Spreadsheet Exercises in Ecology and Evolution Therese M. Donovan U.S.G.S. Vermont Cooperative Fish and Wildlife Research Unit University of Vermont and Charles W. Welden…

1. land degradation in arid, semi-arid and dry subhumid areas resulting from various factors, including climate variation and human activities" (UNCCD 1995).…

1. Artic eco-system By Claudia Tremble 2. A eco-system also known as a food web is a biological community of interacting organisms and their physical environment. (Dictionary,…

1. Tourism & Hospitality Geography Climate & Tourism 2. Objectives Understand the climatic elements and explain how these affect the various types of recreational…

1. Community Interactions 2. Community Interactions• Powerfully affect an ecosystem• Include:– Competition– Predation– Symbiosis 3. Competition• When organisms…

1. Community Interactions 2. QUICK REVIEW What is community? What is population? 3. Community Interactions Powerfully affect an ecosystem Include: Competition Predation Symbiosis…

Slide 1Ecology Slide 2 Biodiversity Slide 3 Slide 4 Habitats Slide 5 Alterations to Habitats Slide 6 Cycling of Materials in Ecosystems Make a list of anything you have used…

Slide 1Changes in Ecosystems: Ecological Succession Slide 2 Definition: Natural, gradual changes in types of species living in area; can be primary or secondary Succession…

Slide 1Human Impact on Environment, Conservation, Biodiversity Slide 2 What is Succession? A. Ecosystems are constantly changing 2.As change occurs, older inhabitants usually…

Slide 1Communities in Transition Slide 2 Ecological Succession – The replacement of one community by another until a climax community is reached May take hundreds or thousands…