53-int&popecoloutl

53-int&popecoloutl - b. interspecific c....

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Biology 3 Lecture: Intro to Ecology: Population Ecology (SBM9: Ch 53) ©2011 copyright Marta D. de Jesus I. What is ecology? factors 1. biotic 2. abiotic environmental science II. Populations A. size affected by B. density C. dispersion 1. geographic range 2. patterns a. clumped b. uniform c. random III. Models of Population Growth A. Exponential growth model 1. math N = t can be written as: N = t natality mortality
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more sophisticated version dN = dt growth rate dN = dt 2. results 3. differences in r when b = d 4. in reality r = B. Logistic growth model carrying capacity = K K - N = K - N = K equation changes to: dN = dt “growth curve” P. caudatum data Extreme: Is there any way around this?
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IV. Factors influencing population size A. density-dependent factor 2. competition a. intraspecific
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Unformatted text preview: b. interspecific c. interference/contest competition d. exploitation/scramble competition B. density-independent factor C. chaotic patterns V. Demography A. rate of population increase depends on: 1. age distribution 2. sex distribution 3. generation time B. reproductive pattern a. iteroparous b. semelparous C. 2 general strategies of population growth (M. Cody, 1960s) 1. r strategists 2. K strategist D. life tables E. survivorship curves 3 general patterns a. Type I b. Type II c. Type III d. real examples 1) Drummond phlox 2) herring gull F. life is a set of trade-offs VI. Metapopulation VII. Human populations A. entire world B. affected by C. overpopulation consumption overpopulation ecological footprint...
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This note was uploaded on 01/17/2012 for the course BIOL V04 taught by Professor De-jesus,m during the Fall '08 term at Ventura College.

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53-int&popecoloutl - b. interspecific c....

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