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Chgapter 7 aquatic biomes
Terms in this set (25)
What are the environmental functions of wetlands?
purifying water, provides a breeding ground for water fowl, reduces run off and flooding, traps excess carbon
Why are estuaries very productive ecosystems because they receive fresh nutrients?
rivers and oceans
What causes most coastal pollution in the United States?
peoples sewage and industrial waste
What adaptation prevents phytoplankton from sinking into deep waters?
Where are swamps commonly found?
flat poorly drained
Where are the majority of marine organisms found?
shallow coastal waters
What occurs as streams flow down a mountain to flatter ground, rivers generally become?
wider, warmer, and slower
What are the general characteristics of types of aquatic biomes?
lakes rivers and wetlands
What are threats to ocean ecosystems?
pollution, oil spills, overfishing, tangling in nets, nutrients, runoffs, industrial waste, algae blooms
What determines the types of organisms found in a pond or lake ?
ssunlight, presence of nutrients, and temper of water
In the _____ zone, life is diverse and abundant.
In the _____ zone, the water is cool and dark.
Most pollutants that enter estuaries break down over time, yet they are still considered a problem because?
the volume of pollutants are greater than ability to break them down
What mainly distinguishes nekton from benthos?
nectos are_free swimming, benthos stay on the bottom
What are the characteristics of estuaries?
freshwater meets salt water, water is brackish, act as breeding grounds for many species of species, and usually partially enclosed
Which organism produces most of the food in an aquatic ecosystem?
What is the arrangement of organisms in the open ocean is determined by ?
where the sunlight and nutrients are
What are the characteristic of wetlands?
purifying water, breeding ground for water foul, reduces flood, and runoff produces carbon
Why does an estuary function as a mineral trap ?
the freshwater and ocean water mixes and settles out
How are coral reefs, the intricately shaped rocklike structures, formed ?
the calcium carbonate skeltons of corals-tiny marine organisms
What are the two main types of freshwater wetlands?
swamps and marshes, bogs
Compare and contrast the characteristics of salt marshes and mangrove swamps?
both found on the coast lines, both endangered by humans, provide habitats for wildlife, differ by marshes are covered in water manegrove swamps are covered in mangrove trees, salt marshes are found everywhere
Which aquatic ecosystem has the highest level of salinity? lowest? moderate?
marine biomes have the highest, eustaries have a moderate amount, freshwater biomes
What are threats to coral reefs?
oil spills, sewage, and human contact
Why doesn't photosynthesis occur in deep ocean water.
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