Light penetration and some related characteristics in small forest lakes in Southern Finland

1984 ◽  
Vol 22 (2) ◽  
pp. 811-816 ◽  
Author(s):  
Roger I. Jones ◽  
Lauri Arvola
Keyword(s):  
Light Penetration ◽  
Forest Lakes ◽  
Small Forest

Carbon dioxide efflux and ecosystem metabolism of small forest lakes

2019 ◽  
Vol 82 (1) ◽  
Author(s):  
Kenneth Thorø Martinsen ◽  
Theis Kragh ◽  
Kaj Sand-Jensen
Keyword(s):  
Carbon Dioxide ◽  
Ecosystem Metabolism ◽  
Forest Lakes ◽  
Carbon Dioxide Efflux ◽  
Small Forest

Autumnal and vernal circulation of small forest lakes in Southern Finland

1984 ◽  
Vol 22 (1) ◽  
pp. 103-107 ◽  
Author(s):  
K. Salonen ◽  
L. Arvola ◽  
M. Rask
Keyword(s):  
Forest Lakes ◽  
Small Forest

Short- and long-term patterns of 137Cs in fish and other aquatic organisms of small forest lakes in southern Finland since the Chernobyl accident

2012 ◽  
Vol 103 (1) ◽  
pp. 41-47 ◽  
Author(s):  
Martti Rask ◽  
Ritva Saxén ◽  
Jukka Ruuhijärvi ◽  
Lauri Arvola ◽  
Marko Järvinen ◽  
...  
Keyword(s):  
Chernobyl Accident ◽  
Aquatic Organisms ◽  
Forest Lakes ◽  
Short And Long Term ◽  
Small Forest

Transfer of 137Cs into fish in small forest lakes

2010 ◽  
Vol 101 (8) ◽  
pp. 647-653 ◽  
Author(s):  
Ritva Saxén ◽  
Sirpa Heinävaara ◽  
Martti Rask ◽  
Jukka Ruuhijärvi ◽  
Heidi Rand
Keyword(s):  
Forest Lakes ◽  
Small Forest

scholarly journals Hydromycoflora fungi of small forest lakes "Suchary" in the Wigry National Park

2014 ◽  
Vol 30 (2) ◽  
pp. 167-180 ◽  
Author(s):  
Bazyli Czeczuga
Keyword(s):  
National Park ◽  
Forest Lakes ◽  
First Time ◽  
Small Forest

One hundred and fifteen species of fungi were found in the small forest lakes "Suchary" in the Wigry National Park. The following fungi were recorded for the first time from Poland: <i>Blastociadella simplex, Rhizoclosmatium globosum, R. hyalinum, Rhopalophlyctis sarcoptoides, Condylospora spumigena, Gyoerffyella myrmecophagiforms, Helicon pluriseptatum</i> and <i>Kontospora halophila</i>.

Phytoplankton and Acidification in Small Forest Lakes in Finland

1990 ◽  
pp. 973-983 ◽  
Author(s):  
Päivi Kippo-Edlund ◽  
Anneli Heitto
Keyword(s):  
Forest Lakes ◽  
Small Forest

Acidity and humic matter in small forest lakes

1987 ◽  
Vol 62 ◽  
pp. 343-344
Author(s):  
P. Kortelainen ◽  
J. Mannio ◽  
I. Mäkinen
Keyword(s):  
Humic Matter ◽  
Forest Lakes ◽  
Small Forest

Mercury methylation and demethylation in aerobic surface waters

1995 ◽  
Vol 52 (8) ◽  
pp. 1597-1608 ◽  
Author(s):  
Tuula Matilainen ◽  
Matti Verta
Keyword(s):  
Particulate Matter ◽  
Surface Waters ◽  
Mercury Methylation ◽  
Sterile Filtration ◽  
Water Layers ◽  
Formaldehyde Treatment ◽  
Forest Lakes ◽  
Water Ph ◽  
Aerobic Water ◽  
Small Forest

Potential rates of methylmercury formation and demethylation were studied in runoff waters, sediment trap material, and aerobic water layers of five small forest lakes by radioisotope methods. In addition, the roles of microbes and particulate matter in methylation and demethylation processes were examined. Methylation rates were low (≤0.12%∙d−1) in all sites studied. Water pH (4.9–6.9) had no clear effect on methylmercury formation. Methylation took place in filtered water (nominal pore size 0.2 μm) and in formaldehyde-treated or autoclaved samples, but was strongly suppressed by both dissolved organic matter (color) and particulate matter. Demethylation rates in surface waters (≤13.2%∙d−1) were decreased by low temperatures and the process was blocked by sterile filtration, formaldehyde treatment, and autoclaving. The results indicate that mercury methylation in aerobic humic waters is an accidental process caused by bacterial exoenzymes or other dissolved compounds. Methylmercury demethylation was clearly microbial in nature.

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