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|Variables||Period||Frequency of sampling||Llyn Brianne||Loch Awe||Coalburn||Tummel|
|Foliar sampling and analysis||1995-2005||2 years|
|Soil solution||1995-2001||2 weeks|
|Atmospheric deposition||1995-1996||2 weeks|
|Leaf area index||2009-2010||Once|
|SO2,O3,NOx above canopy||2002||Monthly|
|SO2,O3,NOx,NH4 below canopy||2002-2005||Monthly|
|Ground vegetation||1998-2004||3 years|
|Quantitative ground vegetation||2010||Once|
|Litter fall quantification||2001-2007||4 weeks|
|Litter fall analysis||2010||Once|
|Growth uptake of heavy metals||2003||Single measurement|
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