-Factors that determine a biome: Temperature and percipitation
-Attributes of deserts: low percipitation, high in mineral content, located leeward side of rain shadow
-Characteristics of grasslands: richest soil in the world, benefits from fire, human impact includes agriculture and rangeland
-Characteristics of tundra: Low vegetation, short growing season, cold winters, water is locked up in snow and ice
-Difference between alpine vs. arctic tundra: Alpine has more solar radiation, hot in summer, lots of winds and gravely soil
-Tropical rain forests: warm all year round, soil is thin, acidic and nutrient poor. Human impacts include logging (agriculture, wood harvesting) mining (erosion, water containment) 1-1/2 acres are destroyed every second
-Taiga coniferous forests are used for paper
-Deciduous forests are used for hard wood like furniture, cabinets
-Damaging corral reefs: 1. high salinity 2. pollution 3. overfishing 4. tourism 5. global warming
-Factors determining biodiversity: Sunlight and oxygen
-Mangrove forests: Tropical equivilent of salt marshes. Their interlacing roots are breeding grounds and nurseries for many important fishes
-Nekton: Larger, more strongly swimming organisms like fishes turtles and whales
-Neritic Province: area from shoreline to depth of 200 meters. Enough light penetrates to support photosynthesis
-Oceanic Province: area in open ocean w/ water depths greater than 200 meters. Organisms adapt to dark environment.
-Wetland soils are rich in nutrients. Swamps are wetlands w/ trees and marshes are wetlands w/out trees
-Zones of the lake:
-Littoral zone: most productive zone, photosynthesis is greatest
-Limnetic zone: open water beyone littoral zone, extends down as far as light penetrates, microscopic organisms
-Profundal zone: Beneath limnetic zone, shallow lakes don’t have
Chapter 17
-Biodiversity: The number, variety, and variability of Earth’s organisms. Important b/c humans