Lec_17_S07

Lec_17_S07 - Community Ecology Species Interactions...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
Community Ecology Species Interactions Community Structure Species Diversity
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Key Concepts • Interactions between species, competition and consumption, have two basic outcomes: affect distribution and abundance, they are agents of natural selection • Species assemblages change over time • Species diversity is higher in the tropics than at the poles
Background image of page 2
Community • Interacting species, within a defined area • Looking at the scale between biomes and populations • Look at species interactions as a + of - interactions
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Classifying species interactions • Competition • Consumption • Mutualism • Commensalism
Background image of page 4
Competition • Interspecific • Intraspecific • Darwin made initial observations about competition and how it might be responsible for shaping certain species’ characteristics • Understanding the meaning of niche
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Competitive Exclusion Principle • It is not possible for species with the same niche to coexist • Fundamental Niche • Realized Niche • Mechanism of competition depends on the species and resources involved Fig. 53.5
Background image of page 6
Complete exclusion Difference between the Fundamental niche Realized niche Strong Weak
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Competition Exists when there is niche overlap Can result in changes in niche use
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/24/2008 for the course LS 1 taught by Professor Thomas during the Spring '05 term at UCLA.

Page1 / 36

Lec_17_S07 - Community Ecology Species Interactions...

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online