Skip to main content

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)
human history

A general term used to refer to pre-historical and historical periods describing the development of humanity. Different classifications of periods exist reflecting different interpretation of human history.

Global assessment (1st work programme), Sustainable use assessment
human rights

Rights inherent to all human beings, regardless of race, colour, sex, language, religion or other opinion, national or social origin, property, birth or any other status. These rights are interrelated, interdependent and indivisible.

Land degradation and restoration assessment
human rights instruments

Instruments for the protection and promotion of human rights, including general instruments, instruments concerning specific issues, and instruments relating to the protection of particular groups.

Land degradation and restoration assessment
human rights

The inalienable fundamental rights of each and every human being as acknowledged in the United Nations Declaration of Human Rights (United Nations, 1948). Arguments of intragenerational justice basically refer to human rights.

Values assessment
human values

See Values.

Asia-Pacific assessment
human well-being

A state of existence that fulfils various human needs, including material living conditions and quality of life, as well as the ability to pursue one's goals, to thrive, and feel satisfied with one's life (IPCC, 2020). The IPBES definition is consistent with this definition but notes that well-being also includes non-material living conditions and cultural identity. The phrase ‘Good quality of Life' as used in this report (see glossary entry) is intended to be inclusive of both the human well-being definitions given above.

human well-being

See Good Quality of Life.

Asia-Pacific assessment
human well-being

see well-being.

Scenarios and models assessment
human-nature relations

The ways in which people relate to and engage with the natural environment, which are diverse and linked to worldviews, values and attitudes embedded in daily life.

Values assessment
humanistic economics

Humanistic economics intend to show that humankind is perfectly capable of living without the profit motive, and has done so for most of its history. It goes again the tendency to consider the profit motive as self-evident, an idea that underlies many political decisions. See also Behavioural economics.

Land degradation and restoration assessment
humification

Decomposition of organic material followed by a synthesis of humic substances.

Land degradation and restoration assessment
hunting

The capture by humans of wild mammals, birds, and reptiles, whether dead or alive, irrespective of the techniques used to capture them or the reasons to do so.

Global assessment (1st work programme)
hybrid model

See models.

hybrid model

Models that combine correlative and process-based modelling approaches.

Scenarios and models assessment
hydraulic fracturing

An oil and gas well development process that typically involves injecting water, sand, and chemicals under high pressure into a bedrock formation via the well. This process is intended to create new fractures in the rock as well as increase the size, extent, and connectivity of existing fractures. Hydraulic fracturing is a well-stimulation technique used commonly in low-permeability rocks like tight sandstone, shale, and some coal beds to increase oil and/or gas flow to a well from petroleum-bearing rock formations.

Land degradation and restoration assessment
hydrothermal vent

A fissure on the floor of a sea out of which flows water that has been heated by underlying magma. The water can be as hot as 400°C (752°F) and usually contains dissolved minerals that precipitate out of it upon contact with the colder seawater, building a stack of minerals, or chimney. Hydrothermal vents form an ecosystem for microbes and animals, such as tube worms, giant clams, and blind shrimp, that can with stand the hostile environment. The hottest hydrothermal vents are called black smokers because they spew iron and sulfide which combine to form iron mono sulfide, a black compound.

Asia-Pacific assessment
hypoxia

Low dissolved oxygen levels in coastal and oceanic waters (<2mL per liter of water), either naturally occurring or as a result of a degradation (e.g. eutrophication).

Sustainable use assessment, Global assessment (1st work programme)
radiative forcing

The measurement of the capacity of a gas or other forcing agents to affect that energy balance, thereby contributing to climate change. Put more simply, RF expresses the change in energy in the atmosphere due to GHG emissions.

Land degradation and restoration assessment
ramsar convention on wetlands

The Convention on Wetlands, called the Ramsar Convention, is an intergovernmental treaty that provides the framework for national action and international cooperation for the conservation and wise use of wetlands and their resources.

Asia-Pacific assessment
ramsar convention on wetlands

The Convention on Wetlands, called the Ramsar Convention, of International Importance especially as Waterfowl Habitat, is an intergovernmental treaty that provides the framework for national action and international cooperation for the conservation and wise use of wetlands and their resources.

Sustainable use assessment
ramsar site

A wetland site designated of international importance especially as Waterfowl Habitat under the Ramsar Convention, an intergovernmental environment treaty established in 1975 by UNESCO, coming into force in 1975. A wetland of international significance in terms of ecology, botany, zoology, limnology or hydrology. Such site meets at least one of the criteria of Identifying Wetlands of International Importance set by Ramsar Convention and is designated by appropriate national authority to be added to Ramsar list.

Asia-Pacific assessment
ramsar site

A Ramsar site is a wetland site designated of international importance especially as Waterfowl Habitat under the Ramsar Convention, an intergovernmental environment treaty established in 1975 by UNESCO, coming into force in 1975. Ramsar site refers to wetland of international significance in terms of ecology, botany, zoology, limnology or hydrology. Such a site meets at least one of the criteria of identifying Wetlands of International Importance set by Ramsar Convention and is designated by appropriate national authority to be added to Ramsar list.

Europe and Central Asia assessment, Americas assessment
ramsar site

A wetland site designated of international importance especially as Waterfowl Habitat under the Ramsar Convention, an intergovernmental environment treaty established in 1975 by UNESCO, coming into force in 1975. Ramsar site refers to wetland of international significance in terms of ecology, botany, zoology, limnology or hydrology. Such a site meets at least one of the criteria of identifying wetlands of international importance set by Ramsar Convention and is designated by appropriate national authority to be added to Ramsar list.

Land degradation and restoration assessment
ramsar site

A Ramsar site is a wetland site designated of international importance especially as Waterfowl Habitat under the Ramsar Convention, an intergovernmental environment treaty established in 1975 by UNESCO, coming into force in 1975. Ramsar site refers to a wetland of international significance in terms of ecology, botany, zoology, limnology or hydrology. Such site meets at least one of the criteria of Identifying Wetlands of International Importance set by Ramsar Convention and is designated by appropriate national authority to be added to Ramsar list.

Africa assessment
range

“the current limits of distribution of a species, accounting for all known, inferred or projected sites of occurrence”

Invasive alien species assessment
range shift

A change in the distributional limits of the native geographical range of a species, most commonly driven human-related factors (e.g. climate change).

Pollination assessment
rangeland

Natural grasslands used for livestock grazing.

Land degradation and restoration assessment, Asia-Pacific assessment, Sustainable use assessment, Global assessment (1st work programme), Americas assessment, Europe and Central Asia assessment
re-wilding

The preservation of land with the goal of restoring natural ecosystem processes and reducing human control of landscapes (Gillson et al., 2011) to allow declining populations to rebound.

Global assessment (1st work programme)
reactive nitrogen

All biologically, photochemically, and/or radiatively active forms of nitrogen; a diverse pool of nitrogenous compounds that includes organic compounds (e.g. urea, amines, proteins, amides), mineral nitrogen forms, such as nitrates and ammonium, as well as gases that are chemically active in the troposphere (NOx, ammonia, nitrous oxide) and contribute to air pollution and the greenhouse effect.

Global assessment (1st work programme)
reality

Current state of biodiversity and ecosystem functions independent of human knowledge and perceptions and ecosystem services (Nature in IPBES conceptual framework). See also Perceptions; Concepts”; Worldviews”.

Land degradation and restoration assessment
rebound effect

The pattern by which resource users tend to compensate for improved efficiency by shifting behaviour towards greater consumption, which undermines apparent gains. For example, an increased fuel saving of motor vehicle tends to be compensated by spending more money on other resources or by driving more.

Global assessment (1st work programme)
rebound effect

The pattern by which resource users tend to compensate for improved efficiency by shifting behavior towards greater consumption, which undermines apparent gains. For example, an increased fuel saving of motor vehicle tends to be compensated by spending more money on other resources or by driving more.

Sustainable use assessment
reclamation

The stabilization of the terrain, assurance of public safety, aesthetic improvement, and usually a return of the land to what, within the regional context, is considered to be a useful purpose.

Land degradation and restoration assessment
recognition

In social-environmental justice, recognition is about the respect for (community) ways of life, local knowledge, and cultural difference.

Values assessment
recreational uses (of wild species)

Recreational uses are defined as uses of wild species in which enjoyment is considered a primary value.

Sustainable use assessment
recreational values

Monetary or non-monetary worth given to the human recreational use of ecosystems, areas or other natural phenomena.

Asia-Pacific assessment
recruitment

The influx of new members into a population by reproduction or immigration (IUCN, 2012a).

Global assessment (1st work programme)
recruitment

The influx of new members into a population by reproduction or immigration.

Sustainable use assessment
reducing emissions from deforestation and forest degradation

A global mechanism designed to offer positive incentives to reduce emissions from deforestation and forest degradation, and to promote the conservation, management and enhancement of forest stocks in developing countries (http://theredddesk. org/encyclopaedia/reducing-emissions- deforestation-and-forest-degradation-redd- and-role-conservation). REDD-plus stands for countries’ efforts to reduce emissions from deforestation and forest degradation, and foster conservation, sustainable management of forests, and enhancement of forest carbon stocks.

Asia-Pacific assessment
reducing emissions from deforestation and forest degradation

Mechanism developed by Parties to the United Nations Framework Convention on Climate Change (UNFCCC), which creates a financial value for the carbon stored in forests by offering incentives for developing countries to reduce emissions from forested lands.

reducing emissions from deforestation and forest degradation

Reducing emissions from deforestation and forest degradation (REDD+) is a mechanism developed by Parties to the United Nations Framework Convention on Climate Change (UNFCCC). It creates a financial value for the carbon stored in forests by offering incentives for developing countries to reduce emissions from forested lands and invest in low-carbon paths to sustainable development. Developing countries would receive results-based payments for results- based actions. REDD+ goes beyond simply deforestation and forest degradation, and includes the role of conservation, sustainable management of forests and enhancement of forest carbon stocks.

Europe and Central Asia assessment, Land degradation and restoration assessment
reduced impact logging

The intensively planned and carefully controlled implementation of timber harvesting operations to minimize the environmental impact on forest stands and soils (FAO, 2018a).

Global assessment (1st work programme)
reduced impact logging

The intensively planned and carefully controlled implementation of timber harvesting operations to minimize the environmental impact on forest stands and soils.

Sustainable use assessment
reducing emissions from deforestation and forest degradation

Mechanism developed by Parties to the United Nations Framework Convention on Climate Change (UNFCCC). It creates a financial value for the carbon stored in forests by offering incentives for developing countries to reduce emissions from forested lands and invest in low-carbon paths to sustainable development. Developing countries would receive results-based payments for results-based actions. REDD+ goes beyond simply deforestation and forest degradation, and includes the role of conservation, sustainable management of forests and enhancement of forest carbon stocks.

Americas assessment, Sustainable use assessment
reforestation

Planting of forests on lands that have previously contained forests but that have been converted to some other use.

Sustainable use assessment
reforestation

Intentional replanting of trees and re- establishing a forest in areas that have been deforested.

Global assessment (1st work programme), Land degradation and restoration assessment
regime

A long-term qualitative behavior where the system’s dynamics tend to stabilize, at different spatial and temporal scales in marine, terrestrial and polar systems (Rocha et al., 2015).

Global assessment (1st work programme), Sustainable use assessment
regime shift

Substantial reorganization in system structure, functions and feedbacks that often occurs abruptly and persists over time.

Americas assessment, Sustainable use assessment, Land degradation and restoration assessment, Europe and Central Asia assessment
regime shift

Persistent change in systems structure and function, which can be abrupt and difficult to reverse. Regime shifts in socio-ecological systems can have substantial impacts on ecosystem services.

Global assessment (1st work programme), Scenarios and models assessment
regional

adj. Pertaining to an area, especially part of a country or the world having definable characteristics but not always fixed boundaries.

Pollination assessment