4-29-08 notes

4-29-08 notes - Notes Conservation biology integrates these...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: April 29, 2008 Notes Conservation biology integrates these fields: • Ecology • Evolutionary biology • Physiology • Molecular biology • Genetics • Animal behavior-Goal of conservation biology is to conserve biological diversity at all levels The biodiversity crisis • Scientist described 1.8 million species • Between 10-200 million undescribed species • Not evenly distributed • Tropical forests have highest number of species and are undergoing widespread destruction o Example: between 1990 and 2005, Brazil cleared over 42 million hectares, an area the size of California • The 6 th mass extinction on Earth? o Current extinction rates estimated to be 1000 times higher than in the past 100,000 years Human activities threaten biodiversity • Rates of species extinction are difficult to determine under natural conditions o Because humans impact nearly everything o If we don’t know how many species there are to begin with, we don’t know how many we are really driving away o We don’t always know where to look to see if they are actually extinct •...
View Full Document

This note was uploaded on 04/26/2009 for the course EBIO 1220 taught by Professor Demig-addams during the Spring '07 term at Colorado.

Page1 / 3

4-29-08 notes - Notes Conservation biology integrates these...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online