BIOL 1200 Midterm: Exam 4 Study Guide Part 4
Document Summary
Definition of ecology: how organisms interact with each other and their environment. Order/classification of ecology: organismal, population, community, ecosystem, landscape, global. Refer to why are species absent from certain areas question above). Population: a group of individuals of the same species that live in the same area and interbreed. Population demography: a study of population parameters over time, particularly birth and death rates. How can populations be affected: immigration and births add to population, emigration and deaths remove from population. Read concept 40. 5: monitoring population growth/ change in population size over some time interval, change in population size=births-deaths, n/ t= b-d (where n is population size and t is time), n/ t= r (r is births-deaths). Exponential population growth vs. logistic population growth: exponential (j-curve): n/ t = rn; density independent, logistic (s-curve): n/ t = rn ((k n)/ k); density dependent; k=carrying capacity.
