Occurrences from the Alien CSI Bioblitz: citizen science to engage society in invasive species monitoring

Latest version published by Research Institute for Nature and Forest (INBO) on Jul 7, 2023 Research Institute for Nature and Forest (INBO)
Publication date:
7 July 2023
CC0 1.0

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Data as a DwC-A file download 2,557 records in English (72 KB) - Update frequency: annually
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The “Occurrences from the Alien CSI Bioblitz: citizen science to engage society in invasive species monitoring” dataset is an occurrence dataset published by the Research Institute for Nature and Forest (INBO) in collaboration with the AlienCSI COST (European Cooperation in Science and Technology, CA17122) research network (Roy et al. 2018). The dataset contains all the alien species data collected during the Alien CSI Bioblitz. This bioblitz was organized for the first time in May 2022 as a three day event and is planned to be repeated yearly. This bioblitz activity aims to engage society in invasive species monitoring. The first edition included guided bioblitzes in thirteen different protected areas across twelve European countries. The data are published as a standardized Darwin Core Archive. Issues with the dataset can be reported at https://github.com/alien-csi/bioblitz-occurrences/issues

We have released this dataset to the public domain under a Creative Commons Public Domain Dedication. We would appreciate it if you follow the INBO norms for data use (https://www.inbo.be/en/norms-data-use) when using the data. If you have any questions regarding this dataset, don't hesitate to contact us via the contact information provided in the metadata.

Data Records

The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 2,557 records.

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.


The table below shows only published versions of the resource that are publicly accessible.


Researchers should respect the following rights statement:

The publisher and rights holder of this work is Research Institute for Nature and Forest (INBO). 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.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: 73873fcc-2bea-49a0-b38e-96797faf74c0.  Research Institute for Nature and Forest (INBO) publishes this resource, and is itself registered in GBIF as a data publisher endorsed by Belgian Biodiversity Platform.


Occurrence; Observation; citizen science; invasive alien species; COST action; bioblitz


Tim Adriaens
  • Metadata Provider
  • Originator
Research Institute for Nature and Forest (INBO)
Bernat Claramunt
  • Originator
Ecological and Forestry Applications Research Centre (CREAF)
Debby Dekoninck
  • Originator
Agency for Nature and Forest (ANB), LIFE DUNIAS
Reinhardt Strubbe
  • Originator
Agency for Nature and Forest (ANB), LIFE DUNIAS
Dido Gosse
  • Originator
Contrat de Rivière Senne, LIFE RIPARIAS
Anna Gazda
  • Originator
University of Agriculture in Krakow
Jiříslav Skuhrovec
Marta López Darias
  • Originator
IPNA-CSIC (Spanish National Research Council)
Kelly Martinou
  • Originator
The Cyprus Institute
Bozena Mitic
Ioannis Bazos
  • Originator
National and Kapodistrian University of Athens
Vanessa Lozano
  • Originator
Universita degli Studi di Sassari
Roser Rotchés Ribalta
  • Originator
Ecological and Forestry Applications Research Centre (CREAF)
Heliana Teixeira
Attila Lengyel
  • Originator
Centre for Ecological Research
Esra Per
  • Originator
Gazi University
Teodora Trichkova
  • Originator
Bulgarian Academy of Sciences
Niki Chartosia
  • Metadata Provider
University of Cyprus
Pavel Pipek
  • Point Of Contact
Institute of Botany, Czech Academy of Sciences
Lien Reyserhove
  • User
  • Point Of Contact
Research Institute for Nature and Forest (INBO)

Geographic Coverage

Europe (Austria, Belgium, Bulgaria, Catalonia, Croatia, Cyprus, Czech Republic, Greece, Italy, Poland, Portugal, Slovenia, Turkey), including the Canary Islands.

Bounding Coordinates South West [34.597, -13.711], North East [70.902, 53.262]

Temporal Coverage

Start Date / End Date 22022-03-20 / 2022-03-22

Sampling Methods

The AlienCSI bioblitz represents a place-based bioblitz of varying duration (but within one weekend) and with a varying number of participants. Target groups include experts as well as the general public, naturalists etc. The activity aims to yield data on target species in the areas and to increase awareness with participants on the alien species and their impacts on nature. It is a targeted event that considers alien species, although native species are also recorded. Observers typically use different smartphone apps for recording, including iNaturalist, Obsmapp, RedEXOS or the Invasive Alien Species Europe app (Joint Research Centre).

Study Extent The Bioblitz has a focus on alien species in protected areas across Europe and the Canary Islands.
Quality Control The different organizers had varied quality control systems, see Adriaens et al. 2021 for an overview.

Method step description:

  1. The source data for this standardized occurrence dataset is a Google spreadsheet, maintained by the Research Institute of Nature and Forest (INBO) and updated yearly.
  2. The data was downloaded as a csv file and uploaded to the Github repository (https://github.com/alien-csi/bioblitz-occurrences/tree/main/data/raw).
  3. We developed a RMarkdown script to document and perform the transformation of the data to Darwin Core.

Bibliographic Citations

  1. Adriaens, T., Tricarico, E., Reyserhove, L., De Jesus Cardoso, A-C., Gervasini, E., Lopez Canizares, C., Mitton, I., Schade, S., Spinelli, F-A., & Tsiamis, K. (2021). Data-validation solutions for citizen science data on invasive alien species. (JRC126140 ed.) Publications Office of the European Union. https://doi.org/10.2760/694386
  2. Roy H, Groom Q, Adriaens T, Agnello G, Antic M, Archambeau A, Bacher S, Bonn A, Brown P, Brundu G, López B, Cleary M, Cogălniceanu D, de Groot M, De Sousa T, Deidun A, Essl F, Fišer Pečnikar Ž, Gazda A, Gervasini E, Glavendekic M, Gigot G, Jelaska S, Jeschke J, Kaminski D, Karachle P, Komives T, Lapin K, Lucy F, Marchante E, Marisavljevic D, Marja R, Martín Torrijos L, Martinou A, Matosevic D, Mifsud C, Motiejūnaitė J, Ojaveer H, Pasalic N, Pekárik L, Per E, Pergl J, Pesic V, Pocock M, Reino L, Ries C, Rozylowicz L, Schade S, Sigurdsson S, Steinitz O, Stern N, Teofilovski A, Thorsson J, Tomov R, Tricarico E, Trichkova T, Tsiamis K, van Valkenburg J, Vella N, Verbrugge L, Vétek G, Villaverde C, Witzell J, Zenetos A, Cardoso A (2018) Increasing understanding of alien species through citizen science (Alien-CSI). Research Ideas and Outcomes 4: e31412. https://doi.org/10.3897/rio.4.e31412

Additional Metadata

Alternative Identifiers 73873fcc-2bea-49a0-b38e-96797faf74c0