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Over long time scales most materials that cycle through the 4 compartments end up in the oceans
Food and service that aren't found any other way. Good include food, clean water, clean air
Result in damage to ecosystems, overuse of fertilizers, and reduced profitability of agriculture in developing
Conservation Biology is guided by 3 principles which are
1. Evolutions is the process that unites all of biology
2. The ecological world is dynamic
3. Humans are apart of ecosystems
"Biodiversity" has meanings
1. Amount of genetic variation
2. Species richness
3. Ecosystem diversity
We derive enormous psychological benefit from
Watching and interacting with other species [Aesthetic benefits]
Problems with predicting how many/which species will be extinct
1. We don't know how many species live on Earth
2. We don't know where all the species live
3. It's difficult to determine when a species is actually becoming extinct
4. We rarely know all the connections among species
Human Activities that threaten survival of other species
1. Habitat destruction
2. Introduction of exotic species
4. Climate change
Brown tree snake arrived on
Guam in air cargo in the 40's and has caused 15 different types of bird's extinctions
Methods are being developed to restore degraded habitats to a more natural state
Between-Habitat diversity, change in species composition from one community to another
Gamma Diversity equals
Alpha diversity of each community combined with beta diversity from other communities
The species-area relationship
More species the bigger the area is, the smaller the area the less species it can fit
Island Biogeography was developed to
Explain why islands have fewer species than from that of the mainland
Rates of immigration and extinction are influenced by 2 factors
1. Distance from the species pool
2. Size of the island
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