Diatom data from north Baffin Island

Purpose: Diatoms are unicellular algae found in aquatic environments. Since diatom species vary in their responses to limnological conditions, diatom assemblages are used as bio-indicators. Diatom assemblages in surface sediments were analyzed from twenty lakes and ponds in Sirmilik National Park (SNP), along with limnological data for each site, with the goal of quantitatively relating diatom assemblages to particular physico-chemical conditions. Lake sediment cores spanning at least 2 centuries were also collected from two sites for detailed analysis with the goal of measuring the impact of recent environmental change in the context of pre-industrial lake conditions.研究目的：硅藻（diatom）是栖息于水生环境中的单细胞藻类。由于不同硅藻物种对湖沼学（limnological）条件的响应存在显著差异，硅藻群落（diatom assemblages）常被用作生物指示物（bio-indicator）。本数据集对西尔米利克国家公园（Sirmilik National Park, SNP）内20个湖泊与池塘的表层沉积物中的硅藻群落进行了分析，并同步采集各采样点的湖沼学数据，旨在定量建立硅藻群落与特定物理化学环境条件之间的关联。此外，本数据集还从两个采样点采集了至少覆盖2个世纪的湖泊沉积物岩芯，以开展详细分析，从而量化评估近世环境变化在工业化前湖泊环境背景下的影响。