- Industry: Government
- Number of terms: 30456
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NOAA Coral Reef Conservation Program, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
Gray's Reef comprises one of the largest nearshore sandstone reefs in the southeastern United States.It is located 32 kilometres (17.5 nautical miles) off Sapelo Island, Georgia. Designated in 1981, the Gray's Reef National Marine Sanctuary boundaries protect 17 square miles of open ocean. Sandstone outcroppings and ledges up to ten feet in height separate the sandy, flat-bottomed troughs in a reef that combines temperate and tropical flora and fauna. The rocky platform, some 60 to 70 feet below the surface, is covered by a carpet of attached organisms and is known locally as a "live bottom habitat." Gray's reef is not a coral reef. It is a consolidation of marine and terrestrial sediments (sand, shell, and mud) which was laid down as loose aggregate between 6 and 2 million years ago.
Industry:Natural environment
Group containing all multicellular animals with bilateral symmetry; the name has no taxonomic status.
Industry:Natural environment
Groups of neurosecretory cells in the eyestalks of crustaceans that secrete a molt-inhibiting hormone.
Industry:Natural environment
Heterotrophic eukaryotic unicellular organisms that belong to the kingdom Protista.
Industry:Natural environment
High-resolution (1-2 metre resolution) imaging satellite; the world's first commercial satellite for imagery of this type.
Industry:Natural environment
If the temperature is kept constant, the volume of a given mass of gas is inversely proportional to the absolute pressure.
Industry:Natural environment
In a statistical hypothesis test, the P value is the probability of observing a test statistic at least as extreme as the value actually observed, assuming that the null hypothesis is true. This probability is then compared to the pre-selected significance level of the test. If the P value is smaller than the significance level, the null hypothesis is rejected, and the test result is termed significant; the significance of a statistical test. P-values of less than 0.05 are generally considered to be an indicator that a statistical model is significant; a quantitative estimate of the probability that the observed difference between two groups could have happened by chance alone.
Industry:Natural environment
In all species of fishes, the older larger females produce more eggs than the younger smaller ones. In some species, the larger older females can produce exponentially greater quantities of eggs. The BOFFF hypothesis refers to this phenomenon.
Industry:Natural environment
In general, closely related species do not have identical ranges, but often their ranges are not very far apart. They are usually adjacent but separated by some kind of a geographic barrier, such as a mountain, desert, or river. A second Jordan's Rule is: fishes develop more vertebrae in cold environments than in warm ones.
Industry:Natural environment
In genomics, the DNA affixed to a microarray; a small piece of nucleic acid that has been labelled with a radioactive isotope, dye, or enzyme that is used to locate a particular nucleotide sequence or gene on a DNA molecule.
Industry:Natural environment
