d="p0010">Warming from −2 to 8 °C led to 10-fold increase in net methylmercury production in an Arctic soil.
dd><dt class="label">•dt><dd>d="p0015">Labile soil organic carbon is the most reactive in fueling rapid methylmercury production.
dd><dt class="label">•dt><dd>d="p0020">Mercury (Hg) methylation is strongly coupled with methanogenesis and iron-reduction.
dd><dt class="label">•dt><dd>d="p0025">Freshly deposited inorganic Hg is more bioavailable than pre-existing Hg for methylation.
dd><dt class="label">•dt><dd>d="p0030">Permafrost thaw could be a significant source of methylmercury to Arctic aquatic ecosystems.
dd>dl>