Sampling event

Population research on small rodents (Rodentia) and shrews (Soricidae) in Steinkjer Municipality – Norway; 2018-2021 based on systematic catches with ordinary mouse traps in traplines

Latest version published by Nord University on 10 January 2022 Nord University
The population cycles of small rodents in Steinkjer Municipality, Trøndelag county in Norway have been followed during the years 2018-2021. Population index based on traplines in young forest/clearcut and old natural spruce forest was one time a year (September) for 2018 and 2019 and for 2020-2021 two times a year (May/June and September) investigated mainly for the species: The Bank Vole (Myodes/Clethrionomys glareolus; Grey-Backed Vole (M. rufocanus and Field Vole (Microtus agrestis, but also for other species of small rodents (Rodentia) as the Wood Lemming (Myopus schisticolor) and Lemming (Lemmus lemmus) and different species of Shrews (Soricidae). Here is presented the data for 2018-2021.
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Publication date:
10 January 2022
Hosted by:
Nord University
License:
CC-BY-NC 4.0

Data Records

The data in this sampling event 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 30 records.

3 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.

  • Event (core)
    30
  • Occurrence 
    259
  • ExtendedMeasurementOrFact 
    94
  • MeasurementOrFacts 
    90

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.

Downloads

Download the latest version of this resource data as a Darwin Core Archive (DwC-A) or the resource metadata as EML or RTF:

Data as a DwC-A file download 30 records in English (22 kB) - Update frequency: unknown
Metadata as an EML file download in English (15 kB)
Metadata as an RTF file download in English (12 kB)

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:

Sørensen O (2022): Population research on small rodents (Rodentia) and shrews (Soricidae) in Steinkjer Municipality – Norway; 2018-2021 based on systematic catches with ordinary mouse traps in traplines. v1.2. Nord University. Dataset/Samplingevent. Ole Jakob Sorensen

Rights

Researchers should respect the following rights statement:

The publisher and rights holder of this work is Nord University. This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC) 4.0 License.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: 07d699bc-469b-4b2d-99a7-363c45fbe325.  Nord University publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF Norway.

Keywords

Samplingevent; mousetrapping. Traplines; Population dynamics; Rodentia; Rodents; Mouse; Soricidae; Shrews. Bank Vole; Myodes glareolus; Grey-sided Vole; Myodes rufocanus; Lemming; Lemmus lemmus; Field Vole; Microtus agrestis. Shrews; Soricidae; The Common Shrew; Sorex araneus; Pygmy Shrew; Sorex minutus; Water Shrew; Neomys fodiens.; Samplingevent. Population dynamics. Rodentia; Rodents; Mouse; Soricidae; Shrews. Bank Vole; Myodes glareolus; Grey-sided Vole; Myodes rufocanus; Lemming; Lemmus lemmus; Field Vole; Microtus agrestis. The Common Shrew; Sorex araneus; Pygmy Shrew; Sorex minutus; Water Shrew; Neomys fodiens.

Contacts

Who created the resource:

Ole Sørensen
Dosent emeritus
Nord University, Faculty of Biosciences and Aquaculture, Ecology Research Group
Box 2501
7725 Steinkjer
Trondelag County
NO
+4791804899

Who can answer questions about the resource:

Ole Sørensen
Dosent emeritus
Nord University, Faculty of Biosciences and Aquaculture, Ecology Research Group
Box 2501
7725 Steinkjer
Trondelag County
NO
+4791804899
Bjørn-Roar Hagen
University lecturer/Assistant professor
Nord university; Fac. of biosciences and aquaculture
Box 2501
7725 Steinkjer
NO
0047-93284425
http://ww.nord.no

Who filled in the metadata:

Ole Sørensen
Dosent emeritus
Nord University, Faculty of Biosciences and Aquaculture, Ecology Research Group
Box 2501
7725 Steinkjer
Trondelag County
NO
+4791804899
Bjørn-Roar Hagen
Assistant professor
Nord university. Fac. of Biosciences and Aquaculture.
Box 2501
7725 Steinkjer
Trondelag
NO

Who else was associated with the resource:

User
Vidar Bakken

Geographic Coverage

The dataset is collected in Steinkjer Municipality - Trondelag County in Norway

Bounding Coordinates South West [63.917, 11.387], North East [64.171, 11.956]

Taxonomic Coverage

Small Rodents (Rodentia) and Shrews (Soricidae). Mainly the species: Bank Vole, (Myodes/Chletrionomys glareolus), Grey-sided Vole, M. rufocanus), Common Vole, (Microtus arvalis), Lemming (Lemmus lemus), Common Shrew (Sorex araneus), Pygmy Shrew (S. minutus) and Water Shrew ( Neomys fodiens).

Order  Rodentia (Rodents)
Family  Soricidae (Shrews)

Temporal Coverage

Formation Period 2018-2021

Project Data

Traplines with ordinary (killing) mousetraps, baited with raw potatoes, have been placed out with approx. 5 m. distance in 2-3 traplines with 50 or 100 traps for 2 nights in preset transects. The same spots have mainly been used. Mouse and shrews caught have been determined to species, sex, fertility grad and weighed whenever possible. One trapline have been set in an old, natural blueberry and spruce-dominated forest. The other lines have been set in a gras-dominated clearcut field of spruce forest and a young planted regrowth area in the same habitat. The population index have been calculated as N/100 trapnights.

Title Population dynamics of Rodents and Shrews in Steinkjer Municipality, Trondelag, Norway 2018 - 2021
Identifier Ole Jakob Sørensen
Funding The study have been funded by: Nord University and North-Trondelag University College. The County Governor of Nord-Trondelag Nord-Trondelag County Municipality The Norwegian Ministry of Climate and Environment; Directorate for Nature Management.
Study Area Description One trap line has been in old, natural spruce and blueberry dominated forest with a mix of pine and birch situated approx. 200 masl. The other tarpping lines have partly been a young, 3-5 m high and partly dense regrowth forest of spruce mixed with birch, and partly on a new clearcut domiated with grass and at the time no regrowth of trees. Both areas are near each other at approx. 50 masl and originally a spruce dominated blueberry forest.
Design Description Traps have been set out at approx. 5 m. distance and baited with raw potatoes at predecided, marked spots. The catch have mainly been done by students under teatchers supervision. Mouse and shrews are identified to species, sex, age, weight and fertility. A population index have been calculated as N/mouse pr. 100 trapnights.

The personnel involved in the project:

Metadata Provider
Ole Jakob Sørensen
Originator
Bjørn-Roar Hagen

Sampling Methods

Given earlier

Study Extent This study is partly a part of a class-program in nature research for the students, but data are also collected to obtain a populations index for small rodents of the area, and also used in several bachelor-thesis where the data are compared with forest grouse density, productiviy and hunter harvests.
Quality Control The species identification and data for each cach is formally identfied/confirmed by Ole. J. Sørensen and Bjørn-Roar Hagen

Method step description:

  1. The results of the catches are written into an excel-file that is updated continously after each catch and once a year transformed and published to GBIF.

Collection Data

Collection Name Database as excel-files on the catches 2018-2021
Collection Identifier Ole Jakob Sørenen
Specimen preservation methods No treatment

Bibliographic Citations

  1. Sørensen, O.J., Moa, P.F. & Hagen, B-R. 2020. Populasjonen av smågnagere (Rodentia) og Spissmus (Soricidae) i Lierne og Steinkjer kommuner 1988 - 2019, og en rekonstruksjon av smågnagerdynamikken i tidligere Nord-Trøndelag 1871-2020. Nord universitet. FoU-Rapprot nr. 65. 1-54. (ISBN 978-82-7456-832-7) In Norwegian with an English Summary.

Additional Metadata

Alternative Identifiers 07d699bc-469b-4b2d-99a7-363c45fbe325
https://ipt.gbif.no/resource?r=rodents_steinkjer