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biomass

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activated sludge process

activated sludge process  

A sewage and waste-water treatment. The sludge produced after primary treatment is pumped into aeration tanks, where it is continuously stirred and aerated, resulting in the formation of small ...
annual growth

annual growth  

The amount of new biomass produced by a plant per year, usually measured as above‐ground production.
biological productivity

biological productivity  

The amount of organic matter, carbon, or energy content that is accumulated in a given area over a given period of time. Usually expressed in terms of weight per unit area per unit time (grams per ...
biosphere

biosphere  

The whole of the region of the earth's surface, the sea, and the air that is inhabited by living organisms.
carbon cycle

carbon cycle  

The movement of carbon through the surface, interior, and atmosphere of the Earth. Carbon exists in atmospheric gases, in dissolved ions in the hydrosphere, and in solids as a major component of ...
carbon dioxide

carbon dioxide  

A colourless, odourless gas which is the fourth most abundant component of the air in the homosphere, amounting to about 0.035 per cent by volume. It is released by volcanoes, part of the source ...
carbon monoxide

carbon monoxide  

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Overview Page
A colourless almost odourless gas that is very poisonous. When breathed in it combines with haemoglobin in the red blood cells to form carboxyhaemoglobin, which is bright red in colour. This compound ...
carbon-based resource

carbon-based resource  

The amount of recoverable fossil fuel and biomass that can be used to produce fuel.
composition

composition  

The relative proportion of space or biomass that is accounted for by each species or system component in a given area.
conversion

conversion  

The change of mass into energy, for example converting a fuel (such as gasoline, coal, or biomass) into heat or electricity.
dry mass

dry mass  

The mass of a biological sample after the water content has been removed, usually by placing the sample in an oven. The dry mass is used as a measure of the biomass of a sample.
ecological pyramid

ecological pyramid  

Graphical representation of the trophic structure and function of an ecosystem. The first trophic level, of producer organisms (usually green plants), forms the base of the pyramid, with succeeding ...
ecosystem services

ecosystem services  

Processes or materials such as clean water, energy, climate regulation, and nutrient cycling that are naturally provided by ecosystems. Also known as ecological services.
energy source

energy source  

Any material that is used to produce energy, including fossil fuels (coal, oil, gas), nuclear (fission and fusion), and renewables (solar, wind, geothermal, biomass, hydroelectric).
forest

forest  

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Overview Page
Subject:
History
An area of vegetation in which the dominant plants are trees; forests constitute major biomes. Temperate forests have adequate or abundant rainfall and moderate temperatures. They may be dominated by ...
greenness

greenness  

The amount of living material (biomass) in vegetation.
gross primary productivity

gross primary productivity  

The total rate of photosynthetic production of biomass. Contrast net primary productivity.
harvest method

harvest method  

A productivity measuring technique, most commonly used for estimates of primary productivity, especially in situations in which predation is low (e.g. among annual crops, on certain heathlands, in ...
herb

herb  

1 A herbaceous plant, i.e. a seed-bearing plant that does not form hard woody tissue. Compare forb.2 A plant with medicinal or culinary uses. Culinary herbs are usually plants whose leaves are used ...
latitudinal diversity gradient

latitudinal diversity gradient  

Most groups of plants and animals have more species in the low latitudes than in the high latitudes. There are many possible explanations for this and many different opinions on the relative merits ...

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