Department of Environmental Medicine, Poznan University of Medical Sciences, Rokietnicka 8, 60-806, Poznań, Poland.
Department of Water Protection, Faculty of Biology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 6, 61-614, Poznań, Poland.
J Phycol. 2019 Dec;55(6):1412-1415. doi: 10.1111/jpy.12905. Epub 2019 Aug 27.
We report the reappearance of the rare charophyte Nitella translucens in Poland. It was identified in the soft-water lobelian Lake Jeleń (North Poland) during 2013 and 2018 phytolittoral surveys. This species is considered critically endangered in various European countries and was previously classified as extinct in Poland. Its occurrence was confirmed using morphological and molecular data (ITS1-18S, ITS2-28S, rDNA, and rbcL). The N. translucens occupied ~20% of the lake bottom, at depths of 1.5-6.5 m, water pH 7.5-8.6, conductivity of 59-66 μS · cm , and total nitrogen and phosphorus during growing season in the range of 1.1-1.4 mg · L and 0.07-0.1 mg · L , respectively. It co-occurred mainly with plant species typical for lobelia lakes: Isoetes lacustris, Littorella uniflora, and Myriophyllum alterniflorum, as well as Ceratophyllum demersum and Elodea canadensis, which are characteristic for eutrophicated waters. It appears that N. translucens may thrive in lobelia lakes during their transformation to more eutrophic states.
我们报告了珍稀轮藻 Nitella translucens 在波兰的重现。它是在 2013 年和 2018 年的软水生植物湖 Jeleń（波兰北部）的植物滨岸带调查中被识别出来的。在许多欧洲国家，该物种被认为是极度濒危物种，此前在波兰被归类为灭绝物种。它的存在通过形态学和分子数据（ITS1-18S、ITS2-28S、rDNA 和 rbcL）得到了证实。N. translucens 占据了湖泊底部的约 20%，深度为 1.5-6.5 米，水的 pH 值为 7.5-8.6，电导率为 59-66 μS·cm，总氮和总磷在生长季节的范围分别为 1.1-1.4mg·L 和 0.07-0.1mg·L。它主要与几种典型的风铃草湖植物共存：湖生真藓、宽叶泽苔草和菱叶狸藻，以及莕菜和加拿大眼子菜，这些植物是富营养化水域的特征种。看来，N. translucens 可能在风铃草湖转变为更富营养化的状态时茁壮成长。
