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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)
pedosphere

A part of the Earth’s surface that contains the soil layer.

Land degradation and restoration assessment
pelagic

Organisms that live in the water column.

Global assessment (1st work programme), Asia-Pacific assessment, Europe and Central Asia assessment, Americas assessment
people and plants initiative

A collaboration initiated in 1992 between the World-Wide Fund for Nature (WWF), UNESCO-MAB and the Royal Botanic Gardens Kew on the promotion of ethnobotany and the equitable and sustainable use of plant resources.

Global assessment (1st work programme)
perceptions

The first stage of the human cognitive process. Perceptions are not neutral as they pass through rational and emotional filters which assess and interpret the relevancy of what people see. These filters are conditioned by individual experience, education, and by collective worldviews. See also Reality; Concepts”; Worldviews”.

Land degradation and restoration assessment
perennial

See annual.

Americas assessment, Europe and Central Asia assessment
permaculture

See Conservation agriculture.

Land degradation and restoration assessment
permafrost

Perennially frozen ground that occurs wherever the temperature remains below 0°C for several years.

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

Perennially frozen ground that occurs wherever the temperature remains below 0°C for several years. Ground (soil or rock and included ice and organic material) that remains at or below 0°C for at least two consecutive years.

Land degradation and restoration assessment, Asia-Pacific assessment, Global assessment (1st work programme)
permeability

The porosity of soils to allow water to pass through it.

Land degradation and restoration assessment
persistent organic pollutant

Organic compounds that are resistant to environmental degradation through chemical, biological, and photolytic processes. Because of their persistence, persistent organic pollutants bioaccumulate with potential adverse impacts on human health and the environment.

Asia-Pacific assessment
persistent organic pollutant

Organic compounds that are resistant to environmental degradation through chemical, biological, and photolytic processes. POPs persist in the environment for long periods, are capable of long-range transport, bioaccumulate in human and animal tissue and biomagnify in food chains, and have potentially significant impacts on human health and the environment. Exposure to POPs can cause serious health problems including certain cancers, birth defects, dysfunctional immune and reproductive systems, greater susceptibility to disease and even diminished intelligence.

Sustainable use assessment
persistent organic pollutant

Chemicals of global concern due to their potential for long-range transport, persistence in the environment, ability to bio-magnify and bio-accumulate in ecosystems, as well as their significant negative effects on human health and the environment.

Global assessment (1st work programme), Land degradation and restoration assessment
persistent organic pollutant

Organic compounds that are resistant to environmental degradation through chemical, biological, and photolytic processes. POPs persist in the environment for long periods, are capable of long-range transport, bioaccumulate in human and animal tissue and biomagnify in food chains, and have potentially significant impacts on human health and the environment. Exposure to POPs can cause serious health problems including certain cancers, birth defects, dysfunctional immune and reproductive systems, greater susceptibility to disease and even diminished intelligence.

Global assessment (1st work programme)
pest

An animal, plant, fungus, or other organism that thrives in places where it is not wanted by people, e.g. in fields, with livestock, in forests, gardens, etc.

Pollination assessment
pesticide

A substance that kills pests (q.v.). Pesticides may be synthetic chemicals, natural chemicals, or biological agents.

Pollination assessment
pesticide

A pesticide is any substance used to kill, repel, or control certain forms of plant or animal life that are considered to be pests.

Americas assessment
phenological shifts

Changes in species phenology, mostly as a result of climate change (Scranton & Amarasekare, 2017).

Global assessment (1st work programme)
phenology

The study of the relationship between climate and the timing of periodic natural phenomena such as migration of birds, bud bursting, or flowering of plants.

Sustainable use assessment
phenology

The study of the relationship between climate and the timing of periodic natural phenomena such as migration of birds, bud bursting, or flowering of plants (IUCN, 2012a).

phenology

The timing of seasonal activities of animals and plants such as bud burst, flowering, fruiting, migration. Also used to refer to the study of such natural phenomena that recur periodically (e.g. development stages, migration) and their relation to climate and seasonal changes.

Land degradation and restoration assessment
phenotype

The characteristics of an individual resulting from interaction between its genotype (genetic constitution) and its environment (IUCN, 2012a). These characteristics often include behavior, physiology (e.g. oxygen consumption, heart rate), life history (e.

Global assessment (1st work programme)
phenotype

The characteristics of an individual resulting from interaction between its genotype (genetic constitution) and its environment (IUCN, 2012a).These characteristics often include behavior, physiology (oxygen consumption, heart rate), life history (e.g. body size, age, offspring number), or morphology (e.g. body proportions).

Sustainable use assessment
phenotypic attributes (biodiversity)

A distinct variant of a phenotypic characteristic of an organism; it may be either inherited or determined environmentally, but typically occurs as a combination of the two (Lawrence, 2005).

Global assessment (1st work programme)
phenotypic attributes (biodiversity)

A distinct variant of a phenotypic characteristic of an organism; it may be either inherited or determined environmentally, but typically occurs as a combination of the two.

Sustainable use assessment
phenotypic plasticity

An ability to alter growth form to suit current conditions without genetic change.

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

The capacity of a single genotype to exhibit a range of phenotypes in response to variation in the environment (Whitman & Agrawal, 2009).

Global assessment (1st work programme)
phylogenetic diversity

Although species richness is a commonly used measure of biodiversity, it fails to capture the reality that species without close relatives contribute more uniqueness than do species with many close relatives. Phylogenetic diversity is used as a general term for a range of measures that consider the total length of all the branches linking a set of species on their phylogeny (“evolutionary tree”) and so reflect species’ evolutionary uniqueness. One of the first such measures is simply the sum of the branch lengths.

Sustainable use assessment
phylogenetic diversity

Although species richness is a commonly used measure of biodiversity, it fails to capture the reality that species without close relatives contribute more uniqueness than do species with many close relatives. Phylogenetic diversity is used as a general te.

phylogenetic diversity

Phylogenetic diversity (PD) describes the breadth of evolutionary history that is represented among the organisms found in a particular area. It can capture both the diversity of ecological functions that are represented, and perhaps more importantly for human well-being, the evolutionary potential of a community to respond to future stressors.

Americas assessment
phylogenetic endemism

Is a measure of spatial restriction of phylogenetic diversity. In other words, PE is a relative measure of endemism that represents the degree to which lineages or branches of the tree of life (calculated in my) are restricted spatially.

Americas assessment
phylum

A major taxonomic grouping of animals linked by having a similar general body plan and thought to be a clade. In plants the similar category is called a division (Lawrence, 2005).

Global assessment (1st work programme)
phytophilia

The positive effect of green vegetation in landscapes on human beings.

Europe and Central Asia assessment
phytoplankton

The autotrophic components of the plankton community and a key part of oceans, seas and freshwater basin ecosystems.

Asia-Pacific assessment
planetary boundary

The safe operating space for humanity with respect to the Earth system and are associated with the planet’s biophysical subsystems or processes.

Land degradation and restoration assessment
plankton

Aquatic organisms that drift or swim weakly. Phytoplankton are the plant forms of plankton (e.g., diatoms), and are the dominant plants in the sea. Zooplankton are the animal forms of plankton. Picoplankton are all forms of plankton which size is comprised between 0.2 and 2 micrometers (mostly bacteria).

Sustainable use assessment
plankton

Typically microscopic aquatic organisms that drift or swim weakly. Phytoplankton are the plant forms of plankton (e.g. diatoms), and are the dominant plants in the sea. Zooplankton are the animal forms of plankton.

Europe and Central Asia assessment, Global assessment (1st work programme)
plankton

Aquatic organisms that drift or swim weakly. Phytoplankton are the plant forms of plankton (e.g. diatoms), and are the dominant plants in the sea. Zooplankton are the animal forms of plankton.

Americas assessment, Asia-Pacific assessment
planning and zoning

Zoning is a planning control tool for regulating the built environment and creating functional real estate markets.

Land degradation and restoration assessment
plant breeding system

Attributes of the flowers within an individual that may influence gamete transfer among conspecifics.

Pollination assessment
plant mating system

The mating system provides a description of the distribution of mating unions in a population. The main mating systems in plants are outcrossing (cross-fertilisation), autogamy (self-fertilisation) and apomixis (asexual reproduction without fertilization). Mixed mating systems, where plants use two or three mating systems, are not uncommon.

Pollination assessment
plant-pollinator network

A group of local plant and pollinator species and the links among them, which establish who interacts with whom (i.e. qualitative network). A network can also include a measure of the strength of each individual interaction link (i.e. quantitative network.

Pollination assessment
plantation forest

Forests where trees have been deliberately planted (i.e. have not regenerated naturally) and are typically grown for the production of wood or fibre, in some cases they may replace grasslands or other non-forest vegetation types. They are often of exotic tree species.

Land degradation and restoration assessment
plenary

Within the context of IPBES - the decision-making body comprising all of the members of IPBES.

Sustainable use assessment, Europe and Central Asia assessment, Americas assessment, Scenarios and models assessment, Land degradation and restoration assessment, Asia-Pacific assessment
poaching

Animal killing or trapping without the approval of the people who controls or own the land (Survival, 2018).

Global assessment (1st work programme)
poaching

Poaching is defined as the illegal removal of wild species from a place where such practices are specially reserved or forbidden.

Sustainable use assessment
point source

Any single identifiable source of pollution from which pollutants are discharged, such as a pipe, ditch, ship or factory smokestack.

Americas assessment
policy

A course or principle of action adopted or proposed by an organization or individual.

Scenarios and models assessment
policy coherence

The systematic promotion of mutually reinforcing policy actions across government departments and agencies creating synergies towards achieving the agreed objectives.

Land degradation and restoration assessment
policy context

see decision context.

Scenarios and models assessment
policy cycle

A framework describing the policy process in terms of four linked phases: agenda setting, policy design, policy implementation, and policy review.

Scenarios and models assessment