The variety of biotic factors and species in an ecosystem

Living things in an ecosystem

Non-living things in an ecosystem (includes rocks, soil, climate, etc.)

Habitat loss, extinction and threatened species, human development

The long-term ability to maintain an ecosystem

The development of a brand new ecosystem from bare rock (after glacier or volcano)

The repair of an ecosystem to equilibrium after it is disturbed

1. Bare Rock (after volcano or glacier)

Pioneer species

A stable, mature community that undergoes little or no change in species over time; the final stage of succession

the changing sequence of communities that live in an ecosystem during a given time period

An environmental factor that prevents a population from increasing

Place where an organism lives

A very small specialized habitat, such as the space under a rock.

first species to populate an area during succession

A community of organisms and their abiotic environment

A group of ecosystems with similar climates and organisms

A group of organisms that are closely related and can mate to produce fertile offspring

group of individuals of the same species that live in the same area

A state of balance

When rocks break apart by mechanical or chemical processes

When rocks break apart by physical (mechanical) processes.

When water gets into the cracks of rocks and freezes. Also known as freeze-thaw effect.

Rocks break apart and erode through chemical changes. Example: Acid rain, oxidation (rust), dissolution

Made from weathered rock, humus, air, and water

Any kind of weathering by living organisms. Examples: Animals burrowing, lichens, and tree roots

Moving, removal, carrying away of rock layers

Causes MORE erosion than when moving slowly

Glaciers, rivers, wind, and gravity

The dropping of sediments after erosion occurs. Examples: Deltas, sand and soil at the edge and mouth of rivers, Sand dunes

Which agent of erosion would have the greatest impact in the state

Our ecoregion in Dallas / Fort Worth

An area of land that flows over and through on its way to a larger body of water.

animals eat away plants, on steep slope, farming, and where trees are removed.

Water can flow easily through this type of rock.

Water cannot flow through this type of rock.

Water that does not soak into the ground and flows across the surface of the earth.

Water than flows into the ground and is sometimes stored in permeable rocks.

Dropped sediment at the end of a river that is fan shaped.

The level of the water underground or sometimes it can go above ground.

Austin, Round Rock

East Texas, high in water resources, 32-50 in. of annual rainfall, forested area, mainly pine trees, Lumber WETTEST REGION

16-30" rain. irregular droughts. grassland with trees and shrubs. Laredo. Warm year round. Sub Region of Coastal Plains

The highest elevation in Texas. Very dry and lots of shrubs. Amarillo

Only desert and mountains in Texas. Very Dry. El Paso

Wastes and chemicals get into rivers, lakes, and oceans. Some wastes come from sewer systems. Rain washes these chemicals into the water. Some can hurt and kill fish, plants, and animals. Oil spills can cover algae, plants, and fish. This makes them die.

the level below which the ground is saturated with water.

a mobile, destructive vortex of violently rotating winds having the appearance of a funnel-shaped cloud and advancing beneath a large storm system.