In this update, the smoothed indicators and their lower and upper confidence limits for the time periods from 1980 onwards are presented in graphs on the website.
What is new in 2018 data update?
January 18, 2019
The number of species published and the countries contributing to the PECBMS in 2018 remained the same as the last year. However, some news in data presentation appeared as species indices are presented in graphs including their lower and upper confidence limits for the time periods from 1980 onwards.
In this update, the smoothed indicators and their lower and upper confidence limits for the time periods from 1980 onwards are presented in graphs on the website.
- In 2018, the indices and trends for 170 common European species have been produced based on the data from 28 countries. The number of species published and the countries contributing to the PECBMS in 2018 remained the same as the last year.
- Indices of Luxembourg, Italy, and Portugal have not been updated this year, older indices up to the year 2012 (Luxembourg), up to 2014 (Portugal), or up to 2015 (Italy) have been used instead.
- All indices from Estonia and indices for several species from Denmark have been shortening compared to the last update. Estonia now starts one year later (from 1984), and some species from Denmark start now in the early 1980s (while the others are from 1976).
- The species indices are presented in graphs at the website including their lower and upper confidence limits for the time periods from 1980 onwards. All such data are also available for download in a table.
- Two species (Oenanthe cypriaca and Sylvia melanothorax) haven´t been included in all common bird indicators for Europe and EU as they are endemic species for Cyprus and not common for whole Europe. Consequently, only 168 species are included in common bird indicators. The number of species included in common farmland and common forest bird indicators for Europe and the EU remained unchanged (39 farmland species and 34 forest species).
- In this update, we again used a tool to calculate multi-species indices (indicators) developed in Statistics Netherlands. The tool produces the same outputs as in the previous updates of the indicators and also the smoothed values with confidence intervals. For more details on the tool and statistical procedure please check Soldaat, L. L., J. Pannekoek, R. J. T. Verweij, C. A. M. van Turnhout & A. J. van Strien 2017. A Monte Carlo method to account for sampling error in multi-species indicators. Ecological Indicators.
- The smoothed indicators and their lower and upper confidence limits for the time periods from 1980 onwards are presented in graphs on the website. All such data for the time periods from 1980 onwards and 1990 onwards are available for download in a table.
- Besides this, computation procedure, data quality control, and presented indices, trends, and indicators have not undergone any change, all have been kept consistent with last year’s data update.