https://ipt.nlbif.nl/resource?r=musk_trap_1941-70 musk_trap_1941-70 Dolf Moerkens Unie van Waterschappen Policy advisor

Koningskade 40 Den Haag Zuid-Holland NL-2596 AA NL

+31.6.53334668 dmoerkens@uvw.nl https://www.uvw.nl Mirjam Boonstra Het Waterschapshuis Advisor

Stationsplein 89 Amersfoort NL-3818 LE NL

m.boonstra@hetwaterschapshuis.nl https://www.hetwaterschapshuis.nl Jeroen Creuwels NLBIF Data manager

PO Box 9517 Leiden NL-2300 RA NL

+31.71.7519600 nlbif@naturalis.nl https://www.nlbif.nl 0000-0001-6131-7026 Dolf Moerkens Unie van Waterschappen Policy advisor

Koningskade 40 Den Haag Zuid-Holland NL-2596 AA NL

+31.6.5333 4668 dmoerkens@uvw.nl https://www.uvw.nl 2026-02-16 eng Trapped muskrats in the Netherlands have been manually registered at municipal level from 1941 until 1970. These data have yielded a valuable dataset that has been used in multiple studies. This dataset is part of a series of datasets concerning trapping muskrats and coypu , from 1941 until present. The trapping data of muskrats and Coypu in the Netherlands is available in various GBIF datasets with different spatial and temporal accuracy:1. Muskrat trapping data in the Netherlands 1941 – 1970, data at municipal level per year; this dataset2. Muskrat trapping data in the Netherlands 1941 – 1986, data at provincial level per year3. Coypu trapping data in the Netherlands 1988 – 2013, data at organization level per year4. Muskrat trapping data in the Netherlands 1987 – 2014, data on 5x5 km level per period of four weeks (https://doi.org/10.15468/ytr96y)5. MICA - Muskrat and coypu occurrences collected by UVW in the Netherlands (from 2014 onwards), data per trapped animal with exact location and date (https://doi.org/10.15468/qjds4c) Occurrence GBIF Dataset Type Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_type_2015-07-10.xml 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. Creative Commons Zero v1.0 Universal https://spdx.org/licenses/CC0-1.0.html CC0-1.0 https://tryout.nlbif.nl/archive.do?r=muskrat_nl_1941-1964 The Netherlands 3.274 7.306 53.606 50.709 The target species for this dataset is Ondatra zibethicus. kingdom Animalia phylum Vertebratae class Mammalia order Rodentia family Cricetidae asNeeded Dolf Moerkens Unie van Waterschappen Policy advisor

Koningskade 40 Den Haag Zuid-Holland NL-2596 AA NL

+316 5333 4668 dmoerkens@uvw.nl https://www.uvw.nl Data are collected in the field by specialized trappers, using the predefined sampling protocol. In R the location (on municipality level are georeferenced with a Google geocoding API, yielding geographic coordinates and the uncertainty of coordinates. These uncertainties are calculated from current borders of the municipality. Sometimes they have to be slightly adjusted due to changes of municipality (in most cases merging with other municipalities). An R script script is created to transform the original data structure and add extra taxonomic information, as well other information. The output is an DarwinCore occurrence file, which is uploaded via the NLBIF IPT and documented with metadata. The Netherlands Only trapped (dead) muskrats were registered Trapping is carried out by professional trappers 2026-02-16T23:27:35.326+00:00 dataset Beheer van de Muskusrat in Nederland. Synthese van een grootschalige veldproef en parallelle studies Technische rapportage "objectbescherming en analyse van ontwikkelingen in de proefuurhokken" Toekomst van het muskusrattenbeheer in Nederland. De mogelijkheden onderzocht Cost-Benefit analysis of invasive muskrat control in The Netherlands: Complete removal as financially rational strategy A Large‐Scale Experiment to Evaluate Control of Invasive Muskrats Damage to dykes and levees in the ­ Netherlands is extensive and increases with muskrat (Ondatra zibethicus) density Evidence for the effectiveness of controlling muskrat (Ondatra zibethicus L.) populations by trapping Intensieve bestrijding van muskusrat en nutria in Nederland. Ervaring gebaseerd op jarenlange controle en onderzoek A historical perspective on the effects of trapping and controlling the muskrat (Ondatra zibethicus) in The Netherlands http://ipt.nlbif.nl/resources/logo_hWh.png