L11 ch 56 - Lecture 11: Chapter 56 Lecture Guide Population...

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Lecture 11: Chapter 56 Lecture Guide Population Ecology What is ecology? Ecology is the study of how organism’s interact with each other and the environment Areas of ecological study: Organismal-how they interact with their environment Population-interaction among organisms of a same species and the environment Community-same and different species interacting with the environment Ecosystem-how communities interact with the environment Landscape- The Environment Biotic components-living portion Abiotic components-non-living portion -sunlight, temperature, rainfall, climate and soil conditions Checks on Populations Density independent factors: (based on number of poplation) Disease Competition Intraspecific (within population) Interspecific (between populations) Predation Parasitism Resources such as water, food, habitat Density dependent factors: (doesn’t matter about number of population) Drought, freezes, floods, forest fires Pollution Rapid habitat loss What is a population? A group of individuals of the same species inhabiting the same area Population Ecology Defined How populations interact with their environment How and why the number of individuals changes over time The proportion of males to females How old the individuals are How likely they are to reproduce or die
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This note was uploaded on 10/28/2011 for the course BIO 181 taught by Professor Milton during the Fall '08 term at N.C. State.

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L11 ch 56 - Lecture 11: Chapter 56 Lecture Guide Population...

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