環(huán)境生態(tài)學(xué)chapter-展示頁
2024-10-25 14:32本頁面
【正文】 reases because the same species are encountered again and again. The speciesarea curve: Figure Preserving 50% of total habitat area often leaves about 90% of the original species remaining alive Extinction Species extinction: Ecological extinction: a species has bee so rare that it has essentially no role or impact on its ecosystem a species has died out in a local area Change physical environment: disruption Examples Drain swamp, toxic pollution Change biological environment: new species 3. Overhunting 4. Secondary extinctions New predator Bigg
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