BILD 3 Study Guide - Midterm Guide: Ecosystem Services, California Condor, Equilibrium Point
20 Apr 2016
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Latitudinal differences in solar intensity: solar radiation = higher at equator, earth"s tilt causes seasonal variation, air circulation, warm air rises then cools. Cool air falls: warm air holds more moisture. Large region of vegetation defined by characteristics of dominant plant. Regional effects on climate a: temp more extreme inland. Mediterranean-type ecosystems: occur in regions w/ cool wet winters and hot dry summers, produces scrub not forest c. Fire prone many species bloom after a fire: population growth rate: T: geometric growth rate: n(t) = n(o) t, exponential growth: n(t) = n(o)ert, doubling time: t = ln(2)/r, per capita growth rate: pcgr = (dn/dt)(1/n, decreases w/ increase in pop size f. Logistic growth: dn/dt = rn(k-n/k: when k=n, at carrying capacity. Density dependence: tendency for a population to increase when below equilibrium point, and decrease when below that level, factors limiting growth.
