Biogeochemical Cycles

Biogeochemical Cycles

The flow of elements from the environment through living things and back to the environment.

Reservoirs

Places where elements are accumulated or held.

Assimilation

Transfer of elements from the abiotic into the biotic.

Release

Transfer of elements from the biotic back into the abiotic.

Hydrological Cycle

Also known as the Water Cycle; involves the movement of water in various forms through the environment.

Evaporation

The process of turning from liquid into vapor.

Transpiration

The release of water vapor from the leaves of plants.

Carbon Cycle

The cycle of carbon through the environment, which is essential for building organic compounds.

Decomposition

The process of breaking down organic materials, releasing carbon back into the environment.

Nitrogen Cycle

The cycle of nitrogen through the environment, crucial for the manufacture of amino acids and nucleic acids.

Nitrogen Fixation

The process by which certain bacteria convert atmospheric nitrogen (N₂) into ammonia (NH₄+).

Phosphorus Cycle

The cycle of phosphorus through the environment, necessary for the manufacture of ATP and nucleic acids.

Eutrophication

The process where water bodies receive excess nutrients that stimulate excessive plant growth.

Leaching

The loss of soluble substances from the soil due to water movement.