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Glossary definitions

The IPBES glossary terms definitions page provides definitions of terms used in IPBES assessments. Some definitions in this online glossary have been edited for consistency. Please refer to the specific assessment glossary for citations/authorities of definitions. 

We invite you to report any errors or omissions to [email protected].

Concept Definition Deliverable(s)
brackish water

Water that has more salinity than fresh water, but not as much as seawater. It may result from mixing of seawater with fresh water, as in estuaries, or it may occur in brackish fossil aquifers. Technically, brackish water contains between 0.5 and 30 grams of salt per litre—more often expressed as 0.5 to 30 parts per thousand (‰), which is a specific gravity of between 1.005 and 1.010. Thus, brackish covers a range of salinity regimes and is not considered a precisely defined condition.

Asia-Pacific assessment
breadth

refers to change across multiple spheres, with emerging consensus that transformation requires co-evolutionary change across different spheres of society, including personal, economic, political, institutional and technological ones.

Values assessment
bridging organizations

offer a means to improve environmental management outcomes by spanning the science-policy interface to allow for the effective sharing of data, information, and knowledge. Bridging organizations are institutions that use specific mechanisms such as working groups to link and facilitate interactions among individual actors in a management setting.

Invasive alien species assessment
broad values

They refer to life goals, general guiding principles and orientations towards the world that are informed by people’s beliefs and worldviews. Broad values include moral principles, such as justice, belonging, freedom, but also life goals, like enjoyment, health, prosperity. Broad values influence specific values and provide them with a general context and meaning.

Values assessment
buen vivir

Although no universal definition of buen vivir has been attained yet, it has four common constitutive elements: (a) the idea of harmony with nature (including its abiotic components); (b) vindication of the principles and values of marginalized/subordinated peoples; (c) the State as guarantor of the satisfaction of basic needs (such as education, health, food and water), social justice and equality; and (d) democracy. There are also two cross-cutting lines: buen vivir as a critical paradigm of Eurocentric (anthropocentric, capitalist, economistic and universalistic) modernity, and as a new intercultural political project.

Global assessment (1st work programme), Americas assessment
buen vivir

An alternative to economic development-centered approaches, generally defined as forming part of the Andean indigenous cosmology, based on the belief that true wellbeing is only possible as part of a community in a broad sense, including people, nature and the Earth, linked by mutual responsibilities and obligations, and that the wellbeing of the community is above that of the individual.

buffer (ecology)

A natural or anthropogenic feature which separates land uses.

Global assessment (1st work programme)
buffer zones (protected areas)

Areas between core protected areas and the surrounding landscape or seascape which protect the network from potentially damaging external influences and which are essentially transitional areas.

Global assessment (1st work programme)
built environment

Comprises urban design, land use and the transportation system, and encompasses patterns of human activity within the physical environment.

Land degradation and restoration assessment
bumble bee

Members of the bee genus Bombus; they are social insects that form colonies with a single queen, or brood parasitic or cuckoo bumblebees (previously Psithyrus). Currently 262 species are known, which are found primarily in higher latitudes and at higher altitudes in the Northern Hemisphere, although they also occur in South America and New Zealand (where they were introduced).

Pollination assessment
burden

The resulting negative impacts of ecosystem use and management on people and nature, including distant, diffuse and delayed impacts.

Sustainable use assessment, Global assessment (1st work programme)
bureau

The IPBES Bureau is a subsidiary body established by the Plenary which carries out the governance functions of the Platform. It is made up of representatives nominated from each of the United Nations regions, and is chaired by the Chair of IPBES.

bureau

Within the context of IPBES - a subsidiary body established by the Plenary which carries out the administrative functions agreed upon by the Plenary, as articulated in the document on functions, operating principles and institutional arrangements of the Platform.

Scenarios and models assessment
bureau

The IPBES Bureau is a subsidiary body established by the Plenary which carries out the governance functions of IPBES. It is made up of representatives nominated from each of the United Nations regions and is chaired by the Chair of IPBES.

Land degradation and restoration assessment
bureau

The IPBES Bureau is a subsidiary body established by the Plenary which carries out the governance functions of IPBES. It is made up of representatives nominated from each of the United Nations regions, and is chaired by the Chair of IPBES.

Europe and Central Asia assessment
bush encroachment

An increase in density of shrubby or bushy tree vegetation in savannah or grassland systems.

Land degradation and restoration assessment
bushmeat

Meat for human consumption derived from wild animals.

Asia-Pacific assessment, Africa assessment, Europe and Central Asia assessment, Land degradation and restoration assessment, Americas assessment
bushmeat hunting

A form of subsistence hunting that entails the harvesting of wild animals for food and for non-food purposes, including for medicinal use.

Land degradation and restoration assessment
bushmeat hunting

Bushmeat (or wild meat) hunting is a form of hunting that entails the harvesting of wild animals for food and for non-food purposes, including for medicinal use.

Sustainable use assessment, Africa assessment
bushmeat hunting

Bushmeat (or wild meat) hunting is a form of subsistence hunting that entails the harvesting of wild animals for food and for non-food purposes, including for medicinal use.

Asia-Pacific assessment
bushmeat

See “wild meat”.

Sustainable use assessment
business-as-usual

IPCC term case assumes that future developments follow those of the past and no changes in policies will take place.

Asia-Pacific assessment
bycatch

The incidental capture of non-target species. The portion of a commercial fishing catch that consists of marine animals caught unintentionally.

Sustainable use assessment, Global assessment (1st work programme)
bycatch

The commercially undesirable species caught during a fishing process.

Europe and Central Asia assessment, Americas assessment, Asia-Pacific assessment
observing

Observing is defined as a non-extractive practice that is based on the observation of wild species. The observation can imply some interaction with the wild species, such as the activities of wildlife tourism and whale watching or no interaction with the wild species, such as photography.

Sustainable use assessment
ocean acidification

See acidification.

Americas assessment, Global assessment (1st work programme), Europe and Central Asia assessment
oceanic gyre

Large system of rotating ocean currents. There are five major gyres: the North and South Pacific Subtropical Gyres, the North and South Atlantic Subtropical Gyres, and the Indian Ocean Subtropical Gyre (NOAA, 2018c).

Global assessment (1st work programme)
oceanic oxygen minimum zones

Oxygen-deficient layers in the ocean water column. OMZs correspond to subsurface oceanic zones reaching ultra-low values of O2 concentration (Paulmier & Ruiz-Pino, 2008).

Global assessment (1st work programme)
oil spill

An oil spill is the release of a liquid petroleum hydrocarbon into the environment, especially the marine ecosystem, due to human activity, and is a form of pollution.

Asia-Pacific assessment
old-growth forest

From an ecological point of view, old-growth forests are a stage of forest development characterized by large/old trees and structural complexity including live and dead trees, and vertical and horizontal heterogeneity (including a multi-layered canopy). The structural diversity of old growth forests often supports distinctive/specialist biodiversity; large/old trees are keystone components of the ecosystem (Lindenmayer et al., 2012). In addition, the long-period of forest development without stand replacement disturbance allows many poor-dispersing species to accumulate (IUFRO, 2018). Other definitions can be found based on economic and social perspectives (Hilbert & Wienscczyk, 2007).

Global assessment (1st work programme)
oligotrophic

Nutrient-poor environment (IUCN, 2012a).

Global assessment (1st work programme)
oligotrophic

Nutrient-poor environment.

Sustainable use assessment
one biosecurity

interdisciplinary approach to biosecurity policy and research that builds on the interconnections between human, animal, plant, and environmental health to effectively prevent and mitigate the impacts of invasive alien species. It provides an integrated perspective to address the many biosecurity risks that transcend the traditional boundaries of health, agriculture, and the environment. Individual invasive alien plant and animal species often have multiple impacts across sectors: as hosts of zoonotic parasites, vectors of pathogens, pests of agriculture or forestry, as well as threats to biodiversity and ecosystem function

Invasive alien species assessment
one health

The One Health Initiative is a movement to forge co-equal, all inclusive collaborations between physicians, osteopathic physicians, veterinarians, dentists, nurses and other scientific-health and environmentally related disciplines.

Asia-Pacific assessment
one health

an integrated, unifying approach that aims to sustainably balance and optimize the health of people, animals, and ecosystems. It recognizes the health of humans, domestic and wild animals, plants, and the wider environment (including ecosystems) are closely linked and interdependent (One Health High-Level Expert Panel

Invasive alien species assessment
ontology

The philosophical study of the nature of being, becoming, existence, or reality, as well as the basic categories of being and their relations.

Global assessment (1st work programme)
ontology

The study or concern about what kinds of things exist - what entities there are in the universe. It is a branch of metaphysics,.

Pollination assessment
open ocean pelagic systems

Marine ecosystems in the light-flooded (euphotic) zone.

Global assessment (1st work programme)
opportunity cost

The added cost of using resources (as for production or speculative investment) that is the difference between the actual value resulting from such use and that of an alternative (such as another use of the same resources or an investment of equal risk but greater return).

Land degradation and restoration assessment
opportunity cost

The foregone benefits of carrying out one activity in favor of another, or giving up their initial preferred land-use plan.

Americas assessment
option value

The potential ability to use some of nature’s benefits in the future, although they are not currently used, or the likelihood for their future use is low. It represents the willingness to preserve an option for the future enjoyment of nature’s benefits.

Scenarios and models assessment
organic agriculture

Any system that emphasizes the use of techniques such as crop rotation, compost or manure application, and biological pest control in preference to synthetic inputs. Most certified organic farming schemes prohibit all genetically modified organisms and almost all synthetic inputs. Its origins are in a holistic management system that avoids off-farm inputs, but some organic agriculture now uses relatively high levels of off-farm inputs.

Land degradation and restoration assessment, Global assessment (1st work programme), Pollination assessment
organic agriculture

Any system that emphasises the use of techniques such as crop rotation, compost or manure application, and biological pest control in preference to synthetic inputs. Most certified organic farming schemes prohibit all genetically modified organisms and almost all synthetic inputs. Its origins are in a holistic management system that avoids off-farm inputs, but some organic agriculture now uses relatively high levels of off-farm inputs.

Europe and Central Asia assessment, Americas assessment, Asia-Pacific assessment
organic farming

Crop and livestock production using natural sources of nutrients (such as compost, crop residues, and manure) and natural methods of crop and weed control, instead of using synthetic or inorganic agrochemicals. Genetically modified organisms are not usually part of organic agriculture. It is also sometimes called low- input farming, but may involve high inputs of labour and be intensive in its practice.

Pollination assessment
other effective area-based conservation measures

A geographically defined area other than a protected area, which is governed and managed in ways that achieve positive and sustained long- term outcomes for the in situ conservation of biodiversity (CBD, 2018a).

Global assessment (1st work programme)
overexploitation

Overexploitation means harvesting species from the wild at rates faster than natural populations can recover. Includes overfishing, and overgrazing.

Asia-Pacific assessment, Sustainable use assessment
overexploitation

Harvesting species from the wild at rates faster than natural populations can recover. Includes overfishing, and overgrazing.

Africa assessment, Europe and Central Asia assessment, Americas assessment, Global assessment (1st work programme)
overgrazing

Overgrazing occurs when plants are exposed to intensive grazing for extended periods of time, or without sufficient recovery periods. It can be caused by either livestock in poorly managed agricultural applications, game reserves, or nature reserves. It can also be caused by immobile, travel restricted populations of native or non-native wild animals.

Asia-Pacific assessment, Sustainable use assessment
overgrazing

An excess of herbivory that leads to degradation of plant and soil resources.

Americas assessment
overstocking

Placing a number of animals on a given area that will result in overuse if continued to the end of the planned grazing period.

Land degradation and restoration assessment