Broedvogels - Atlas of the breeding birds in Flanders 2000-2002

Dataset type

Deze dataset bevat primaire waarnemingsgegevens voor soorten.

Beschrijving

Broedvogels - Atlas of the breeding birds in Flanders 2000-2002 is a species occurrence dataset published by the Research Institute for Nature and Forest (INBO). The dataset contains more than 330,000 bird observations, collected during three breeding seasons (2000, 2001, 2002) using a standardized field methodology using a 5km x 5km square grid system covering all of Flanders, Belgium (645 squares) as well as up to eight 1km x 1km sample squares within each larger square. Test data from 1999 and additional data to increase coverage from 2003 are also included. The dataset includes information on 197 taxa, of which 183 species (13 exotic) and 3 subspecies are considered breeding in Flanders. The data are released in bulk as open data. See the dataset metadata or the paper Bird Census News 2004 1/2: 35-47 http://www.ebcc.info/wpimages/video/BCN_17_1&2.pdf) for contact information, scope and methodology. Issues with the dataset can be reported at https://github.com/LifeWatchINBO/data-publication/tree/master/datasets/broedvogel-atlas-occurrences To allow anyone to use this dataset, we have released the data to the public domain under a Creative Commons Zero waiver http://creativecommons.org/publicdomain/zero/1.0/). We would appreciate it however if you read and follow these norms for data use http://www.inbo.be/en/norms-for-data-use) and provide a link to the original dataset https://doi.org/10.15468/sccg5a) whenever possible. If you use these data for a scientific paper, please cite the dataset following the applicable citation norms and/or consider us for co-authorship. We are always interested to know how you have used or visualized the data, or to provide more information, so please contact us via the contact information provided in the metadata, opendata@inbo.be or https://twitter.com/LifeWatchINBO.

Geografische beschrijving

Flanders, Belgium

Doel

The first atlas of breeding birds in Flanders was published in 1988 and was based on fieldwork conducted between 1973-1977 (Devillers et al. 1988). For almost three decades, this work provided the only information available on the distribution and abundance of all breeding bird species in Flanders. Although several species-specific projects were subsequently undertaken, it was not until 1994 that a monitoring programme for rare, colonial and exotic bird species was initiated. This was coordinated by the then Institute of Nature Conservation (IN), now the Research Institute for Nature and Forest (INBO), a research institute of the Flemish Government. Although this project provided very useful information that could be used for defining special protection areas (SPAs), it was clear that the rest of the breeding avifauna, including common species, was experiencing major changes. As a direct response, during 1998, a new comprehensive breeding atlas project was launched by the INBO in collaboration with several other organizations and financed by the Flemish Government.

Gegevenskwaliteit

All data obtained from atlas fieldwork were collected on standard recording forms. These were sent to the regional coordinator who checked them thoroughly and contacted volunteers in case of any obvious anomalies. Following this first step, data were sent to the INBO where they were checked once more before being entered in an SQL-database. Forms were printed from the database which were returned to the individual volunteers. They were asked to check the lists one final time in order to ensure accuracy. After the final breeding season, the completed lists for each region were sent to the relevant coordinators asking them to provide extra information on the annual numbers of some colonial or rare breeding bird species per square. For some pioneer species like Sand Martin and Avocet or obvious species like Rook, we wanted to be able to estimate the numbers in each of the three atlas years.

Technology also presented a convenient way of double-checking data. By posting preliminary versions of species maps (distribution, numbers and relative abundance) on a frequently updated website http://broedvogels.inbo.be), volunteers were able to easily provide many useful comments. The site also provided the opportunity to submit records from outside the census procedures, resulting in over 60.000 extra observations. These observations were also submitted to regional coordinators for them to assess credibility and accuracy. Afterwards, if the observations enhanced the information per square, they were incorporated, although they could be traced at all times.

Methoden

For each 5km x 5km square ("atlashok"), volunteers were asked to try and locate as many breeding bird species as possible and to assess both numbers and locations of a selected subset of species. The volunteer could choose how many visits to make and for how long, although it was advised to visit for 30-50 hours and to visit in early morning. This method is indicated in the data as follows:

• occurrenceID: contains AH (for "atlashok")
• locationID: code of the "atlashok"
• verbatimCoordinates: MRGS code of the "atlashok"
• decimalLatitude/longitude: centroid of 5km x 5km "atlashok"
• samplingMethod: Bird Census News 2004 1/2 p.36
• samplingEffort: number of observation hours
• sampleSize: 25 square kilometer
• eventDate: date range for the observation
• scientificName: observed species
• individualCount: number of breeding pairs for that species
• behavior: breeding statusIn a more standardized method, the volunteer was required to make two one-hour long visits to a set of eight fixed 1km x 1km squares ("kilometerhok") in each 5km x 5km square: once between April 1 to May 15 and once between May 16 and June 30.In the one-hour visit, the volunteer traversed the 1km x 1km square for 55 minutes and noted all breeding species. This method is indicated in the data as follows:
• occurrenceID: contains KM (for "kilometerhok")
• locationID: code of the "atlashok"
• verbatimCoordinates: MRGS code of the "kilometerhok"
• decimalLatitude/longitude: centroid of 1km x 1km "kilometerhok"
• samplingMethod: Bird Census News 2004 1/2 p.36
• samplingEffort: 55 minutes
• sampleSize: 1 square kilometer
• eventDate: specific date of the observation
• scientificName: observed species
• individualCount: number of breeding pairs for that species
• behavior: no breeding status informationIn the one-hour visit, the volunteer also did a 5 minute point count near the center of the 1km x 1km square, with a radius of 100m. This method is indicated in the data as follows:
• occurrenceID: contains PT (for "punttelling")
• locationID: code of the "atlashok"
• verbatimCoordinates: MRGS code of the "kilometerhok"
• decimalLatitude/longitude: centroid of 1km x 1km "kilometerhok"
• samplingMethod: Bird Census News 2004 1/2 p.36
• samplingEffort: 5 minutes
• sampleSize: 1 square kilometer
• eventDate: specific date of the observation
• scientificName: observed species
• individualCount: no information
• behavior: no breeding status informationThe data also includes loose observations. This method is indicated in the data as follows:
• occurrenceID: contains LW (for "losse waarneming")
• locationID: code of the "atlashok"
• verbatimCoordinates: MRGS code of the "atlashok"
• decimalLatitude/longitude: centroid of 5km x 5km "atlashok"
• samplingMethod: loose observations
• samplingEffort: no information
• sampleSize: 25 square kilometer
• eventDate: specific date of the observation
• scientificName: observed species
• individualCount: number of breeding pairs for that species
• behavior: breeding status

Type inhoud

Omvat: Puntvoorkomstengegevens.

Bronvermelding

Vermeersch G, Anselin A, Devos K, Herremans M, Stevens J, Gabriëls J, Van Der Krieken B, Brosens D, Desmet P (2025). Broedvogels - Atlas of the breeding birds in Flanders 2000-2002. Version 1.7. Research Institute for Nature and Forest (INBO). Occurrence dataset. https://doi.org/10.15468/sccg5a

Rechten

To the extent possible under law, the publisher has waived all rights to these data and has dedicated them to the Public Domain (CC0 1.0). Users may copy, modify, distribute and use the work, including for commercial purposes, without restriction.

Gedigitaliseerde records

Metadata voor het laatst bijgewerkt op 2025-06-30 13:13:42.0