Descrição
"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."
Registros de Dados
Os dados deste recurso de ocorrência foram publicados como um Darwin Core Archive (DwC-A), que é o formato padronizado para compartilhamento de dados de biodiversidade como um conjunto de uma ou mais tabelas de dados. A tabela de dados do núcleo contém 456 registros.
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.
Versões
A tabela abaixo mostra apenas versões de recursos que são publicamente acessíveis.
Direitos
Pesquisadores devem respeitar a seguinte declaração de direitos:
O editor e o detentor dos direitos deste trabalho é University of Oslo. This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.
GBIF Registration
Este recurso foi registrado no GBIF e atribuído ao seguinte GBIF UUID: 7221810e-52b1-459d-a6a4-02160c67feef. University of Oslo publica este recurso, e está registrado no GBIF como um publicador de dados aprovado por GBIF Norway.
Palavras-chave
Occurrence; Specimen; Occurrence
Contatos
- Originador ●
- Ponto De Contato
Cobertura Geográfica
Øvre Heimdalsvatn, Norway
| Coordenadas delimitadoras | Sul Oeste [61,417, 8,84], Norte Leste [61,428, 8,895] |
|---|
Cobertura Temporal
| Data Inicial / Data final | 1986-08-04 / 2007-09-19 |
|---|
Dados Sobre o Projeto
Nenhuma descrição disponível
| Título | Øvre Heimdalsvatn |
|---|---|
| Descrição da Área de Estudo | 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. |
O pessoal envolvido no projeto:
Metadados Adicionais
| Identificadores alternativos | 7221810e-52b1-459d-a6a4-02160c67feef |
|---|---|
| https://ipt.gbif.no/resource?r=heimdalsvatn |