The database of stranded cetaceans in The Netherlands contains of records of whales, dolphins and porpoises, order Cetacea. All records concern strandings of single individuals (there are four exceptions: one of 3-6 sperm whales and three of 11-61 long-finned pilot whales). The electronic database was compiled from published records on strandings (see Literature) gathered since 1914 and is supplemented with data on a regular basis. It contains all records that have been presented to the respective managers of the database, and was started by A.B. van Deinse. Van Deinse and successors have added strandings from before 1914 as well and the oldest record thus far is a sperm whale stranded in 1255.
Anno 2020, the database contains over 12,500 unique records of 26 species (among which five subfossil records of the nowadays extinct Atlantic population of grey whale Eschrichtius robustus and a few dozens of unidentified specimens). The database is considered to be fairly complete since 1914 regarding species other than harbour porpoise Phocoena phocoena. Of the latter, records are up to date only since 1971. Harbour porpoise has always been resident species in Dutch waters and it was considered too common by Van Deinse – and records were too numerous – to collect data of stranded individuals until the late 1950s, when numbers were dwindling. Hence, records prior to 1971 are very incomplete, although records from the past are are added ad hoc.
Nowadays, the database is updated at least once a week, and records are validated before they are entered. Individual records contain the Dutch and scientific name as far as animals can be identified (in several cases, stranded individuals have been identified only down to 'group' (e.g. 'small whale'). Identifications may be adjusted if new information becomes available. Included with every single record, apart from species name, are date and location of stranding, sex, length, state of carcass, storage of remains, autopsied or not, references, photographs, and name of finder/reporter, if appropriate. As of 1 January 2006 the database is freely accessible at www.walvisstrandingen.nl and managed by Naturalis Biodiversity Center in Leiden, The Netherlands. With the publication of the www.walvisstrandingen.nl-dataset with GBIF, all data concerning Dutch strandings are better searchable and the full set, or a selection, can be downloaded. However, it is recommended to contact Naturalis if the data are used for research.
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 14,392 records.
1 extension data tables also exist. An extension record supplies extra information about a core record. The number of records in each extension data table is illustrated below.
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 Naturalis Biodiversity Center. 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.
This resource has been registered with GBIF, and assigned the following GBIF UUID: 66e240a7-ae35-4f59-9ad9-c62687015ed8. Naturalis Biodiversity Center publishes this resource, and is itself registered in GBIF as a data publisher endorsed by Netherlands Biodiversity Information Facility.
The Netherlands excluding the overseas areas (Caribbean islands)
|South West [50.709, 3.274], North East [53.606, 7.306]
No Description available
|Historical records are (have been) taken from publications, unpublished reports (e.g. letters, manuscripts, diaries), zoological collections, paintings, photographs et cetera. Records of cetaceans that strand nowadays are collected by oral or written reports received ad hoc by people visiting the coast. Records reported to other public websites are copied. Vital in keeping records updated is the network of voluntary co-workers that visit the beach. This network has been erected and is maintained by Seal Centre Pieterburen. Important in validating length and sex of a subset of cetaceans (i.e. the ones collected for research on the cause of death) is cooperation with the Faculty of Veterinary Medicine, Department of Pathobiology of Utrecht University. All records of any sign of a stranded cetacean, also live strandings, carcasses of cetaceans brought in on the bulb of cargo ships, or loose skulls and bones, are included. Records of live sightings of cetaceans not stranded are not included. The database is updated at least once a week. Quality control. Individual records are assessed and validated by the database manager, preferably on basis of photographs. In case of doubt, observers are contacted by e-mail or telephone and asked for photographs and/or description.
The personnel involved in the project:
- Camphuysen C.J., C. Smeenk, M. Addink, H. van Grouw & O.E. Jansen 2008. Cetaceans stranded in the Netherlands from 1998 to 2007. Lutra 51: 87-122.
- Husson A.M. & P.J.H. van Bree 1972. Strandingen van Cetacea op de Nederlandse kust in 1970 en 1971. Lutra 14: 1-4.
- Keijl G.O., L. Begeman, S. Hiemstra, L.L. IJsseldijk, P. Kamminga & Seal Centre Pieterburen 2016. Cetaceans stranded in the Netherlands in 2008-2014. Lutra 59: 75-107.
- Smeenk C. 1986. Strandingen van cetacea op de Nederlandse kust in 1981, 1982 en 1983. Lutra 29: 268-281.
- van Bree P.J.H. 1978. Strandingen van cetacea op de Nederlandse kust in 1976 en 1977. Lutra 20: 13-18.
- van Deinse A.B. 1915. Over de vinvissen die in de maand november 1914 aan onze kust aanspoelden. De Levende Natuur 19: 421-430.
- van Deinse A.B. 1931. De fossiele en recente cetacea van Nederland. Dissertatie, Utrecht.