<p>STUDY GUIDE FOR TEST ON ECOLOGY</p><p>You should know: * indicate possible math questions what is ecology the levels (in order) of ecological study and their definitions, including landscape ecology difference in biotic and abiotic factors zones of freshwater and marine aquatic biomes difference in eutrophic and oligotrophic lakes eutrophication- causes of, problems causes terrestrial biomes - general characteristics and threats how to determine density of a population * know formula for calculating density based on mark/recapture method * different types of dispersion, which is most common what life tables show * survivorship curves difference in exponential and logistic pop. growth curves, interpret and use formulas * carrying capacity K and R selected parameters density-dependent and density-independent factors in population growth age structure graphs - how to interpret * what is a niche, difference in realized and fundamental niches, competitive exclusion principle, resource partitioning in niche competition predatory/prey defenses, predator-prey graphs, lag time * types of interactions keystone species, dominant species species richness vs abundance ecological succession, types island biogeography - what influences species richness, island equilibrium model feeding relationships - trophic structures, what limits levels, food chains, webs, energy, biomass pyramids, interpret diagrams * primary productivity, difference in net and gross productivity * limiting factors in ecosystems, in aquatic and terrestrial ecosystems highest/lowest productivity areas cycles: N, water, C, phosphorus, study charts biodiversity - why necessary, threats to introduced species, fragmentation, habitat loss, etc. how impact ecosystems</p>