No QOD we have much to do. Get out your homework and be ready to move on

Competition Use or defense of a LIMITING RESOURCE Not the necessarily direct Ex) if one rabbit simply eats a patch of a limited food plant before another rabbit does, then they are competing with one another even if they never directly interact Ex) if one rabbit physically denies another rabbit access to food this is also competition

Competition Competition is only one of many interacting biotic and abiotic factors Has the potential to alter populations, communities, and the evolution of interacting species

Limiting Resource A resource whose availability influences survival and reproduction This is all of the things we’ve already talked about: food, land, water, shelter, etc. It could also be another organism to mate with

Interspecific Competition A form of competition in which individuals of DIFFERENT species compete for the same resource in an ecosystem (ex. Food or living space) Ex) If a tree species in a dense forest grows taller than the surrounding tree species, it is able to absorb more sunlight. Since shorter tree species are shaded, they get less sunlight needed to live. Ex) Leopards and lions both feed on the same prey, so they can be negatively impacted by the presence of one another since they will have less food.

Intraspecific Competition Members of the SAME species compete for limited resources Ex) Two males fighting each other over a female Ex) Wolf packs fighting for food or territory

Limiting Factors Anything that can limit the growth of an organism or population Can be biotic or abiotic Limiting resources are ONE example

Density-dependent factors Anything that can alter or reduce a population based on HOW BIG the population is Usually biotic Not as much of an issue in small dispersed populations Denser a population the greater its mortality rate Ex) predation, competition, disease

Density Independent Factors Factors that do not become a greater or lesser problem when population size changes Usually abiotic Ex) Weather, natural disasters, and pollution. Ex) An individual deer may be killed in a forest fire regardless of how many deer happen to be in that area. Its chances of survival are the same whether the population density is high or low

Management Plan Key elements of the plan include: Recovery goals Livestock protection Wildlife protection Must use the following terms: Carryingcapacity, Interspecific/ intraspecific competition, Density dependent/independent factors (related to population growth) Keystone species