Lecture 20 notes

Lecture 20 notes - We are now presiding over a biodiversity...

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We are now presiding over a biodiversity crisis - a rapid decrease in Earth’s great variety of organisms. Conservation biology is a goal-driven science that seeks to counter the biodiversity crisis. There are over 1.5 million species “known to science” and between 10- 200 million total What is happening and why should we care? Biodiversity includes Genetic diversity , within and between populations Species diversity Ecosystem diversity Biodiversity, while valuable for its own sake, also provides food, fiber, medicines, and ecosystem services. Human activities threaten diversity at all levels . Habitat destruction, introduced species, and overexploitation are the major threats to biodiversity. Habitat destruction is the single greatest current threat to biodiversity Introduced species can disrupt communities by competing with or preying on native species. Overexploitation of wildlife by harvesting has threatened various animal and plant species Photosynthesis moderates global warming
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Lecture 20 notes - We are now presiding over a biodiversity...

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