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Problems with marine debris
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Accidentally lost, intentionally discarded or abandoned fishing equipment is known as derelict fishing gear or marine debris. Historically, derelict fishing gear was not identified as an imminent threat to marine ecosystems. It was typically constructed with natural materials such as cotton or jute that degrade easily in the marine environment. However, the amount of derelict fishing gear has risen substantially over the past few decades due to increased fishing effort and the transition to durable, synthetic materials like nylon. These new materials resist deterioration and persist in the ocean for years. Derelict fishing gear harms the marine ecosystem in a variety of ways, like creating hazardous boating conditions and disturbing the …show more content…
demonstrate that removal of derelict fishing gear has significant, positive economic benefits. In their quantitative assessment of the direct impact of debris on marine resources, four known derelict nets were repeatedly surveyed by divers over the course of approximately one month. Entangled animals were observed, counted and tagged. Using this data, daily entanglement rates were estimated for various taxa. For example, the average number of invertebrates entangled per day was about 3 and the average number of fish entangled per day was 0.42. Costs incurred in locating and removing derelict nets were determined to be about $1,358 per net, and included expenses such as surveys, vessel, and disposal of derelict fishing gear. Economic benefits of marine debris removal were calculated according to the expected age of the net, the average weight of marine life recovered from the derelict gear, and the average value of the commercially important organisms saved by the net’s removal. In one example, a 10-year old net that catches about two pounds of crab per day wastes $19,656 worth of the resource. The cost-benefit ratio for recovery of this net was $1,358:$19,656 or 1: 14.5. According to the authors, this ratio justifies derelict fishing gear removal based on the value of commercial species impacted. These results enhance the position that marine debris management is
A large problem today is the incidental exploitation of the bottlenose dolphins in the Black sea. The dolphins suffer from entanglement in gillnets, shark nets, shrimp trawls, and purse seine nets in the eastern pacific tropical tuna fishery.
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
Once again, I was horrified to the amount of trash that was around the pond, as well as in it that I soon found out. This was my first official time going fishing, so all I was expecting to catch was a fish. Not long after being there, I felt a tug at the line, so I reeled it in, I had caught a cup. This same type of thing kept happening, and I was constantly reeling in trash, but no fish. At one point, I actually reeled in a shoe. I had always seen movies and pictures with guys catching boots and cans, but I had always just thought that it was a joke. I now know that it was a true depiction of the current waterways. This got me to thinking about the fish. What is happening to them? Are they being poisoned from all the trash thrown into the waterways? Are they getting buried underneath everything? To me Kaza's quote " it is not easy to gaze clear – eyed at these troubling manifestations of human activity," (63), is exactly right. After seeing this site, and thinking about the fish it was a hard concept to
Countries, fisheries, and consumers all need to share the responsibility for conserving endangered marine life. First, governments should base their policies on scientific factors and should look for better economic incentives to stop fisheries from overfishing. Second, fisheries should use methods that are not so destructive to the fish population. Finally, consumers should avoid buying endangered seafood, even if they have to pay a little more. If these parties recognize that it is worthwhile to conserve marine species, then they must accept this responsibility.
Bycatch is the accidental capture or damage of other marine species during commercial fishing. Animals such as dolphins, sea turtles, whales, seals, sea lions, etc… get caught in the nets or hooks during trawling. These animals usually end up dying from various causes, often broken fins, deep lacerations, and drowning. It is estimated that more than 300,000 small whales and dolphins are killed each year from commercial fishing. (Anne Houtman pg. 246) Furthermore, fishing methods such as bottom trawling destroy spawning grounds and invertebrates. There are fishing methods and equipment that reduce bycatch and they are growing in popularity, however, bycatch still remains a major threat to marine life.
“Just show me the tackle and give me some bait. Then watch me go fishing, the rest can wait.” Fishing is one of my favorite things to do. It is catching a fish for either food or simply for fun. You can do it by yourself to enjoy the peace and quiet or fish with others to pass the time. Many people think fishing is an old man's sport but I think of it differently. It has helped to form my values, most importantly patience.
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
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.
Butler,James N., et al. “The Bermuda Fisheries: a tragedy of the commons averted?” Environment Jan-Feb/1993/pg6+
Many of the methods used in commercial fishing are very destructive to the aquatic systems. Industrial ocean trawlers scrape the bottom of the water, often dragging up the seafloor with them. This destroys the habitat and kills many of the bottom dwelling organisms that are vulnerable to these practices. There is also a large amount of marine animals that are unintentionally caught by the large nets. These animals are considered bycatch, having no value to fishermen and are usually killed. These large fishing vessels also add a significant amount of pollution to the water. Fishing vessels cause oil spills as well as discharging chemical elements and wastes into the water. The thousands of of trawlers that pass through Japanese waters create large quantities of water pollution that can devastate aquatic life by changing the chemical composition of the water and affecting all the organisms that inhabit these
Fly fishing. A sport that many enjoy and many more think is a simple task to do. Those many people have a surprise coming their way. There are many movements, and techniques that are involved in fly fishing that make it more fun, and easier to participate in.
Did you know that more than 90 percent of all organisms that have ever lived on Earth are extinct? According to Pandey, the author of Humans Pushing Marine Life toward ‘Major Extinction’, nearly 10,000 species go extinct each year, and this rate is estimated to be 1,000 times higher than the natural extinction rate (1). Human beings are causing irreversible damage to the oceans and their wildlife, which is being led by two major reasons: Commercial fishing or over-fishing, which damaged the marine environment and caused a loss in the marine life diversity, and pollution, which is a primary way of the extinction causes that drastically modifies the marine life habitat. As a result of the commercial fishing and pollution, many of the marine species will start disappearing of the oceans. 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 (10).”
Ghost Fishing is what happens when fishing gear has been lost dumped or abandoned at sea. Lost fishing gear is among the greatest killers of marine life in our oceans. Hundreds of kilometers of nets and lines are lost every year. Any man made contraption designed to catch fish or other marine organisms is considered capable of ghost fishing when left unattended and without anyone profiting from the catch. Ghost Fishing is a serious problem because it affects already depleted commercial fish stocks. Caught fish die and in turn attract scavengers which then get caught in the same net, creating a tragic cycle. Due to the material used to create these types of gear, they can and most likely will continue to fish
Research from the University of California San Diego Scripps Institution of Oceanography said that species in the ocean consume a projected 12,000 to 24,000 tons of plastic every year in the Pacific Ocean (Nall, 2014). Pollution of recyclable materials in the oceans is one of the leading causes of why some marine species are nearing extinction. Many authors of articles and books analyzing this topic tend to agree that pollution of our oceans is a problem. The future of this problem is where their ideas tend to differ. The following four literature reviews attempt to demonstrate and support my belief that pollution is getting worse in the ocean and more marine life ecosystems are being affected, but there are things that we as humans can do to change this. Imagine a world where we didn’t have to constantly worry about the vicious cycle of humans affecting animals and then animals in turn affecting us through consumption.
...harges of Human-made Debris Comprise the Largest Source of Marine Debris in Oceans World-wide (nearly 80%)." Plastic Debris Rivers to Sea Project. N.p., n.d. Web. 16 Mar. 2014.