Seasonal ice cover and catchment changes at northern thermokarst ponds in Nunavik: Observations from automated time-lapse cameras

Thermokarst ponds and lakes are common features of Arctic and subarctic landscapes, developing in depressions that result from the thawing of ice-rich permafrost. Most of these water bodies are shallow (Materials and methods Reconyx PC800 Professional cameras were installed on metal support rods or coniferous trees at approximately 5-10 m distance from the edge (peripheral bulge) of thermokarst lakes and ponds, taking 6 photos every day at 1 hour intervals between 10:00 AM and 15:00 PM Eastern Standard Time (EST). The cameras were protected in a metal housing to minimize environmental hazards and damage. The cameras were placed at 2-3 meters height above ground.

热喀斯特池塘与湖泊是北极和亚北极景观中常见的特征，它们形成于富含冰冻土的永久冻土融化所造成的洼地之中。这些水体大多较为浅薄（材料与方法：Reconyx PC800 专业相机被安装在金属支架或针叶树上，距离热喀斯特湖泊和池塘边缘（外围膨胀）约5-10米处，每天在上午10:00至下午3:00之间，每隔1小时拍摄6张照片。为了最大限度地减少环境危害和损坏，相机被安置在一个金属外壳内。相机被放置在地面上方2-3米的高度。)