Ecological Principles
This cycle is primarily conducted in soil and plants.
What is the phosphorus cycle?
The mass expansion of urban areas that rapidly destroys surrounding environments is called this.
What is urban sprawl?
These fires are controlled and created by experts to clear fire fuel.
What are prescribed burns?
Wetlands classified by woody plants, slow-moving water, and low oxygen soil are called this.
What is a swamp?
The maximum population size of a species a habitat can support is called this.
What is carrying capacity?
This law, created in 1948, focuses on maintaining clean air and water.
What is the Clean Water and Air Act?
Rainforests cover this percentage of Earth's surface.
What is 6%?
Decaying grass roots enrich the soil, making this biome's soil among the most fertile on Earth.
What are temperate grasslands?
This year saw the passage of the Duck Stamp Act, which funds wildlife refuges.
What is 1934?
This term refers to the number of deaths per 1,000 individuals per unit of time.
What is death rate?
This process describes the intake of oxygen to convert glucose into energy.
What is respiration
Breaking up habitats so they can no longer remain functional is known as this.
What is habitat fragmentation?
This invasive species destroys young trees and causes soil erosion in forest habitats.
What are feral hogs?
Wetlands protect freshwater quality by filtering this.
What is sedimentation?
This method of measuring populations records signs of animals, such as tracks and droppings.
What is the index of population size?
The first species to colonize an area in primary succession are known as this.
What are pioneer species?
Grasslands typically exist between these two types of habitats.
What are forests and deserts?
Grasslands cover this percentage of Earth's land surface.
What is 40-45%?
This percentage of freshwater is trapped in glaciers or underground aquifers.
What is 99%?
Fertility control is this type of method for managing wildlife populations.
What is non-lethal?
These are the positive ecological interactions between organisms.
What are mutualism and commensalism?
This act provides incentives for landowners to conserve grassland habitats.
What is the Farm Bill?
These evergreen trees dominate boreal forests.
What are coniferous trees?
These are the factors wetlands are classified by.
What are hydrological regime, vegetation cover, and landscape position?
This principle states that fish and wildlife belong to all North American citizens.
What is the Public Trust Doctrine?