Ecology. the amount of living matter in a given habitat, expressed either as the weight of organisms per unit area or as the volume of organisms per unit volume of habitat.
Energy. organic matter, especially plant matter, that can be converted to fuel and is therefore regarded as a potential energy source.
the total number of living organisms in a given area, expressed in terms of living or dry weight per unit area
vegetable matter used as a source of energy
Our Living Language : When biologist J.B.S. Haldane was once asked if the study of life on Earth gave him any insights into God, he replied jokingly that his research revealed that God must have “an inordinate fondness for beetles.” Haldane’s comment is based on the fact that there are more beetle species—almost 400,000 now known—than any other animal species. Beetles are just a fragment of the Earth’s biomass, the matter that makes up the Earth’s living organisms. Insects alone—which comprise almost one million known species and perhaps millions yet to be discovered—create an amazing amount of biomass. The number of individual insects is about 10 quintillion (10,000,000,000,000,000,000). Insects probably have more biomass than any other type of land animal. In comparison, if the weight of the Earth’s human population were added up, the biomass of the insect population would be 300 times as great. Biomass also refers to the organic material on Earth that has stored sunlight in the form of chemical energy. Biomass fuels, including wood, wood waste, straw, manure, sugar cane, and many other byproducts from a variety of agricultural processes, continue to be a major source of energy in much of the developing world. There are many who advocate the use of biomass for energy as it is readily available, whereas fossil fuels, such as petroleum, coal, or natural gas, take millions of years to form in the Earth and are finite and subject to depletion as they are consumed.
Note: The term biomass is most often encountered in discussions of sources of energy, as biomass can be used to supply energy needs directly (as fuel wood, for example) or indirectly (by being converted to alcohol; see gasohol).
Biological Investigations of Marine Antarctic Systems and Stocks
a complex biotic community characterized by distinctive plant and animal species and maintained under the climatic conditions of the region, especially such a community that has developed to climax. noun a major ecological community, extending over a large area and usually characterized by a dominant vegetation See formation (sense 6) n. biome (bī’ōm’) A large […]
Medicine/Medical. the study of the action of external and internal forces on the living body, especially on the skeletal system. the development of prostheses. Biology. the study of the mechanical nature of biological processes, as heart action and muscle movement. Contemporary Examples The Extinction Parade: An Original Zombie Story by Max Brooks Max Brooks January […]
the scientific study of the effects of natural or artificial atmospheric conditions, as temperature and humidity, on living organisms. noun the study of the effect of weather conditions on living organisms biometeorology (bī’ō-mē’tē-ə-rŏl’ə-jē) The study of the relationship between atmospheric conditions, such as temperature and humidity, and living organisms. Biometeorology encompasses several areas of study, […]
pertaining to biometry. pertaining to, noting, or using a person’s unique physical and other traits for the purposes of identification and security: a biometric system; biometric readers; a biometric passport. Contemporary Examples A Centrist Gets Fighting Mad Mark McKinnon October 12, 2010 Wanna Fly? Give Us a Fingerprint. Jacob Siegel March 10, 2014 How Space […]