A species whose impact on the community or ecosystem is disproportionately large relative to its abundance. Effects can be produced by consumption (trophic interactions), competition, mutualism, dispersal, pollination, disease, or habitat modification (non-trophic interactions).

People and organizations who both can influence and become affected by decisions - that is, in certain contexts, they serve as influencers, while at the same time are involved in actual decision making.

Sites contributing significantly to the global persistence of biodiversity. They represent the most important sites for biodiversity worldwide, and are identified nationally using globally standardised criteria and thresholds.

A large brown seaweed that typically has a long, tough stalk with a broad frond divided into strip.

Justice traditionally refers to the fair treatment of people, or ‘what we owe to each other’, but its scope may also be extended to include duties to other units of nature such as animals, rivers or Pachamama. Source Chapter 1. See Distributive justice, Ecological justice, Environmental justice, Epistemic justice, Procedural justice, Recognition, Retributive justice.

See ‘Co-production’.

See 'Rebound effect'.

The IUCN Red List of Threatened Species provides taxonomic, conservation status and distribution information on taxa that have been globally evaluated using the IUCN Red List Categories and Criteria. This system is designed to determine the relative risk of extinction, and the main purpose of the IUCN Red List is to catalogue and highlight those taxa that are facing a higher risk of global extinction (i.e. as Critically Endangered, Endangered and Vulnerable).

The IUCN Red List of Threatened Species provides taxonomic, conservation status and distribution information on plants, fungi and animals that have been globally evaluated using the IUCN Red List Categories and Criteria.

The IUCN Red List is an indicator of the health of biodiversity. It provides taxonomic, conservation status and distribution information on plants, fungi and animals that have been globally evaluated using the IUCN Red List Categories and Criteria. This system is designed to determine the relative risk of extinction, and the main purpose of the IUCN Red List is to catalogue and highlight those plants and animals that are facing a higher risk of global extinction.