Physicochemical and biological variables measured in 110 national monitoring lakes between 1992 and 2022.
Se engelsk beskrivning.
Datafiler
Datafiler
Citering och åtkomst
Citering och åtkomst
Skapare/primärforskare:
Forskningshuvudman:
Diarienummer hos huvudman:
- SLU.ma.2025.IÄ-2
Data innehåller personuppgifter:
Nej
Citering:
Tillgänglighetsnivå:
Språk:
Metod och utfall
Metod och utfall
Tidsperiod(er) som undersökts:
Dataformat/datastruktur:
Datainsamling - Mätningar och tester
Datainsamling - Mätningar och tester
Insamlingsmetod:
Mätningar och tester
Beskrivning av insamlingsmetod:
Sampling and analyses of all abiotic and biological variables were based on standard protocols throughout the study period. These protocols are quality controlled and certified by the Swedish Board for Accreditation and Conformity Assessment (SWEDAC; https://www.swedac.se/). All physicochemical and biological analyses were performed at the Department of Aquatic Sciences and Assessment following international (ISO) or European (EN) standards (Fölster et al., 2014). Detailed information concerning methods and quality control can be found at https://www.slu.se/en/departments/aquatic-sciences-assessment/laboratories/vattenlabb2/. In brief, for physicochemical measurements mid-lake surface water samples (0.5 m) were taken annually during four sampling intervals (March to November) using a Plexiglas sampler. Phytoplankton was sampled quantitatively in late summer (August) with a tube sampler from the epilimnion in the open-water mid-lake area. Benthic macroinvertebrate samples were collected in autumn (mainly October/November) from littoral and profundal habitats. For littoral habitats, macroinvertebrates were collected using standardised kick sampling with a hand net (0.5 mm mesh). Five standardised kick samples (20-s duration, 1 m long, ca 0.5–1 m depth) were taken from stony, vegetation-free sites in each lake. For profundal macroinvertebrate collections consisted of five Ekman grab samples (247 cm2) taken within a 150 m x 150 m quadrate situated over the deepest area of the lake, washed through a 0.5 mm mesh and preserved in 70% ethanol (final concentration).
Tidsperiod(er) för datainsamling:
1992-03-01 - 2022-11-30
Datainsamlare:
- Sveriges lantbruksuniversitet
Öppnar nytt fönster hos ror.org.
RORÖppnas i en ny tabb
Geografisk täckning
Geografisk täckning
Geografisk plats:
Geografisk beskrivning:
National lake monitoring data. The 110 study lakes cover broad geographic gradients in latitude (range 55.5 to 68.4 ºN) and longitude (range 11.6 to 23.4 ºE), and ecosystem sizes (median lake surface area = 0.56 km2).
Administrativ information
Administrativ information
Ansvarig institution/enhet:
Institutionen för vatten och miljö
Medverkande:
Uppdragsgivare:
- Sveriges lantbruksuniversitet
Öppnar nytt fönster hos ror.org.
RORÖppnas i en ny tabb
Soil, Water, and Environmental Data:
Finansiering
Finansiering
Finansiär:
- Havs- och Vattenmyndigheten
Öppnar nytt fönster hos ror.org.
RORÖppnas i en ny tabb
Information om finansiering:
The Swedish Environmental Protection Agency and the Swedish Agency for Marine and Water Management financed these long-term monitoring programmes.
Finansiär:
- Sveriges lantbruksuniversitet
Öppnar nytt fönster hos ror.org.
RORÖppnas i en ny tabb
Information om finansiering:
Faculty support (professor)
Ämnesområde och nyckelord
Ämnesområde och nyckelord
Standard för svensk indelning av forskningsämnen 2011:
INSPIRE topic categories:
Relationer
Relationer
Publikationer
Publikationer
Citering:
Johnson, R.K., Goedkoop, W., Lau, D. (2025). Multi-decadal trends in Northern lakes show contrasting responses of phytoplankton and benthic macroinvertebrates to climate change. Global Change Biology, http://dx.doi.org/10.1111/gcb.70274Öppnas i en ny tabb
