fish beyond areas that are supposed to be non-fishing zones. This is because there are hardly any laws or restrictions telling them where they can and cannot fish. Sally Driscoll and Tom Warhol report in, ‘Overfishing’, that itt wasn’t until 1956 where we saw our first regulation, the United Nations organized the first UN Convention of the Law of the Sea or the NCLOS which helped promote rights of all countries by establishing boundaries off shore. Meaning that some seafood fished in certain areas of the ocean cannot be sold in certain countries, and in some areas it is illegal to fish unless you have a permit from that country. Economy also helps make it harder to regulate the seas, in ‘Overfishing’ it is explained that Preisdent Barack Obama brought up Antiquities Act of 1906, that let fishermen expand their fishing areas. The United Nations FAO estimates that 25 percent of all fish trapped in nets are labeled unusable or not licensed for fishing by the
For years corporations have been depleting the oceans of its wildlife for our benefit. However, one thing these corporations tend to not mention is the bycatch they encounter when catching fish for the purpose of consumption. The definition of bycatch “is the unintended capture of nontarget animals…”(Crowder and Murawski pg.1). Bycatch takes a negative toll on our ocean ecosystem that cannot be reversed.
There are many impacts that fishing and land animal farming have on the ocean, which are detrimental to ocean ecosystems as well as many other aspects of the environment. Overfishing, killing fish at a much quicker rate than the fish can repopulate, is one major problem. Three-fourths of the world’s fisheries are either fully exploited, overexploited, or depleted (Cowspiracy). Researchers have estimated an end of all viable fisheries by 2018 if the current trends of fishing continue (Mason). According to the Monterey Bay Seafood Watch, hundreds of thousands of animals die every year as bycatch, with one of the worst offenders being shrimp fisheries, catching up to six pounds of bycatch per pound of shrimp. Endangered species are also caught, including predators which are important in keeping the balance in ocean ecosystems (Smith). While many organizations such as the Monterey Bay Aquarium Seafood Watch recommend consumers to eat more “sustainable” fish, this will not stop the massive environmental impacts. Sustainable fishing for one does not account for the natural flux in the population of species of fish; what is considered a sustainable amount of fish to harvest one year may deplete the fishery in another year (Smith). Sustainable fish also are becoming even less sustainable as companies that label sustainable fish must find more For example, after Wal-Mart pledged to selling Marine Stewardship
Coral reef destruction happens for many reasons. The primary reasons include climate change, unsustainable fishing, and pollution (“Threats”). As the temperature increases the amount of coral bleaching and the spread of diseases will increase as well. The CO2 absorbed into the ocean reduces the amount of coral building. Using bottom-contact gear to fish could directly damage the coral reefs and bottom trawling creates the worst damages where it is allowed. Disease affecting the corals has become a problem recently as well as aquatic invasive species. Coral reef destruction is seen in all the oceans where coral reefs are present, some are restoring better than others.
The Great barrier reef has had many recent hardships, including water pollutants and the increasing water temperature. Although it may be too late to save this particular reef we the people must not be so nearsighted to the
Such faults are like walking on the coral without a care, dropping anchors on the coral, dragging diving gear over them, breaking them and taking them home as souvenirs and knocking and grounding boats on them. But these are just a few examples of how humans treat the reef. Also things like pollution such as sewerage, oil spills, sunscreen, fertilisers and pesticides damage the reef; it spreads though the water then kills off living creatures. Prawn trawling destroys up to ten times more creatures than are actually harvested. Endangered marine turtles are still dying in nets; huge areas of seafloor are laid waste by destructive trawl
Coral reefs are well known for their colorful array of marvelous sights including a parade of exotic flora and fauna. They are said to be the foundation for a quarter of marine species, and are a crucial support for human life as well. The coral reef ecosystem is a diverse collection of species (ranging from microscopic to larger-than-life in size) that interact with each other and their physical environment. If any piece of a coral reef is harmed or removed the entire community can be seriously affected, even to the point of collapse. Unfortunately, human impact has resulted in long-term stresses that, unlike the short-term stress of natural disasters, coral reefs are not as capable to recover from. “Approximately half of the world’s coral reef ecosystem resources are considered by scientists to be in 'poor' or 'fair' condition and have declined over time due to several anthropogenic threats” (“Status of Corals” par. 2). Through poorly administered commercial practices, carelessness and ignorance among the common people, and human aggravated natural processes coral reef destruction has become a serious issue afflicting the world’s biodiversity and it’s intricate biosphere mechanics (“Human Impact on the Great Barrier Reef” 1) (“What Are Coral Reefs?” 1).
Unless the current situation improves, stocks of all organisms that are currently fished for food are predicted to collapse drastically by 2048 (WWF 2.) Briggs emphasizes that over-fishing “has induced population collapses in many species. So instead of having less than a hundred species at risk, as was the case some 30-40 years ago, there are now a thousand or more