- Industry: Government
- Number of terms: 30456
- Number of blossaries: 0
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NOAA Coral Reef Conservation Program, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
The total amount of chemical energy fixed by the processes of photosynthesis minus the chemical energy lost through respiration; same as 'net photosynthetic rate'.
Industry:Natural environment
The National Oceanic and Atmospheric Administration (NOAA) is a federal agency within the US Department of Commerce that is dedicated to predicting and protecting the environment. NOAA's overall mission is to understand and predict changes in the Earth+s environment, protect life and property, provide decision makers with reliable scientific information, conserve and manage the Nation+s living marine and coastal resources to meet our Nation+s economic, social, and environmental needs, and foster global environmental stewardship. To achieve its mission, NOAA+s focus through 2008 will be on four mission goals:
1. Protect, restore, and manage the use of coastal and ocean resources through ecosystem-based management.
2. Understand climate variability and change to enhance society+s ability to plan and respond.
3. Serve society+s needs for weather and water information.
4. Support the Nation+s commerce with information for safe, efficient, and environmentally sound transportation.
Industry:Natural environment
A chemical agent which retards and prevents the reproduction and growth of algae.
Industry:Natural environment
A massive structure composed of clusters of oval, table-like mounds constructed by marine polychaete worms in the family Sabellariide. They consist of all sorts of sediments consolidated by a mucoprotein cement produced by the worm. This reef may start in the intertidal zone and extend into the subtidal zone. Some are in deeper water. Unlike the colourful and ornate coral reefs, worm reefs are drab, monotonous and rounded clusters, mounds and platforms that grow upward and outward from the durable substrate from which their colonies develop. Worm reefs offer several ecological benefits. They provide feeding and browsing grounds for a diverse community of marine organisms and an ideal home for attaching plants, sponges and shelter-seeking animals. Also, unlike coral reefs, worm reefs are not restricted to the tropics.
Industry:Natural environment
A statistical technique used to establish the relationship of a dependent variable and one or more independent variables .
Industry:Natural environment
Brown algae belong to the Division Phaeophycophyta, whose approximately 1,500 species are almost exclusively marine. They include the largest of the seaweeds and the kelps. The brown algae have chlorophyll a and c, as well as carotenes and xanthophylls, but the green chlorophyll coloration is masked by the brown and yellow pigments. Brown algae are among the largest photosynthetic organisms on earth. The largest kelps may grow to more than 60 metres in length, forming dense underwater forests in colder waters. Many microscopic brown algae grow as epiphytes on underwater vegetation, forming networks of branched filaments, or broad encrustations. All species are multicellular and do not form colonies. Their life cycles are complex, involving alternation of generations. In general, they are not free-floating organisms, but are attached to rock, coral, or other firm surfaces. Sargassum weed, however, is a floating brown algae that stays afloat by producing gas-filled bladders.
Industry:Natural environment
Having separate sexes. Individuals within the species contain only one or the other of male and female reproductive systems.
Industry:Natural environment
In taxonomy, the nominal species that is the name-bearing type of a nominal genus or subgenus.
Industry:Natural environment
Speciation when a single, widespread population is divided by (1) the emergence of an extrinsic barrier, (2) extinction of intervening populations, or (3) migration of some individuals into a separate region.
Industry:Natural environment
The elimination of undigested food materials from an organism.
Industry:Natural environment
