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Unformatted text preview: RNR 1001 Final study guide Wildlife Conservation o-protecting, preserving, managing, studying wildlife o-wildlife mgmt. -hunting -habitat protection -population regulation -non-game enhancement ex. songbirds -Animal damage control (ex. Nutria bounty) -Law enforcement o-effective wildlife conservation requires extensive knowledge of: The niches of organisms inhabiting terrestrial and aquatic ecosystems Habitat structure, succession, and responses to human disturbance The values, attitudes, and demographics of human user groups o Important Niche char. Food Habitats - quality and quantity Herbivores carnivores H2O Water mgmt. in arid regions Cover - habitat structure Critical for determining effects of habitat alteration Reproduction - habitat structure Maintenance of nesting and denning habitat (ex. Turtles on beaches) o Population Dynamics (life history strategy) Natality (# offspring/ 1000 females per year), mortality, immigration, emigration Population growth potential Response to harvest/ habitat alteration Natality Whales have low Natality b/c only 1 calf per 6 years Rabbits, rats, frogs, and waterfowl have high Natality Can be closely tied to population size and nutrition, resulting in a phenomenon known as inversity. l l #fawns l l__________ adult density Whales-7yrs (subject to pop. Crash) Rodents- few weeks Maximum Age- # of reproductive events, lifetime production of offspring Ex: humans- high max. age Marine turtles=150-200 yrs. Rodents and rabbits= low max. age Growth rates and parental care - related to pop. densities, food abundance, and survival rates Imp. for predator escape (ex. megapods-lay eggs and leave) (condors- chicks stay w/ parents 2 yrs.) (whales- good parents) Mortality rates and sources - need to be identified and quantified Hunting mortality may be particularly imp. must be concerned w/ critical pop. size (pop. below which species wont recover) sources of mortality predation weather hunting disease-type E botulism- Great Lakes-killed waterfowl o Wildlife managers must also consider org. responses to stress- particularly from anthropogenic source pollution clear cutting agriculture 2. Wildlife Management o effective mgmt. requires extensive education of wildlife professionals and the gen. public wildlife natural ecosystems mgmt. objectives and practicesmgmt....
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- Spring '08