Mesozooplankton size data from Disko Bay, West Greenland, 2008

The study site was located in the Disko Bay off Qeqertarsuaq, western Greenland. Due to land-connected sea ice coverage during winter, 2 sampling sites were combined. At the first site in winter (21 February to 23 March 2008), sampling was conducted through a hole in the ice at ca. 65 to 160 m depth approximately 0.5 nautical mile (n mile) south of Qeqertarsuaq (69° 14' N, 53° 29' W). In spring and summer (9 April to 18 July), sampling was done at a monitoring station 1 n mile south from Qeqertarsuaq (69° 14' N, 53° 23' W) at 300 m depth. Sampling was carried out between 10:00 and 17:00 h. During sampling from the ice, mesozooplankton was collected using a modified WP-2 net (45 µm) equipped with a closing mechanism (Hydrobios). Samples were collected in 3 depth strata (0-50, 50-100, and 100-150 m). During ship-based sampling, mesozooplankton was collected with a multinet (50 µm) equipped with a flow meter (Multinet, Hydrobios type midi), and 2 additional depth strata (150-200m and 200-250 m) were included. In addition to the seasonal study one diurnal investigation with sampling every 6 h was conducted from 29 April at 12:00 h to 30 April 30 at 12:00 h. Samples were immediately preserved in buffered formalin (5% final concentration) for later analyses. Biomass values of the different copepod species were calculated based on measurements of prosome length, and length/weight relationships. Two regressions for Calanus spp. were established for biomass calculations: one applicable prior to and during the phytoplankton bloom until 4 May, and another from 9 May onwards.

研究区域位于格陵兰西部凯克塔苏瓦克附近的迪斯科湾。由于冬季存在陆连海冰覆盖，两个采样点被合并。冬季的第一个采样点（2008年2月21日至3月23日）位于凯克塔苏瓦克以南约0.5海里（nautical mile，n mile）处（北纬69°14′，西经53°29′），采样通过冰面钻孔进行，深度约为65至160米。春季和夏季（4月9日至7月18日）的采样在凯克塔苏瓦克以南1海里处的监测站进行（北纬69°14′，西经53°23′），深度为300米。采样时间为每日10:00至17:00。冰面采样时，使用改装的WP-2网（45 µm）收集中型浮游动物，该网配备闭合装置（Hydrobios）。样本采集自3个深度层（0-50米、50-100米和100-150米）。船载采样时，使用配备流量计的多联网（50 µm，Multinet，Hydrobios midi型）收集中型浮游动物，并增加了两个深度层（150-200米和200-250米）。除季节性研究外，还于4月29日12:00至4月30日12:00进行了一次昼夜调查，每6小时采样一次。样本立即用缓冲福尔马林（终浓度5%）固定，以备后续分析。不同桡足类物种的生物量基于前体长度（prosome length）测量值及体长-体重关系计算得出。针对哲水蚤属（Calanus spp.）建立了两个生物量计算回归方程：一个适用于浮游植物水华前及水华期间（截至5月4日），另一个适用于5月9日之后。