Ecological Networks Nathan Crum. Ecology Study of the interactions between organisms and their...
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Transcript of Ecological Networks Nathan Crum. Ecology Study of the interactions between organisms and their...
Ecology
• Study of the interactions between organisms and their environment
• Study of ecosystems– Ecosystem- web/network of relationships of
organisms to each other and their environment
Other Interactions
• Competition– Interspecific and Intraspecific
• Mutualism• Parasitism• Commensalism
Niches
• Resource Partitioning- differentiation of niches allowing species to coexist– Difference between fundamental and realized
niche– Leads to character displacement
Keystone Species
• Larger effect on ecosystem than population size would suggest– Ex. Sea Otters and Starfish
The Fluidity of Ecosystems
• Biomanipulation- altering the density of high level consumers to control the density of organisms in lower trophic levels