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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)
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
validation (of models)

Typically refers to checking model outputs for consistency with observations. However, since models cannot be validated in the formal sense of the term (i.e. proven to be true), some scientists prefer to use the words benchmarking or evaluation.

Scenarios and models assessment
validation (of models)

See models.

valuation

It is the process of documenting the existence of values, identifying when and where and by whom they are expressed, that in turn allows characterizing values. Valuation of nature can inform decision-making about numerous human-nature relationships; it can support decision processes about alternative projects or policies, inform the design of policy tools and instruments, for conservation and sustainable management of nature or to improve justice. Outside the formal policy space, valuation is also undertaken by academia, the private sector, non-governmental organizations and by indigenous and local communities (IPLC). IPLC undertake valuation not only to make decisions about nature, but also to assess their relationships with nature, to plan collectively, resolve conflicts, defend their territories, and as a means for strengthening and reciprocating their connections with nature.

Values assessment
valuation approach

Valuation approaches are higher level assumptions, ideas or beliefs that underpin methods. They translate key decisions on how a method is to be applied or how the information generated by methods is to be interpreted. For each approach there are often multiple accepted methods that adhere to the basic assumptions and ideas of the given approach. Valuation approaches can also be manifested as “traditions” or widely accepted and expected protocols for undertaking valuation. Valuation traditions are heavily informed and influenced by the cultural context and/or epistemological worldviews.

Values assessment
valuation method

Are the specific techniques and accepted formal procedures that are applied to gather and analyse information from nature and society in order to and understand or make explicit the state of nature and its importance to people a) quantity, quality and status of nature including its spatial and temporal variations; b) the relevance or importance of nature to people and societies; and c) the nature of human-nature and nature-human relations in terms of how people and societies embed and live out their values of nature (as actions, principles, worldviews or philosophies).

Values assessment
value (as importance)

A value can be the importance of something for itself or for others, now or in the future, close by or at a distance. This importance can be considered in three broad classes. 1. The importance that something has subjectively, and may be based on experience. 2. The importance that something has in meeting objective needs. 3. The intrinsic value of something.

Americas assessment, Asia-Pacific assessment, Europe and Central Asia assessment, Land degradation and restoration assessment
value (as importance)

A value can be the importance of something for itself or for others, now or in the future, close by or at a distance. This importance can be considered in three broad classes: The importance that something has subjectively, and may be based on experience. The importance that something has in meeting objective needs. The intrinsic value of something.

Africa assessment
value (as measure)

A value can be a measure. In the biophysical sciences, any quantified measure can be seen as a value.

Americas assessment, Europe and Central Asia assessment, Land degradation and restoration assessment, Asia-Pacific assessment, Africa assessment
value (as preference)

A value can be the preference someone has for something or for a particular state of the world. Preference involves the act of making comparisons, either explicitly or implicitly. Preference refers to the importance attributed to one entity relative to another one.

Africa assessment, Land degradation and restoration assessment, Asia-Pacific assessment, Americas assessment, Europe and Central Asia assessment
value (as principle)

A value can be a principle or core belief underpinning rules and moral judgments. Values as principles vary from one culture to another and also between individuals and groups.

Africa assessment, Land degradation and restoration assessment, Europe and Central Asia assessment, Asia-Pacific assessment, Americas assessment
value chains (that link production systems, markets and consumers)

a contact network, which provides opportunities for the transmission of contagious diseases within and between sectors. It follows that these chains (networks) can be understood and taken into account in planning risk management strategies for disease prevention and control” especially in relation with “risky parts of the value chain”

Invasive alien species assessment
value change

Value change refers to the modification of people’s values or of the prioritization of their values in particular contexts. Value change processes occur at different social scales, from large-scale cultural shifts (e.g. intergenerational shifts due to changing demography or changes to shared values) to small-scale personal shifts (e.g. values formation and change over an individual’s lifetime). Individual, social and social-ecological experiences and interactions influence value change; examples include formal and informal education, social practices, group conformation processes, personal experiences and shocks, and social-ecological events (e.g. natural disasters, pandemics).

Values assessment
value expression

Values can be expressed explicitly through language and implicitly through actions like choices, decisions made, everyday practices or rituals. Valuation methods are used to undertake explicit valuation. Methods and approaches to integrate and bridge values, provide knowledge about nature’s values as input to decision-making.

Values assessment
value formation

'Value formation' refers to how values develop in the first place. It can occur in individual-focused processes, trough socially-oriented processes or in social-ecological processes that do not separate humans and nature.

Values assessment
value indicator

Indicators of value are quantitative and qualitative measures of the importance of nature to people. Indicators used to express the value of nature can be biophysical, economic and socio-cultural.

Values assessment
value monism

Derives from a utilitarian perspective on human-nature relationships which privileges some values of nature over others (usually monetary values).

Values assessment
value pluralism

Value pluralism is the idea that there are several values which may be equally correct and fundamental, and yet in conflict with each other. It is the opposite of value monism. More broadly speaking, value pluralism may also refer to different people having different worldviews and hence different values. In addition, these plural values may be incommensurable (i.e. they do not share a single unit of measurement, a single metric, and that there is no objective way of comparing them or weighting them against each other).

Values assessment
value system

Sets of values according to which people, societies and organizations regulate their behaviour.

Scenarios and models assessment
value system

Set of values according to which people, societies and organizations regulate their behaviour. Value systems can be identified in both individuals and social groups.

Africa assessment, Europe and Central Asia assessment, Asia-Pacific assessment, Americas assessment, Land degradation and restoration assessment
value-articulating institution

Methods for valuation of nature and NCPs may be termed value articulating institutions since they are based on a set of rules concerning the valuing process: Participation: who participates; in what capacity; and how. What counts as data and what form it should take (prices, weights, arguments, physical measures etc.). The kind of data handling procedures involved: how data is produced; and how data are compared, weighed or aggregated.

Values assessment
values

Value systems: Set of values according to which people, societies and organizations regulate their behavior. Value systems can be identified in both individuals and social groups (Pascual et al., 2017). Value (as principle): A value can be a principle or core belief underpinning rules and moral judgments. Values as principles vary from one culture to another and also between individuals and groups (IPBES, 2015). Value (as preference): A value can be the preference someone has for something or for a particular state of the world. Preference involves the act of making comparisons, either explicitly or implicitly. Preference refers to the importance attributed to one entity relative to another one (IPBES, 2015). Value (as importance): A value can be the importance of something for itself or for others, now or in the future, close by or at a distance. This importance can be considered in three broad classes. 1. The importance that something has subjectively, and may be based on experience. 2. The importance that something has in meeting objective needs. 3. The intrinsic Please do not cite, quote or circulate 1733 value of something (IPBES, 2015). Value (as measure): A value can be a measure. In the biophysical sciences, any quantified measure can be seen as a value (IPBES, 2015). Non-anthropocentric value: A non-anthropocentric value is a value centered on something other than human beings. These values can be non-instrumental or instrumental to non-human ends (IPBES, 2015). Intrinsic value: This concept refers to inherent value, that is the value something has independent of any human experience or evaluation. Such a value is viewed as an inherent property of the entity and not ascribed or generated by external valuing agents (Pascual et al., 2017). Anthropocentric value: The value that something has for human beings and human purposes (Pascual et al., 2017). Instrumental value: The value attributed to something as a means to achieving a particular end (Pascual et al., 2017). Non-instrumental value: The value attributed to something as an end in itself, regardless of its utility for other ends. Relational value: The values that contribute to desirable relationships, such as those among people or societies, and between people and nature, as in “Living in harmony with nature” (IPBES, 2015). Integrated valuation: The process of collecting, synthesizing, and communicating knowledge about the ways in which people ascribe importance and meaning of Nature’s contributions to people, to facilitate deliberation and agreement for decision making and planning.

Sustainable use assessment
values of nature

The values of nature encompass the different layers of the values typology, including worldviews (and underpinning knowledge systems, languages and cultures), broad values, specific values, indicators and preferences.  In addition to instrumental values, the values of nature include reciprocal values and perspectives of nature where nature and people are not seen as separate, and where intrinsic values are acknowledged on a par with values of nature’s benefits to people.

Values assessment
values of nature

When referring to values of ‘nature’, we expand on the concept proposed by Díaz et al. (2015) by recognizing that individual and group understandings of nature are socially constructed, and that different social groups have different conceptualizations of the relationship between the human and non-human world. For IPBES, nature refers loosely to the non-human living world including the scientific categories of biodiversity, ecosystem structure and functioning, evolution, the biosphere, humankind’s shared evolutionary heritage and biocultural diversity. In addition, IPBES recognises other worldviews, including those from IPLCs, in which people recognize the diverse entities and elements of nature such as rivers, mountains, plants, animal species, existing within the planet denoted by categories like Mother Earth and systems of life . Among many IPLCs, nature is often viewed as inextricably linked to humans, not as a separate entity. By recognizing this wide understanding of the concept ‘nature’, we are then able to recognize the diversity of values that emerges within these different ways of seeing the world.

Values assessment
values

see Value systems, Value (as principles), Value (as preference), Value (as importance), Value (as measure), Non-anthropocentric value, Intrinsic value, Anthropocentric value, Instrumental value, Relational value, Integrated valuation.

Land degradation and restoration assessment