Chapter 6 - Populations

Coastline

________ and Oceans- Ocean fisheries are being exploited.

exponential growth rate

Occurs when in a new environment, the population density of an organism increases slowly at first, then increases rapidly, reaching a(n) ________ like the J- Curve, but then slows down to zero when the population stabilizes.

Survivorship

________ curves show age distribution characteristics of species, reproductive strategies, and life history.

Freshwater

________- Demand for ________ is soaring as the population grows.

Biodiversity

Earths ________________ is crucial to the continued vitality of agriculture and medicine.

Type I Survivorship Curve

________________________- Reproduction happens early in life.

growth rates

Organisms have adapted to maximize ________ in environments that lack limits or to maintain population size.

Urbanization

________ decreases the economic incentives for large families.

20th century

The ________ showed the biggest growth in world population in human history.

Global Climate Change

________- Earths surface is warming due to greenhouse gases, largely from burning fossil fuels.

Birth rates

________ are higher due to high mortality rates.

Reproductive success

________ is measured by how organisms are able to grow up and reproduce.

Forests

________ provide $ 400 Billion a year and are vital to maintaining healthy ecosystems.

Population Ecology

Studies the dynamics of species’ populations and how these populations interact with the environment.

Biotic Potential

Maximum reproductive capacity of an organism under optimum environmental conditions - generally expressed as a percentage.

Carrying Capacity

Refers to the number of individuals that can be supported in a given area sustainably.

Type II Survivorship Curve

Individuals at all age categories have uniform death rates.

Type III Survivorship Curve

Great numbers of offspring and reproduce for most of their lifetime.