Species Interactions wildlife ecology .docx

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Department
Natural Resources Conservation
Course
NRC 261
Professor
Todd Fuller
Semester
Spring

Description
Species Interactions Wildlife ecology  Allopatric­ species distributions do not overlap Sympatric­live in same place or overlap Texas ground squirrels all live in same area, but have different habits  Black tailed prairie dogs­short grass lands Rock squirrels­rocky areas Ground squirrels­ long grass  Neutralisms(0/0)­ co exist does not matter, don’t interact (bats and mice) Commensalism (+/0)­Ospeckers on backs of rhinos Predation (+/­) lions and Wildebeests Parasitism(+/­) Lamprey and lake trout Mutualism(+/+) living together both of them benefit ants living in thorns, ants protect  thorns  Cooperation­(+/+) badgers and coyotes hunt together Competition(­/­) hyena and lion­ same food source  Competition exclusion principle­ the probability that two or more competing species co  exist in the same area is inversely proportional to their niche overlap Same niche in same area is not possible­ always competition  Responses to completion  Numerical consequences­ reproduction and survival density and distribution Going to be consequences to resources Functional changes­ morphological and behavioral  Reduce niche overlap Solutions to competition Morphological­ character displacement  Evolution of a physical difference that allows Finches on Galapagos island­ beak shape Behavioral­interference competition  Direct displacement of competitors through aggression          ­Exploitation competition­one species makes more efficient use of a  common resource Same habitat b
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