BIOL 120 Study Guide - Final Guide: Forage Fish, Keystone Species, Bioaccumulation
31 Jan 2014
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Document Summary
How does the earth"s curvature and tilt produce seasons and climate. Above and below the equator the suns rays are less intense, oblique. Season in higher and lower latitudes occur due to tilt of earths on its axis and the orbit of the earth around the sun. Solar irradiance: the amount of light energy per unit area. Intertidal: under during high tide, above during low tide, harsh environment plants and animals must be able to anchor. Open ocean: heavily exploited, species diversity declined 50% in past 50yrs. Abyssal plain: deep dark ocean, cold, rich in life, energy from hydrogen sulfide from volcanic vents. Eutrophication: high nutrient levels from fertilizer runoff lead to blooms of algae grow which depletes oxygen and causes fish kills. K: pop. size limited by carrying capacity, stable, organisms are larger, long living r: pop. size limited by reproductive rate, unstable, organisms are smaller, short living. Population- all the individuals of a species in an area.
