Lakes; Chemistry

Updated 2011-03-08

Annual measurements of physical, chemical, and biological variables are taken in small to medium sized, mostly minimally disturbed lakes, situated across the country. Of the 110 lakes that are part of the Trend Station Lake monitoring programme, 20 are situated in AMAP area. The main aim of the monitoring programme is to document long-term changes related to global or regional change and human-generated stressors. To complement the Trend Station Lake monitoring programme, national lake surveys provide spatial data needed to determine regional patterns, and coupled with time-series data, changes in surface water quality. The National Lake Survey (the Surveillance Stations, re-sampled stations) programme for lake water quality, started in 2007 and results in data of all Swedish lake conditions. Each year some 800 new lakes are sampled to determine biological, chemical and physical conditions; lakes are resampled at 6 year intevals. 4824 lakes are sampled in the country during a six-year sampling cycle, with 1270 situated in AMAP area. The variables included in the Trend Station Lake monitoring programme include water chemistry, fish, phytoplankton, macrophytes, zooplankton, and benthic invertebrates, whilst and National Lake Survey is focused solely on water chemistry.

This is a National Implementation Plan (NIP) project
Comments and additional information:

The network is based on EMEP-squares and gives between 19 and 134 lakes sampled per county every year. Sampling at 0.5 - 2.0 m depth during fall circulation. Temperature, pH, NH4, NO2-NO3, Tot-N, Tot-P, PO4, TOC, Si, Absorbance, Fe, Mn, Alkalinity, Ca, Mg, K, Na, SO4, Cl, F, and trace metals Cu, Cd, Pb, Cr, Ni, Co, Ni, V, Al are analysed.

Time frame

Status
Ongoing
Project time span
1984 - 2099
Data collection
1984 - 2010
Data processing
1984 - 2010
Data reporting
1984 - 2010

Contact information

Contact person
Richard Johnson
Address
Swedish University of Agricultural Sciences (SLU) Faculty of Natural Resources and Agricultural Sciences, Dept. of Aquatic Sciences and Assessment 750 07 Uppsala, Box 7050 Sweden
Phone
+46 18 67 31 27
Fax
+46 18 67 31 10
Email
es.uls@nosnhoj.drahcir
Other project contacts
Jens Fölster (National Lakes Survey) Swedish University of Agricultural Sciences (SLU) Dept of Aquatic Sci and Assessment, 750 07 Uppsala, Box 7050 Phone: +4618 6731 26 E-mail: jens.folster@slu.se Ecke Frauke (Macrophytes), Luleå Univ. of Technology (LTU), Applied Geology, SBN-GEOVET e-mail: Frauke.Ecke@ltu.se and Lars Sonesten (database) Phone: +4618-673007, 070-2562444 E-mail: lars.sonesten@slu.se Swedish EPA contact personer: Ulrika Stensdotter Blomberg (Environmental Monitoring, Freshwater) Phone:+4610 6981 559 fax:+4610 6981 585 E-mail: ulrika.stensdotter@naturvardsverket.se Jonas Rodhe (AMAP) Phone: +4610 608 1307 e-mail: jonas.rodhe@naturvardsverket.se

Parameters and Media

Parameter groups measured/observed/modelled
Acidification parameters
Biological effects
Heavy metals
Other metals/elements
Media sampled/studied/modelled
Algae (algae, phytoplankton)
Freshwater benthos
Freshwater fish
Freshwater sediments
Higher plants
Additional information or further specification of types of data / information collected, species / tissues / organs sampled, etc.

Eutrophication, Temperature, pH, NH4, NO2-NO3, Tot-N, Tot-P, PO4, TOC, Si, Absorbance, Fe, Mn, Alkalinity, Ca, Mg, K, Na, SO4, Cl, F, and trace metals Cu, Cd, Pb, Cr, Ni, Co, Ni, V, Al, hydrochemistry, epiphyton, botten fauna, time-serie,

Geography

Regions studied
Arctic, Circumpolar
Europe
Fennoscandia
Lapland
Scandinavia
Sweden
Stations or areas where observations are made

Trend stations in AMAP area: Latnjajaure (X:758677 Y:161050), Abiskojaure (X:758208 Y:161749), Valkeajärvi (X:751252 Y:175433), Pahajärvi (X:742829 Y:183168), Bergträsket (X:733110 Y:182955), Brännträsket (X:728095 Y:175926), Norra Reivo (X:730091 Y:165102), Vuolgamjaure (X:728744 Y:162653), Louvvajaure (X:736804 Y:160569), Jutsajaure (X:744629 Y:167999), Njalakjaure (X:741340 Y:153576), Båtkåjaure (X:742442 Y:153530), Stor-Tjulträsket (X: 731799 Y: 151196), Storvindeln (X: 728271 Y: 157578), Vitträsket (X: 718150 Y: 168580), Stor-Arasjön (X: 716717 Y: 158596), Bjännsjön (X: 713404 Y: 172465), Ögerträsket (X: 712246 Y: 170866), Täftesträsket (X: 711365 Y: 171748), Sidensjön (X: 709218 Y: 169710), Svartvattnet (X: 706672 Y: 167201)

Data availability

Are data archived or planned to be archived at an AMAP Thematic Data Centre?
no
If no (or only part of data are reported to a TDC), where and how are (other) data stored?
Data is available at the SLU Data host: (http://www.slu.se/sv/fakulteter/nl/om-fakulteten/institutioner/institutionen-for-vatten-och-miljo/miljoanalys/sjoar-och-vattendrag/) and (http://info1.ma.slu.se/db.html ). Contact also with Lars Sonesten, Dept of Aquatic Sci and Assessment, SLU, Uppsala. Phone: +4618-673007, 070-2562444 E-mail: lars.sonesten@slu.se Data are also available on SEPA website: (http://www.naturvardsverket.se/sv/Start/Tillstandet-i-miljon/Miljoovervakning/Miljoovervakningsdata/)
References to key publications (or planned publications) and data reports
Data reports are available on SEPA webpage: (http://www.naturvardsverket.se/sv/Start/Tillstandet-i-miljon/Miljoovervakning/Rapporter-och-nyhetsbrev/Rapporter---Sotvatten/)
Samples/specimens archived in specimen banks?
No
Specimen banking information

Information are on SLU website (http://info1.ma.slu.se/db.html) or contact Jens Fölster Swedish University of Agricultural Sciences (SLU) Dept of Aquatic Sciences and Assessment, 750 07 Uppsala, Box 7050 Phone: +4618 6731 26 E-mail: jens.folster@slu.se

Methods & Procedures

Procedures and methodology used for, e.g., sampling and sample storage, sample pretreatment, extraction and analysis, including which laboratories are involved, references to methods employed, etc.

Procedures and methods are described on SLU website: (http://info1.ma.slu.se/db.html)

Additional Information

Is this a bi- AND multi-lateral project (i.e. a project involving cooperation between different countries)?
No
Other institutes involved in the project

Swedish EPA; Luleå Univ. of Technology (LTU), Applied Geology, SBN-GEOVET

Is this project reporting to other organizations/programmes?

Swedish EPA;

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