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CH 22 SUSTAINING WILD SPECIES. IV. Extinction Threats from Habitat Loss A. Greatest threat is habitat loss, degradation and fragmentation Highest species.

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Presentation on theme: "CH 22 SUSTAINING WILD SPECIES. IV. Extinction Threats from Habitat Loss A. Greatest threat is habitat loss, degradation and fragmentation Highest species."— Presentation transcript:

1 CH 22 SUSTAINING WILD SPECIES

2 IV. Extinction Threats from Habitat Loss A. Greatest threat is habitat loss, degradation and fragmentation Highest species loss from rainforest deforestation, coral reef destruction, pollution in streams Disturbances come from:

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4 B. Problems with Habitat destruction 1. Decrease in pop size 2. increase edge effects, 3. creates barriers for species

5 V. Invasive Exotics How do they enter? Cost $137B year! Why a problem? Accidental Intros: fire ant, brown tree snake, asian tiger mosquito Deliberate intro? Solutions?

6 VI. Hunting/Poaching Trade=$20B yr Why? Case study: elephants VII. Pest/Predators -Exotic Pets -Role of climate change

7 VIII. LAWS 1975 CITES=152 countries and 900 species. Problems…. Lacey Act of 1900 ESA of NMFS and USFWS ID and list. Can’t trade, kill, collect, harm etc…must list and make recovery plan!

8 ESA: Habitat consv plans($ to relcoate, preserve), safe harbor agreements- restore,improve or maintain habitat! Which species get saved and how w/ ESA VIII. Santuaries(refuges,gene banks, bot gardens, &farms) Zoo’s and Captive breeding How? CA condor, black Footed ferret, tamarins

9 So which Endangered Species should we save????

10 X. Wildlife Management A.Management Hunting laws, quotas, Manag. Plans, Int. treaties B. Sport Hunting Pro’s/Con’s C. Manage Waterfowl-flyways, wildlife refuges, wetland protection XI. H.I.P.P.O


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