CSU FW 104 - Basic Ecology Part 2 (4 pages)

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Basic Ecology Part 2

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Basic Ecology Part 2


Community, Symbiotic Relationships, Competition, Ecosystem, Food Chains, Food Webs, Energy

Lecture number:
Lecture Note
Colorado State University- Fort Collins
Fw 104 - Wildlife Ecology and Conservation (GT-SC2)

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FW104 1nd Edition Lecture 5 Outline of Last Lecture I Ecology II Levels of Organization III What s a Species A Classification IV Habitat A Food B Water C Cover D Space E Oxygen F Special Needs V Welfare Factors VI Niche VII Principles A Principle of Competitive Exclusion B Limiting Factor Principle Law of Minimum C Principle of Tolerance Limits OR Shelford s Law of Tolerance Outline of Current Lecture I Community A Species Interactions in the Community 1 Predation Prey 2 Parasitism 3 Mutualism 4 Commensalism 5 Competition B Ecosystem C Food Chains D Food Webs E Energy Current Lecture I Community These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute Definition of Community assemblage of populations species that interact with each other in same environment VL coexisting interdependent populations of different species A Species Interactions in the Community Co evolution species that interact over long time period influence each other s traits through natural selection Ex plant and pollinators predator and prey co evolutionary arms race including Red Queen Hypothesis 1 Predation Prey Symbiotic Relationship Natural selection favors the strongest Some predator offenses ambush alligators stalk mountain lion and cooperative hunting whales orcas wolves Some prey defenses speed agility armor and weaponry Ex monarch butterfly get poison from milkweed Negative feedback system results in cycles with a lag time 2 Slow Can be stable as host not killed Parasitism Symbiotic Relationship form of predation evolutionary long as the population is off 3 Relationship Both species benefit Mutualism Symbiotic Ex video for Ants vs Acacia trees Ants benefit the tree from protecting it from vines from growing on it and from other insects that could eat the tree The Acacia tree benefits the ant by providing the ant nectar for food cover and pods to lay their eggs in 4 Commensalism Symbiotic

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