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

Sample size n o density narea surveyed o growth dn

This preview shows page 4 - 6 out of 10 pages.

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)
Image of page 4
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
Image of page 5
Image of page 6

You've reached the end of your free preview.

Want to read all 10 pages?

  • Spring '16
  • Holyoch
  • Ecology,  Natural

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes