Sample size n o density narea surveyed o growth dN over dT difference in

# Sample size n o density narea surveyed o growth dn

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Sample size: (n) o density, (n)/area surveyed o growth, dN over dT, difference in population over difference in time o life history strategy, semelparity; a single reproductive event, example salmon iteroparity, multiple reproductive events per lifetime, ex. humans o intraspecific interactions, o age structure, the pyramids that indicate the growth of the individuals based on population averages and ages o mortality rate, death rate o fecundity, potential reproductive capacity of an individual o Reproductive strategies semelparity; a single reproductive event, example salmon iteroparity, multiple reproductive events per lifetime, ex. humans Survivorship curve graph building and types o Log 10 scaling, use Log base 10 to build a curve in order to identify the survivorship curve Type 1: individuals are more likely to die at an old age Type 2: the chances of dying are equal at all ages Type 3: younger individuals are more likely to die Be able to calculate the following: o Population density, sample size divided by area sampled o Population size (using mark and recapture method)
BIO 181 Exam 1: Ecology (Unit 8) Study Guide N=(sn)/x, Estimated population equals the number of individuals caught in the first sample multiplied by the number of individuals caught in the second group divided by the number of individuals caught in both samples. Day 5 (Chapter 45.3-5) Calculate growth of populations (know what the variables represent and how to use the equations) o Variables = r, N, K o Exponential growth = dN/dT = rN Difference in population divided by time equals intrinsic growth rate. o Logistic growth = dN/dT = rN([K-N]/K) K in the carrying capacity of an environment, and N in population size Understand the difference between density-dependent limiting factors and density-independent limiting factors o Know examples of each Understand the difference between K-selected species and r-selected species and their respective life history strategies o K: Mature late, longevity, more parental care, more competitive ability, fewer but larger offspring o r: mature quickly, less longevity, decreased parental care, less competitive ability, more offspring, small offspring o Understand adaptations that lead to species being either type Describe human population growth both at the global as well as national levels, o Globally seems to be an exponential growth, why? We cheat nature with shelter and technology. In China there was even a ban on having more than 2 children. In the U.S. there are less people being born as opposed to other countries. Understand the different types of population pyramids and what it indicates about the growth of the population o Narrow means rapid growth o Pyramid is slow o Curve is stable Day 6 (Chapter 45.6) Identify types and examples of interspecific interactions o Predation, one animal eats another o herbivory, eats plants o competition, two individuals compete for the same resources o facilitation, when one species makes it possible for another species to exist in the same community o

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• Spring '16
• Holyoch
• Ecology,  Natural

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