Essential Biodiversity Variables

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Essential Biodiversity Variables (EBVs) is a putative set of parameters intended to be the minimum set of broadly agreed upon necessary and sufficient biodiversity variables for at least national to global monitoring, researching, and forecasting of biodiversity. [1] They are being developed by an interdisciplinary group of governmental and academic research partners. The initiative aims for a harmonised global biodiversity monitoring system. EBVs would be used to inform biodiversity change indicators, such as the CBD Biodiversity Indicators for the Aichi Targets. [2]

Contents

The concept is partly based on the earlier Essential Climate Variables. [3] [4] It can be generalised as the minimum set of variables for describing and predicting a system's state and dynamics. Areas with more developed EV lists include climate, ocean, and biodiversity. [5]

EBV Classes / Categories

The current candidate EBVs occupy six classes of Essential Biodiversity Variable: genetic composition, species populations, species traits, community composition, ecosystem structure, and ecosystem function. [1] Within each class are a few to several variables.

EBV ClassEBVNotes
Genetic compositionCo-ancestry
Allelic diversity
Population genetic differentiation
Breed and variety diversity
Species populationsSpecies distributionAddressed in. [6] Track from space. [7]
Population abundanceAddressed in. [6]
Population age / size structure
Species traits

(subject of [8] )

PhenologyTrack from space. [7] GlobDiversity RS-enabled EBV (land surface phenology). [9]
Body massVegetation height—track from space. [7]
Natal dispersal distance
Migratory behaviour
Demographic traits
Physiological traitsTrack from space. [7] GlobDiversity RS-enabled EBV (canopy chlorophyll concentration). [9]
Community compositionTaxonomic diversity
Species interactions
Ecosystem functionNet primary productionTrack from space. [7]
Secondary production
Nutrient retention
Disturbance regimeTrack from space. [7] Should not be a candidate EBV, due to being non-biological in nature. [10]
Ecosystem structureHabitat structure
Ecosystem extent and fragmentationTrack from space. [7] GlobDiversity RS-enabled EBV (fragmentation). [9]
Ecosystem composition by functional type

Associated projects and organisations

As of 2017, participants in the project consist of the GlobDiversity project (funded by the European Space Agency) [11] under GEO BON (Group on Earth Observations Biodiversity Observation Network; a cooperative project of international universities), [12] and the GLOBIS-B project (Global Infrastructures for Supporting Biodiversity Research; funded by the EU Horizon 2020 programme) [13]

Development

The concept was first proposed in 2012 [14] [15] and developed in the following years. [3] [5] [7]

The GLOBIS-B global cooperation project, aimed to advance the challenge of practical implementation of EBVs by supporting interoperability and cooperation activities among diverse biodiversity infrastructures, started in 2015. [16] The GlobDiversity project of GEO BON, led by the University of Zurich, started in 2017, focusing on specification and engineering of three RS-enabled EBVs. [9] [17]

The scope and screening of potential variables is under ongoing discussion. [10] [18] [19] [8] [20] [21]

This includes definition of the species distribution EBV and population abundance EBV, operationalisation of the EBV framework, data and tools for building EBV data products, workflow for building EBV data products, metadata and data sharing standards; [6] and possible integration of abiotic variables (e.g. those emphasised in the Ecosystem Integrity framework) with biotic variables (emphasised in the EBV framework) to achieve comprehensive ecosystem monitoring. [22]

"EBV data products" refers to the end product in the EBV information supply chain, from raw observations, to EBV-usable data, to EBV-ready data, to EBV data products. Each of these three types of EBV datasets could be used to produce indicators. [6] Data sources for EBVs are categorised into four types: extensive and intensive monitoring schemes, ecological field studies, and remote sensing. [23] Each have their own often complementary properties, implying that data integration will be important for creation of representative EBVs, as well as identifying and filling data gaps.

Related Research Articles

<span class="mw-page-title-main">Biodiversity</span> Variety and variability of life forms

Biodiversity or biological diversity is the variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic, species, and ecosystem level. Biodiversity is not distributed evenly on Earth; it is usually greater in the tropics as a result of the warm climate and high primary productivity in the region near the equator. Tropical forest ecosystems cover less than 10% of earth's surface and contain about 90% of the world's species. Marine biodiversity is usually higher along coasts in the Western Pacific, where sea surface temperature is highest, and in the mid-latitudinal band in all oceans. There are latitudinal gradients in species diversity. Biodiversity generally tends to cluster in hotspots, and has been increasing through time, but will be likely to slow in the future as a primary result of deforestation. It encompasses the evolutionary, ecological, and cultural processes that sustain life.

<span class="mw-page-title-main">Conservation biology</span> Study of threats to biological diversity

Conservation biology is the study of the conservation of nature and of Earth's biodiversity with the aim of protecting species, their habitats, and ecosystems from excessive rates of extinction and the erosion of biotic interactions. It is an interdisciplinary subject drawing on natural and social sciences, and the practice of natural resource management.

<span class="mw-page-title-main">Habitat conservation</span> Management practice for protecting types of environments

Habitat conservation is a management practice that seeks to conserve, protect and restore habitats and prevent species extinction, fragmentation or reduction in range. It is a priority of many groups that cannot be easily characterized in terms of any one ideology.

An ecological or environmental crises occurs when changes to the environment of a species or population destabilizes its continued survival. Some of the important causes include:

<span class="mw-page-title-main">Wildlife conservation</span> Practice of protecting wild plant and animal species and their habitats

Wildlife conservation refers to the practice of protecting wild species and their habitats in order to maintain healthy wildlife species or populations and to restore, protect or enhance natural ecosystems. Major threats to wildlife include habitat destruction, degradation, fragmentation, overexploitation, poaching, pollution, climate change, and the illegal wildlife trade. The IUCN estimates that 42,100 species of the ones assessed are at risk for extinction. Expanding to all existing species, a 2019 UN report on biodiversity put this estimate even higher at a million species. It is also being acknowledged that an increasing number of ecosystems on Earth containing endangered species are disappearing. To address these issues, there have been both national and international governmental efforts to preserve Earth's wildlife. Prominent conservation agreements include the 1973 Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) and the 1992 Convention on Biological Diversity (CBD). There are also numerous nongovernmental organizations (NGO's) dedicated to conservation such as the Nature Conservancy, World Wildlife Fund, the Wild Animal Health Fund and Conservation International.

<span class="mw-page-title-main">Guinean forest–savanna mosaic</span> Tropical forest, savanna, and grassland ecoregion in West Africa

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<span class="mw-page-title-main">Marxan</span>

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Ecological threshold is the point at which a relatively small change or disturbance in external conditions causes a rapid change in an ecosystem. When an ecological threshold has been passed, the ecosystem may no longer be able to return to its state by means of its inherent resilience. Crossing an ecological threshold often leads to rapid change of ecosystem health. Ecological threshold represent a non-linearity of the responses in ecological or biological systems to pressures caused by human activities or natural processes. Critical load, regime shift, critical transition and tipping point are examples of other closely related terms.

Ecological forecasting uses knowledge of physics, ecology and physiology to predict how ecological populations, communities, or ecosystems will change in the future in response to environmental factors such as climate change. The goal of the approach is to provide natural resource managers with information to anticipate and respond to short and long-term climate conditions.

<span class="mw-page-title-main">Defaunation</span> Loss or extinctions of animals in the forests

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