Earth and Ocean Sciences, School of Natural Sciences and Ryan Institute, National University of Ireland, Galway H91 TK33, Ireland; Department of Biology, Faculty of Marine and Environmental Sciences, University of Cadiz, E11510 Puerto Real, Spain.
Earth and Ocean Sciences, School of Natural Sciences and Ryan Institute, National University of Ireland, Galway H91 TK33, Ireland.
Mar Pollut Bull. 2022 Feb;175:113318. doi: 10.1016/j.marpolbul.2021.113318. Epub 2022 Jan 19.
The control of macroalgal bloom development is central for protecting estuarine ecosystems. The identification of the nutrients limiting the development of macroalgal blooms, and their most likely sources is crucial for management strategies. Three Irish estuaries (Argideen, Clonakilty and Tolka) affected by green tides were monitored from June 2016 to August 2017. During each sampling occasion, biomass abundances, tissue N and P contents, and δN were determined for tubular and laminar morphologies of Ulva. All estuaries showed maximum biomass during summer and minimum during winter. Tissue nutrient contents revealed P rather than N limitation. The δN during the peak bloom indicated agriculture as the most likely source of nitrogen in the Argideen and Clonakilty, and urban wastewaters in the Tolka. No differences in the δN, and the tissue nutrients content were observed between morphologies. The period between May and July is most suitable for bioassessment of green tides.
控制大型海藻水华的发展对于保护河口生态系统至关重要。确定限制大型海藻水华发展的营养物质及其最可能的来源，对于管理策略至关重要。2016 年 6 月至 2017 年 8 月，监测了受绿潮影响的三个爱尔兰河口（Argideen、Clonakilty 和 Tolka）。在每次采样时，都确定了管状和层状形态 Ulva 的生物量丰度、组织 N 和 P 含量以及 δN。所有河口在夏季的生物量最大，冬季的生物量最小。组织养分含量表明磷限制而不是氮限制。高峰期的 δN 表明 Argideen 和 Clonakilty 中的氮最有可能来自农业，而 Tolka 中的氮最有可能来自城市废水。形态之间没有观察到 δN 和组织养分含量的差异。5 月至 7 月之间的时间段最适合进行绿潮的生物评估。
