Class Notes (1,100,000)
CA (640,000)
York (40,000)
BIOL (2,000)
BIOL 1001 (300)
Lecture 53

BIOL 1001 Lecture Notes - Lecture 53: Aposematism, Herbivore, Interspecific Competition


Department
Biology
Course Code
BIOL 1001
Professor
Tamara Kelly
Lecture
53

This preview shows page 1. to view the full 4 pages of the document.
March 27th Lecture Note Community
Ecology
Interspecific Interactions
Mutualisms (+/+)
Mutualism is a common form of symbiosis
Both partners benefit, but not real cooperation
Just exploit each other for own benefits
All species interact with other species
- The are predator/prey or parasite/host
- +, -, 0 interactions-> forms complex web of associations
Interactions influence population size & distribution of other spp
Niche multi-dimensional habitat encompasses:
- Sum habitat requirements required for a spp survival & reproduction -> defined by both
abiotic (physical) & biotic factors
- Ecological role spp plays in a community
Niche Overlap-> Competition
Niche: habitat requirements
Niche: range of resources a species can use, conditions it can tolerate
When interspp competition occurs, there are 2 possible outcomes:
1. Competitive Exclusion (local extinction_
2. Niche Differentiation
Competitive Exclusion
How to Study Competitive in Nature: a tale of two barnacles
In natural habitats, adult chthamalids & balanus don’t coexist
Can live adjacent- b/c of niche differentiation
Interspecific interactions can limit natural populations
Everyone looses with competition b/c there are less resources that an individual recvieved on
average
find more resources at oneclass.com
find more resources at oneclass.com
You're Reading a Preview

Unlock to view full version