Description: <p>The <span style="background-color:rgb(255,255,255); color:rgb(74,74,74); font-family:"Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;"><span style="display:inline !important; float:none; font-style:normal; font-variant-caps:normal; font-variant-ligatures:normal; font-weight:400; letter-spacing:normal; text-align:start; text-decoration-color:initial; text-decoration-style:initial; text-indent:0px; text-transform:none; word-spacing:0px;">Alpine Treeline Warming Experiment was a multi-location warming, watering, and common garden experiment to examine tree range shifts. The project combined common gardens with climate manipulations, using infrared heaters to warm soil and plant surfaces by an amount comparable to current average projections of climate warming in the year 2100. ATWE set out to answer three basic questions: (1) Will subalpine trees, currently restricted from cooler, higher elevations, move into alpine habitat and replace alpine plant species as a result of climate warming? (2) Will subalpine trees be stressed by warmer temperatures and be less successful in their existing elevational ranges as a result of climate warming? (3) How will ecosystem properties and species population differences influence the effects of climate warming on subalpine or alpine species within and beyond their current elevational ranges?</span></span></p>