A swampy place or marshy inlet.
A wetland dominated by trees.
A miniature valley with steep sides cut by running water and through which
water ordinarily runs only after rainfall and is generally an obstacle to farm machinery and is
too deep to be obliterated by ordinary tillage.
Organisms that must feed on other organisms in order to get the energy-rich
food they need
Soil material, rock fragments, or both, moved by creep, slide, or local wash
and deposited at the base of steep slopes.
A chemical compound that aids root growth.
Organisms that directly use the sun’s energy to make their own food.
Fine-grained soil with particles less than .002 millimeters; plastic when wet,
but hardens when dry
Enrichment of water due to fertilization, sewage, effluent or other waters that
carry a high plant-nutrient component which speeds up the ecological aging
of a body of water.
Lake type used to describe bodies of water characterized by low amounts of
nutrients in proportion to their total volume of water.
Sedimentary deposits (like a delta) in fresh water.
The most abundant group of minerals in the earth’s crust.
Rock formed by the cooling of magma, or molten rock, from within the Earth.
Material deposited in lake water and exposed when the water level is
lowered or the elevation of the land is raised
Referring to or derived from living organisms; in chemistry, any compound
containing carbon.
The dark organic part of soil formed from decaying plant and animal matter;
often called topsoil.
The downward movement of water in soil.
The unconsolidated organic and mineral material in which soil forms.
An area that is regularly wet or flooded where the water table stands at or
above the land surface for a least part of the year.