An alien species is a species introduced outside its normal distribution.
Invasive alien species are alien species whose establishment
and spread modify ecosystems, habitats, or species.
(Source:
MA
A class of natural or man-made substances, such as penicillin, that kill or
inhibit the growth of some micro-organisms.
(Source: GreenFacts, based on CoRIS,
Glossary
The study of the chemical processes and compounds occurring in living
organisms.
(Source:
American Institute for Medical and Biological Engineering
Glossary
Biodiversity is a contraction of biological diversity. Biodiversity reflects the number, variety and variability of living organisms.
It includes diversity within species (genetic diversity), between species (species diversity), and between ecosystems (ecosystem diversity). (Source: GreenFacts)
A colorless, odorless, non-combustible gas, present in low concentrations in the air we breathe (about three hundredths of one percent by volume).
Carbon dioxide is produced when any substance containing carbon is burned. It
is also a product of breathing and fermentation. Plants absorb carbon dioxide
through photosynthesis.
(Source: The Pacific Forest Trust
Glossary
A substance, factor or situation that causes or induces cancer. (Source: GreenFacts )
The long-term fluctuations in temperature, precipitation, wind, and all other aspects of the Earth's climate.
It is also defined by the United Nations Convention on Climate Change as
“change of climate which is attributed directly or indirectly to human activity
that alters the composition of the global atmosphere and which is in addition to
natural climate variability observed over comparable time periods”
(Source:
CoRIS
glossary
The conversion of forested land to non-forested land as a direct result of
human activities.
(Source: Forest Carbon Accounting
Definitions
An approach to natural resource management which aims to sustain ecosystems to meet both ecological and human needs in the future. (Source: GreenFacts)
The benefits people obtain from ecosystems.
These include provisioning services such as food and water; regulating
services such as flood and disease control; cultural services such as spiritual,
recreational, and cultural benefits; and supporting services such as nutrient
cycling that maintain the conditions for life on Earth.
(Source:
MA
The complex system of plant, animal, fungal, and microorganism communities and their associated non-living environment interacting as an ecological unit.
Ecosystems have no fixed boundaries; instead their parameters are set to the
scientific, management, or policy question being examined. Depending upon the
purpose of analysis, a single lake, a
watershed, or an entire region could be
considered an ecosystem.
(Source:
US EPA
Glossary of Climate Change Terms
Hg. Mercury in its elemental (pure) form, that is, as a metal; hence the synonym metallic mercury. A shiny, silver-gray metal that is a liquid at room temperature. (Source: GreenFacts)
The increase in additions of nutrients [especially nitrogen and phosphorus] to
freshwater or marine systems, which leads to increases in plant growth and often
to undesirable changes in ecosystem structure and function.
(Source:
MA
The population or [total mass] of a fishery resource. Such stocks are usually
identified by their location. They can be, but are not always, genetically
discrete from other stocks.
(Source:
MA
Water that is not salty, for instance water found in lakes, streams, and rivers, but not the ocean. Also used to refer to things living in or related to freshwater (e.g., "freshwater fish"). (Source: GreenFacts)
Greenhouse gases are those gaseous constituents of the atmosphere, both natural and anthropogenic, that absorb and emit radiation at specific wavelengths within the spectrum of infrared radiation emitted by the Earth’s surface, the atmosphere and clouds.
This property causes the greenhouse effect.
Water vapour (H2O), carbon dioxide (CO2),
nitrous oxide (N2O), methane (CH4), and
ozone (O3) are the primary greenhouse gases
in the Earth’s atmosphere. Moreover there are a number of entirely human-made
greenhouse gases in the atmosphere, such as the halocarbons and other
chlorine and bromine containing substances,
dealt with under the Montreal Protocol. Beside CO2, N2O and CH4, the
Kyoto Protocol deals with the greenhouse gases
sulphur hexafluoride (SF6),
hydrofluorocarbons (HFCs) and perfluorocarbons (PFCs).
(Source:
IPCC
Glossary
Water beneath the Earth's surface in the spaces between soil particles and
between rock surfaces.
(Source:
ATSDR
Glossary of
Terms
Metallic elements with high atomic weights, e.g. mercury, chromium, cadmium, arsenic, and lead.
They can damage living things at low
concentrations and tend to
accumulate in the food chain.
(Source:
US EPA
Drinking Water
Glossary
Chemical messengers that help our body do different tasks. Hormones are
produced by the endocrine glands and then
sent all over the body to stimulate certain activities. For example, insulin is
a well-known hormone that helps our body digest food. Hormones regulate our
growth, digestion, reproduction and sexual function.
(Source:
EMCOM
Endocrine disruptors
glossary
A state of complete physical, mental, and social well-being and not merely the absence of disease or infirmity.
The health of a whole community or population is reflected in measurements of
disease incidence and prevalence, age-specific death rates, and life expectancy.
(Source:
MA
Glossary
A general name for several species of halophyte (plant that grows in soils that have a high content of various salts) belonging to different families of plants (including trees, shrubs, a palm tree and a ground fern) occurring in intertidal zones of tropical and subtropical sheltered coastlines and exceeding one half meter in height.
The term is applied to both the individual and the ecosystem, the latter of
which is termed mangal.
(Source:
CoRIS glossary
Instruments of environmental policies in which a change in technology,
behaviour or products is encouraged through financial incentives (either
subsidies, taxes, price differentiation or market creation).
(Source: Environmental Programme for the Danube River Basin
Glossary
Methane is a colorless, flammable, nontoxic gas with the chemical formula CH4.
This gas is formed naturally by the decomposition of organic matter. Wetlands, livestock and energy are the main sources of methane emissions to the atmosphere, where it acts as a greenhouse gas.
Methane is also a major component of natural gas. It is mainly extracted from geological deposits for fuel and industrial uses (Source: GreenFacts )
Organic matter originating from plants and animals present in natural (untreated or raw) waters, for example, in lakes, rivers and reservoirs. (Source: GreenFacts)
Nitrous oxide is a colourless non-flammable gas with the chemical formula N2O.
This gas is naturally emitted by bacteria. The livestock sector and industry are the main anthropogenic sources of nitrous oxide emissions.
When released into the atmosphere it acts as a powerful greenhouse gas. (Source: GreenFacts)
The approximately 20 chemical elements
known to be essential for the growth of living organisms, including nitrogen,
sulfur, phosphorus, and carbon.
(Source:
Millennium Ecosystem Assessment
Glossary
Arsenic compounds containing carbon. They are mainly found in sea-living organisms, although some of these compounds have also been found in species living on land. (Source: GreenFacts)
Persistent organic pollutants (POPs) are chemical substances that persist in the environment, bioaccumulate through the food web, and pose a risk of causing adverse effects to human health and the environment. This group of priority pollutants consists of pesticides (such as DDT), industrial chemicals (such as polychlorinated biphenyls, PCBs) and unintentional by-products of industrial processes (such as dioxins and furans).
Persistent Organic Pollutants are transported across international boundaries
far from their sources, even to regions where they have never been used or
produced.
(Source:
European Commission
Environment DG
POPs
A toxic chemical product that kills
harmful organisms (e.g., insecticides,
fungicide, weedicides, rodenticides, acaricides).
(Source:
FAO
Glossary of biotechnology & genetic
engineering
Refers to the amount of disturbance or stress that an ecosystem can absorb and
still remain capable of returning to its pre- disturbance state.
(Source: GreenFacts, based on Millennium Ecosystem Assessment
A scientifically based process consisting of four steps:
A measure of the salt concentration of water.
(Source:
CoRIS
Glossary
Sewage refers to waste-water from homes and industry which is collected and carried away in sewers (pipes or tunnels). When raw waste-water is cleaned in treatment plants the waste product is sewage sludge, which can be used as a fertiliser under certain conditions or deposited in landfills. (Source: GreenFacts )
Individuals or groups that are affected by a decision and have an interest in
its outcome.
(Source:
TDM Encyclopedia
Glossary
A characteristic or state whereby the needs of the present and local population can be met without compromising the ability of future generations or populations in other locations to meet their needs.
"The United Nations Environment Programme (UNEP), established in 1972, works to encourage sustainable development through sound environmental practices everywhere. Its activities cover (...) the promotion of environmental science and information, to an early warning and emergency response capacity to deal with environmental disasters and emergencies."
See also UNEP.Net
"The World Business Council for Sustainable Development (WBCSD) is a coalition of 170 international companies united by a shared commitment to sustainable development via the three pillars of economic growth, ecological balance and social progress.
Our members are drawn from more than 35 countries and 20 major industrial sectors. We also benefit from a global network of 45 national and regional business councils and partner organizations located in 40 countries, involving some 1,000 business leaders globally.
The WBCSD's activities reflect our belief that the pursuit of sustainable development is good for business and business is good for sustainable development."
(Source: WBCSD website
This summary is free and ad-free, as is all of our content. You can help us remain free and independant as well as to develop new ways to communicate science by becoming a Patron!