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Methane as a greenhouse gas and food web fuel in some boreal lakes

Methane as a greenhouse gas and food web fuel in some boreal lakes

Methane as a greenhouse gas and food web fuel in some boreal lakes

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Two-isotope IsoSource model results of the proportions (%) of<br />

algae, heterotrophic bacteria (HB), green suphur bacteria<br />

(GSB), detritus <strong>and</strong> methane oxidiz<strong>in</strong>g bacteria (MOB) <strong>in</strong> the<br />

diets of cladocerans <strong>and</strong> copepods <strong>in</strong> the five <strong>lakes</strong><br />

Cladocera Lake<br />

May<br />

Algae<br />

HB<br />

+GSB+detr MOB<br />

Valkea<br />

Mustajärvi 0-76 23-82 0-17<br />

Valkea<br />

Kot<strong>in</strong>en 34-86 0-58 7-14<br />

Al<strong>in</strong>en<br />

Mustajärvi 14-39 60-80 1-6<br />

Nimetön 8-44 39-68 10-24<br />

Mekkojärvi 42-69 19-39 12-19<br />

Copepoda Lake<br />

May<br />

Algae<br />

HB<br />

+GSB+detr MOB<br />

Valkea<br />

Mustajärvi 0-85 15-75 0-28<br />

Valkea<br />

Kot<strong>in</strong>en 23-28 52-57 17-20<br />

Al<strong>in</strong>en<br />

Mustajärvi 45-66 9-31 24-25<br />

Nimetön 0-17 53-70 29-35<br />

Mekkojärvi 92-98 2-6 0-2<br />

Oct<br />

Valkea<br />

Mustajärvi 0-21 63-83 15-17<br />

Valkea<br />

Kot<strong>in</strong>en 38-47 24-35 27-29<br />

Al<strong>in</strong>en<br />

Mustajärvi 17-26 40-47 34-36<br />

Oct<br />

Valkea<br />

Mustajärvi 4-67 18-71 15-28<br />

Valkea<br />

Kot<strong>in</strong>en 24-51 41-68 8-12<br />

Al<strong>in</strong>en<br />

Mustajärvi 61-69 16-23 15-16<br />

Nimetön<br />

no data<br />

Nimetön 0-13 50-64 35-40<br />

Mekkojärvi 20-65 0-32 35-50<br />

Mekkojärvi 0-29 33-53 37-50

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