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)
economic and financial instruments

Economic and financial instruments can be used to change people's behavior towards desired policy objectives. Instruments typically encompass a wide range of designs and implementation approaches. They include traditional fiscal instruments, including for example subsidies, taxes, charges and fiscal transfers. Additionally, instruments such as tradable pollution permits or tradable land development rights rely on the creation of new markets. Further instruments represent conditional and voluntary incentive schemes such as payments for ecosystem services. All these can in principle be used to correct for policy or/and market failures and reinstate full-cost pricing. They aim at reflecting social costs or benefits of the conservation and use of biodiversity and ecosystem services of a public good nature (getting the price right). Financial instruments, in contrast, are often extra-budgetary and can be financed from domestic sources or foreign aid, external borrowing, debt for nature swaps, etc. It should be noted that economic instruments do not necessarily imply that commodification of environmental functions is promoted. Generally, they are meant to change behavior of individuals (e.g. consumers and producers) and public actors (e.g. local and regional governments).

Asia-Pacific assessment
economic and financial instruments

Economic and financial instruments can be used to change people's behavior towards desired policy objectives. Instruments typically encompass a wide range of designs and implementation approaches. They include traditional fiscal instruments, including for example subsidies, taxes, charges and fiscal transfers. Additionally, instruments such as tradable pollution permits or tradable land development rights rely on the creation of new markets. Further instruments represent conditional and voluntary incentive schemes such as payments for ecosystem services. All these can in principle be used to correct for policy or/and market failures and reinstate full-cost pricing. They aim at reflecting social costs or benefits of the conservation and use of biodiversity and ecosystem services of a public good nature (getting the price right). Financial instruments, in contrast, are often extra-budgetary and can be financed from domestic sources or foreign aid, external borrowing, debt for nature swaps, etc. Economic instruments do not necessarily imply that commodification of environmental functions is promoted. Generally, they are meant to change behavior of individuals (e.g. consumers and producers) and public actors (e.g. local and regional governments).

Europe and Central Asia assessment
economic and financial instruments

Economic and financial instruments can be used to change people's behaviour towards desired policy objectives. Instruments typically encompass a wide range of designs and implementation approaches. They include traditional fiscal instruments, including for example subsidies, taxes, charges and fiscal transfers. Additionally, instruments such as tradable pollution permits or tradable land development rights rely on the creation of new markets. Further instruments represent conditional and voluntary incentive schemes such as payments for ecosystem services. All these can in principle be used to correct for policy or/and market failures and reinstate full-cost pricing. They aim at reflecting social costs or benefits of the conservation and use of biodiversity and ecosystem services of a public good nature (getting the price right). Financial instruments, in contrast, are often extra-budgetary and can be financed from domestic sources or foreign aid, external borrowing, debt for nature swaps and so on. It should be noted that economic instruments do not necessarily imply that commodification of environmental functions is promoted. Generally, they are meant to change behaviour of individuals (e.g. consumers and producers) and public actors (e.g. local and regional governments).

Land degradation and restoration assessment
economic valuation

See values.

Europe and Central Asia assessment, Land degradation and restoration assessment, Pollination assessment
economic value

A measure of the benefit provided by a good or service to an economic agent (e.g. buyer or seller). It is not necessarily the same as market value. It is generally measured by units of currency, and can be interpreted to mean the maximum amount of money a specific actor is willing and able to accept or pay for the good or service.

economic value

Economists group values in terms of their use or non-use. Use values can be both direct and indirect, and can relate to current or future (option) uses.

Scenarios and models assessment
economic vulnerability

Degree to which people, property, resources, systems, and cultural, economic, environmental, and social activity are susceptible to harm, degradation, or destruction on being exposed to an economic or environmental hostile agent or factor.

Pollination assessment
ecoregion

A large area of land or water that contains a geographically distinct assemblage of natural communities that: (a). Share a large majority of their species and ecological dynamics; (b). Share similar environmental conditions, and; (c). Interact ecologically in ways that are critical for their long-term persistence. In contrast to biomes, an ecoregion is generally geographically specific, at a much finer scale. For example, the East African Montane Forest ecoregion of Kenya (WWF ecoregion classification) is a geographically specific and coherent example of the globally occurring tropical and subtropical forest biome.

Europe and Central Asia assessment, Global assessment (1st work programme), Land degradation and restoration assessment, Americas assessment, Asia-Pacific assessment, Africa assessment
ecoregion

A large area of land or water that contains a geographically distinct assemblage of natural communities that: Share a large majority of their species and ecological dynamics; Share similar environmental conditions, and; Interact ecologically in ways that are critical for their long-term persistence (source: WWF). In contrast to biomes, an ecoregion is generally geographically specific, is at a much finer scale, and contains ecologically interacting biota. For example, the “East African Montane Forest” eco- region of Kenya (WWF eco-region classification) is a geographically specific and coherent example of the globally occurring “tropical and subtropical forest” biome.

ecosystem accounting

The process of constructing formal accounts for ecosystems.

Europe and Central Asia assessment
ecosystem approach

See 'Ecosystem-based approach'.

Global assessment (1st work programme), Sustainable use assessment
ecosystem degradation

A long-term reduction in an ecosystem’s structure, functionality, or capacity to provide benefits to people.

Sustainable use assessment
ecosystem degradation

A long-term reduction in an ecosystem's structure, functionality, or capacity to provide benefits to people.

Americas assessment
ecosystem degradation

A persistent (long-time) reduction in the capacity to provide ecosystem services.

Global assessment (1st work programme), Europe and Central Asia assessment, Land degradation and restoration assessment, Asia-Pacific assessment
ecosystem ecology

The integrated study of biotic and abiotic components of ecosystems and their interactions within an ecosystem framework. This science examines physical and biological structures and examines how these ecosystem characteristics interact with each other.

Sustainable use assessment, Global assessment (1st work programme)
ecosystem engineer

Organism that changes the abiotic environment by physically altering structure, which often have effects on other biota and their interactions, and on ecosystem processes.

Global assessment (1st work programme)
ecosystem function

The flow of energy and materials through the biotic and abiotic components of an ecosystem. It includes many processes such as biomass production, trophic transfer through plants and animals, nutrient cycling, water dynamics and heat transfer.

Sustainable use assessment, Pollination assessment, Asia-Pacific assessment, Africa assessment, Europe and Central Asia assessment, Land degradation and restoration assessment, Americas assessment
ecosystem functioning

The flow of energy and materials through the arrangement of biotic and abiotic components of an ecosystem. It includes many processes such as biomass production, trophic transfer through plants and animals, nutrient cycling, water dynamics and heat transfer. The concept is used here in the broad sense and it can thus be taken as being synonymous with ecosystem properties or ecosystem structure and function.

Scenarios and models assessment, Pollination assessment
ecosystem goods

According to the Millennium Ecosystem Assessment, they are included in the general definition of ecosystem services. According to other approaches, they are objects from ecosystems that people value through experience, use or consumption. The use of this term in the context of this document goes well beyond a narrow definition of goods simply as physical items that are bought and sold in markets, and includes objects that have no market price.

Scenarios and models assessment
ecosystem health

Ecosystem health is a metaphor used to describe the condition of an ecosystem, by analogy with human health. Note that there is no universally accepted benchmark for a healthy ecosystem. Rather, the apparent health status of an ecosystem can vary, depending upon which metrics are employed in judging it, and which societal aspirations are driving the assessment.

Europe and Central Asia assessment, Sustainable use assessment
ecosystem health

A state or condition of an ecosystem that expresses attributes of biodiversity within normal ranges, relative to its ecological stage of development. Ecosystem health depends inter alia on ecosystem resilience and resistance.

Asia-Pacific assessment
ecosystem health

A state or condition of an ecosystem that expresses attributes of biodiversity within normal ranges, relative to its ecological stage of development. Ecosystem health depends inter alia on ecosystem resilience and resistance. Note that there is no universally accepted benchmark for a healthy ecosystem. Rather, the apparent health status of an ecosystem can vary, depending upon which metrics are employed in judging it, and which societal aspirations are driving the assessment.

Land degradation and restoration assessment
ecosystem health

Ecosystem health is a metaphor used to describe the condition of an ecosystem,by analogy with human health. Note that there is no universally accepted benchmark for a healthy ecosystem. Rather, the apparent health status of an ecosystem can vary, depending upon which metrics are employed in judging it, and which societal aspirations are driving the assessment.

Americas assessment
ecosystem integrity

The ability of an ecosystem to support and maintain ecological processes and a diverse community of organisms. It is measured as the degree to which a diverse community of native organisms is maintained, and is used as a proxy for ecological resilience, intended as the capacity of an ecosystem to adapt in the face of stressors, while maintaining the functions of interest.

Global assessment (1st work programme)
ecosystem management

An approach to maintaining or restoring the composition, structure, function, and delivery of services of natural and modified ecosystems for the goal of achieving sustainability. It is based on an adaptive, collaboratively developed vision of desired future conditions that integrates ecological, socioeconomic, and institutional perspectives, applied within a geographic framework, and defined primarily by natural ecological boundaries.

Americas assessment, Sustainable use assessment, Europe and Central Asia assessment, Asia-Pacific assessment
ecosystem management

An approach to maintaining or restoring the composition, structure, function and delivery of services of natural and modified ecosystems for the goal of achieving sustainability. It is based on an adaptive, collaboratively developed vision of desired future conditions that integrates ecological, socioeconomic, and institutional perspectives, applied within a geographic framework, and defined primarily by natural ecological boundaries.

Land degradation and restoration assessment
ecosystem restoration

Policies and practices that are necessarily focused on recovery of a self-sustaining living system characteristic of past or least- disturbed landscapes.

Americas assessment
ecosystem sensitivity

The degree to which an ecosystem is affected, either adversely or beneficially, by climate related stimuli, including mean (average) climate characteristics, climate variability and the frequency and magnitude of extremes.

Global assessment (1st work programme)
ecosystem service

A service that is provided by an ecosystem as an intrinsic property of its functionality (e.g. pollination, nutrient cycling, nitrogen fixation, fruit and seed dispersal). The benefits (and occasionally disbenefits) that people obtain from ecosystems. These include provisioning services such as food and water; regulating services such as flood and disease control; and cultural services such as recreation and sense of place. In the original definition of the Millennium Ecosystem Assessment the concept of ecosystem goods and services is synonymous with ecosystem services.

Pollination assessment
ecosystem service

The benefits people obtain from ecosystems. In the Millennium Ecosystem Assessment, ecosystem services can be divided into supporting, regulating, provisioning and cultural. This classification, however, is superseded in IPBES assessments by the system used under “Nature’s contributions to people”. This is because IPBES recognizes that many services fit into more than one of the four categories. For example, food is both a provisioning service and also, emphatically, a cultural service, in many cultures.

Sustainable use assessment
ecosystem service

The benefits (and occasionally disbenefits or losses) that people obtain from ecosystems. These include provisioning services such as food and water; regulating services such as flood and disease control; and cultural services such as recreation, ethical and spiritual, educational and sense of place. In the original definition of the Millennium Ecosystem Assessment the concept of ecosystem goods and services is synonymous with ecosystem services. Other approaches distinguish final ecosystem services that directly deliver welfare gains and/or losses to people through goods from this general term that includes the whole pathway from ecological processes through to final ecosystem services, goods and anthropocentric values to people.

Scenarios and models assessment
ecosystem service

The benefits people obtain from ecosystems. In the Millennium Ecosystem Assessment, ecosystem services can be divided into supporting, regulating, provisioning and cultural.

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

The benefits people obtain from ecosystems. In the Millennium Ecosystem Assessment, ecosystem services can be divided into supporting, regulating, provisioning and cultural. This classification, however, is superseded in IPBES assessments by the system used under nature's contributions to people. This is because IPBES recognises that many services fit into more than one of the four categories. For example, food is both a provisioning service and also, emphatically, a cultural service, in many cultures.

Americas assessment, Europe and Central Asia assessment
ecosystem service

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. The concept ‘‘ecosystem goods and services'’ is synonymous with ecosystem services.

Africa assessment, Asia-Pacific assessment
ecosystem service

The benefits people obtain from nature (MEA, 2003; Diaz et al., 2005). This is the original IPBES definition, inherited from the Millennium Ecosystem Assessment and the literature which preceded it, and is the one most widely used in the research and policy community and the technical literature. IPCC defines ecosystem services as “ecological processes or functions which have value to individuals or society”, which is consistent with, and slightly more precise than, the IPBES definition, but is less widely used in the community. Within IPBES, the term “ecosystem services” and its subtypes have since 2018 been superseded by the terminology associated with the conceptual framework referred to as “nature’s contributions to people” (see Natures Contributions to People for explanation of the logic of the change). This includes most - but not all -of the specific components previously under ecosystem services. What were formerly known as supporting services are excluded, largely to avoid double-accounting.

IPBES-IPCC co-sponsored workshop on biodiversity and climate change
ecosystem service

The benefits people obtain from ecosystems. In the Millennium Ecosystem Assessment, ecosystem services can be divided into supporting, regulating, provisioning and cultural. This classification, however, is superseded in IPBES assessments by the system used under “nature’s contributions to people”. This is because IPBES recognises that many services fit into more than one of the four categories. For example, food is both a provisioning service and also, emphatically, a cultural service, in many cultures.

Global assessment (1st work programme), Values assessment
ecosystem structure

The individuals and communities of plants and animals of which an ecosystem is composed, their age and spatial distribution, and the non- living natural resources present.

Global assessment (1st work programme)
ecosystem

A community of living organisms (plants, animals, fungi and various microbes) in conjunction with the nonliving components of their environment (such as energy, air, water and mineral soil), all interacting as a system.

Pollination assessment
ecosystem

A dynamic complex of plant, animal and micro-organism communities and their non- living environment interacting as a functional unit.

Global assessment (1st work programme), Africa assessment
ecosystem

A dynamic complex of plant, animal and micro-organism communities and their non-living environment interacting as a functional unit.

Asia-Pacific assessment, Scenarios and models assessment, Americas assessment, Europe and Central Asia assessment, Land degradation and restoration assessment, Invasive alien species assessment
ecosystem-based adaptation

The conservation, sustainable management and restoration of natural ecosystems to help people adapt to climate change.

Global assessment (1st work programme)
ecosystem-based adaptation to climate change

The use of biodiversity and ecosystem services as part of an overall adaptation strategy to help people to adapt to the adverse effects of climate change (CBD, 2012). It refers to actions that mix the use of biodiversity and ecosystem services policy instruments with socio-economic and development policy instruments to help people adapt to the adverse effects of climate change.

Americas assessment
ecosystem-based approach

A strategy for the integrated management of land, water and living resources that promotes conservation and sustainable use in an equitable way. An ecosystem approach is based on the application of appropriate scientific methods, focused on levels of biological organization that encompass the essential structure, processes, functions and interactions among and between organisms and their environment. It recognizes that humans, with their cultural diversity, are an integral component of many ecosystems.

Sustainable use assessment, Global assessment (1st work programme)
ecosystem-based management

an environmental management approach that recognizes the full array of interactions within an ecosystem, including humans, rather than considering single issues, species, or ecosystem services in isolation

Invasive alien species assessment
ecotone

A transition area between two biomes or vegetation types.

Land degradation and restoration assessment
ecotourism

Sustainable travel undertaken to access sites or regions of unique natural or ecological quality, promoting their conservation, low visitor impact, and socio-economic involvement of local populations.

ecotourism

Sustainable travel undertaken to access sites or regions of unique natural or ecological quality, promoting their conservation, low visitor impact, and socio- economic involvement of local populations.

Africa assessment, Europe and Central Asia assessment, Asia-Pacific assessment, Americas assessment, Global assessment (1st work programme), Land degradation and restoration assessment
ectotherm

Often referred to as cold-blooded and applied to organisms that cannot regulate their body temperature relative to the surrounding environment, i.e. deriving heat from outside the body.

Global assessment (1st work programme)
edge effect

A change in species composition, physical conditions or ecological factors at the boundary between two or more habitats.

Sustainable use assessment, Global assessment (1st work programme)
el nino

An irregularly recurring flow of unusually warm surface waters from the Pacific Ocean toward and along the western coast of South America that prevents upwelling of nutrient- rich cold deep water and that disrupts typical regional and global weather patterns.

Asia-Pacific assessment