process-based model |
A model in which relationships are described in terms of explicitly stated processes or mechanisms based on established scientific understanding, and model parameters therefore have clear ecological interpretation, defined beforehand.
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Scenarios and models assessment |
process-based model |
See models.
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Europe and Central Asia assessment |
producer surplus |
The amount that producers benefit by selling at a market price that is higher than the least that they would be willing to accept for that good or service. It is roughly equal to profit (q.v.): producers are not normally willing to sell at a loss, and are normally indifferent to selling at a break-even price.
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Pollination assessment |
production function |
A mathematical equation or graph that shows the relationship between physical inputs and physical outputs for a business.
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Pollination assessment |
profit |
The financial gain, especially the difference between the amount earned and the amount spent in buying, operating, or producing something.
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Pollination assessment |
projection |
Any description of the future, and the pathway leading to it.
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Scenarios and models assessment |
propagule pressure |
The quantity, quality and frequency of propagules (such as spores, eggs, larvae, or adults) released in a given location. This term can be seen as the introduction effort, i.e. the pool of individuals introduced in a new ecosystem/area/region and the number of times it is released.
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Americas assessment |
propagule pressure |
a measure of introduction intensity, including release from captivity or cultivation, comprising both the number of individuals of a species introduced per introduction (propagule size) and the frequency of introductions
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Invasive alien species assessment |
protected area |
A protected area is a clearly defined geographical space, recognized, dedicated and managed, through legal or other effective means, to achieve the long-term conservation of nature with associated ecosystem services and cultural values.
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Asia-Pacific assessment, Europe and Central Asia assessment, Americas assessment, Africa assessment, Sustainable use assessment, Global assessment (1st work programme), Pollination assessment |
protected area downgrading, downsizing and degazettement |
Refers to legal changes that ease restrictions on the use of a protected area, shrink a protected area's boundaries or eliminate legal protections entirely (Mascia & Pailler, 2011).
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Global assessment (1st work programme) |
protected area |
A clearly defined geographical space, recognized, dedicated and managed, through legal or other effective means, to achieve the long-term conservation of nature with associated ecosystem services and cultural values.
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Land degradation and restoration assessment |
provisioning service |
The products people obtain from ecosystems; may include food, freshwater, timber, fibres, medicinal plants.
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Africa assessment, Asia-Pacific assessment, Sustainable use assessment |
public-private partnership |
A long-term contract between a private party and a government entity, for providing a public asset or service, in which the private party bears significant risk and management responsibility and remuneration is linked to performance.
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Land degradation and restoration assessment |
purchasing power parity |
An economic theory that estimates the amount of adjustment needed on the exchange rate between countries in order for the exchange to be equivalent to each currency’s purchasing power. It states that exchange rates between currencies are in equilibrium when their purchasing power is the same in each of the two countries. This means that the exchange rate between two countries should equal the ratio of the two countries’ price level of a fixed basket of goods and services.
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Pollination assessment |