Vocabulary: Bays or semi-enclosed bodies of brackish water that form where rivers enter the ocean
Estuaries
100
What is the definition of wetlands?
Land surface is covered with water at least for part of the year.
200
Vocabulary: Livestock are destroying the plants of the southern Sahara. Without plants the land cannot retain what little rainfall there is and it becomes more barren.
Overgrazing
200
What vegetation is in a boreal forest?
Pines, hemlock, spruce, cedar, and fir with soem deciduous trees mixed in
200
Vocabulary: Carried out by algea or free floating plants.
Photosynthesis
200
Vocabulary: Costal wetlands flooded regularly or occasionally by seawater
Salt Marshes
200
What is a swamp?
Wetlands with trees
300
How long does it take for desert soils to recover?
Decades.
300
Tigas experience
Extreme cold and short summers limit the growth rate of trees
300
What oceans systems are classified by depth and locations to shore?
Benthic, Pelagic, and Littoral zone.
300
True or False? Are estuaries and salt marshes nutrient rich and biologically diverse?
True.
300
Why do the majority of wetlands have high productivity?
Water is usually shallow enough to allow full sunlight penetration
400
What kind of moisture do deserts have?
Low moisture (less than 30 cm, 12 in per year)
400
Where are most boreal forests?
Siberia, Canada, and Northwestern U.S.
400
True or False? Cold water holds less oxygen than warm water so productivity is often high in cold oceans such as the North Atlantic.
False. It is cold water productivity.
400
How much of marine life depends on estuaries for spawning and development?
2/3
400
What stores runoff?
Trap and filter water.
500
Animals in deserts
Nocturnal and able to conserve water
500
What are boreal forests called?
Northern Coniferous Forest
500
What do upwelling currents do?
Circulate nutrients from the ocean floor back to the surface.
500
What is the biggest threat for tidal environments?
Sewage from coastal cities.
500
What are bogs and fens?
Waterlogged soils that tend to accumulate peat. Bogs fed by precipitation, while fens are fed from groundwater. Nutrient poor with low productivity, but many unusual species.