NCSU Bio 181 Exam 2 Prep, Questions & answers. 100% Accurate. VERIFIED.

NCSU Bio 181 Exam 2 Prep, Questions & answers. 100% Accurate. VERIFIED. ecology - -the study of how organisms interact with each other in their environment areas of ecological study - -organismal, population, community, ecosystem density dependent limiting factors - -limiting factors that are affected by the size of a population density dependent limiting factor examples - -competition for resources, predation, parasitism, and disease intraspecific competition - -competition between members of the same species interspecific competition - -competition between members of different species density independent limiting factors - -limiting factors that are not influenced by population size density independent limiting factor examples - -climate, pollution, and rapid habitat loss ΔN/Δt = rN(K-N)/K R = rate of population increase N = population size T = time K = carrying capacity - -logistic growth model ΔN/Δt = r = (b-d) + (i-e) N = population size R = rate of population increase T= time B = birth rate D = death rate I = immigration rate E = emigration rate - -exponential growth model k-selected species - -Species that produce a few, often fairly large offspring but invest a great deal of time and energy to ensure that most of those offspring reach reproductive age. r-selected species - -Species that reproduce early in their life span and produce large numbers of usually small and short-lived offspring in a short period. Type 1 survivorship curve - -few offspring, live long life (developed country) Type 2 survivorship curve - -constant death rate Type 3 survivorship curve - -high death rates for the young, then a slower death rate for survivors (developing country) Interference competition - -individuals interact directly with one another by physical force or intimidation Exploitative/Resource competition - -organisms compete indirectly through the consumption of a limited resource Mechanisms to avoid competition