Substrate: the surface on which an organism lives
Subtidal Zone: region below the mean low tide mark
Succession: progressional change in the species composition of an ecosystem over time as the organisms alter the environment ...
substrate (in biology)
Substance material on which an enzyme acts.
Surface on which an organism grows or to which is attached.
subthreshold dose
See non-effective dose ...
substrate
(1) That which is laid or spread under; an underlying layer, such as the subsoil. (2) The substance, base, or nutrient on which an organism grows.
Substrate: A layer of material beneath the surface soil.
Surface water: Water above the surface of the land, including lakes, rivers, streams, ponds, floodwater, and runoff.
T ...
substrate
The surface with which an organism is associated; often refers to lake or stream beds.
substrate sampling ...
substrate 1) The layer of organic matter or medium that supports the growth of organisms. 2) The substance, usually a protein, acted upon by an enzyme. 3) A foundation or supporting layer.
Substrate level phosphorylation The synthesis of the energy storage compound adenosine triphosphate (ATP) from adenosine diphosphate (ADP) using organic substrates without molecular oxygen.
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Artificial Substrate -
(1) A device placed in the water for a specified period of time that provides living spaces for a multiplicity of organisms; for example, glass slides, concrete blocks, multi-plate samplers, or rock baskets; ...
Scour pools are formed by scouring, or removal through hydraulic forces, of substrate from the stream channel, and deposition of that material elsewhere.
Substrate In soil studies, the substrate is any combination of materials that provide support, water retention, aeration or nutrient retention for plant growth.
A stick of gum in its wrappers is a good substrate to test, as it is a familiar object composed of parts that are very different in their compositions, and therefore their biodegradability.
A succession of plant communities is associated with the change in substrate and microenvironment. Thus, floating and submerged aquatic plants occupy the shallow waters near the shore, slowly accumulating wind-blown soil and decaying organic matter.
For purposes of this classification wetlands must have one or more of the following three attributes: (1) at least periodically, the land supports predominantly hydrophytes; (2) the substrate is predominantly undrained hydric soil; ...
Cometabolism: The simultaneous metabolism of two compounds, in which the degradation of the second compound (the secondary substrate) depends on the presence of the first compound (the primary substrate).
The pattern is created by opaque or transparent glass fused to the substrate glass material under high temperatures. The substrate is heat strengthened or tempered to prevent breakage due to thermal stresses.
Media
stones, pebbles or plastic that provides a substrate for the growth of a film of microorganisms in wastewater treatment; plastic, ceramic or metal shapes or surfaces that improve gas-liquid contact in gas scrubbing ...
Microarray: A tool used to sift through and analyze the information contained within a genome. A microarray consists of different nucleic acid probes that are chemically attached to a substrate, which can be a microchip, ...
Habitat Indicator: A physical attribute of the environment measured to characterize conditions necessary to support an organism, population, or community in the absence of pollutants; e.g. salinity of estuarine waters or substrate type in streams ...
A reaction in which microbes transform a contaminant even though the contaminant cannot serve as an energy source for the organisms. To degrade the contaminant, the microbes require the presence of other compounds (primary substrates) that can ...
Grazer - scrapers Aquatic animals that graze the organic layer of algae, microorganisms and dead organic matter on stones and other substrates.
 See also: Water, Organic, Air, Environment, Soil
  
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