Invasive species - New Zealand pigmyweed (Crassula helmsii) occurrences in Flanders, Belgium

Kevin Scheers; Jo Packet; Luc Denys; Wim Jambon; Dimitri Brosens

doi:10.15468/ckq9l7

Invasive species - New Zealand pigmyweed (Crassula helmsii) occurrences in Flanders, Belgium

Citation

Scheers K, Packet J, Denys L, Jambon W, Brosens D, Reyserhove L (2021). Invasive species - New Zealand pigmyweed (Crassula helmsii) occurrences in Flanders, Belgium. Version 1.9. Research Institute for Nature and Forest (INBO). Sampling event dataset https://doi.org/10.15468/ckq9l7 accessed via GBIF.org on 2024-12-11.

Description

Invasive species - New Zealand pigmyweed (Crassula helmsii) occurrences in Flanders, Belgium is a sampling event dataset published by the Research Institute for Nature and Forest (INBO). It contains information on 274 sampling events with 162 occurrences of invasive New Zealand pigmyweed starting from 2013. This dataset is a subset of a larger vegetation analysis and focuses only on the Crassula helmsii occurrences. Here the dataset is published as a standardized Darwin Core Archive and includes for each event: a stable eventID, date and location of the observation, and a short description of the sampling protocol (in the event core), supplemented with specific information for each occurrence: a stable occurrenceID, the scientific name and higher classification of the observed species, the number of recorded individuals and a reference to the observer of the record (in the occurrence extension). Issues with the dataset can be reported at https://github.com/inbo/data-publication/issues

We have released this dataset to the public domain under a Creative Commons Zero waiver. We would appreciate it if you follow the GBIF citation guidelines (https://www.gbif.org/citation-guidelines) 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 or via https://twitter.com/trias_project.

This dataset was published as open data for the TrIAS project (Tracking Invasive Alien Species http://trias-project.be, Vanderhoeven et al. 2017), with technical support provided by the Research Institute for Nature and Forest (INBO).

Purpose

The dataset was created to analyse and study the habitat of Crassula helmsii in Flanders. Only the Crassula helmsii occurrences were published, to make sure these occurrences can be used for the TrIAS project.

Sampling Description

Study Extent

Flanders

Sampling

Braun-Blanquet cover-abundance scale for vegetation analysis

Method steps

The source data for this dataset is the survey "Crassula helmsii standplaatsonderzoek" in the INBO NBN databse.
A SQL script was developed to extract and transform the data to Darwin Core. This mapping script was uploaded to a GitHub repository (https://github.com/inbo/data-publication/tree/master/datasets/invasive-crassula-occurrences/src) and includes the following steps:
Perform some basic data cleaning of the raw data
Generate stable and unique identifiers for each event (eventID) and occurrence (occurrenceID).
Create an event core file with all sampling events whether or not the target species was observed (http://rs.gbif.org/core/dwc_event_2016_06_21.xml).
Create a occurrence extension file (http://rs.gbif.org/core/dwc_occurrence_2015-07-02.xml).
The resulting Darwin Core views are connected with the INBO IPT and documented with metadata.
The dataset is published and registered with GBIF.

Taxonomic Coverages

This survey reports on the occurrences of the invasive New Zealand pigmyweed (Crassula helmsii) in Flanders in the wild.

Plantae
common name: plants rank: kingdom
Tracheophyta
common name: vascular plants rank: phylum
Crassula helmsii
common name: New Zealand pigmyweed rank: species

Geographic Coverages

Flanders, Belgium.

Bibliographic Citations

Vanderhoeven S, Adriaens T, Desmet P, Strubbe D, Backeljau T, Barbier Y, Brosens D, Cigar J, Coupremanne M, De Troch R, Eggermont H, Heughebaert A, Hostens K, Huybrechts P, Jacquemart A, Lens L, Monty A, Paquet J, Prévot C, Robertson T, Termonia P, Van De Kerchove R, Van Hoey G, Van Schaeybroeck B, Vercayie D, Verleye T, Welby S, Groom Q (2017) Tracking Invasive Alien Species (TrIAS): Building a data-driven framework to inform policy. Research Ideas and Outcomes 3: e13414. - https://doi.org/10.3897/rio.3.e13414

Contacts

Kevin Scheers
originator
Research Institute for Nature and Forest (INBO)
BE
email: kevin.scheers@inbo.be
userId: http://orcid.org/0000-0002-4756-4247

Jo Packet
originator
Research Institute for Nature and Forest (INBO)
BE
userId: http://orcid.org/0000-0001-5590-323X

Luc Denys
originator
Research Institute for Nature and Forest (INBO)
BE
email: luc.denys@inbo.be

Wim Jambon
originator
Research Institute for Nature and Forest (INBO)
BE

Dimitri Brosens
originator
Research Institute for Nature and Forest (INBO) / Belgian Biodiversity Platform
BE
email: dimitri.brosens@inbo.be
userId: http://orcid.org/0000-0002-0846-9116

Dimitri Brosens
metadata author
Research Institute for Nature and Forest (INBO) / Belgian Biodiversity Platform
BE
email: dimitri.brosens@inbo.be
userId: http://orcid.org/0000-0002-0846-9116

Lien Reyserhove
metadata author
Research Institute for Nature and Forest (INBO)
BE
email: lien.reyserhove@inbo.be
userId: http://orcid.org/0000-0001-7484-9267

Kevin Scheers
administrative point of contact
Research Institute for Nature and Forest (INBO)
BE
email: kevin.scheers@inbo.be
userId: http://orcid.org/0000-0002-4756-4247