Population Distribution
Predation Effects Population
Total Population: 1965-2006
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Polar Bear Facts
Polar bears are the top predator in the arctic Weigh around 800-1200 pounds 6-9 feet tall Insulation allows them to live in extreme temperatures Food can be hard to find due to the increasing climate preventing ice pack formation and delaying predation. Since the time without hunting ability can last 3-4 months, polar bears typically overeat to increase fat reserves during April through July so they do not become unhealthy Females mate around age 5, males mate around age 6. Often find multiple mates Spend summer onshore due to lack of sea ice Threats: climate change, overharvesting, toxic pollution, oil and gas Habitat: on coasts, near islands, on sea ice. Tundra regions because they prefer extreme climates Polar bears hunt, live, breed, and give birth using sea ice. These are ecosystems inhabited by plankton and other organisms that provide a source of nourishment Polar bears hunt, live, breed, and give birth using sea ice. These are ecosystems inhabited by plankton and other organisms that provide a source of nourishment Species Type
Population Size
Population Density
Population Age Structure
Carrying Capacity
Logistic Growth Rate
Intrinsic Growth Rate
Metapopulations
Density-Independent Factors
Density-Dependent Factors
Limiting Resources
Keystone Species Predation
Parastitism
Mutualism Commensalism
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