Community Ecology
Upcoming SlideShare
Loading in...5
×
 

Community Ecology

on

  • 622 views

 

Statistics

Views

Total Views
622
Views on SlideShare
441
Embed Views
181

Actions

Likes
0
Downloads
6
Comments
0

1 Embed 181

http://www.sophia.org 181

Accessibility

Categories

Upload Details

Uploaded via as Apple Keynote

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n

Community Ecology Community Ecology Presentation Transcript

  • Community Ecology Siberian Tiger• Types of species in communities • Native species • Non-native species (‘invasives’) • Indicator species • Keystone species
  • Native vs. Non-Native Zebra Mussel Species Kemp’s Ridley Turtle• Native species: organisms that normally live in a community• Non-Native species • Introduced or migrate into a community • Few natural predators, diseases, parasites • Often out-compete & replace native species • Most of our crops and livestock non-native
  • A Few Examplesof Non-Natives... Sheep Kudzu Wheat
  • Indicator Species• Serve as an early warning system• Presence or absence indicate the quality of an environment• Examples: fish: trout or amphibian: frog Rainbow Trout
  • Keystone Species Grey Wolf• Have large impact on community• Greater than size or Bull Shark abundance would indicate
  • Species Interaction:Interspecific vs.Intraspecific• Resource Partitioning Blackburnian • Robert MacArthur Warbler • Species competing for the same resources evolve traits that allow them to share • Warblers in Maine
  • Succession: Howcommunities changeover time • Primary vs. Secondary Succession
  • Succession: The theoretical plan...• Facilitation: pioneer species prepare the area for others• Inhibition: colonizers inhibit growth of some pioneers: shade and toxic substances• Tolerance: late succession species have high tolerance for shade, fire, etc. Mt. St. Helen’s
  • Succession: Thingsdon’t always go asplanned...• Intermediate Disturbance Hypothesis • Impact of fire, pests/disease, natural disasters (hurricane, tornado, flood) • >Biodiversity