Biodiversity statistics

Data from April 2021

Planned article update: December 2021


More than 440 000 km2 of the EU‘s marine waters were protected as marine Natura 2000 areas in 2019, an increase of 5% compared with 2018 and 150% since 2013.

In 2019, Germany protected the largest share of its marine waters as Natura 2000 (46%), followed by Belgium (37%) and France (36%).

In 2019, the largest national network of terrestrial Natura 2000 sites was located in Spain, covering 138 111 km2, followed by France (70 875 km2) and Poland (61 168 km2).

Share of protected land and marine waters (as Natura 2000), 2019
(thousand km²)
Source: EEA / European topic centre on biodiversity / European Commission; Eurostat (env_bio1)

Biodiversity encompasses the number, variety and variability of plants, animals and other organisms, including humans. We depend on the natural richness of our planet for the food, energy, raw materials, clean air and water that make life possible and underpin our economies; therefore, it is essential to prevent a loss of biodiversity — any loss may not only undermine the natural environment, but also our economic and social goals. At the end of 2019, the European Commission adopted The European Green Deal, an ambitious vision for a sustainable, green transition that is just and socially fair. Biodiversity is one of its key policy areas. In May 2020, the European Commission adopted the EU Biodiversity Strategy for 2030 to halt the decline in biodiversity and bring nature back into our lives. This article examines two indicators for biodiversity in the European Union — information on protected areas (for terrestrial and marine biodiversity) and bird populations.

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Natura 2000 - the cornerstone of biodiversity protection in the EU

The EU has the largest coordinated network of protected areas in the world; it is known as Natura 2000 and consist of around 27 000 sites. The Natura 2000 network stems from the legal basis provided by the 'Habitats Directive' and the 'Birds Directive' (the two known as 'the Nature Directives'). Areas to be protected under these two directives are proposed by the EU Member States. Natura 2000 areas do not necessarily overlap with protected areas designated under national legislation of Member States - its objective is to ensure the preservation of most valuable and threatened species and habitats of the EU. Economic activities are allowed under Natura 2000 as long as they do not affect the conservation status of species or habitats in a negative way.

Protected terrestrial areas

Nearly 764 000 km2 of the EU‘s terrestrial area were protected or proposed for protection as Natura 2000 sites as of 2019, i.e. 18 % of the total land area of the EU. The largest network of terrestrial Natura 2000 areas in absolute terms is located in Spain - in 2019 it covered 138 111 km2. This is almost twice the size of the next largest national Natura 2000 network - in France (70 875 km2) - and it is larger than the country area of the 19 smallest EU Member States. Figure 1 shows the total extent of the national terrestrial Natura 2000 network for all Member States for 2019.

The process of designating terrestrial Natura 2000 areas is well advanced; therefore, the total extent of the national network of terrestrial Natura 2000 in most Member States in recent years remained unchanged. The only country where an increase of more than 1 % in the terrestrial Natura 2000 network was recorded between 2018 and 2019 was Bulgaria (1.3 %).

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Figure 1: Natura 2000 protected terrestrial area, 2019
Source: EEA / European topic centre on biodiversity; Eurostat (env_bio1)

Some Member States protect a large proportion of their land as Natura 2000 sites as shown in Figure 2. All EU Member States of the Balkan Peninsula have designated more than 20 % of their land area as Natura 2000; most notably Slovenia (38 %), Croatia (37 %) and Bulgaria (35 %). Other Member States which protect more than a quarter of their land as terrestrial Natura 2000 network are Slovakia (30 %), Cyprus (29 %), and Spain, Luxembourg and Greece (27 % each). At the other end of the spectrum are Denmark (8 %), Sweden and Latvia (both 12 %), and six other Member States that have designated 13 % of their land territory as Natura 2000 sites. It is important to note that, in general, biodiversity in Europe decreases from south to north (or from the Equator to the Pole) which partly explains the geographical pattern we observe.

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Figure 2: Share of protected land and marine waters (as Natura 2000), 2019
(thousand km²)
Source: EEA / European topic centre on biodiversity / European Commission; Eurostat (env_bio1)

Protected marine areas

More than 440 000 km2 of the EU‘s marine waters were protected as marine Natura 2000 areas in 2019. This represents 8 % of EU marine waters. Germany protected the largest share of its marine waters as Natura 2000 (46 %), followed by Belgium (37 %) and France (36 %). The smallest shares of protected marine waters were observed for Ireland, Italy and Portugal (2 % each) and Greece, Malta and Slovenia (5 % each) (Figure 2). These shares have been calculated using the area of marine waters reported for the 'Marine Strategy Framework Directive' as total.

The area of protected marine waters increased, for the EU as a whole, by 5 % between 2018 and 2019, and by almost 150 % since 2013 (i.e. since the latest Member State joined the EU). In absolute terms, the largest national network of marine Natura 2000 areas is located in coastal waters around France (132 689 km2). Together with the second largest national network - in Spain (84 405 km2) - these account for almost half (49 %) of the total marine Natura 2000 area of the EU.

Unlike the terrestrial Natura 2000 sites, where the designation process is much more advanced and the coverage in Member States has remained largely unchanged for the past years, for marine areas some Member States achieved major progress in their designation between 2018 and 2019. These were, in particular, Cyprus (more than 6300 % or ca 8 300 km2), Italy (76 % or ca 5 200 km2), Portugal (12 % or ca 4 400 km2) Croatia (5 % or ca 300 km2) and France (2 % or ca 3 100 km2).

Figure 3 shows the progress of the designation of marine Natura 2000 areas by Member State between 2018 and 2019, and the overall progress of the EU between 2013 and 2019.

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Figure 3: Natura 2000 protected marine area in the EU and Member States (MS)
(thousand km²)
Source: EEA / European topic centre on biodiversity; Eurostat (env_bio1)

The condition of protected areas

Eurostat does not collect or republish data about qualitative aspects of protected areas (i.e. their condition or "conservation status") which may provide a better indication of the state and trends in biodiversity than the size or coverage of protected areas. The European Environment Agency concluded in their report The European environment - state and outlook 2020 that 60 % of species and 77 % of habitats listed in the Habitats Directive showed predominantly unfavourable conservation status.

Populations of common birds

Being relatively easy to monitor, compared with many other groups of organisms, and sensitive to changes in the environment, including pollution and habitat modification, birds have been used as an important indicator of the state of the environment.

Birds in the EU are less abundant than a few decades ago. However, after many years of decline, it appears that the numbers of common birds have started to stabilize or even increase. This is particularly true for common forest birds whose population is estimated to have increased by 9 % between 2000 and 2019. The EU's population of all common bird species is estimated to have declined by 4 % but is showing signs of recovery in recent years, whereas the population of common farmland birds is in decline (-17 % since 2000) (Figure 4).

Bird monitoring in the EU is conducted under the umbrella of the PanEuropean Common Bird Monitoring Scheme. The scheme helps standardise data collection and analyses across countries and produces three indices for the populations of common birds – index for all common birds (including 168 species), index for common farmland birds (39 species) and index for common forest birds (34 species).

Large losses in populations of common farmland bird species are, in general, thought to be attributed to changes in land use and agricultural practices, and in particular the disappearance of small, non-productive landscape elements, such as hedges and windbreaks, and the use of pesticides.

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Figure 4: Common bird indices, EU, 1990–2019
(aggregated index of population estimates of selected groups of breeding bird species, 2000 = 100)
Source: EBCC / BirdLife / RSPB / Czech Society for Ornithology; Eurostat (env_bio3)

Source data for tables and graphs

Data sources


Annual data are available on terrestrial and marine areas protected under the Habitats Directive on the conservation of natural habitats and of wild fauna and flora. The Directive protects over 1 000 animal and plant species and more than 200 types of habitat (for example, special types of forests, meadows or wetlands), which are considered to be of European importance. It has led to the creation of a network of protected special areas of conservation (SACs). Together with the special protection areas (SPAs) defined by the Birds Directive of 2 April 1979, codified by Directive 2009/147/EU of 30 November 2009, these areas make up the Natura 2000 network of protected areas, designed to ensure the long-term survival of Europe's most valuable and threatened species and habitats.


Across the EU, the conservation of wild birds is covered by the Birds Directive. Birds are considered to be good proxies for measuring the diversity and integrity of ecosystems as they tend to be near the top of the food chain, have large ranges and the ability to move elsewhere when their environment becomes unsuitable; they are therefore responsive to changes in their habitat. Birds are thus a recognized ecological indicator taxon.

The EU indices are based on data from 25 EU Member States (data for Croatia and Malta are not available), derived from annually operated surveys of national breeding birds collated by the Pan-European Common Bird Monitoring Scheme (PECBMS); these data are considered to be a good proxy for the whole of the EU.

Three different indices are presented:

  • Common farmland birds (39 species)
  • Common forest birds (34 species)
  • All common birds (168 species)

For the first two categories, the bird species have a high dependence on agricultural or on forest habitats in the nesting season and for feeding. Both groups comprise year-round residents and migratory species. The index ‘All common birds’ comprises farmland and forest species together with other common species that are generalists, meaning that they occur in many different habitats or are particularly adapted to life in cities.


In 1998, the EU adopted a biodiversity strategy. Four action plans covering the conservation of natural resources, agriculture, fisheries, and economic and development cooperation were subsequently agreed as part of this strategy in 2001. As a follow-up, in May 2011, the European Commission adopted Communication 'Our life insurance, our natural capital: an EU biodiversity strategy to 2020'), aimed at halting the loss of biodiversity and ecosystem services in the EU by 2020. The strategy had six main targets covering the areas of nature conservation, ecosystem services, sustainable agriculture and forestry, management of fish stocks, control over invasive alien species and the EU contribution to averting biodiversity loss at the global level, and 20 actions to help reach the main goal. In 2015, the European Commission reviewed the EU biodiversity strategy to 2020 at mid-term to determine whether we were on track to reach its targets. The review found that no significant progress towards the 2020 headline target had been made. To step up actions and bring us closer to meeting the goals of the EU Biodiversity Strategy to 2020, in May 2017, the European Commission adopted the Nature Action Plan (An Action Plan for nature, people and the economy).

The EU’s biodiversity strategy is based on the implementation of two landmark Directives, Directive 79/409/EEC on the conservation of wild birds ('Birds Directive') and Directive 92/43/EEC on the conservation of natural habitats and of wild fauna and flora ('Habitats Directive').

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External links

Biodiversity (t_env_biodiv)
Common bird index (EU aggregate) (t2020_rn130)
Surface of marine sites designated under Natura 2000 (source: DG ENV, EEA) (sdg_14_10)
Surface of terrestrial sites designated under Natura 2000 (source: DG ENV, EEA) (sdg_15_20)
Biodiversity (env_biodiv)
Natura 2000 protected areas (source: EEA) (env_bio1)
Common farmland bird index (sources: OECD, BirdLife) (env_bio2)
Common bird indices by type of estimate (sources: EBCC, BirdLife, RSPB, CSO) (env_bio3)