環(huán)境生態(tài)學(xué)chapter(編輯修改稿)
2024-11-12 14:32 本頁面
【文章內(nèi)容簡介】 ncreases 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 Bi
教學(xué)課件相關(guān)推薦
鄂ICP備17016276號(hào)-1