Sedimentological properties, bulk nitrogen and organic carbon elemental and isotopic compositions, and vascular plant biomarker loadings of suspended, bank, and bed sediments collected from the northern Mackenzie River basin, Canada

We collected water from river depth-profiles during the peak freshets in July 2013, June 2017, 2018, and 2019. Sampling locations are situated in the northern Mackenzie River basin: Mackenzie River in the delta, the Mackenzie River at Tsiigehtchic, the Arctic Red River at Tsiigehtchic, and the Peel River at Fort McPherson. Depth-profiles were retrieved using a horizontally-mounted ~5.1 L Niskin bottle. The collected water was subsequently filtered through 0.22 um polyethersulfone filters. Bank and bed sediments were retrieved using a metal spoon or dredged with a metal bucket. This data set contains grain size distribution, bulk nitrogen and organic carbon contents, radiocarbon contents for the particulate phase as well as vascular plant biomarker loadings.

本团队于2013年7月、2017年6月、2018年及2019年的丰水期，从麦克默里堡北部流域的麦克默里河三角洲、Tsiigehtchic段的麦克默里河、Tsiigehtchic段的北极红河以及福克斯克森堡的皮尔河等采样点采集了河水深度剖面。采集过程中，我们运用了水平放置的约5.1升Niskin瓶获取深度剖面。所采集的河水随后经过0.22微米的聚醚砜滤膜进行过滤。河岸及河床沉积物通过金属勺取出或用金属桶挖取。该数据集包含了颗粒大小分布、总氮和有机碳含量、颗粒相的放射性碳含量，以及维管植物生物标志物负荷。