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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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The highest CH 4 concentrations are me<strong>as</strong>ured <strong>in</strong> late<br />

summer <strong>in</strong> the hypolimnion<br />

Depth m<br />

-0.5<br />

-1.0<br />

-1.5<br />

Mekkojärvi<br />

The maximum CH 4<br />

concentrations<br />

me<strong>as</strong>ured <strong>in</strong> the study<br />

<strong>lakes</strong> varied between<br />

170 <strong>and</strong> 1900 µmol L -1<br />

-2.0<br />

-2.5<br />

150 180 210 240 270 300<br />

May Jun Jul Aug Sep Oct<br />

20<br />

40<br />

60<br />

80<br />

100<br />

120<br />

140<br />

160

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