Ecosystems 

047 - Ecosystems
Paul Andersen explains how ecosystems interact with biotic and abiotic factors. He explains and gives examples of food chains and food webs. He shows how limiting factors eventually leads to logistic growth. Real data from Yellowstone Park is used to show how populations interact. He ends the podcast by showing how human impacts can eventually lead to changes within an ecosystem.
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Creative Commons Atribution License
All of the images are licensed under creative commons and public domain licensing:
2009, NOAA, Great Lakes Environmental Research Laboratory: Mason, Krause, and Ulanowicz, 2002-Modifications for Lake Ontario. Lake Ontario Food Web Based on: (2003). "Compartments Revealed in Food-Web Structure". Nature 426 (6964): 282--285. DOI:10.1038/nature02115. ISSN 0028-0836., 2009. NOAA Great Lakes Food Web Diagrams direct. commons.wikimedia.org/wiki/Fil....
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Image: Red_squirrel_with_nut.jpg, n.d. www.wikihow.com/Image:Red_squi....
MATERIALS, Terry Tollefsbol, NATIONAL CONSERVATION TRAINING CENTER-PUBLICATIONS AND TRAINING. Grizzly Bear in Yellowstone National Park Ursus Arctos Horribilis, August 31, 2005. U.S. Fish and Wildlife Service: commons.wikimedia.org/wiki/Fil....
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