competition l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Competition PowerPoint Presentation
Download Presentation
Competition

Loading in 2 Seconds...

play fullscreen
1 / 30

Competition - PowerPoint PPT Presentation


  • 185 Views
  • Uploaded on

Competition. Species can compete for two resources and can coexist when 2 conditions are met:. 1) The habitat must be such that one species is more limited by one resource and the other species is more limited by the other resource.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Competition' - kane


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
species can compete for two resources and can coexist when 2 conditions are met
Species can compete for two resources and can coexist when 2 conditions are met:

1) The habitat must be such that one species is more limited by one resource and the other species is more limited by the other resource.

2) Each species must consume more of the resource that more limits its own growth.

grime s c s r strategies
Grime’s C-S-R strategies
  • Competitive - plants such as perennial herbs, shrubs and trees typically have dense leaf canopies, high growth rates, low seed production and relatively long life spans
  • Stressful -stress-tolerant plants that often have small evergreen leaves, low growth rates, low seed production and long life spans
  • Disturbed environments - the plants are primarily Ruderals – plants which are usually small, grow rapidly, short life spans and produce many seeds
slide9

Competition in Nature –

the Birth of Experimental Ecology

Joe Connell

competitive release
Competitive Release
  • Competitive Release is a prediction from examining the competitive exclusion principle that in the absence of competition a species should expand its niche
slide18

Chalcophaps

stephani –

Stephen’s

Dove

character displacement
Character Displacement
  • Character displacement is a measurable physical difference between two species which has arisen by natural selection as a result of the selection pressure on one or both to avoid competition with each other - here we assume that environment is the same at all locations
slide22

Hydrobia ulvae

Hydrobia ventrosa

patterns like character displacement or competitive release can be caused by several things
Patterns like character displacement or competitive release can be caused by several things:
  • the pressure of current competition causes the pattern
  • competition which occurred in the past may have driven natural selection to cause the pattern we see today - "the ghost of competition past"
  • competition in the past eliminated a number of other species, leaving behind only those that were different in the use of habitat
  • the species may have evolved independently and in different ways and have never competed with each other
  • the species may differ in their niches, but not enough to coexist in a stable environment, however the environment varies and thus prevents competition from reaching its predicted end result
slide28

Blackburnian warbler

Cape May warbler

Black-throated green

warbler

Bay-breasted warbler

Yellow-rumped

warbler

ghost of competition past in israeli rodents
Ghost of Competition Past in Israeli Rodents

Gerbillus allenbyi

Meriones tristami