25 - CommunityEcology 11/03/200900:09:00 KeyConcepts

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

View Full Document Right Arrow Icon
Community Ecology 11/03/2009 00:09:00 Key Concepts Interactions among species, like competition, and consumption, have 2 main  outcomes: o They affect the distribution and abundance of the interacting species o They are agents of natural selection and thus affect the evolution of  interacting  species Key Terms Community,  Introduction  A biological community consists of interactingspecies, usually living within a  defined area how do communities develop and change over  Species Interactions Because the species in a community interact almost constantly, the fate of a  particular population nay be tightly linked to the other species that share its  habitat Biologists analyze interactions among species by considering the effects on  the fitness of the individuals involved A relationship between two species that provides a fitness benefit to members  of one of the species  3 broad categories of interaction between species are -/-, +/-, or +/+  relationships a fourth category is a +/0 relationship called commensalisms, in which the 
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 11/16/2009 for the course BIOL BIOL taught by Professor Johnson during the Spring '08 term at Aberystwyth University.

Page1 / 5

25 - CommunityEcology 11/03/200900:09:00 KeyConcepts

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