Overfishing
What is overfishing?
Overfishing is catching too many fish too quickly, so the fish population can't recover.
What is the cause of watershed?
Precipitation; rain and snow
What is point source pollution?
A single identified source of pollution, such as pipes, or oil spills.
Name at least 2 environmental concerns associated with aquaculture?
water pollution, disease and parasites, genetic impact, and Habitat Destruction
Can coral come back to life after coral bleaching?
No it can't come back to life after it's been bleached.
What are some sustainable practices that can help prevent overfishing?
Practices include setting fishing limits, creating protected areas, encouraging fish farming, using selective gear, and supporting sustainable seafood.
Where is the longest watershed?
St. Lawrence River Basin
What are the effects of water pollution on aquatic ecosystems?
Water pollution can cause oxygen depletion, harmful algal blooms, and the accumulation of toxins in the food chain.
Which of the following is an unintended environmental consequence of aquaculture?
(A) Meeting an increasing demand for seafood
(B) Decreasing the prevalence of disease in nearby wild fish
(C) Contamination of surrounding water by organic waste
(D) High initial cost of facility
(C) Contamination of surrounding water by organic waste
What does HAB stand for?
Harmful Algal Blooms
What are the economic consequences of overfishing on coastal communities?
The economic impacts of overfishing include loss of jobs in fishing communities and decreased seafood availability.
Hoover Dam is the largest dam in the United States, built on the Colorado River to supply hydroelectric power and flood control. Which of the following best describes a downstream environmental effect of Hoover Dam on the Colorado River watershed?
Responses
A: The supply of inexpensive electricity led to population growth and industrial development in cities such as Phoenix and Los Angeles.
B: The Lake Mead Recreation Area, formed by the reservoir behind Hoover Dam, is a popular tourist attraction for fishing, swimming, and boating.
C: The drainage basin of the Colorado River includes 246,000 square miles and serves as a source of drinking water for over 40 million people.
D: The damming of the Colorado River led to a change in stream flow, preventing river water and sediments from reaching the delta area.
D: The damming of the Colorado River led to a change in stream flow, preventing river water and sediments from reaching the delta area.
Which of the following is an unintended environmental consequence of aquaculture?
(A) Meeting an increasing demand for seafood
(B)Decreasing the prevalence of disease in nearby wild fish
(C) Contamination of surrounding water by organic waste
(D) High initial cost of facility
(C) Contamination of surrounding water by organic waste
Which of the following is a direct economic advantage associated with aquaculture?
(A) Aquaculture breeds genetically modified fish to increase the amount of biodiversity in the population.
(B) Aquaculture reduces the number of fishing operations in an area.
(C) Aquaculture produces large amounts of seafood for human purchase and consumption year-round.
(D) Aquaculture requires large bodies of water for its operations.
(C) Aquaculture produces large amounts of seafood for human purchase and consumption year-round.
Where is there aquaculture around us?
Cape Cod & Boston
Which of the following is the best example of an economic approach to reduce overfishing for a fish species with a declining population?
(A) The federal government sets a catch limit (per person or per boat) for the species and imposes a tax on any extra fish that are caught.
(B) A conservation agency creates marine parks where the area is a no-catch zone for the species so that the species can recover and population size can increase.
(C) The state government introduces a subsidy for large fishing companies to help them afford to hire more crew members.
(D) An educational group produces signs and video clips to encourage individuals to buy locally caught seafood and to avoid eating big fish like tuna and shark.
(A) The federal government sets a catch limit (per person or per boat) for the species and imposes a tax on any extra fish that are caught.
Which of the following best describes why understanding a watershed and its boundaries is important in designing housing developments along a river?
Responses
A: The water contained in a watershed is more likely to become polluted if the soil has high permeability, so it is important to locate all point sources to reduce contamination.
B: Watersheds provide habitats for hundreds of marine species, so it is important to protect their feeding and nesting sites when designing housing for humans.
C: Watersheds provide space for cultivating land to produce food and other products, so it is important to avoid locating a housing development on the most fertile land.
D: Surface water and stormwater runoff will drain downstream within the watershed boundaries, so it is important to understand the flow of water through the watershed.
D: Surface water and stormwater runoff will drain downstream within the watershed boundaries, so it is important to understand the flow of water through the watershed.
Which is a point source of pollution?
(A) Farm runoff
(B) A sewage treatment plant
(C) Strong runoff
(D) A suburban community
(E) A harbor
(B) A sewage treatment plant
Which of the following is a direct economic advantage associated with aquaculture?
(A) Aquaculture breeds genetically modified fish to increase the amount of biodiversity in the population.
(B) Aquaculture reduces the number of fishing operations in an area.
(C) Aquaculture produces large amounts of seafood for human purchase and consumption year-round.
(D) Aquaculture requires large bodies of water for its operations.
(C) Aquaculture produces large amounts of seafood for human purchase and consumption year-round.
Which of the following scenarios best explains the concept of the tragedy of the commons?
(A) Fish farming, a type of aquaculture, produces fish through selective breeding to produce a cheap source of protein, reducing the fishing pressure on wild stock fish.
(B) A collapse of the fishing industry leads to a loss of fishing-related jobs, which will have negative consequences on the economy.
(C) Declines in the fish population lead to a decline in the population of fish predators, affecting the entire food chain.
(D) Fish are shared resources, and as the fishing industry competes for the fish, the resource extraction is no longer sustainable.
(D) Fish are shared resources, and as the fishing industry competes for the fish, the resource extraction is no longer sustainable.
Which of the following best describes legislation that could be used to address problems with overfishing?
(A) The Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES ) uses trade rules to protect commercially valuable species.
(B) The Clean Water Act regulates the discharge of pollutants in surface waters.
(C) The Resource Conservation and Recovery Act (RCRA) provides guidelines for the management of aquatic resources.
(D) The Delaney Clause of the Food, Drug, and Cosmetic Act regulates the harvesting of fish species for
(A) The Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES ) uses trade rules to protect commercially valuable species.
Which of the following should be included in a watershed map to best determine the non–point source of a pollutant, such as fertilizer, found in a river?
Responses
A: The total volume of groundwater in the aquifer
B: The total area and the average yearly precipitation of the watershed
C: The land use upstream of the river and water quality indicators in streams that run downstream into the river
D: The total volume of surface water of the river and the land use downstream of the river
C: The land use upstream of the river and water quality indicators in streams that run downstream into the river
Which type of pollution is most likely to be present at a coal mining site in rural Virginia?
Water pollution
How is economic growth a benefit of aquaculture?
It creates jobs and supports local economies, especially in coastal areas.
What is the difference between Bioaccumulation and Biomagnification?
biomagnification refers to the dramatic increase of chemical build up when you move up the food chain, compared to bioaccumulation being the build up over time in a single organism.