UP 205 Study Guide - Midterm Guide: Rainbow Trout, Sockeye Salmon, Imperata Cylindrica

• School: University of Illinois
• Department: Urban and Regional Planning
• Course: UP 205
• Professor: Schneider Daniel

Document Summary

Predator and prey: cottony cushion scale, predator: cryptochaetum and, vedalia (ladybug):(cid:15910) (cid:15911, control them when their number go above economic threshold, ddt killed vedalia"s enemies so that their population went up again. Later under control again: predations: process by which one individual benefits at the expense of another by consuming all or part of it, types of predators, predator: Find and kill the prey: consume a lot of individuals during its lifetime, parasite, don"t kill the prey but consume part of it, only eat a few during it"s lifetime. E. g. bed bug; mosquitos: consume a few people"s blood several times but won"t kill the person: parasitoid: Eats many preys (plants: doesn"t kill either. Chippewas and anglers: overfishing, rights, community, sport/spear (regulation) Then divide safe stock to chippewa and anglers. E. g. ice retreatment succession sequence: xerophytic mosses grow to provide soil (they can grow on rock no need for soil) dryas: provide nutrients willow alder: provide nutrient spruce.