Invasion of the lionfish
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Lionfish are an invasive species in the Atlantic Ocean, as they were likely introduced by aquarium fish being released. They reproduce rapidly, producing up to 2 million eggs per year, and have few natural predators. Lionfish eat many local reef fish and shrimp populations. This threatens biodiversity and commercial fisheries. To address the problem, efforts are being made to create a market for lionfish, educate the public, offer bounties, and fund research to monitor and control the lionfish population.
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Lionfish presentation final
This document discusses invasive lionfish and efforts to manage their proliferation in the Caribbean and western Atlantic. It provides background on invasive species in general and explains why lionfish pose such a serious problem, namely their exponential reproduction rates, lack of natural predators, and ability to outcompete native species. The document then outlines lionfish physiology, behavior, and impact on ecosystems. It describes ongoing lionfish management and derby programs in the region aimed at increasing lionfish catches and public education to help address the invasive threat.
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The document discusses the invasive lionfish species in the Roatan Marine Park in Honduras. It provides background on lionfish, where they are native to, how they were introduced to the Caribbean region, their voracious eating habits with no natural predators, and the devastating impact they have had on fish populations. It also discusses efforts to control the lionfish invasion through education programs, collecting and eating lionfish, and potential research internships to study lionfish.
Otters
Sea otters live in coastal areas near Alaska, Washington, and California. They eat crayfish, crabs, fish, and frogs, consuming 15-20% of their body weight daily while floating on their backs. Sea otters can live up to 25 years, though most live 10-12 years. Females are ready to mate at 3-6 years old and give birth after 5-8 month pregnancies. Sea otters have large predators including humans, sharks, bears, eagles, and killer whales.
Fascinating sea otters
The sea otter lives in coastal waters less than 1 kilometer from shore, where it eats a variety of invertebrates and small fish for 3 hours per day. It uses tools like rocks to open shelled animals and is endangered due to overhunting and oil drilling, though protected areas and education efforts aim to help the species' recovery. The document concludes that sea otters are intelligent and predicts their numbers and range will increase so they are no longer threatened.
Sea Otters
Sea otters primarily eat fish and sea urchins, consuming 20-25% of their body weight daily as they are carnivorous. They live in coastal areas of the northern Pacific Ocean from Alaska to California, preferring shallow waters. Sea otters are endangered due to past hunting during the fur trade which reduced their population from 150,000-300,000 to the thousands today. Their predators include sharks, humans, and bald eagles, and they will swim to shore to escape sharks.
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Increasing demand for fish has increased the pressure on marine life. Pollution in the water bodies has intensified and threat to aquatic biota has become worse.
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The vaquita is a small porpoise found only in the northern Gulf of California. Females can grow up to 5 feet long and weigh up to 120 pounds, while males only reach around 4.6 feet and are smaller. Vaquitas live in ocean habitats and have dark grey skin. They are solitary or live in small groups. The greatest threat to their survival is accidental death in fishing nets, with around 30 dying each year. With fewer than 200 remaining, the vaquita is one of the most critically endangered marine mammals in the world.
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Lionfish presentation final
This document discusses invasive lionfish and efforts to manage their proliferation in the Caribbean and western Atlantic. It provides background on invasive species in general and explains why lionfish pose such a serious problem, namely their exponential reproduction rates, lack of natural predators, and ability to outcompete native species. The document then outlines lionfish physiology, behavior, and impact on ecosystems. It describes ongoing lionfish management and derby programs in the region aimed at increasing lionfish catches and public education to help address the invasive threat.
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Otters
Sea otters live in coastal areas near Alaska, Washington, and California. They eat crayfish, crabs, fish, and frogs, consuming 15-20% of their body weight daily while floating on their backs. Sea otters can live up to 25 years, though most live 10-12 years. Females are ready to mate at 3-6 years old and give birth after 5-8 month pregnancies. Sea otters have large predators including humans, sharks, bears, eagles, and killer whales.
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The sea otter lives in coastal waters less than 1 kilometer from shore, where it eats a variety of invertebrates and small fish for 3 hours per day. It uses tools like rocks to open shelled animals and is endangered due to overhunting and oil drilling, though protected areas and education efforts aim to help the species' recovery. The document concludes that sea otters are intelligent and predicts their numbers and range will increase so they are no longer threatened.
Sea Otters
Sea otters primarily eat fish and sea urchins, consuming 20-25% of their body weight daily as they are carnivorous. They live in coastal areas of the northern Pacific Ocean from Alaska to California, preferring shallow waters. Sea otters are endangered due to past hunting during the fur trade which reduced their population from 150,000-300,000 to the thousands today. Their predators include sharks, humans, and bald eagles, and they will swim to shore to escape sharks.
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Increasing demand for fish has increased the pressure on marine life. Pollution in the water bodies has intensified and threat to aquatic biota has become worse.
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The vaquita is a small porpoise found only in the northern Gulf of California. Females can grow up to 5 feet long and weigh up to 120 pounds, while males only reach around 4.6 feet and are smaller. Vaquitas live in ocean habitats and have dark grey skin. They are solitary or live in small groups. The greatest threat to their survival is accidental death in fishing nets, with around 30 dying each year. With fewer than 200 remaining, the vaquita is one of the most critically endangered marine mammals in the world.
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The lionfish is an invasive species native to the Indo-Pacific that was unintentionally introduced to the Caribbean Sea in the 1980s. It reproduces rapidly, matures quickly, and lacks natural predators in the Caribbean, allowing it to overpopulate reefs and consume many small reef fish. Lionfish have few natural controls and can reduce populations of native species by up to 95%, posing a major threat to Caribbean ecosystems. Management strategies aim to develop fisheries to control lionfish numbers and limit their negative ecological impacts through targeted removals.
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There are seven main species of sea turtles: loggerhead, green, leatherback, flatback, hawksbill, Kemp's ridley, and olive ridley. They live in oceans around the world and eat seaweed, crustaceans, jellyfish, and fish. Sea turtles are endangered due to threats like becoming tangled in nets, disease, pollution, and being captured. We can help sea turtles by avoiding beach development, not polluting beaches, and not capturing sea turtles.
Vaquita
The vaquita is a small porpoise found only in Mexico's Gulf of California that eats squid, fish, and crabs. There are less than 100 vaquitas remaining as they are threatened with extinction from becoming entangled in fishing gear. Key facts note they can live up to 22 years and grow to 5 feet in length and 120 pounds.
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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.
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Salmon fishing involves capturing various salmon species like Atlantic salmon, Pacific salmon, trout and char. Salmon are an important commercial product, with countries like Japan consuming large amounts. Salmon fishing seasons vary by location but generally occur between January to November in places like Scotland. The salmon population has declined in recent decades due to pollution and other factors. Salmon aquaculture is a major industry, with Chile being one of the world's largest producers. The total annual economic impact of salmon fishing is estimated to be around $18 billion.
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.
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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.
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Contents:
- Salmon (General Information)
- Prouct
- Life Cycle
- Nutritive Value
- Methods
- Disadvantages
A Threat To Our Future
Shark fin soup and the shark trade is threatening sharks and ocean health. Use this presentation to raise awareness and cause local change, protecting sharks and ocean health.
Sea turtles biodiversity presentation
This document summarizes information about 7 species of sea turtles: Flatback, Green, Hawksbill, Kemp's Ridley, Leatherback, Loggerhead, and Olive Ridley. It provides details on their appearance, size, diet, threats, and conservation status. For example, it states that the Leatherback is the largest sea turtle, reaching up to 1.9 meters and 506 kilograms, and it is critically endangered. The document also outlines conservation efforts like establishing protected habitats and enforcing laws to protect sea turtles and their nesting beaches.
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.
Fishery
The document discusses commercial fisheries and their importance for food and livelihoods in developing countries. It notes that over 100 million people depend on fisheries and that sustainable use is important to maintain balances in ocean ecosystems. The majority of fishing occurs on continental shelves, where conditions like shallow waters and nutrient circulation support phytoplankton growth and dense fish populations. Different fishing technologies are used for inshore and offshore fishing.
Save Sharks
“Nothing in life is to be feared. It is only to be understood.” – Marie Curie
Sharks are disappearing without us noticing or caring. They are facing extinction. Some species are over 90% extinct.
More than 100 million sharks are killed per year. There is no global protection of sharks – there is no where we can ensure sharks can escape the slaughter. And even in our protected areas, there aren’t enough resources to patrol and keep our sharks safe.
This is complicated by the fact that people don't know about the issue or don't care about sharks because they don't realize how amazing – and critical – they are. Sharks are consistently misrepresented in the media as bloodthirsty and insatiable enemies of mankind, inspiring irrational fear in every body of water. This irrational fear has resulted in a lack of sympathy or concern for what we believe to be an important and grand animal.
Sharks have been in the oceans for over 400 million years, forming the life that has evolved within the seas. As predators at the top of the food chain, they play a critical role in maintaining the health of the ocean ecosystem. We have already witnessed the complete collapse of mollusk fisheries in Chesapeake Bay and the death of much of the coral in Belize both due to the cascading domino effects when sharks were removed from those fragile ecosystems. There is no telling what far-reaching effects we may experience if we remove sharks from our oceans, but the thought terrifies me. The oceans are our life support system: they control our climate, they provide our food and they generate 70% of the oxygen we breathe and remove 70% of carbon dioxide – the global warming gas.
Sharks are prey – not predators. At this point, up to 90% of key shark species have been destroyed but the demand for is still at an all time high fueled by greed. Even our marine reserves are the target of illegal shark fisheries.
If we don’t act now, we are going to lose our sharks – and our oceans – our life support systems on this planet. Everyone needs to be aware of this situation – and everyone needs to join the fight. We can save our sharks by coming together in a grass roots movement and turning our passion into action.
www.sharksavers.com.
Turtle Conservation
This document summarizes the threats facing turtle conservation and provides information about several turtle species. It discusses major threats such as consumption of turtle eggs, artificial lighting, beach armouring, beach nourishment, predators, commercial fisheries, oil and gas exploration, ingestion of marine debris. It also provides details about specific turtle species like the hawksbill sea turtle, green sea turtle, leatherback sea turtle and olive ridley sea turtle. The document concludes by suggesting actions people can take to help turtle conservation like not eating turtle eggs and not destroying turtle habitat.
Leatherback sea turtle
The leatherback sea turtle is the largest sea turtle and can grow up to 7 feet and weigh over 2,000 pounds. It is uniquely adapted to an open ocean lifestyle with a rubbery shell and ability to dive deeper than any other sea turtle. Leatherbacks prefer soft bodied jellyfish and use backward pointing spines in their throat to retain food. While Atlantic leatherback populations may be stable or increasing, Pacific populations are declining due to threats from human activity such as fishing nets, boat strikes, and plastic ingestion. Leatherbacks are currently listed as critically endangered.
Bycatch and Discard and their sollution & effect
Many fisheries are non-selective fishing gear catching animals that they did not intend to. This non-taget extra catch is known as ‘bycatch’. • Of these bycatch species, some have a commercial value and are brought back to land by fishers to be sold. However, a large proportion is unwanted and so is discardedthrown back over the side of the boat.
FAO estimates: 7.3 million tonnes of fish is discarded every year
• Nearly 20 percent of shark species are threatened with extinction, primarily as a result of being caught accidentally on longlines. Bycatch also includes young fish that could rebuild populations if they were allowed to grow and breed.
Hundreds of thousands of sea turtles, seabirds and marine mammals, including whales, dolphins and porpoises, die as bycatch. As many as 200,000 loggerhead sea turtles and 50,000 leatherback sea turtles are caught annually. Longline fishing also kills hundreds of thousands of seabirds when they become entangled in drift nets or caught on longline hooks when they dive for bait.
This black-browed albatross has been hooked on a long-line.
Seabirds with longline fishing vessel
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By catch is the portion of the catch that is not comprised of the fishery’s target species . Species that are caught accidentally
Bycatch from a shrimp trawler
The FAO defines discards as the portion of the catch that is thrown back into the sea either dead or alive . Like marine mammals , crustaceans , and seabirds ,sharks, birds, turtles, corals ,etc.
1st Period Marine Wildlife
The document discusses various aspects of marine life found in ocean biomes. It describes coral reefs as structures produced by living organisms that cover large areas of tropical oceans. It provides examples of common marine plants like coral and seaweed. Typical animal marine life discussed include otters, clownfish, and jellyfish. It also notes that coral reefs are animals, not plants, and that sharks are no longer endangered. The document concludes that the ocean contains many diverse plant and animal types and that some marine life, like clownfish, demonstrate intelligence.
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lionfish1
The lionfish is an invasive species native to the Indo-Pacific that was unintentionally introduced to the Caribbean Sea in the 1980s. It reproduces rapidly, matures quickly, and lacks natural predators in the Caribbean, allowing it to overpopulate reefs and consume many small reef fish. Lionfish have few natural controls and can reduce populations of native species by up to 95%, posing a major threat to Caribbean ecosystems. Management strategies aim to develop fisheries to control lionfish numbers and limit their negative ecological impacts through targeted removals.
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There are seven main species of sea turtles: loggerhead, green, leatherback, flatback, hawksbill, Kemp's ridley, and olive ridley. They live in oceans around the world and eat seaweed, crustaceans, jellyfish, and fish. Sea turtles are endangered due to threats like becoming tangled in nets, disease, pollution, and being captured. We can help sea turtles by avoiding beach development, not polluting beaches, and not capturing sea turtles.
Vaquita
The vaquita is a small porpoise found only in Mexico's Gulf of California that eats squid, fish, and crabs. There are less than 100 vaquitas remaining as they are threatened with extinction from becoming entangled in fishing gear. Key facts note they can live up to 22 years and grow to 5 feet in length and 120 pounds.
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.
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Salmon fishing involves capturing various salmon species like Atlantic salmon, Pacific salmon, trout and char. Salmon are an important commercial product, with countries like Japan consuming large amounts. Salmon fishing seasons vary by location but generally occur between January to November in places like Scotland. The salmon population has declined in recent decades due to pollution and other factors. Salmon aquaculture is a major industry, with Chile being one of the world's largest producers. The total annual economic impact of salmon fishing is estimated to be around $18 billion.
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.
Fishery
The document discusses the branches of fishery which are fish culture, fish capture, and fish preservation. Fish culture involves raising aquatic animals in a controlled environment. Fish capture deals with the scientific methods of catching aquatic animals. Fish preservation aims to extend the shelf life of fish products by improving quality. The document also categorizes kinds of fish as fin fish, which have fins and scales, and shellfish, which have outer shells and includes oysters, shrimps, crabs, crayfish, scallops, lobsters, prawns, and clams.
Shark finning
The document discusses shark finning, which involves removing a shark's fins and discarding the rest of its body at sea. It notes that tens of millions of sharks are killed annually for their fins to supply the lucrative shark fin trade, primarily to meet demand for shark fin soup. This unsustainable practice has led to sharp declines in many shark populations worldwide and threatens marine ecosystem stability. While some regulations have been implemented, more protections are still needed to curb overfishing and finning and allow shark populations to recover.
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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.
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Contents:
- Salmon (General Information)
- Prouct
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- Nutritive Value
- Methods
- Disadvantages
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This document summarizes information about 7 species of sea turtles: Flatback, Green, Hawksbill, Kemp's Ridley, Leatherback, Loggerhead, and Olive Ridley. It provides details on their appearance, size, diet, threats, and conservation status. For example, it states that the Leatherback is the largest sea turtle, reaching up to 1.9 meters and 506 kilograms, and it is critically endangered. The document also outlines conservation efforts like establishing protected habitats and enforcing laws to protect sea turtles and their nesting beaches.
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.
Fishery
The document discusses commercial fisheries and their importance for food and livelihoods in developing countries. It notes that over 100 million people depend on fisheries and that sustainable use is important to maintain balances in ocean ecosystems. The majority of fishing occurs on continental shelves, where conditions like shallow waters and nutrient circulation support phytoplankton growth and dense fish populations. Different fishing technologies are used for inshore and offshore fishing.
Save Sharks
“Nothing in life is to be feared. It is only to be understood.” – Marie Curie
Sharks are disappearing without us noticing or caring. They are facing extinction. Some species are over 90% extinct.
More than 100 million sharks are killed per year. There is no global protection of sharks – there is no where we can ensure sharks can escape the slaughter. And even in our protected areas, there aren’t enough resources to patrol and keep our sharks safe.
This is complicated by the fact that people don't know about the issue or don't care about sharks because they don't realize how amazing – and critical – they are. Sharks are consistently misrepresented in the media as bloodthirsty and insatiable enemies of mankind, inspiring irrational fear in every body of water. This irrational fear has resulted in a lack of sympathy or concern for what we believe to be an important and grand animal.
Sharks have been in the oceans for over 400 million years, forming the life that has evolved within the seas. As predators at the top of the food chain, they play a critical role in maintaining the health of the ocean ecosystem. We have already witnessed the complete collapse of mollusk fisheries in Chesapeake Bay and the death of much of the coral in Belize both due to the cascading domino effects when sharks were removed from those fragile ecosystems. There is no telling what far-reaching effects we may experience if we remove sharks from our oceans, but the thought terrifies me. The oceans are our life support system: they control our climate, they provide our food and they generate 70% of the oxygen we breathe and remove 70% of carbon dioxide – the global warming gas.
Sharks are prey – not predators. At this point, up to 90% of key shark species have been destroyed but the demand for is still at an all time high fueled by greed. Even our marine reserves are the target of illegal shark fisheries.
If we don’t act now, we are going to lose our sharks – and our oceans – our life support systems on this planet. Everyone needs to be aware of this situation – and everyone needs to join the fight. We can save our sharks by coming together in a grass roots movement and turning our passion into action.
www.sharksavers.com.
Turtle Conservation
This document summarizes the threats facing turtle conservation and provides information about several turtle species. It discusses major threats such as consumption of turtle eggs, artificial lighting, beach armouring, beach nourishment, predators, commercial fisheries, oil and gas exploration, ingestion of marine debris. It also provides details about specific turtle species like the hawksbill sea turtle, green sea turtle, leatherback sea turtle and olive ridley sea turtle. The document concludes by suggesting actions people can take to help turtle conservation like not eating turtle eggs and not destroying turtle habitat.
Leatherback sea turtle
The leatherback sea turtle is the largest sea turtle and can grow up to 7 feet and weigh over 2,000 pounds. It is uniquely adapted to an open ocean lifestyle with a rubbery shell and ability to dive deeper than any other sea turtle. Leatherbacks prefer soft bodied jellyfish and use backward pointing spines in their throat to retain food. While Atlantic leatherback populations may be stable or increasing, Pacific populations are declining due to threats from human activity such as fishing nets, boat strikes, and plastic ingestion. Leatherbacks are currently listed as critically endangered.
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The seafood industry’s affect on the world’s oceans
The seafood industry’s affect on the world’s oceans
Similar to Invasion of the lionfish
Bycatch and Discard and their sollution & effect
Many fisheries are non-selective fishing gear catching animals that they did not intend to. This non-taget extra catch is known as ‘bycatch’. • Of these bycatch species, some have a commercial value and are brought back to land by fishers to be sold. However, a large proportion is unwanted and so is discardedthrown back over the side of the boat.
FAO estimates: 7.3 million tonnes of fish is discarded every year
• Nearly 20 percent of shark species are threatened with extinction, primarily as a result of being caught accidentally on longlines. Bycatch also includes young fish that could rebuild populations if they were allowed to grow and breed.
Hundreds of thousands of sea turtles, seabirds and marine mammals, including whales, dolphins and porpoises, die as bycatch. As many as 200,000 loggerhead sea turtles and 50,000 leatherback sea turtles are caught annually. Longline fishing also kills hundreds of thousands of seabirds when they become entangled in drift nets or caught on longline hooks when they dive for bait.
This black-browed albatross has been hooked on a long-line.
Seabirds with longline fishing vessel
Not only fish:
By catch is the portion of the catch that is not comprised of the fishery’s target species . Species that are caught accidentally
Bycatch from a shrimp trawler
The FAO defines discards as the portion of the catch that is thrown back into the sea either dead or alive . Like marine mammals , crustaceans , and seabirds ,sharks, birds, turtles, corals ,etc.
1st Period Marine Wildlife
The document discusses various aspects of marine life found in ocean biomes. It describes coral reefs as structures produced by living organisms that cover large areas of tropical oceans. It provides examples of common marine plants like coral and seaweed. Typical animal marine life discussed include otters, clownfish, and jellyfish. It also notes that coral reefs are animals, not plants, and that sharks are no longer endangered. The document concludes that the ocean contains many diverse plant and animal types and that some marine life, like clownfish, demonstrate intelligence.
Whale Shark
The whale shark is the largest known fish species. They can grow up to 65 feet long and weigh up to 15 tons. Whale sharks are filter feeders that eat plankton and small fish. They are found in warm tropical waters around the world. While usually harmless to humans, whale sharks are fished for their meat and fins in parts of Asia, which threatens their vulnerable population.
Bottom Breathers meeting notes 6-Dec-2019
The Bottom Breathers Dive Club document lists upcoming events for the club in January, February, and July of 2020. These include a club party in January, liveaboard diving trips in January/February and July/August, and attendance at dive industry trade shows in February. The document also discusses several invasive species, including Asian carp, green crab, sea walnut, North Pacific sea star, killer algae, veined rapa whelk, zebra mussel, and lionfish. Details are provided on the origins and environmental impacts of each invasive species. The document concludes with cooking suggestions for lionfish, describing them as tasty and healthy to eat.
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Endangered AnimalsTareaa
The document summarizes information about three endangered animals: the grizzly bear, manatee, and hawksbill turtle. For all three animals, hunting and environmental disruption have reduced populations to near extinction levels. The grizzly bear is a large, gray bear known for its hump and curved claws. The manatee is a slow-moving, seal-like animal that lives in shallow water and eats plants. The hawksbill turtle faces threats from hunting for its shell, incidental fishing catches, pollution, and degradation of its coral reef habitat.
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The document summarizes information about three endangered animals: the grizzly bear, manatee, and hawksbill turtle. For all three animals, hunting and environmental disruption have reduced populations to near extinction levels. The grizzly bear is a large, gray bear known for its hump and curved claws. The manatee is a slow-moving, seal-like animal that lives in shallow water and eats plants. The hawksbill turtle faces threats from hunting for its shell, incidental fishing catches, pollution, and degradation of its coral reef habitat.
Overfishing-molly.w
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.
Biology of selected endangered species of fishes
The document summarizes information on 6 endangered species of fish:
1. Whale shark - largest fish, filter feeds, threatened by fishing for its meat, oil and fins.
2. Ganges shark - found in Indian rivers, threatened by overfishing, habitat loss, and pollution.
3. Bigeye tuna - circumglobal distribution, threatened by overfishing managed by regional commissions.
4. Giant grouper - largest reef fish, threatened by fishing and trade despite laws in some areas.
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6. Atlantic halibut - largest flatfish, lives in
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Hannah naylor sawfish
Sawfish are large marine and freshwater fish found in tropical and subtropical waters. They have a long toothed saw-like snout used to hunt prey. Sawfish are classified in the subclass Elasmobranchii with sharks and rays. Their habitat is shallow muddy waters and they can live in both saltwater and freshwater. Sawfish are threatened by habitat loss and overfishing, and are listed as endangered in the US. Conservation efforts aim to protect sawfish waters and limit hunting.
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The document discusses various factors that affect life in the oceans including light, temperature, dissolved nutrients, salinity, and dissolved gases. It describes the different zones of the ocean and considers factors important for life in the pelagic and benthic zones. It also provides an overview of microbial life, primary producers, consumers, and examples of planktonic and benthic organisms found in the oceans.
Σπονδυλωτά - Ψάρια
Fish can be found in almost every aquatic environment, both saltwater and freshwater. They display a wide range of adaptations to their environments. The greatest diversity of fish species is found in shallow, tropical seas and areas with coral, which can support over 1,000 species of tropical fish in a small area. Fish serve as prey for larger fish and are threatened by pollution and overfishing.
Oceanography
This document discusses 7 species of sea turtles and the threats they face from human activity. It provides details on the appearance and characteristics of each species. The main threats are over-harvesting of eggs and meat, hunting for luxury items, and accidental killing from fishing nets and plastic debris. Conservation efforts include using Turtle Excluder Devices in shrimp nets, establishing protected nesting areas, promoting sustainable tourism, and advocacy work by organizations like the World Wildlife Foundation and Sea Turtle Conservancy.
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This document discusses 7 species of sea turtles and the threats they face from human activity. It provides details on the appearance and characteristics of each species. The main threats are over-harvesting of eggs and meat, hunting for luxury items, and accidental killing through fishing nets and plastic debris. Conservation efforts include using Turtle Excluder Devices in shrimp nets, establishing protected nesting areas, promoting sustainable tourism, and advocacy work by organizations like the World Wildlife Foundation and Sea Turtle Conservancy.
Oceanography
This document discusses 7 species of sea turtles and the threats they face from human activity. It provides details on the appearance and characteristics of each species. The main threats are over-harvesting of eggs and meat, hunting for luxury items, and accidental killing from fishing nets and plastic debris. Conservation efforts include using Turtle Excluder Devices in shrimp nets, establishing protected nesting areas, promoting sustainable tourism, and advocacy work by organizations like the World Wildlife Foundation and Sea Turtle Conservancy.
Shark Species In Coral Reefs Brandon Roy
This document summarizes various shark species found in coral reefs, including black-tip reef sharks, white-tip reef sharks, Caribbean reef sharks, and grey nurse sharks. It discusses characteristics of reef sharks like their diet, size, and behaviors. The document also outlines why coral reefs make good habitats for sharks, threats sharks face in reefs like overfishing, and conservation efforts to protect reef shark populations.
Ornamental fish booklet
This document provides information on several freshwater fish species. It includes details on the koi carp (Cyprinus carpio haematopterus), describing its habitat in Japan and domestication in East Asia. It also provides features of koi fish such as size, color variations, diet and temperature preferences. Information is also given on the bala shark (Balantiocheilos melanopterus) including its distribution in Southeast Asia, habitat in rivers and lakes, water quality parameters and features. Descriptions of the red tailed shark (Epalzeorhynchos bicolor), parrot fish (Scarus frenatus), crystal red shrimp (Caridina cantonensis), lionfish (Pterois volit
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Bruschetta is an Italian appetizer made by toasting bread, rubbing it with garlic, and topping it with layers of tomatoes, ham, mozzarella cheese, olive oil, salt, pepper and herbs. The simple recipe involves slicing and toasting bread, slicing tomatoes and cheese, rubbing the bread with garlic, and adding the ingredients in layers before serving with another drizzle of olive oil.
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Slang is informal language that originates from subcultures and groups outside the mainstream. It is characterized as being colloquial, imaginative, and variable over time and between regions. Slang is used to play with language creatively and to identify with social groups. It comes from sources like occupational groups, teenagers, media like movies and music. Examples are given like "pot" originating from drug culture and "c-note" from criminal slang. Slang allows users to be different, secretive, and exclude others outside their group.
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This document summarizes research by Deborah Tannen on differences in conversational styles between men and women. It finds that women tend to use conversation to establish relationships through self-disclosure and empathy, while men tend to use conversation to convey status or win arguments. These differing styles can lead to misunderstandings between men and women in conversations and relationships.
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This document discusses how language can reinforce gender biases and inequality between men and women. It provides examples of how language is often asymmetric when referring to males and females, such as generic words defaulting to the male form. Additionally, it notes that some words have neutral or positive connotations when used for men but negative meanings when used for women. The document concludes that language plays a role in shaping attitudes and the status of men and women in society by often treating males as the norm and using forms that diminish women's positions.
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The document discusses the concepts of correctness and appropriateness in language. Correctness refers to grammatical accuracy, while appropriateness means using the right language for the social context. Several factors influence appropriateness, including the participants in the conversation, the social setting, topic of discussion, and function of the speech. Common speech functions are expressive, directive, referential, and phatic language.
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Invasion of the lionfish
- 2. Do you know this fish? Why is this fish a problem? What is the problem? What can we do?
- 3. Lionfish (ミノカサゴ) Live in the Indo- Pacific area On reefs down to about 50 meters In harbors and near the shore Typical adults measure 38 cm and weigh an average of 480 g.
- 4. Lionfish High reproductive rate 2,000,000 eggs per year Eat many different kinds of fish Shrimp, reef fish, Compete with important commercial fish Popular aquarium fish
- 5. Top predators Few predators Groupers, eels, and maybe sharks Man Protected by poisonous fins Dangerous to divers and fishermen Usually not fatal, but can be very painful
- 6. Invasion Lionfish were first found off Florida in the late 1990s First Pacific Ocean fish found in the Atlantic Ocean Probably aquarium fish Dumped in ocean Spread quickly Similar environment Lots to eat
- 7. Spread
- 8. Problem Eat other fish, especially commercial fish Harm reefs
- 9. Solution Create a market for lionfish Educate Offer bounties Report & research
- 10. Thank you for listening!
- 11. Photo sources Poster: http://store.foxysbar.com/foxyslionfishhunters hirt-burntred.aspx Map (natural distribution) http://www.aquamaps.org/receive.php?type_o f_map=regular Map (Lionfish spread) http://www.blogthebeach.com/2012/nature/fis h/lionfish-in-florida-problems-and-solutions Fried lionfish http://flylifemagazine.com/recipe-delectable- lionfish-recipes-from-reef-cookbook/
Editor's Notes
- First Pacific Ocean fish found in the Atlantic Ocean