Forthcoming Articles http://www.jto.ac.cn EN-US http://www.jto.ac.cn/EN/1009-5470/current.shtml http://www.jto.ac.cn 1009-5470 http://www.jto.ac.cn/EN/10.11978/2022119 http://www.jto.ac.cn/EN/10.11978/2022105 http://www.jto.ac.cn/EN/10.11978/2022118 http://www.jto.ac.cn/EN/10.11978/2022083 http://www.jto.ac.cn/EN/10.11978/2022137 http://www.jto.ac.cn/EN/10.11978/2022014 http://www.jto.ac.cn/EN/10.11978/2022121 moderate ammonium enrichment> control> high ammonium enrichment. High ammonium enrichment significantly reduced the maximum relative electron transport rate and light utilization efficiency, decreasing the carbon pool for ammonium assimilation. Meanwhile, ammonium enrichment significantly enhanced the ammonium ion flux and glutamine synthetase activity, assimilating excess ammonium into amino acids. However, ammonium enrichment reduced the amino acid contents, which might be caused by that amino acids were used to synthesize organic substances such as key secondary metabolites to further regulate and adapt to ammonium toxicity. Therefore, moderate ammonium enrichment was beneficial for the photosynthesis and growth of H. beccarii, while high ammonium enrichment had toxic effect on H. beccarii.]]> http://www.jto.ac.cn/EN/10.11978/2022092 http://www.jto.ac.cn/EN/10.11978/2022108 http://www.jto.ac.cn/EN/10.11978/2022096 http://www.jto.ac.cn/EN/10.11978/2022120 http://www.jto.ac.cn/EN/10.11978/2022101 http://www.jto.ac.cn/EN/10.11978/2022075 http://www.jto.ac.cn/EN/10.11978/2022046 http://www.jto.ac.cn/EN/10.11978/2022025 http://www.jto.ac.cn/EN/10.11978/2022072 http://www.jto.ac.cn/EN/10.11978/2022107 http://www.jto.ac.cn/EN/10.11978/2022099 http://www.jto.ac.cn/EN/10.11978/2022106 http://www.jto.ac.cn/EN/10.11978/2022070 http://www.jto.ac.cn/EN/10.11978/2022055 http://www.jto.ac.cn/EN/10.11978/2022061 http://www.jto.ac.cn/EN/10.11978/2022019 20μm), nano- (2~20μm), and pico- (<2μm) phytoplankton depending on particle size. Different phytoplankton size classes contribute differently to primary production (PPsize) and thus play different roles in the oceanic circulation of matter or energy and ocean carbon cycle. Based on the bio-optical dataset collected at 12 stations in the western South China Sea in 2019, this study presented the spatial variability of size-fractionated primary production and chlorophyll a concentration of phytoplankton and their percentage contribution. The size-fractionated primary productivity of phytoplankton was well estimated from the product of size-fractionated phytoplankton absorption coefficient at 670nm (aph-size(670)) and photosynthetically active radiation (PAR) (aph-size(670)?PAR). The coefficients of determination R2 between log(aph-size(670)?PAR) and log(PPsize) were 0.64, 0.76, and 0.67 for the micro-, nano-, and pico-phytoplankton dataset, respectively. The cross-validation of the algorithm based on the size-fractionated phytoplankton absorption coefficient and PAR has shown a good generalization performance. This algorithm could better predict the size-fractionated primary productivity compared to the size-fractionated phytoplankton absorption coefficient as the only input. This result indicates that PAR is one of the important factors to estimate the size-fractionated primary productivity. Meanwhile, the performance of the chlorophyll a concentration-based algorithm for estimating primary productivity at each size was closer to that of the algorithm constructed in this paper for both micro- and pico- phytoplankton dataset, but significantly lower for the nano-phytoplankton, probably due to the weak correlation between the absorption coefficients and chlorophyll a concentration of nano-phytoplankton.]]> http://www.jto.ac.cn/EN/10.11978/2022067 http://www.jto.ac.cn/EN/10.11978/2022011 http://www.jto.ac.cn/EN/10.11978/2022027 http://www.jto.ac.cn/EN/10.11978/2022098 http://www.jto.ac.cn/EN/10.11978/2022074 http://www.jto.ac.cn/EN/10.11978/2022079 http://www.jto.ac.cn/EN/10.11978/2022065 http://www.jto.ac.cn/EN/10.11978/2022057 http://www.jto.ac.cn/EN/10.11978/2022043 http://www.jto.ac.cn/EN/10.11978/2022023 http://www.jto.ac.cn/EN/10.11978/2022047 http://www.jto.ac.cn/EN/10.11978/2022017 http://www.jto.ac.cn/EN/10.11978/2022032 http://www.jto.ac.cn/EN/10.11978/2022038 http://www.jto.ac.cn/EN/10.11978/2021183 http://www.jto.ac.cn/EN/10.11978/2022030 http://www.jto.ac.cn/EN/10.11978/2022016 http://www.jto.ac.cn/EN/10.11978/2021163 http://www.jto.ac.cn/EN/10.11978/2022029 http://www.jto.ac.cn/EN/10.11978/2021189 http://www.jto.ac.cn/EN/10.11978/2021184 http://www.jto.ac.cn/EN/10.11978/2022037 http://www.jto.ac.cn/EN/10.11978/2022013 3μm, and settling algae cells). Results showed that the phycosphere bacterial communities between the two lifestyle algal strains were significantly different. The bacterial species richness in anchorage-dependent living strains was significantly higher than that in free-living strains. Seven bacterial genera were found to be present in all the algal strains, representing the core bacterial communities of zooxanthellae. Comparing the core bacterial communities in three particle size samples, it was found that the core bacterial communities in >3μm samples and 0.2-3μm samples were very similar, but were significantly different from the “settling” samples. ]]> http://www.jto.ac.cn/EN/10.11978/2022021 http://www.jto.ac.cn/EN/10.11978/2022015 http://www.jto.ac.cn/EN/10.11978/2022007 http://www.jto.ac.cn/EN/10.11978/2021158 http://www.jto.ac.cn/EN/10.11978/2022009 http://www.jto.ac.cn/EN/10.11978/2021190 http://www.jto.ac.cn/EN/10.11978/2021176 http://www.jto.ac.cn/EN/10.11978/2021186 http://www.jto.ac.cn/EN/10.11978/2022008 http://www.jto.ac.cn/EN/10.11978/2022022 http://www.jto.ac.cn/EN/10.11978/2021145 http://www.jto.ac.cn/EN/10.11978/2021185 http://www.jto.ac.cn/EN/10.11978/2021178 http://www.jto.ac.cn/EN/10.11978/2021165 http://www.jto.ac.cn/EN/10.11978/2021162 http://www.jto.ac.cn/EN/10.11978/2021160 http://www.jto.ac.cn/EN/10.11978/2021095 http://www.jto.ac.cn/EN/10.11978/2021143 http://www.jto.ac.cn/EN/10.11978/2021159 http://www.jto.ac.cn/EN/10.11978/2021121 http://www.jto.ac.cn/EN/10.11978/2021132 http://www.jto.ac.cn/EN/10.11978/2021127 http://www.jto.ac.cn/EN/10.11978/2021155 http://www.jto.ac.cn/EN/10.11978/2021140 http://www.jto.ac.cn/EN/10.11978/2021168 http://www.jto.ac.cn/EN/10.11978/2021111  It was investigated for the spatiotemporal variation of the water quality in the mangroves in Guangdong Province. Surface water samples were collected inside the mangroves from 30 sampling sites during the dry season (Oct., 2017 to Jan., 2018) and 20 sites during the wet season (July to Aug., 2018). Water quality and trophic conditions were highlighted by the single trophic state index (TSI Chl a), and the evaluation standard was: 0 < TSI ≤ 30 oligotrophic, 30 < TSI ≤ 50 mesotrophic, TSI > 50 eutrophic, and > 70 high eutrophic. The spatiotemporall variations of the environmental variables were as follows: salinity (2.15‰⁓27.14‰), pH (6.18⁓ 8.65), electrical conductivity (10.87⁓90.52µs.cm-¹), turbidity (5.6⁓272FTU), nitrate (0 ⁓127.2mg.L^-¹), nitrite (0⁓12.0mg.L^-¹), phosphate (0⁓34.5 mg.L^-¹), silicate (1.22 ⁓2.88 mg.L^-¹) and Chlorophyll a (0.19 ⁓ 38.08 mg. m^-3). Cluster analysis deduced that the water quality across the right side of the Leizhou Peninsula to the east part of the Guangdong coast during the wet season was relatively better, while the left side experienced mesotrophic conditions. Meanwhile the water quality decreased in the dry season, ranging from high mesotrophic conditions around the Leizhou Peninsula to eutrophic conditions across the east part of the coast. The PCA revealed that nutrient salts, salinity, pH, EC and turbidity contributed significantly to the water quality status in the mangrove ecosystems, which in turn affects the algal communities in the ecosystem.]]> http://www.jto.ac.cn/EN/10.11978/2021107 http://www.jto.ac.cn/EN/10.11978/2021114 http://www.jto.ac.cn/EN/10.11978/2021064 http://www.jto.ac.cn/EN/10.11978/2021078 http://www.jto.ac.cn/EN/10,11978/2021003