On 20 April, the 2 and5 μm HF morphotypes were responsible for the maximum density of the HF community. Prog. l–1 the culture of the cladoceran on FLW was a success. (2018). The coastal waters of the SEMS are also considered oligotrophic with low algal biomass (chlorophyll-a) levels (Berman et al., 1984; Azov, 1986; Herut et al., 2000) and low PP rates (Raveh et al., 2015; Rahav et al., 2018), despite being exposed to various anthropogenic stressors (Frank et al., 2017; Rahav and Bar-Zeev, 2017; Grossowicz et al., 2019; Kress et al., 2019; Raveh et al., 2019). U.S.A. 110, 9824–9829. 14, 2334–2347. In addition, the algae provided more P and enhanced the P:C ratio, which was maximal when the Daphnia were fed Cryptomonas. Microb. PO4 levels remained constant throughout the duration of the experiment in both the PO4-amended microcosms and the PO4 + ATP addition treatments (Figure 1B and Supplementary Table S1), while a reduction was measured in the ATP (57%) and the 2-2-AEPn (81%) bioassays (Figure 1). The data in the figures and table are averages and standard deviations (n = 3). In each case, the fourth generation did not reproduce before the end of the experiments. Contribution of mono and polysaccharides to heterotrophic N2 fixation at the eastern Mediterranean coastline. In that study, the lower N:P ratio was observed when Cryptomonas was added to the natural food. The pho regulon-dependent Ugp uptake system for glycerol-3-phosphate in Escherichia coli is trans inhibited by P(i). In that way, Speaks and Duffy demonstrated that Daphnia pulex can take up DOC in amounts which increase with ambient DOC concentrations, but the amount of DOC lost either by respiration or excretion was greater than the amount retained (Speaks and Duffy, 1998). Environ. 101–111. Sewage outburst triggers Trichodesmium bloom and enhance N2 fixation rates. For example, the enzyme 5′-nucleotidases was responsible for most of the hydrolysis of ATP in the P-amended mesocosms of east Mediterranean open water (Sebastián et al., 2012). Cycles 31, 1010–1031. doi: 10.1093/plankt/10.6.1239. The size of the primipara increased from generation to generation (successively 1.028, 1.246 and 1.263 mm). P-limited bacteria but N and P co-limited phytoplankton in the Eastern Mediterranean - A microcosm experiment. Indeed, the Daphnia fed 0.45 μm FLW had the lowest growth rate, it increased when Daphnia were fed FLW and, when the autotrophic or the heterotrophic food was introduced, growth was at first more rapid with the alga than with the HF, but, after ~2 weeks, the best growth was observed with the HF.

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