Description
The dataset contains occurrences and images of two flatworm species (Itaspiella helgolandica and Notocaryoplana arctica) in the family Otoplanidae from northern Norway, Greenland and Svalbard.
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 55 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.
Versions
The table below shows only published versions of the resource that are publicly accessible.
How to cite
Researchers should cite this work as follows:
Vikberg Wernström J, Hang Kwan Y, Vohnname T R, Glud R N, Altenburger A (2025). Circumpolar otoplanid flatworms. Version 1.0. UiT The Arctic University of Norway. Occurrence dataset. https://ipt.gbif.no/resource?r=notocaryoplana&v=1.0
Rights
Researchers should respect the following rights statement:
The publisher and rights holder of this work is UiT The Arctic University of Norway. This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.
GBIF Registration
This resource has been registered with GBIF, and assigned the following GBIF UUID: 97f440e7-d8c5-437d-b6bd-ad0da44bc70e. UiT The Arctic University of Norway publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF Norway.
Keywords
Occurrence; Observation
Contacts
- Originator ●
- Point Of Contact
- PhD Fellow
- Lars Thørings veg 10
- 41342289
https://orcid.org/0000-0003-2902-7664
- Originator
- PhD Student
- Originator
- PostDoc
- Originator
- Metadata Provider ●
- Point Of Contact
- Associate Professor
Geographic Coverage
Northern Norway, Greenland and Svalbard.
| Bounding Coordinates | South West [64.179, -51.746], North East [78.24, 18.907] |
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Taxonomic Coverage
All flatworms herein were identified to at least family level.
| Family | Otoplanidae (otoplanid flatworms) |
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| Species | Notocaryoplana arctica, Itaspiella helgolandica |
Temporal Coverage
| Start Date / End Date | 2024-04-26 / 2024-08-14 |
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Project Data
Otoplanid flatworms live in the surf zone of sandy beaches. In spite of their presumed poor dispersal capabilities, several taxa have been recorded across the Arctic. This project was designed to investigate explanatory factors for their wide distribution such as cryptic speciation and continuous, cross-oceanic dispersal.
| Title | Phylogeographic study of circumpolar otoplanid flatworms |
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| Funding | Funding for this study was provided by the University of the Arctic’s North2North travel grant and by the Norwegian Biodiversity Information Centre. |
| Study Area Description | The project investigated flatworms in areas of northern Norway, Greenland and Svalbard. |
| Design Description | Flatworms were collected, studied morphologically, and subjected to DNA extraction and amplification to investigate their phylogeography and the presence of cryptic species. |
The personnel involved in the project:
Sampling Methods
Flatworm specimens were retrieved from marine beaches in Greenland (Nuuk), Svalbard (Longyearbyen), and Norway by collecting surf-zone sand and seawater in a bucket. In northern Norway, two locations were sampled – the in-fjord Telegrafbukta beach in Tromsø city, and the island of Sommarøy in the outermost archipelago. In Nuuk and Sommarøy, a sea water salinity measurement was taken using a Kern Optics analog refractometer. Flatworms were extracted from recovered sand by mixing it with a solution of 7% MgCl2 in sea water in an Erlenmeyer flask. The flask was turned upside down a couple of times before decanting the aqueous solution with suspended flatworms into a 63 µm sieve. The sieve was placed in a petri dish containing sea water before flatworms were manually picked out, and specimens of each species placed into separate embryo dishes using a glass Pasteur pipette. When practically possible, specimens were starved in clean seawater in a refrigerator for a few days before they were photographed under microscopes or stereo microscopes, depending on what was available at the sampling location.
| Study Extent | Flatworms were sampled in northern Norway, Greenland and Svalbard. |
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Method step description:
- Flatworm specimens were retrieved from marine beaches in Greenland (Nuuk), Svalbard (Longyearbyen), and Norway by collecting surf-zone sand and seawater in a bucket. In northern Norway, two locations were sampled – the in-fjord Telegrafbukta beach in Tromsø city, and the island of Sommarøy in the outermost archipelago. In Nuuk and Sommarøy, a sea water salinity measurement was taken using a Kern Optics analog refractometer. Flatworms were extracted from recovered sand by mixing it with a solution of 7% MgCl2 in sea water in an Erlenmeyer flask. The flask was turned upside down a couple of times before decanting the aqueous solution with suspended flatworms into a 63 µm sieve. The sieve was placed in a petri dish containing sea water before flatworms were manually picked out, and specimens of each species placed into separate embryo dishes using a glass Pasteur pipette. When practically possible, specimens were starved in clean seawater in a refrigerator for a few days before they were photographed under microscopes or stereo microscopes, depending on what was available at the sampling location.
Additional Metadata
| Alternative Identifiers | https://ipt.gbif.no/resource?r=notocaryoplana |
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