Hydrochemistry data of polygon tundra in the Kolyma Delta near Pokhodsk (NE Siberia) sampled in 2012@en

Patterned ground of the polygonal tundra yields sensitive indicators of environmental and climate change. Polygon ponds, mires and cryosoils are typical components of Arctic Siberian wetlands underlain by permafrost. Field studies of recent environmental dynamics were carried out within the frame of the joint German-Russian DFG-RFBR project Polygons in tundra wetlands: state and dynamics under climate variability in Polar Regions (POLYGON) field studies were carried out in the Kolyma Delta in 2012 around the small fishing settlement Pokhodsk in summer 2012 and 2013. Using a multidisciplinary approach, several stages of polygonal systems were studied as modern tundra habitats . The floral and faunal associations of the polygonal tundra landscape were described. Ecological, hydrological, meteorological, limnological and cryological features were analyzed in order to evaluate modern environmental conditions and their essential controlling parameters. A monitoring program was carried out to measure changes of air, water and ground temperatures as well as water conductivity, water level and soil moisture and to collect water, diatom, zooplankton, and zoobenthos, samples. These data sets contain environmental field data, logger data, various ecological data, and analyses of sediments and water.多边形苔原的图案化地表（patterned ground）是环境与气候变化的敏感指示因子。多边形塘、泥炭湿地（mires）与冻土土壤（cryosoils）是西伯利亚北极多年冻土湿地的典型组成要素。针对近期环境动态的野外研究依托德俄联合DFG-RFBR项目“苔原湿地多边形体：极地气候变异下的状态与动态（POLYGON）”开展，野外调查于2012年及2013年夏季在科雷马三角洲波霍德斯克小型渔镇周边区域进行。研究采用多学科方法，将多边形系统的多个演化阶段作为现代苔原生境展开分析，对多边形苔原景观中的动植物群落进行了系统描述。为评估现代环境状况及其核心控制参数，研究人员对生态、水文、气象、湖沼学及冻土学特征开展了系统性分析，并建立监测方案以测定空气、水体与土壤温度，以及水体电导率、水位和土壤湿度的变化，同时采集水体、硅藻、浮游动物及底栖动物样本。本数据集涵盖环境野外实测数据、记录仪监测数据、各类生态数据，以及沉积物与水体的分析结果。