BIOE 103 – Population & Soil and Conservation Biology Lecture Notecards

These flashcards cover key concepts related to population, soil, conservation biology, and biodiversity as discussed in the lecture.

Total Fertility Rate (TFR)

Average number of children per woman. Replacement level is approximately 2.1.

Demographic Transition Model

A model that describes the stages of population growth in relation to birth and death rates.

Ecological Succession

Gradual change in ecosystems, which includes primary succession starting from bare rock and secondary succession following a disturbance.

The Tragedy of the Commons

A situation in which shared resources are overused due to individual self-interest.

Soil Loss Causes

Factors such as water, wind, deforestation, and overgrazing that contribute to soil erosion and degradation.

Biodiversity

The variety of life in the world or in a particular habitat or ecosystem.

Genetic Drift

A process where random events affect the gene pool of small populations, leading to reduced genetic diversity.

Inbreeding Effects

The mating of closely related individuals, which reduces genetic diversity and can increase harmful traits.

Endangered Species Act (ESA)

U.S. legislation that protects endangered and threatened species and their habitats.

Wilderness Act

Legislation that designates certain lands as wilderness, requiring them to be preserved in their natural state.

Smart Growth

Urban planning that aims to reduce sprawl and promote walkable neighborhoods and mixed-use development.

Conservation Easements

Legal agreements that permanently restrict land development to protect its ecological value.