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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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CH 4 efflux from the pelagic area of the<br />

<strong>lakes</strong><br />

CH 4 efflux mol m -2 (ice-free period) -1<br />

0.7<br />

0.6<br />

0.5<br />

0.4<br />

0.3<br />

0.2<br />

0.1<br />

0.0<br />

MJ N AM TL HJ VK OnJ OrJ PJ<br />

Littoral effluxes 0.2 – 7.7 mol CH 4 m -2<br />

(ice-free period) -1<br />

0.70<br />

0.60<br />

0.50<br />

0.40<br />

0.30<br />

0.20<br />

0.10<br />

0.00<br />

R² = 0.758<br />

R² = 0.891<br />

0.001 0.100 10.000<br />

Lake area km 2<br />

No anoxia <strong>in</strong><br />

the hypolimnion

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