Indicators

The indicators in the Environmental Data Compendium are updated regularly. Below is the list of the last updated indicators. Using this page, you can easily see which indicators were updated since your last visit.

Environmental quality of terrestrial ecosystems: nitrogen deposition 1994–2022

Nitrogen deposition has declined since the 1990s, leading to an improvement in the environmental quality of terrestrial ecosystems. This improvement in environmental quality stalled in 2010, but…

Membership of Dutch private nature conservation organisations, 1989-2023

The combined membership of the four biggest nature conservation organisations in 2023 was 1,744,716 members/donors. Natuurmonumenten had the most members/donors (851,441), followed by the World Wide…

Farmland bird indicator, 1915-2023

Changes in agricultural practices have caused a significant decline in breeding birds typical of agricultural areas in the Netherlands, starting from the early 20 th century.

Angling in the Netherlands, 1990-2022

In 2020 more than 700,000 active anglers were members of an angling club in the Netherlands and holders of the national fishing permit. The Covid-19 restrictions led to a significant increase in the…

Alien species in the Netherlands, 1990-2020

The number of new species becoming established in the Netherlands as a result of human agency is growing rapidly. Most of these alien species are terrestrial arthropods (insects) and plants. In recent…

Ozone layer, 1980-2022

The thickness of the ozone layer has decreased by 5% worldwide during the last 25 years, with most depletion taking place between 1980 and 1990. Since the early 1990s, it has remained stable at this…

Spatial conditions of the national ecological network, 2021

The increase in the area of new nature since 1990 has improved the size and connectivity (spatial conditions) of terrestrial ecosystems in the Netherlands. However, a considerable part of the national…

Landscape openness

The most open areas in the Netherlands are the large water bodies, the northern marine clay and peat areas and the IJsselmeer polders. The most enclosed and small-scale landscapes are found throughout…

Ecosystem goods and services in the Netherlands, 2020

Dutch society uses a variety of goods and services provided by ecosystems. Although Dutch ecosystems make a valuable contribution to meeting the need for the sustainable provision of goods and…

Habitat defragmentation measures for infrastructure, 2018

At the end of 2018, of the 176 ecological barriers identified and selected in the Multiyear Habitat Defragmentation Programme, 126 had been removed and 40 partly removed by taking mitigation measures…

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