Ch Community Ecology pp

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Ch. 21.2 Community Ecology pp.403-405 Species richness = count of the different species populations found in a community Species diversity = balance of those different species Combination of how many different species, and how many individuals in each population of species Ch. 21.2 Community Ecology pp.403-405 What are the numbers in the community?

Ch. 21.2 Community Ecology pp.403-405 What is the richness and diversity of communities 1 and 2? Ch. 21.2 Community Ecology pp.403-405

Ch. 21.2 Community Ecology pp.403-405 What is the richness and diversity of communities 1 and 2? Species Richness of 1 = 4 Species Richness of 2 = 4 Ch. 21.2 Community Ecology pp.403-405

Ch. 21.2 Community Ecology pp.403-405 What is the richness and diversity of communities 1 and 2? Species Diversity of 1 is good or high. Species Diversity of 2 is poor or low. Ch. 21.2 Community Ecology pp.403-405

Ch. 21.2 Community Ecology pp.403-405 Species-Area Effect = on average larger areas have more species present

Ch. 21.2 Community Ecology pp.403-405 Species Interactions: Increased species richness often helps to stabilize the community: A balance is established among the organisms No one organism becomes dominant Predators can control prey organisms that might otherwise out-compete the other prey organisms how wolves change rivers Ch. 21.2 Community Ecology pp.403-405