Øvre Heimdalsvatn, Radiocaesium (Cs-137) monitored annually in brown trout (Salmo trutta)

John Edward Brittain1, Jan Egil Gjerseth2, Reidar Borgstrøm2, John Gunnar Dokk2

1 Natural History Museum, University of Oslo, Sars gate 1, 0562, Oslo, Norway; 2 NMBU, Campus Ås, 1430, Ås, Norway

Corresponding author(s): John Edward Brittain (j.e.brittain@nhm.uio.no),  (helpdesk@gbif.no)

Received {date}; Revised {date}; Accepted {date}; Published {date}

Citation: Combination of authors, year of data paper publication (in parentheses), Title, Journal Name, Volume, Issue number (in parentheses), and doi of the data paper.

Abstract

"This dataset describes a long time serie for monitoring of radioactive radiocaesium isotope (Cs-137) concentration in the brown trout (Salmo trutta) population in a mountain lake (Øvre Heimdalsvatn) situated on the tree line in the eastern edge of the Jotunheimen Mountains. Ecosystem studies at Øvre Heimdalsvatn started in 1957, while this time series for radioecological monitoring started after the Chernobyl nuclear power plant accident in 1986. The aim of this study was to document the long-term changes in the radioactive isotope Cs-137 in brown trout and to elucidate the factors determining changes in Cs-137 activity concentrations over time.

This dataset provides only one time serie from the extensive ecosystem studies (initiated in 1957) at Øvre Heimdalsvatn. The mountain lake is at 1090 meter above sea-level with a surface area of 0.78 square kilometer (km2) (78 hectare). The maximum length is 3 km and the maximum width is 396 m. The largest depth is 13 m and the average depth is 4.7 m. Vegetation near the lake ranges from subalpine birch forest with areas of mountain pasture to high alpine vegetation above 1,600 m a.s.l. Originally brown trout was the sole fish species in the lake, but since 1969 the European minnow (Phoxinus phoxinus) has also been recorded and its numbers have subsequently increased substantially. Brown trout for this study were generally caught by gill netting around the lake."

Keywords: Occurrence, Specimen, Occurrence

Project details

Project title: Øvre Heimdalsvatn
Personnel: 
Study area descriptions/descriptor: Monitoring of lake ecosystem, including brown trout stocks and interaction with European minnow, benthic macroinvertebrates, zooplankton and radiocesium in water, fish, aquatic moss, allochthonous organic matter and lake sediments. Abiotic parameters, including lake water level, water temperature, ice cover duration, precipitation and air temperature, are also continuously measured. In addition, there extensive studies of bird behaviour in the catchment, as well as monitoring of small mammals.

Data published through GBIF: https://ipt.gbif.no/resource?r=heimdalsvatn

Spatial coverage

General spatial coverage: Øvre Heimdalsvatn, Norway
Coordinates: 61°25'1.2''N and 61°25'40.8''N Latitude; 8°50'24''E and 8°53'42''E Longitude 

Temporal coverage: August 4, 1986 - September 19, 2007

Datasets

Dataset description
Object name: Darwin Core Archive Øvre Heimdalsvatn, Radiocaesium (Cs-137) monitored annually in brown trout (Salmo trutta)
Character encoding: UTF-8
Format name: Darwin Core Archive format
Format version: 1.0
Distribution: https://ipt.gbif.no/archive.do?r=heimdalsvatn
Publication date of data: 2021-12-08
Language: English
Licences of use: Creative Commons Attribution (CC-BY) 4.0 License

Metadata language: English
Date of metadata creation: 2014-11-18
Hierarchy level: Dataset