Aquatic Ecosystems Flashcards
What does water flow through?
through freshwater systems and marine and coastal aquatic systems that interact extensively with one another.
What does regions do where overall use of fresh water (for agriculture, industry, and domestic use) exceeds the annual available supply?
requiring groundwater depletion or diversion of water from other regions.
How much does agriculture account for total water usage?
70%
What happened to the wetlands during 1970-2015?
The area of natural wetlands declined about 35%.
The area of human-made wetlands increased.
What impacts the water quality in many natural wetlands?
Pollution
Oligotrphic water body?
Few nutrients, clear water
Eutrophic water body?
Too much nutrient, algae bloom.
How many river are dammed?
Most major rivers are dammed. Worldwide, there are more than 45,000 large dams greater than 15 m high.
Where does plastics and other debris collect in the oceans?
The five gyres
How does plastics affect oceanic life?
Entangling wildlife
Microplastics form
Organisms ingesting plastics
What are most deep sea fish consuming?
Plastic
What fish are critical links in marine food webs?
Lantern fish, plastics bioaccumulate
What has happened to the oil spill into the oven waters today?
It has decreased.
Commercial fishing fleets use several methods of capture. What are the result of these methods?
Industrial fishing can deplete fish stocks rapidly.
After rising for decades, what has happened to world fisheries capture production?
It has stalled.
