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)
cryptogenic species

a species, which cannot be reliably demonstrated as being either alien or native

Invasive alien species assessment
cultural ecosystem services

The Millennium Ecosystem Assessment (Sarukhán & Whyte, 2005) defined cultural ecosystem services as the nonmaterial benefits people obtain from ecosystems through spiritual enrichment, cognitive development, reflection, recreation, and aesthetic experiences. Cultural ecosystem services have been included in many other typologies of ecosystem services and referred to variously as cultural services (Constanza, 1997), life-fulfilling functions (Daily, 1999), information functions (de Groot et al., 2002), amenities and fulfilment (Boyd & Banzhaf, 2007), cultural and amenity services (de Groot et al., 2010, Kumar 2010), or socio-cultural fulfilment (Wallace, 2007).

Land degradation and restoration assessment
cultural change

Cultural change is a continuous process in any society, which can vary from gradual to stochastic, resulting from interactions between processes that are internal (ex. needs, local changes, crisis, mobility, ideas, invention and innovation, conflicts, etc.) and external (ex. diffusion, external agents, political and economic forces, conflicts, etc.) (Berry, 2008; Redfield et al., 1936). Cultural change is interpreted differently depending on theoretical orientation, such as diffusionism, modernization theory, world system theory, neocolonialism, globalization, among others (see Peña, 2005; Rudmin, 2009; Santos-Granero, 2009). Culture change can be selective or systemic and most often involves resistance and conflicts but can also lead to adaptation and resilience in changing contexts and environments.

Global assessment (1st work programme), Sustainable use assessment
cultural continuity

Cultural continuity has been conceptualized within Indigenous health research that builds on cultural connectedness to emphasize the importance of intergenerational cultural connectedness, which is maintained through intact families and the engagement of elders, who pass traditions to subsequent generations. Cultural continuity also situates culture as being dynamic through the maintenance of collective memory, which may change over time.

Sustainable use assessment
cultural diversity

As stated in the UNESCO Universal Declaration on Cultural Diversity, Culture takes diverse forms across time and space. This diversity is embodied in the uniqueness and plurality of the identities of the groups and societies making up humankind. As a source of exchange, innovation and creativity, cultural diversity is as necessary for humankind as biodiversity is for nature. In this sense, it is the common heritage of humanity and should be recognized and affirmed for the benefit of present and future generations..Cultural diversity widens the range of options open to everyone; it is one of the roots of development, understood not simply in terms of economic growth, but also as a means to achieve a more satisfactory intellectual, emotional, moral and spiritual existence.

Sustainable use assessment
cultural ecosystem services

A category of ecosystem services first developed in the Millenium Ecosystem Assessment (2005) to refer to the nonmaterial benefits people obtain from ecosystems through spiritual enrichment, cognitive development, reflection, recreation, and aesthetic experience, including, knowledge systems, social relations, and aesthetic values. In this assessment, cultural ecosystem services are included as part of both material and non-material Nature’s contributions to people.

Sustainable use assessment
cultural ecosystem services

A category of ecosystem services first developed in the Millenium Ecosystem Assessment (2005) to refer to the nonmaterial benefits people obtain from ecosystems through spiritual enrichment, cognitive development, reflection, recreation, and aesthetic experience, including, e.g. knowledge systems, social relations, and aesthetic values (Millenium Ecosystem Assessment, 2005). In the Global Assessment, cultural ecosystem services are included as part of both material and non-material nature’s contributions to people.

cultural ecosystem services

The Millennium Ecosystem Assessment defined cultural ecosystem services as the nonmaterial benefits people obtain from ecosystems through spiritual enrichment, cognitive development, reflection, recreation, and aesthetic experiences. Cultural ecosystem services have been included in many other typologies of ecosystem services and referred to variously as cultural services, life-fulfilling functions, information functions, amenities and fulfillment, cultural and amenity services, or socio-cultural fulfillment.

Asia-Pacific assessment
cultural identity

Cultural identity is the identity or feeling of belonging to, as part of the self-conception and self-perception to nationality, ethnicity, religion, social class, generation, locality and any kind of social group that have its own distinct culture. In this way that cultural identity is both characteristic of the individual but also to the culturally identical group that has its members sharing the same cultural identity.

Sustainable use assessment
cultural keystone species

The culturally salient species that shape in a major way the cultural identity of a people, as reflected in the fundamental roles these species have in diet, materials, medicine, and/or spiritual practices.

Global assessment (1st work programme)
cultural keystone species

Culturally keystone species designate species whose existence and symbolic value shape in a major way and over time, the cultural identity of a people, as reflected in the fundamental roles these species have in diet, materials, medicine, and/or spiritual practices.

Sustainable use assessment
cultural landscape

Cultural landscapes express the long-term co-evolution and relationships between people and nature, influenced by internal and external forces affecting the aesthetic and productive configuration of land management, water bodies, wildlife, property systems, infrastructure and human settlements, and which are both a source and a product of changing social, institutional, economic, and cultural systems.

Global assessment (1st work programme), Sustainable use assessment
cultural values

Cultural values are shared social values and norms, which are learned and dynamic, and which underpin attitudes and behavior and how people respond to events and opportunities, and affects the hierarchy of values people assign to objects, knowledge, stories, feelings, other beings, forms of social expressions, and behaviors.

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

A commonly accepted definition of culture refers to the system of shared beliefs, values, customs, behaviours, and artifacts that the members of society use to cope with their world and with one another, and that are transmitted from generation to generation through learning.

Global assessment (1st work programme)
culture

Culture is defined as a key determinant of, for example, what is defined as suitable food and preferred approaches to supporting human health.

Sustainable use assessment
cumulative impacts

An impact produced over a period of time.

Land degradation and restoration assessment
customary land tenure

The socially-embedded systems and institutions used within communities to regulate and manage land use and access, and which derive from the community itself rather than from the state.

Sustainable use assessment, Global assessment (1st work programme)
customary law

Law consisting of customs that are accepted as legal requirements or obligatory rules of conduct; practices and beliefs that are so vital and intrinsic a part of a social and economic system that they are treated as if they were laws.

Sustainable use assessment
customary law

Customary law forms part of forms part of international and domestic law and stems from the customary norms of a particular group of peoples.

Asia-Pacific assessment
customary law

Law based on tradition in communities where the authority of traditional leadership is recognised. It exists where there is a commonly repeated practice which is accepted as law by the members of a community.

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

Law consisting of commonly repeated customs, practices and beliefs that are accepted as legal requirements or obligatory rules of conduct.

Europe and Central Asia assessment
customary practices

See Customary law.

Land degradation and restoration assessment
customary rights

Rights, such as land rights or political rights, that are granted by either customary or statutory law. Customary rights exist where there is a consensus of relevant actors considering them to be ‘law’.

Global assessment (1st work programme), Sustainable use assessment
customary sustainable use

Uses of biological resources in accordance with traditional cultural practices that are compatible with conservation or sustainable use requirements.

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

The place or type of site where an organism or population naturally occurs. Also used to mean the environmental attributes required by a particular species or its ecological niche.

Americas assessment, Land degradation and restoration assessment, Africa assessment, Europe and Central Asia assessment, Asia-Pacific assessment, Sustainable use assessment
habitat connectivity

The degree to which the landscape facilitates the movement of organisms (animals, plant reproductive structures, pollen, pollinators, spores, etc.) and other environmentally important resources (e.g. nutrients and moisture) between similar habitats. Connectivity is hampered by fragmentation (q.v.).

Global assessment (1st work programme), Pollination assessment, Land degradation and restoration assessment, Europe and Central Asia assessment, Americas assessment
habitat degradation

A general term describing the set of processes by which habitat quality is reduced. Habitat degradation may occur through natural processes (e.g. drought, heat, cold) and through human activities (forestry, agriculture, urbanization).

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

The ability of soil or soil materials to serve as a habitat for micro-organisms, plants, soil- living animals and their interactions.

Land degradation and restoration assessment
habitat fragmentation

A general term describing the set of processes by which habitat loss results in the division of continuous habitats into a greater number of smaller patches of lesser total and isolated from each other by a matrix of dissimilar habitats. Habitat fragmentation may occur through natural processes (e.g. forest and grassland fires, flooding) and through human activities (forestry, agriculture, urbanization).

Sustainable use assessment, Africa assessment, Land degradation and restoration assessment, Europe and Central Asia assessment, Americas assessment, Asia-Pacific assessment
habitat heterogeneity

The number of different habitats in a landscape.

Global assessment (1st work programme)
habitat degradation

A general term describing the set of processes by which habitat quality is reduced. Habitat degradation may occur through natural processes (e.g. drought, heat, cold) and through human activities (forestry, agriculture, urbanization).

Sustainable use assessment
habitat modification

Changes in an area's primary ecological functions and species composition due to human activity and/or non-native species invasion.

Global assessment (1st work programme)
habitat service

The importance of ecosystems to provide living space for resident and migratory species (thus maintaining the gene pool and nursery service).

Europe and Central Asia assessment, Land degradation and restoration assessment
habitat specialist

Species that require very specific habitats and resources (e.g. narrow range of food sources or cover types) to thrive and reproduce.

Global assessment (1st work programme)
habitat

The place or type of site where an organism or population naturally occurs.

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

the area, characterized by its abiotic and biotic properties, that is habitable by a particular species

Invasive alien species assessment
harmful algal bloom

They occur when colonies of algae (simple plants that live in the sea and freshwater) grow out of control and produce toxic or harmful effects on people, fish, shellfish, marine mammals and birds.

Asia-Pacific assessment
harmful algal bloom

Harmful algal blooms (HABs) occur when colonies of algae grow out of control and produce toxic or harmful effects on people, fish, shellfish, marine mammals and birds. The human illnesses caused by HABs, though rare, can be debilitating or even fatal.

Global assessment (1st work programme)
harmonization

The process of bringing together, and comparing, models or scenarios to make them compatible or consistent with one another.

Scenarios and models assessment, Sustainable use assessment, Pollination assessment, Africa assessment, Asia-Pacific assessment
harmonization

The process of bringing something together, and comparing (e.g. models or scenarios) to facilitate compatibility or consistency.

Europe and Central Asia assessment
hazard

A process, phenomenon or human activity that may cause loss of life, injury or other health impacts, property damage, social and economic disruption or environmental degradation. Hazards that this assessment discusses are mostly environmental hazards (chemical, natural and biological hazards), while cognizant that many hazards are socio- natural, in that they are associated with a combination of natural and anthropogenic factors. Natural hazards are predominantly associated with natural processes and phenomena, including geological or geophysical hazards that originate from internal earth processes (earthquakes, volcanic activities, landslides, tsunamis), and hydrometeorological hazards, which are of atmospheric, hydrological or oceanographic origin (tropical cyclones, floods, drought; heatwaves, and storm surges). Biological hazards are of organic origin or conveyed by biological vectors, including pathogenic microorganisms, toxins and bioactive substances. Examples are bacteria, viruses or parasites, as well as venomous wildlife and insects, poisonous plants and mosquitoes carrying disease-causing agents.

Sustainable use assessment
heat island effect

Describes built up areas that are hotter than nearby rural areas. Heat islands can affect communities by increasing summertime peak energy demand, air conditioning costs, air pollution and greenhouse gas emissions, heat-related illness and mortality, and water quality.

Global assessment (1st work programme)
hedgerow

A row of shrubs or trees that forms the boundary of an area such as a garden, field, farm, road or right-of-way.

Americas assessment, Europe and Central Asia assessment
hedonic pricing

An economic valuation approach that utilizes information about the implicit demand for an environmental attribute of marketed commodities.

Europe and Central Asia assessment
herbicide

A substance that kills or inhibits the germination, growth and development of plants. Herbicides may be synthetic chemicals, natural chemicals, or biological agents.

Pollination assessment
holocene

The Holocene is the current geological epoch. It began after the Pleistocene, approximately 11,650 calendar years before present.

Global assessment (1st work programme)
homegarden

Yard areas surrounding a house for vegetable and fruit production and keeping of domestic animals. In many regions homegardens contain wild species utilized as medicinal plants, timber or other uses.

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

Organisms (vertebrates) with a constant and high body temperature, with a high level of energy exchange.

Global assessment (1st work programme)
homogenisation

When used in the ecological sense homogenisation means a decrease in the extent to which communities differ in species composition.

Pollination assessment
homogenisation

When used in the ecological sense homogenisation means a decrease in the extent to which communities differ in species or functional composition.

Sustainable use assessment