Arctic charr and brown trout data from a compensatory nutrient enrichment experiment in an oligotrophicated hydropower reservoir
https://doi.org/10.5878/eyp9-2k93
This is a data set with length (fork lengt, mm), wet weight (g), condition (g/cm3x100) and age (+years) of Arctic charr (Salvelinus alpinus) and brown trout (Salmo trutta) from a whole lake experiment in two hydropower reservoirs in Jämtland region, Sweden. Nutrients (phosphorus and nitrogen) were added to Stor-Mjölkvattnet and upstream Burvattnet was a reference system. The study cover the years 2001-2009 and 2016, and nutrients were added to Stor-Mjölkvattnet during 8 consecutive years (2002-2009). For detailed method description, see Milbrink et al. (2025), https://doi.org/10.1080/02705060.2025.2511868
Documentation files
Documentation files
Citation and access
Citation and access
Data access level:
Creator/Principal investigator(s):
- Göran Milbrink – Uppsala University - Department of Ecology and Genetics
Research principal:
Principal's reference number:
- SLU.ma.2025.IÄ-1
Data contains personal data:
No
Citation:
Language:
Method and outcome
Method and outcome
Time period(s) investigated:
Species and taxons:
Data collection - Biological tests
Data collection - Biological tests
Mode of collection:
Biological tests
Description of the mode of collection:
Standardised test-fishing were performed from mid-August to early September in 2001-2009 and 2016 with nylon nets (length x height 30 x 1.5 m) of the Nordic type with 12 predetermined sections of different mesh sizes ranging from 5 to 55 mm knot to knot (Appelberg 2000; CEN 2005). Eight stations in each lake were randomly chosen largely covering the different depth zones of Stor-Mjölkvattnet and Burvattnet. The sampling intensity was 64 net nights in each lake each year.
Appelberg M (2000) Swedish standard methods for sampling freshwater fish with multi-mesh gillnets. Fiskeriverket Information 2000:1. 36pp
CEN (2005) Water quality – sampling of fish with multi-mesh gillnets. Ref. No. EN 14757:2005.
Time period(s) for data collection:
2001-09-05 - 2016-08-19
Temporal resolution:
1 year
Geographic coverage
Geographic coverage
Geographic location:
Geographic description:
Stor-Mjölkvattnet: SMHI lake register number 708479-138058, outlet coordinates (WGS84) 63.8502°N, 13.3767°E.
Burvattnet: SMHI ake register number 709664-137890 (Lill-Burvattnet), 709904-137912 (Stor-Burvattnet), outlet coordinates (WGS84) 63.9558°N, 13.3343°E.
Administrative information
Administrative information
Responsible department/unit:
Department of Aquatic Sciences and Assessment
Other research principals:
Funding
Funding
Funding agency:
- Swedish Energy Agency
Opens a new window at ror.org.
ROR
Award number:
P 12565-1
Award title:
Restoration of impounded lakes: optimizing production of fish and plankton through balanced nutrient enrichment
Funding agency:
- Oscar and Lili Lamms Minne Foundation
Opens a new window at ror.org.
ROR
Award number:
FO2015-0060
Award title:
Restaurering av fiskbestånd skadade av vattenkraftsreglering – uppföljning av ett långtidsförsök
Topic and keywords
Topic and keywords
Swedish Standard Classification of Research Subjects 2025:
Publications
Publications
Citation:
Milbrink, Göran, Rydin, Emil & Vrede, Tobias. (2025). Contrasting responses of Arctic charr and brown trout to compensatory nutrient enrichment in an oligotrophicated reservoir. Journal of Freshwater Ecology 40(1):2511868 https://doi.org/10.1080/02705060.2025.2511868
