- Settore: Government
- Number of terms: 30456
- Number of blossaries: 0
- Company Profile:
NOAA Coral Reef Conservation Program, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
The movement of energy through a community via feeding webs.
Industry:Natural environment
The soluble liquid fraction of a sample after centrifugation or precipitation of insoluble solids.
Industry:Natural environment
With refefence to oil spills, oil exposure concentrations based on the proportions of oil added to water (without actually measuring how much oil was ultimately mixed into the water).
Industry:Natural environment
A bone in the roof of the mouth of fishes. The palatine is cartilaginous in some primitive bony fishes.
Industry:Natural environment
A diving mode independent of surface air supply in which the diver uses open circuit self-contained underwater breathing apparatus which supplies air or breathing gases at ambient pressure.
Industry:Natural environment
A line used to survey the distribution of organisms or substrate across a given area. Sample plots or points are established along the transect for collecting data.
Industry:Natural environment
A plant that grows partly or wholly in water whether rooted in the substrate or floating without anchorage, as the water hyacinth; an aquatic plant.
Industry:Natural environment
A type of natural selection that removes individuals from one end of a phenotypic distribution and thus causes a shift in the distribution. The frequency of an allele is changed in a constant direction, either toward or away from fixation for that allele. Directional selection occurs when individuals at one phenotypic extreme have an advantage over individuals with more common phenotypes.
Industry:Natural environment
An external layer of secreted cuticular material in many Anthozoa. The term is synonymous with "cuticle." In woody plants, the periderm is a protective secondary tissue produced by the cork cambium .
Industry:Natural environment
