Biology 2483A Lecture 22: Topic 22.docx
2 Jan 2015
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Passenger pigeons travelled in dense flocks, were quickly exploited to the point of extinction. Introduction habitat of many species. with extinction: as the human population has grown, and our use of resources has increased, we have destroyed the, a biodiversity crisis has developed. The world conservation union lists 16,913 species as threatened. The scientific study of phenomena that affect the maintenance, loss, and restoration of biodiversity. Conservation biology is an integrative discipline that applies the principles of ecology to the protection of biodiversity. The scientific method calls for objectivity collection and interpretation of data without bias. Biodiversity is declining globally unknown: rates of extinction are difficult to measure because the number of species on earth currently is, extinction rates determined from the fossil record are used as background rates. Tuesday november 25, 2014: overall, extinction rate in the twentieth century was 100 to 1,000 times higher than the background rate.
