How does a seafood watch promote environmentally responsible fishing practices?
Seafood Watch identifies seafood that has been harvested in a sustainable manner and promotes this seafood over varieties that were not sustainably harvested. The idea is that only the fishermen utilizing sustainable practices are rewarded financially and will therefore outcompete their competitors.
Why the biodegradation of plastic might be more hazardous to the environment than the presence of plastic as marine debris?
d. a. Explain why the biodegradation of plastic might be more hazardous to the environment than the presence of plastic as marine debris. While plastic is not generally considered biodegradable, it can be broken down by the action of photodegradation and certain microbes.
What best explains the environmental problems associated with trawling?
Long line fishing and drift nets are hazardous to fish and other marine animals. Which of the following best explains the environmental problems associated with trawling? a. Trawling always destroys sea floor ecologies.
Which of the following best explains why marine debris is not caused by countries bordering the ocean?
Which of the following best explains why marine debris is not caused solely by countries bordering the ocean? Marine debris mostly originates from oceangoing ships.
How does ocean fishing affect marine ecosystems today quizlet?
Overfishing has a very large environmental impact on marine life. "Fishing down" the food chain is when fishers start at the top of a food chain, and when that species is no longer widely available, they move down on the food chain. This leads to a lack of biodiversity and unbalanced ecosystems.
Which of the following best defines sustainable fishing practices quizlet?
Which of the following best defines sustainable fishing practices? Harvesting practices that maximize yields and profits.
How does plastic degradation affect the environment?
with its accumulation, including, but not limited to, absorption and concentration of organic pollutants, hazardous effects on marine wildlife and dissemination of potentially invasive species to new environments.
Which of the following best explains why overfishing is considered bad practice?
Which of the following best explains why overfishing is considered a bad practice? a. Overfishing is not sustainable and ultimately depletes a fishery. Explain how a policy strategy to reduce, reuse, and recycle might mitigate the impacts of marine debris.
How much damage does trawling cause?
When disturbed by bottom trawling, as much as 90 percent of a coral colony perishes, and up to two-thirds of sponges are damaged. Additionally, in recent coldwater coral studies, a review of damaged areas seven years later revealed no new growth.
How does trawling or other fishing methods disrupt aquatic ecosystems?
The problem with bottom trawling is that it is un-selective in the fish it catches and severely damages marine ecosystems. Many creatures end up mistakenly caught and thrown overboard dead or dying, including endangered fish and vulnerable deep-sea corals that can live for hundreds of years or more.
Why are coral reefs overexploited quizlet?
Legislation has been ineffective at preserving coral reefs. Why are coral reefs overexploited? b. Coral and its organisms are valuable commodities in the aquarium industry.
Why is overfishing such a complex environmental issue quizlet?
Overfishing has a very large environmental impact on marine life. "Fishing down" the food chain is when fishers start at the top of a food chain, and when that species is no longer widely available, they move down on the food chain. This leads to a lack of biodiversity and unbalanced ecosystems.
Why is overfishing such a complex environmental issue?
DEGRADED ECOSYSTEMS When too many fish are taken out of the ocean it creates an imbalance that can erode the food web and lead to a loss of other important marine life, including vulnerable species like sea turtles and corals.
Which of the following best describes legislation that could be used to address problems with overfishing?
Which of the following best describes legislation that could be used to address problems with overfishing? The Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES ) uses trade rules to protect commercially valuable species.
How does sustainable fishing help the environment?
Sustainable artisanal fishing provides employment for 90% of the global fishing industry and is the basis for the development of small fishing communities. Sustainable fishing generates less waste, minimises energy consumption and reduces the use of chemicals that damage the ozone layer.
What causes plastic degradation?
In general, the effects of heat, light, air and water are the most significant factors in the degradation of plastic polymers. The major chemical changes are oxidation and chain scission, leading to a reduction in the molecular weight and degree of polymerization of the polymer.
What are the effects of waste on environment?
Air pollution, climate change, soil and water contamination… Poor waste management contributes to climate change and air pollution, and directly affects many ecosystems and species. Landfills, considered the last resort in the waste hierarchy, release methane, a very powerful greenhouse gas linked to climate change.
Why is overfishing a problem for the environment?
It can change the size of fish remaining, as well as how they reproduce and the speed at which they mature. When too many fish are taken out of the ocean it creates an imbalance that can erode the food web and lead to a loss of other important marine life, including vulnerable species like sea turtles and corals.
What is overfishing and why is it a problem?
Overfishing is catching too many fish at once, so the breeding population becomes too depleted to recover. Overfishing often goes hand in hand with wasteful types of commercial fishing that haul in massive amounts of unwanted fish or other animals, which are then discarded.
How does trawling affect overfishing?
Bottom trawling often leads to overfishing because the gear is not selective and discards a lot of dead fish. Overfishing by bottom trawls is a direct threat to local fishing communities and to tourism from sport fishing. lobster and crab fishermen in the US.
Why are trawlers bad?
there is overwhelming scientific evidence that bottom trawling causes terrible damage to seafloor ecosystems and even more terrible damage to the fragile and slow growing ecosystems of the deep sea.
Are coral reefs overexploited?
One of the main threats facing the coral reefs comes through over-exploitation of reefs. This can come in the form of over-fishing, destructive fishing practices, collecting tropical fish for aquariums or collecting fish to be used as a delicacy in Asia.
Why is overfishing such a difficult issue to solve in our oceans explain the solutions or alternatives related to sustainable fishing practices?
Overfishing is a difficult issue to solve because a lot of people around the world rely on seafood as their primary source of food. Some alternatives is to ban fishing in areas that have been affected, banning harmful practices like trawling, or to put limits on the amount of fish we harvest.
What is the environmental impact of the fishing industry?
The fishing industry affects a number of marine conservation issues, including: fish populations, water pollution, and habitat degradation. Some researchers have claimed that the size of the fishing industry needs to be significantly decreased in order to maintain healthy marine environments around the world.
What effect does fishing have on the environment?
Fishing and pollution from fishing are the largest contributors to the decline in ocean health and water quality. Ghost nets, or nets abandoned in the ocean, are made of plastic and nylon and do not decompose, wreaking extreme havoc on the wildlife and ecosystems they interrupt.
Which of the following claims would be the best solution to the pest problem based on the data in the graph?
Which of the following claims would be the best solution to the pest problem, based on the data in the graph? Use of Integrated Pest Management techniques is the most successful method because the sources for food, water, and shelter for pests are disrupted, leading to a reduced number of pests in the area.
Which of the following describes an effect of an environmental issue experienced at the global level?
Which of the following describes an effect of an environmental issue experienced at the global level? Consumers experience dizziness and nausea from pollutants in the water supply. The consumption of fossil fuels contributes to air pollution and rising CO2 levels.
Is trawling sustainable?
Dragging a fishing net through the water column or along the seafloor can be unsustainable if done so irresponsibly. But done so with proper management and careful placement, trawling can be very sustainable.
Why is sustainable fishing a problem?
Why is sustainable fishing important? According to the United Nations, a third of fish populations are overfished and 60% are fished to their biological limit. Our ocean is under enormous pressure from climate change, pollution and overfishing, including the problem of bycatch.
How does plastic affect the environment?
Chlorinated plastic can release harmful chemicals into the surrounding soil, which can then seep into groundwater or other surrounding water sources, and also the ecosystem. This can cause a range of potentially harmful effects on the species that drink the water.