Integrating water quality monitoring and diatom community trends to determine landscape-level change in protected lakes.

These data represent water quality measurements and diatom counts from surface sediments collected from lakes in five National Park units in the Great Lakes Region (USA) between 2005 and 2018. Water quality measurements were made three times annually during the growing season; data are presented as growing season means. Surface sediment samples were collected from the same lakes every 3-5 years over more than a decade to analyze diatom community turnover. Diatom data are presented as proportions relative to total diatom counts in each sample; only taxa occuring at 2% or greater in a given park were included.   Â本数据集收录了2005年至2018年间，美国五大湖地区5座国家公园单元内湖泊表层沉积物的水质测量数据与硅藻（diatom）计数结果。水质测量于每年生长季开展三次，数据以生长季平均值形式呈现。为分析硅藻群落更替规律，研究团队在十余年时间内每3至5年对上述湖泊采集表层沉积物样本。硅藻数据以各样本中硅藻总计数的占比形式展示；仅纳入在对应国家公园内占比不低于2%的分类单元（taxa）。