Overfishing
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The document discusses several issues with overfishing, including depleting fish populations, discarding unwanted catch, and bottom trawling damaging seafloor habitats. It provides examples of overfishing causing the cod population collapse in Canada in 1992, which resulted in economic crisis and job losses. Additionally, it discusses threats from shark finning and issues with aquaculture. Solutions proposed include creating no-take zones to help species regenerate and moving to more sustainable aquaculture practices.
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overfishing 10-8 2011
The document discusses the issue of overfishing and its negative impacts. It defines overfishing as catching fish faster than populations can replenish. While the world's oceans could theoretically support four planets' worth of fish, many species have become reduced or extinct due to overfishing. The document also examines fishing down the food chain, bycatch, bottom trawling, and how both overfishing and government subsidies of the fishing industry can harm marine ecosystems.
Mila, alex k, teodor 103 overfishing ppt
Overfishing occurs when more fish are caught than can naturally replenish, threatening the balance of aquatic ecosystems. Methods like bottom trawling are especially destructive as they involve dragging heavy nets along the seafloor and result in substantial unintended bycatch. The effects of overfishing include decreased biodiversity, disruption of food webs and ecosystem balance, destruction of habitats like reefs, and depletion of a major food source that can ruin fishing industries. No-take zones that prohibit fishing have been established in some areas to allow fish populations to recover and ensure long-term prosperity of fishing. Additional measures proposed to combat overfishing include catch limits, improved enforcement, alternative fisheries, and abolishing destructive practices.
Overfishing victoria,slav,tanya
The document discusses the issue of overfishing and its negative consequences. It provides background on overfishing, including its definition as catching more fish than can be replaced through natural reproduction. The document outlines some consequences of overfishing like species extinction and decreases in fish sizes. It examines specific examples of overfishing problems like the collapse of Atlantic cod populations. Additionally, the document discusses concepts like bycatch and different fishing methods, and proposes solutions such as no-take zones to help mitigate overfishing.
Overfishing by yuliya_miryana_bedros
Overfishing has led to declines in fish populations and damaged ocean ecosystems. Early overfishing in the 1800s depleted whale populations for oil. After WWII, efforts to increase protein availability quadrupled fishing capacity. Today the annual global fish catch exceeds 120 million tons, though overfishing is reducing populations of many species. Destructive fishing methods like bottom trawling damage coral reefs and seafloor habitats. Bycatch and discarded catch also contribute to declining fish and other marine species. No-take zones that prohibit all fishing have helped restore some ecosystems and fish populations.
Overfishing stoyan elia_nadezhda_10-5
1. Overfishing is a major problem affecting many bodies of water like the Atlantic Ocean and areas around the Philippines. It disrupts ecosystems and can cause extinctions of species.
2. Techniques like bottom trawling that indiscriminately catch large amounts of fish and other sea life are very harmful. They destroy ocean habitats and catch unintended species as bycatch.
3. No-take zones that prohibit fishing have had some success in restoring ecosystems and increasing biodiversity and fish populations, which can also help fishing industries.
Overfishing karina nina_ivoslav_10-7[1]
The document discusses the problem of overfishing and its negative impacts. It notes that fishing rates currently exceed fish reproduction rates, and that overfishing has led to a decline in fish populations and sizes. Certain destructive fishing methods like bottom trawling and gillnetting contribute significantly to bycatch and damage fish habitats. Examples are provided of overfished areas like the cod fisheries in Newfoundland and bluefin tuna in the Mediterranean. Proposed solutions mentioned include establishing no-take marine zones and restricting fishing during fish reproduction seasons.
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This document discusses the issue of overfishing and its consequences. It explains that overfishing occurs when fish populations cannot replenish themselves quickly enough due to too many fish being caught. Major causes are industrial fishing trawlers that indiscriminately catch huge amounts of fish and sea life. This has depleted fish stocks by 70% and threatens the extinction of many species like bluefin tuna, sharks, and whales by 2050 if no action is taken. The document urges people to choose sustainable seafood options and petition against destructive fishing practices to help protect ocean ecosystems.
Overfishing2
Overfishing is catching too many fish and depleting fish populations. It occurs in three main ways: harvesting fish before maturity, leaving insufficient adults to reproduce, and overfishing predator species which disrupts ecosystems. Global fish catches peaked in 2006 at 144 million tons but over half of fish stocks are now fully or overexploited. Destructive fishing practices like bottom trawling and cyanide fishing damage ocean habitats while bycatch wastes untargeted species. Overfishing led to the complete collapse of Newfoundland cod fisheries in the 1990s. Bluefin tuna faces extinction due to overfishing and uncertain catch quotas.
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overfishing 10-8 2011
The document discusses the issue of overfishing and its negative impacts. It defines overfishing as catching fish faster than populations can replenish. While the world's oceans could theoretically support four planets' worth of fish, many species have become reduced or extinct due to overfishing. The document also examines fishing down the food chain, bycatch, bottom trawling, and how both overfishing and government subsidies of the fishing industry can harm marine ecosystems.
Mila, alex k, teodor 103 overfishing ppt
Overfishing occurs when more fish are caught than can naturally replenish, threatening the balance of aquatic ecosystems. Methods like bottom trawling are especially destructive as they involve dragging heavy nets along the seafloor and result in substantial unintended bycatch. The effects of overfishing include decreased biodiversity, disruption of food webs and ecosystem balance, destruction of habitats like reefs, and depletion of a major food source that can ruin fishing industries. No-take zones that prohibit fishing have been established in some areas to allow fish populations to recover and ensure long-term prosperity of fishing. Additional measures proposed to combat overfishing include catch limits, improved enforcement, alternative fisheries, and abolishing destructive practices.
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The document discusses the issue of overfishing and its negative consequences. It provides background on overfishing, including its definition as catching more fish than can be replaced through natural reproduction. The document outlines some consequences of overfishing like species extinction and decreases in fish sizes. It examines specific examples of overfishing problems like the collapse of Atlantic cod populations. Additionally, the document discusses concepts like bycatch and different fishing methods, and proposes solutions such as no-take zones to help mitigate overfishing.
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Overfishing has led to declines in fish populations and damaged ocean ecosystems. Early overfishing in the 1800s depleted whale populations for oil. After WWII, efforts to increase protein availability quadrupled fishing capacity. Today the annual global fish catch exceeds 120 million tons, though overfishing is reducing populations of many species. Destructive fishing methods like bottom trawling damage coral reefs and seafloor habitats. Bycatch and discarded catch also contribute to declining fish and other marine species. No-take zones that prohibit all fishing have helped restore some ecosystems and fish populations.
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1. Overfishing is a major problem affecting many bodies of water like the Atlantic Ocean and areas around the Philippines. It disrupts ecosystems and can cause extinctions of species.
2. Techniques like bottom trawling that indiscriminately catch large amounts of fish and other sea life are very harmful. They destroy ocean habitats and catch unintended species as bycatch.
3. No-take zones that prohibit fishing have had some success in restoring ecosystems and increasing biodiversity and fish populations, which can also help fishing industries.
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The document discusses the problem of overfishing and its negative impacts. It notes that fishing rates currently exceed fish reproduction rates, and that overfishing has led to a decline in fish populations and sizes. Certain destructive fishing methods like bottom trawling and gillnetting contribute significantly to bycatch and damage fish habitats. Examples are provided of overfished areas like the cod fisheries in Newfoundland and bluefin tuna in the Mediterranean. Proposed solutions mentioned include establishing no-take marine zones and restricting fishing during fish reproduction seasons.
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This document discusses the issue of overfishing and its consequences. It explains that overfishing occurs when fish populations cannot replenish themselves quickly enough due to too many fish being caught. Major causes are industrial fishing trawlers that indiscriminately catch huge amounts of fish and sea life. This has depleted fish stocks by 70% and threatens the extinction of many species like bluefin tuna, sharks, and whales by 2050 if no action is taken. The document urges people to choose sustainable seafood options and petition against destructive fishing practices to help protect ocean ecosystems.
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Overfishing is catching too many fish and depleting fish populations. It occurs in three main ways: harvesting fish before maturity, leaving insufficient adults to reproduce, and overfishing predator species which disrupts ecosystems. Global fish catches peaked in 2006 at 144 million tons but over half of fish stocks are now fully or overexploited. Destructive fishing practices like bottom trawling and cyanide fishing damage ocean habitats while bycatch wastes untargeted species. Overfishing led to the complete collapse of Newfoundland cod fisheries in the 1990s. Bluefin tuna faces extinction due to overfishing and uncertain catch quotas.
Overfishing
presentation was provided by Prof W.U Chandrasekara
Department of Zoology and Environmental Management
For Coastal and Marine resource management course
2011 10.5 overfishing
Overfishing has led to unsustainable depletion of global fish stocks, with 52% of stocks fully exploited, 20% overexploited, and 7% depleted. If overfishing continues at current rates, fish populations will further decline and collapse is expected by 2050, disrupting marine ecosystems and harming economies and food security. Specific concerns include declining tuna populations, with the Mediterranean bluefin tuna facing imminent extinction without fishing reductions.
"Overfishing: Killer of the Oceans"
1) Overfishing poses a serious threat to the global economy as many nations rely heavily on commercial fishing for food and income. Without limits on catch amounts, fish populations are declining rapidly which will be disastrous financially.
2) It also endangers ocean ecosystems as removing too many fish upsets the natural balance, causing other species' populations to crash from lack of food.
3) Additionally, the vast numbers of fish killed by overfishing raises ethical concerns about the inhumane treatment of ocean life.
Overfishing
Fish are a renewable resource if populations are managed sustainably, but overfishing has become a problem recently due to advances in fishing technology allowing much higher catches. Issues arise from large nets catching unintended species and damaging ocean habitats, while methods like dynamite fishing destroy reefs. Conservation efforts are needed like limiting catches, protecting spawning populations, and creating marine reserves to allow fish stocks to recover.
Over fishing by, abdal rahman malik
Overfishing occurs when fishing activities reduce fish populations below sustainable levels. The document discusses several consequences of overfishing including depletion of fish stocks, disruption of marine ecosystems, and collapse of global fish populations by 2050 at current rates. Specific harmful fishing methods like bottom trawling are described that damage ocean habitats. Solutions proposed include establishing no-take zones for species protection and increasing aquaculture to meet food demands.
Overfishing power point
Overfishing is causing major damage to ocean ecosystems. Trawling fishing methods kill many unintended fish and discard them, while also damaging ocean floors. Popular fish like the Chilean Sea bass are being overfished to the point of endangerment. If overfishing continues at the current rate, experts predict we will deplete all fish stocks by 2048. This is unbalancing ocean environments by reducing predator populations and increasing jellyfish and rays, which leads to more algae blooms and the growth of "dead zones" - areas devoid of life. To ensure a sustainable food source for future generations, we need stronger laws against illegal fishing and overfishing to help reverse some of the damage done to oceans.
Overfishing
Overfishing and pollution are severely impacting fish populations, with over half of fish stocks fully exploited and some depleted or collapsed. If overfishing continues, there may be no fish left in the oceans by 2048. Specific species like bluefin tuna have been overfished, with only 6-12% of their original populations remaining. Bycatch, or unwanted marine life caught in nets, accounts for 2-10 pounds of discard for every 1 pound of targeted shrimp and wastes about a quarter of global catches. Different fishing methods have varying environmental impacts, and aquaculture practices also affect local ecosystems.
Overfishing
Overfishing poses major threats to ocean ecosystems through overcapacity, unsustainable fishing practices, and pollution from fishing vessels. Unsustainable fishing uses destructive nets and methods that catch too much fish and other sea life, endangering populations and distorting food chains. It also damages physical environments and habitats. If left unchecked, overfishing will waste large investments in the fishing industry and put livelihoods and businesses at risk. Solutions include setting safe catch limits based on science rather than politics, controlling bycatch, protecting important habitats, and strict monitoring and enforcement to ensure compliance.
Fishing and Geographical Issues
Ocean overfishing is simply the taking of wildlife from the sea at rates too high for fished species to replace themselves. The earliest overfishing occurred in the early 1800s when humans, seeking blubber for lamp oil, decimated the whale population. Some fish that we eat, including Atlantic cod and herring and California's sardines, were also harvested to the brink of extinction by the mid-1900s.
Shark massacre
The document summarizes key points from the documentary Seaspiracy about the negative impacts of commercial fishing on marine ecosystems and life. It argues that commercial fisheries are driving marine destruction through overfishing, bycatch that kills millions of sharks, turtles and other species each year, and pollution from abandoned fishing gear. It notes that fishing subsidies could instead end world hunger, and that without top predators like sharks, ocean ecosystems cannot be sustained. The document criticizes certifications like MSC as greenwashing and says current fishing practices will empty the oceans by 2048 if unchanged.
Overfishing
The document summarizes the negative impacts of overfishing, including the destruction of 40 tons of coral in the Pacific Ocean, 300,000 porpoise and dolphin deaths annually, 100 million sharks caught per year, and over 80% of shark species disappearing from the Atlantic Ocean. Technological advances have allowed humans to catch more fish than ever before, driving fish stocks down. Unless changes are made, all currently fished species are predicted to collapse by 2048. Possible solutions mentioned include marine stewardship councils, individual fishing quotas, marine reserves, and both short term and long term controls on fishing.
Endangered marine life allie carlson
The document discusses five endangered marine species - bluefin tuna, cape penguin, coral, gray whale, and Hector's dolphin. It notes that overfishing and pollution from human activities are the primary threats driving increased endangerment of marine life. Specifically, practices like bottom trawling, dredging, coastal development, and shark finning damage habitats and food sources. The document warns that at the current unsustainable rates, there may be no fisheries left by 2050. This would seriously harm ocean ecosystems and have negative economic and social impacts for humans.
Seaspiracy on Sheds Light on Dark Commercial Fishing Industry
Seaspiracy on Sheds Light on Dark Commercial Fishing Industry
Read the Full Post @ https://pbonlife.com/what-to-watch/seaspiracy-exposes-the-commercial-fishing-industry/
VIEW THIS DECK TO SEE
- Seaspiracy on Sheds Light on Commercial Fishing – Takeaway #1 Sharks kill 12 people a year. But humans kill 11,000 to 30,000 sharks per hour
- Seaspiracy on Sheds Light on Commercial Fishing – Takeaway #2 Sharks kill 12 people a year. But humans kill 11,000 to 30,000 sharks per hour
- Seaspiracy on Sheds Light on Commercial Fishing – Takeaway #3 Plastic straws account for just 0.03% of ocean plastic.
- Seaspiracy on Sheds Light on Commercial Fishing – Takeaway #4 If we continue as we are, oceans will be empty by 2048.
- Seaspiracy on Sheds Light on Commercial Fishing – Takeaway #5 The fishing industry gets $35 billion in subsidies a year.
About 40% of fish catch worldwide is unintentionally caught and is partly thrown back into the sea, either dead or dying.
Global bycatch statistic: killed accidentally each year
300,000 small whales and dolphins
Estimated loss in annual economic impact due to the diversion of fish from the legitimate trade system is US $26 - $50 billion, while losses to countries’ tax revenues are between US $2 - $4 billion.
===============================================
Read the Full Post @ https://pbonlife.com/what-to-watch/seaspiracy-exposes-the-commercial-fishing-industry/
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See What to Binge Watch @ https://pbonlife.com/what-to-watch/
Environmental impact of fishing and carbon footprinting due to fishing
The document discusses the environmental impacts of fishing, including overfishing, bycatch, and effects on marine habitats. It provides details on how different fishing techniques can damage habitats and remove large amounts of seabed life. Bycatch is a major issue, with nets capturing mammals, sea turtles, sharks, and seabirds. The carbon footprint of fishing is also examined, with global fisheries estimated to emit 134 million tons of CO2 annually. The document concludes by stating that individuals and corporations can help mitigate climate change by reducing their carbon footprints through actions like purchasing carbon offsets.
The Global Ocean Crisis
The world’s oceans are home to an incredibly diverse array of life and are vital to human health, livelihood, and culture. Despite these rich benefits, oceans, marine wildlife, and their ecosystems continue to be damaged by human activities. Watch this presentation to learn more!
Fisheries depletion
Fisheries around the world are becoming over-exploited due to increased demand for fish and advances in fishing technology. Half of marine fisheries are now fully exploited or over-exploited, threatening this important food source. Solutions include designating protected fishing areas to allow fish populations to recover, and expanding sustainable aquaculture. However, overfishing remains a major threat, and without further regulation of fishing industries fisheries could collapse by 2048.
The seafood industry’s affect on the world’s oceans
The document summarizes issues facing the seafood industry, including overfishing, illegal fishing, bycatch, and environmental impacts of some fishing and aquaculture practices. It notes that overfishing has reduced fish populations to just 10% of original levels and 75% of fisheries are overexploited. Improper aquaculture can also damage habitats and pollute waters. Sustainable solutions proposed include improved management of fisheries through catch limits, protected areas, and more selective fishing gear to reduce bycatch and habitat damage.
Conservation and management of coral reefs
Coral reefs are diverse underwater ecosystems known as the "rainforests of the sea." They occupy less than 1% of the ocean but are home to 25% of marine species and provide $375 billion in annual economic value. Coral reefs face many threats including pollution, sedimentation, rising ocean temperatures, overfishing, and coastal development. International regulations and marine protected areas help conserve reefs, but more needs to be done to sustain them such as enforcing laws, creating artificial reefs, and focusing on prevention over restoration.
Globalization Fish Quotas
Overfishing is causing major environmental, economic, and political problems globally. Environmentally, overfishing damages ocean ecosystems and fish stocks. Economically, there are too many fishing vessels chasing too few fish, overcapitalizing the industry. Politically, countries struggle to agree on and enforce fishing quotas to regulate catch amounts. Potential solutions include implementing rights-based fisheries management, promoting sustainable practices, and increasing international cooperation through agreements.
Chapter 11 presen part 1
Major threats to aquatic biodiversity include habitat loss, invasive species, pollution, climate change, and overexploitation, which are exacerbated by human population growth. The greatest marine biodiversity is found at coral reefs, estuaries, and on the deep ocean floor. While protections for whales have led to recovery of some populations, others are still threatened by illegal hunting. Invasive species like the Asian swamp eel and lionfish degrade ecosystems, while activities such as agriculture, development, and waste dumping pollute waterways and oceans. Climate change poses a growing threat through sea level rise, warming, and acidification. Overfishing has driven many fish species toward extinction.
Overfishing
This short document promotes creating presentations using Haiku Deck, a tool for making slideshows. It encourages the reader to get started making their own Haiku Deck presentation and sharing it on SlideShare. In just one sentence, it pitches the idea of using Haiku Deck to easily create engaging slideshows.
2010 overfishing presentation-overfishing.org_v1.2
Thanks to Pepijn Koster for Permission http://overfishing.org
"this version is from February 2011, a newer version might be available".
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Overfishing
presentation was provided by Prof W.U Chandrasekara
Department of Zoology and Environmental Management
For Coastal and Marine resource management course
2011 10.5 overfishing
Overfishing has led to unsustainable depletion of global fish stocks, with 52% of stocks fully exploited, 20% overexploited, and 7% depleted. If overfishing continues at current rates, fish populations will further decline and collapse is expected by 2050, disrupting marine ecosystems and harming economies and food security. Specific concerns include declining tuna populations, with the Mediterranean bluefin tuna facing imminent extinction without fishing reductions.
"Overfishing: Killer of the Oceans"
1) Overfishing poses a serious threat to the global economy as many nations rely heavily on commercial fishing for food and income. Without limits on catch amounts, fish populations are declining rapidly which will be disastrous financially.
2) It also endangers ocean ecosystems as removing too many fish upsets the natural balance, causing other species' populations to crash from lack of food.
3) Additionally, the vast numbers of fish killed by overfishing raises ethical concerns about the inhumane treatment of ocean life.
Overfishing
Fish are a renewable resource if populations are managed sustainably, but overfishing has become a problem recently due to advances in fishing technology allowing much higher catches. Issues arise from large nets catching unintended species and damaging ocean habitats, while methods like dynamite fishing destroy reefs. Conservation efforts are needed like limiting catches, protecting spawning populations, and creating marine reserves to allow fish stocks to recover.
Over fishing by, abdal rahman malik
Overfishing occurs when fishing activities reduce fish populations below sustainable levels. The document discusses several consequences of overfishing including depletion of fish stocks, disruption of marine ecosystems, and collapse of global fish populations by 2050 at current rates. Specific harmful fishing methods like bottom trawling are described that damage ocean habitats. Solutions proposed include establishing no-take zones for species protection and increasing aquaculture to meet food demands.
Overfishing power point
Overfishing is causing major damage to ocean ecosystems. Trawling fishing methods kill many unintended fish and discard them, while also damaging ocean floors. Popular fish like the Chilean Sea bass are being overfished to the point of endangerment. If overfishing continues at the current rate, experts predict we will deplete all fish stocks by 2048. This is unbalancing ocean environments by reducing predator populations and increasing jellyfish and rays, which leads to more algae blooms and the growth of "dead zones" - areas devoid of life. To ensure a sustainable food source for future generations, we need stronger laws against illegal fishing and overfishing to help reverse some of the damage done to oceans.
Overfishing
Overfishing and pollution are severely impacting fish populations, with over half of fish stocks fully exploited and some depleted or collapsed. If overfishing continues, there may be no fish left in the oceans by 2048. Specific species like bluefin tuna have been overfished, with only 6-12% of their original populations remaining. Bycatch, or unwanted marine life caught in nets, accounts for 2-10 pounds of discard for every 1 pound of targeted shrimp and wastes about a quarter of global catches. Different fishing methods have varying environmental impacts, and aquaculture practices also affect local ecosystems.
Overfishing
Overfishing poses major threats to ocean ecosystems through overcapacity, unsustainable fishing practices, and pollution from fishing vessels. Unsustainable fishing uses destructive nets and methods that catch too much fish and other sea life, endangering populations and distorting food chains. It also damages physical environments and habitats. If left unchecked, overfishing will waste large investments in the fishing industry and put livelihoods and businesses at risk. Solutions include setting safe catch limits based on science rather than politics, controlling bycatch, protecting important habitats, and strict monitoring and enforcement to ensure compliance.
Fishing and Geographical Issues
Ocean overfishing is simply the taking of wildlife from the sea at rates too high for fished species to replace themselves. The earliest overfishing occurred in the early 1800s when humans, seeking blubber for lamp oil, decimated the whale population. Some fish that we eat, including Atlantic cod and herring and California's sardines, were also harvested to the brink of extinction by the mid-1900s.
Shark massacre
The document summarizes key points from the documentary Seaspiracy about the negative impacts of commercial fishing on marine ecosystems and life. It argues that commercial fisheries are driving marine destruction through overfishing, bycatch that kills millions of sharks, turtles and other species each year, and pollution from abandoned fishing gear. It notes that fishing subsidies could instead end world hunger, and that without top predators like sharks, ocean ecosystems cannot be sustained. The document criticizes certifications like MSC as greenwashing and says current fishing practices will empty the oceans by 2048 if unchanged.
Overfishing
The document summarizes the negative impacts of overfishing, including the destruction of 40 tons of coral in the Pacific Ocean, 300,000 porpoise and dolphin deaths annually, 100 million sharks caught per year, and over 80% of shark species disappearing from the Atlantic Ocean. Technological advances have allowed humans to catch more fish than ever before, driving fish stocks down. Unless changes are made, all currently fished species are predicted to collapse by 2048. Possible solutions mentioned include marine stewardship councils, individual fishing quotas, marine reserves, and both short term and long term controls on fishing.
Endangered marine life allie carlson
The document discusses five endangered marine species - bluefin tuna, cape penguin, coral, gray whale, and Hector's dolphin. It notes that overfishing and pollution from human activities are the primary threats driving increased endangerment of marine life. Specifically, practices like bottom trawling, dredging, coastal development, and shark finning damage habitats and food sources. The document warns that at the current unsustainable rates, there may be no fisheries left by 2050. This would seriously harm ocean ecosystems and have negative economic and social impacts for humans.
Seaspiracy on Sheds Light on Dark Commercial Fishing Industry
Seaspiracy on Sheds Light on Dark Commercial Fishing Industry
Read the Full Post @ https://pbonlife.com/what-to-watch/seaspiracy-exposes-the-commercial-fishing-industry/
VIEW THIS DECK TO SEE
- Seaspiracy on Sheds Light on Commercial Fishing – Takeaway #1 Sharks kill 12 people a year. But humans kill 11,000 to 30,000 sharks per hour
- Seaspiracy on Sheds Light on Commercial Fishing – Takeaway #2 Sharks kill 12 people a year. But humans kill 11,000 to 30,000 sharks per hour
- Seaspiracy on Sheds Light on Commercial Fishing – Takeaway #3 Plastic straws account for just 0.03% of ocean plastic.
- Seaspiracy on Sheds Light on Commercial Fishing – Takeaway #4 If we continue as we are, oceans will be empty by 2048.
- Seaspiracy on Sheds Light on Commercial Fishing – Takeaway #5 The fishing industry gets $35 billion in subsidies a year.
About 40% of fish catch worldwide is unintentionally caught and is partly thrown back into the sea, either dead or dying.
Global bycatch statistic: killed accidentally each year
300,000 small whales and dolphins
Estimated loss in annual economic impact due to the diversion of fish from the legitimate trade system is US $26 - $50 billion, while losses to countries’ tax revenues are between US $2 - $4 billion.
===============================================
Read the Full Post @ https://pbonlife.com/what-to-watch/seaspiracy-exposes-the-commercial-fishing-industry/
More on Food @ https://pbonlife.com/all-about-food/
See What to Binge Watch @ https://pbonlife.com/what-to-watch/
Environmental impact of fishing and carbon footprinting due to fishing
The document discusses the environmental impacts of fishing, including overfishing, bycatch, and effects on marine habitats. It provides details on how different fishing techniques can damage habitats and remove large amounts of seabed life. Bycatch is a major issue, with nets capturing mammals, sea turtles, sharks, and seabirds. The carbon footprint of fishing is also examined, with global fisheries estimated to emit 134 million tons of CO2 annually. The document concludes by stating that individuals and corporations can help mitigate climate change by reducing their carbon footprints through actions like purchasing carbon offsets.
The Global Ocean Crisis
The world’s oceans are home to an incredibly diverse array of life and are vital to human health, livelihood, and culture. Despite these rich benefits, oceans, marine wildlife, and their ecosystems continue to be damaged by human activities. Watch this presentation to learn more!
Fisheries depletion
Fisheries around the world are becoming over-exploited due to increased demand for fish and advances in fishing technology. Half of marine fisheries are now fully exploited or over-exploited, threatening this important food source. Solutions include designating protected fishing areas to allow fish populations to recover, and expanding sustainable aquaculture. However, overfishing remains a major threat, and without further regulation of fishing industries fisheries could collapse by 2048.
The seafood industry’s affect on the world’s oceans
The document summarizes issues facing the seafood industry, including overfishing, illegal fishing, bycatch, and environmental impacts of some fishing and aquaculture practices. It notes that overfishing has reduced fish populations to just 10% of original levels and 75% of fisheries are overexploited. Improper aquaculture can also damage habitats and pollute waters. Sustainable solutions proposed include improved management of fisheries through catch limits, protected areas, and more selective fishing gear to reduce bycatch and habitat damage.
Conservation and management of coral reefs
Coral reefs are diverse underwater ecosystems known as the "rainforests of the sea." They occupy less than 1% of the ocean but are home to 25% of marine species and provide $375 billion in annual economic value. Coral reefs face many threats including pollution, sedimentation, rising ocean temperatures, overfishing, and coastal development. International regulations and marine protected areas help conserve reefs, but more needs to be done to sustain them such as enforcing laws, creating artificial reefs, and focusing on prevention over restoration.
Globalization Fish Quotas
Overfishing is causing major environmental, economic, and political problems globally. Environmentally, overfishing damages ocean ecosystems and fish stocks. Economically, there are too many fishing vessels chasing too few fish, overcapitalizing the industry. Politically, countries struggle to agree on and enforce fishing quotas to regulate catch amounts. Potential solutions include implementing rights-based fisheries management, promoting sustainable practices, and increasing international cooperation through agreements.
Chapter 11 presen part 1
Major threats to aquatic biodiversity include habitat loss, invasive species, pollution, climate change, and overexploitation, which are exacerbated by human population growth. The greatest marine biodiversity is found at coral reefs, estuaries, and on the deep ocean floor. While protections for whales have led to recovery of some populations, others are still threatened by illegal hunting. Invasive species like the Asian swamp eel and lionfish degrade ecosystems, while activities such as agriculture, development, and waste dumping pollute waterways and oceans. Climate change poses a growing threat through sea level rise, warming, and acidification. Overfishing has driven many fish species toward extinction.
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"this version is from February 2011, a newer version might be available".
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How I got 2.5 Million views on Slideshare (by @nickdemey - Board of Innovation)
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Eutrophication refers to an increase in nutrients like nitrogen and phosphorus in an aquatic ecosystem. This stimulates an overgrowth of algae known as algal blooms. The main sources of these excess nutrients are fertilizers and sewage from human activities. Algal blooms can deplete oxygen levels and block sunlight, harming other species and reducing biodiversity. Examples of eutrophication include the Baltic Sea and Gulf of Mexico "dead zone". Solutions involve reducing nutrient runoff from agriculture and improving waste water treatment.
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Eutrophication is the process by which a body of water becomes enriched in dissolved nutrients, usually nitrogen and phosphorus, that stimulate the growth of aquatic plant life usually resulting in the depletion of dissolved oxygen. It can occur naturally or be accelerated by human activities such as agriculture and development. When eutrophication is accelerated by human activities, it can negatively impact the balance of organisms in the body of water and potentially lead to algal blooms and fish kills due to low oxygen levels. Managing eutrophication involves reducing nutrient inputs from fertilizers and erosion.
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Eutrophication is a process where bodies of water become overly enriched with minerals and nutrients which induces excessive growth of algae. This excess algae consumes oxygen in the water impacting other organisms and can produce harmful algal blooms. One of the largest areas impacted is the Gulf of Mexico, where the Mississippi River drains large amounts of fertilizers from farms causing a massive low oxygen "dead zone". Preventing eutrophication requires reducing nutrient runoff from agriculture and other sources.
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Bioaccumulation occurs when an organism absorbs a pollutant at a rate greater than it can eliminate it, resulting in increasing concentrations of the pollutant in the organism's body over time. Biomagnification occurs when concentrations of a pollutant increase at each trophic level in a food chain. Certain substances like mercury, DDT, and radioactive materials are prone to bioaccumulation and biomagnification due to their ability to dissolve in fats and persist in the environment. A classic example is the buildup of DDT in birds of prey in North America in the 1960s which impaired reproduction.
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Eutrophication is the process by which a body of water becomes overly enriched with minerals and nutrients which induces excessive growth of algae. This excess algae growth eventually dies and decomposes, consuming oxygen and releasing toxins. As a result, oxygen levels in the water decrease and some aquatic life may die, creating "dead zones". Two major examples discussed are the Gulf of Mexico dead zone caused by fertilizer runoff from farming, and the Baltic Sea dead zone exacerbated by agricultural and municipal waste. Reducing nutrient inputs from fertilizers and wastewater is necessary to prevent further eutrophication.
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Dams and water diversions can have both positive and negative ecological impacts. Positively, dams provide benefits like hydropower, irrigation, flood control and more. However, they can also harm wildlife such as disrupting fish migration and reducing sediments downstream. This impacts wetland species and water quality. Dams may also cause erosion of downstream areas and change water temperature, flow and salinity levels. Large dam projects have additionally displaced many people from their homes. Examples highlighted are the Hoover Dam on the Colorado River and the Aswan High Dam on the Nile River.
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Bioaccumulation is the accumulation of substances in an organism that are at higher concentrations than in the environment. Substances more likely to bioaccumulate are hydrophobic, not easily biodegraded, and can bind to fat tissues. Biomagnification occurs across trophic levels as predators accumulate higher concentrations than their prey. Certain persistent organic pollutants and metals like mercury are prone to biomagnification up the food chain. Both processes can lead to toxic effects, especially in top predators like polar bears and humans who face greater risks from consuming biomagnified pollutants in food over time.
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Dams impact rivers and their ecosystems in several ways. They block migratory fish from accessing spawning habitats upstream, as fish ladders are often ineffective. This disrupts fish life cycles and populations. Dams also alter sediment and water flow, affecting water quality, aquatic habitats, and nutrient levels downstream. Large dams significantly change river landscapes and environments, sometimes flooding important habitats and destroying cultural heritage sites.
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The document discusses biomagnification and bioaccumulation of pollutants in food chains. Biomagnification occurs when pollutant concentrations increase at higher trophic levels, such as when predators accumulate larger amounts of pollutants found in their prey. Common pollutants that biomagnify include pesticides, PCBs, dioxins, and mercury. These pollutants can harm organisms and biomagnify up food chains to negatively impact human health. The document provides examples of biomagnification for various pollutants like PCBs and mercury.
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Dams have several ecological impacts:
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