BIOL 1055 Lecture Notes - Lecture 8: Restoration Ecology, Overexploitation, List Of National Parks Of The United States
Document Summary
Cane toads didn"t eat beetles they were brought into eat, expanded in numbers, driven other frog/toads to near extinction where they are introduced. To be invasive, needs to cause a problem. Non-native: just chilling, not doing anything out of the ordinary. When species diversity is low, plant cover is low, diseases are at higher rates. Intrinsic (has value because it exists) ~ trillion for earth. Know pros and cons and how valuing nature as a commodity. Pros: helps to manage the assets, effective management, helps design conservation projects, quantify to balance human/ecosystem needs. Cons: there are other services provided by ecosystems that aren"t factored. Response to loss of biodiversity study/implement methods of protecting biodiversity. Species number on an island is influenced by immigration and extinction rate. Islands that are near have high immigration rate. Islands that are large have low extinction rates. Indicator species: status provides information about ecosystem health.