Ch 53 - 0 1 2 3 Chapter 53 Community Ecology Understand...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 53 – Community Ecology 0. Understand difference between competitive exclusion, niche partitioning and character displacement 1. Understand how prey adapt to escape predators, and what top down control is 2. Understand how communities change during succession 3. Know trends in diversity with area, latitude and how islands are a natural experiment in what controls diversity Definitions 0. Assemblage of all populations in an area, emergent characteristics are diversity and relative abundance Look first at pair wise interactions between species Table 53.1 Interspecific Interactions Competition 0. Competition is when at least one species suffers decreased survival or reproduction 1. Competitive exclusion principle says no two species can use the same niche 2. Competition changes use of resources (niche partitioning) or 3. over evolutionary time, changes morphology (character displacement) to limit competition 4. Experimental studies have shown that intertidal barnacles compete Figure 53.3 Resource partitioning in a group of lizards Figure 53.4 Character displacement: circumstantial evidence for competition in nature Figure 53.2 Testing a competitive exclusion hypothesis in the field
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/02/2009 for the course BIOL 1202 taught by Professor Gregg during the Spring '08 term at LSU.

Page1 / 4

Ch 53 - 0 1 2 3 Chapter 53 Community Ecology Understand...

This preview shows document pages 1 - 2. Sign up to view the full document.

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