TY - DATA T1 - Dataset underlying the publication: Seasonal dynamics of the standard test species <i>Lemna<i> sp. in outdoor microcosms PY - 2024/03/20 AU - Gertie Arts AU - Jasper van Smeden AU - Marieke F. Wolters AU - J.D.M. Belgers AU - Arrienne M. Matser AU - Udo Hommen AU - Eric Bruns AU - Simon Heine AU - Andreas Solga AU - Seamus Taylor UR - DO - 10.4121/d553a536-880a-4cd7-ae75-30c009ba00c9.v1 KW - Field experiment KW - Growth rate KW - Model parameters KW - <i>Lemna<i> sp. KW - Risk assessment KW - Ecological data KW - Biomass KW - Environmental parameters KW - Water quality KW - N/P ratio N2 - <p>The dataset covers photos of the microcosms used to collect the seasonal data for <i>Lemna<i> sp. populations; the results of the pre-experiments to study the appropriate nutrient levels for the growth of <i>Lemna<i> sp.; the experimental datasets covering experimental data over 2 consecutive years including biotic (biomass and numbers of fronds) and abiotic data from the aquatic habitat of <i>Lemna<i> sp. in the temperate climate region and the statistical regression results; and finally the weather data. The dynamics of biomass and numbers of fronds of <i>Lemna<i> sp. were studied using 100 small microcosms. Each microcosm was 45 cm in internal diameter, with a surface area of 0.174 m2, a height of 67 cm, a water depth of 56.5 cm and a volume of 26.56 L. The microcosms were buried in the ground to reduce fluctuation of water temperatures, and to provide conditions comparable to a small (edge-of-field) pond or ditch. Parameters monitored included biomass (fresh and dry weight), seasonal growth rates, relevant environmental parameters and weather data. This dataset includes the 2-year experimental biotic (biomass and numbers of fronds) and environmental data (water quality data, weather data).</p> ER -