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| 1 | Latitudinal changes (6°S-20°N) of summer ciliate abundance and species compositions in surface waters from the Java Sea to the South China Sea显示文摘Ciliates play a curial role in energy transfer from pico-and nano-phytoplankton to mesozooplankton in marine ecosystems. In order to visualize their geographical distributions from the Java Sea to the South China Sea (6°S to 20°N), the authors investigated the ciliate abundance and species composition in surface waters during May 18 to 27 of 2010. The ciliate abundance decreased latitudinally from 3 080 ind./L (~6°S) to 40 ind./L (~3°N), and then increased to 1 180 ind./L (~16°N) at the end of the survey. A total of 22 ciliates belonging to 15 genera were identified with the tintinnids accounted for 50% (11 species); and the species number showed a same spatial change as the ciliate abundance. Moreover, the Strombidium occupied over 50% of total ciliate abundance in most stations and Mesodinium and Tintinnopsis contributed to about 18.7% and 11.4%, respectively. In particular, our results indicate that the geographical changes in ciliate abundance were positively regulated by larger nano-and micro-phytoplankton biomass, rather than smaller pico-phytoplankton in the investigated waters. | LIU Huaxue LI Gang TAN Yehui KE Zhixin HUANG Jianrong HUANG Liangmin | 2013 | Acta Oceanologica Sinica2013，32，4： | 6 |
| 2 | Relationship between phytoplankton composition and environmental factors in the surface waters of southern South China Sea in early summer of 2009显示文摘Horizontal distributions of phytoplankton abundance,species composition as well as environmental factors were investigated in the surface waters of southern South China Sea(SCS) in early summer(May 16 to June 7) of 2009.In most areas of southern SCS,the concentrations of nitrogen and phosphorus were very low and DIN/DIP ratios usually were lower than the Redfield N/P Ratio of 16:1.Nitrogen nutrients were significant lower in the upwelling region off Vietnam.A total of 144 taxa of phytoplankton were identified in the study area.The dominant genera were Prorocentrum,Gonyaulax,Gyrodinium,Scrippsiella and Chaetoceros,respectively.Spatial patterns of early-summer phytoplankton abundance and species composition should be mainly controlled by the upwelling off Vietnam and the discharge of Mekong River in the southern SCS.Diatoms dominated in the nutritious Mekong River Estuary or upwelling region off Vietnam;while dinoflagellates dominated in the oligotrophic pelagic region.The canonical correspondence analysis(CCA) indicates that most of diatoms favor higher levels of silicate and phosphorus,as well as lower temperature;while most of dinoflagellates favor the lower silicate and phosphorous and higher temperature.Correlation and CCA results indicate that silicate,nitrate and temperature were the most relevant environmental factors to regulate the horizontal pattern of early-summer phytoplankton in the surface waters of southern SCS. | KE Zhixin TAN Yehui HUANG Liangmin ZHANG Jianlin LIAN Shumin | 2012 | Acta Oceanologica Sinica2012，31，3： | 3 |
| 3 | Longitudinal patterns of spring-intermonsoon phytoplankton biomass,species compositions and size structure in the Bay of Bengal显示文摘Vertical distributions of phytoplankton biomass,compositions and size structure were investigated during the spring-intermonsoon (April 22 to 30) of 2010 along transact 10 N of the Bay of Bengal,northern Indian Ocean.Surface phytoplankton biomass (Chl a) was (0.065 ± 0.009) μg/L,being greater than 80% of which was contributed by pico-phytoplankton (<3 μm).The Chl a concentration vertically increased to the maximal values at deep chlorophyll maximum (DCM) layer that shoaled eastwards from 75 to 40 m.The Chl a biomass at DCM layer generally varied between 0.2 and 0.4 μg/L,reaching the maximum of 0.56 μg/L with micro-phytoplankton cells (>20 μm) accounting for 58% and nano-(3-20 μm) or pico-cells for 15% and 27%,respectively.In particular,the cells concentration coupling well with phosphate level was observed at middle layer (75-100 m) of 87 to 89 E,dominated by micro-cells diatoms (e.g.,Chaetoceros atlanticus v.neapolitana,Chaetoceros femur and Pseudonitzschia sp.) and cyanobacteria (i.e.,Trichodesmium hildebrandtii),with the cells concentration reached as high as 4.0 × 10 4 and 4.3 × 10 4 cells/L.At the rest of the transact however,dinoflagellates (e.g.,Amphisdinium carterae and Prorocentrum sp.) were the dominant species,with the cells concentration varying from 0.3 × 10 3 to 6.8 × 10 3 cells/L.Our results also indicate that the regulation of large cells (micro-,nano-) on phytoplankton biomass merely occurred at DCM layer of the Bay. | LI Gang KE Zhixin LIN Qiang NI Guangyan SHEN Pingping LIU Huaxue YIN Jianqiang LI Kaizhi HUANG Liangmin TAN Yehui | 2012 | Acta Oceanologica Sinica2012，31，2： | 2 |
| 4 | Distribution of reactive aluminum under the influence of mesoscale eddies in the western South China Sea显示文摘To understand the distribution of aluminum(Al) under the influence of mesocale eddies in the western South China Sea(SCS), sea level anomaly, geostrophic current, environmental parameters and reactive Al were investigated in the western SCS in August 2013. The highest reactive Al concentration((180±64) nmol/L) was observed in the surface waters, indicating a substantial atmospheric input. Vertically, the reactive Al decreased from the surface high concentration to the subsurface minima at the depth of chlorophyll a(Chl a) maxima and then increased again with depth at most of the stations. The average concentration of reactive Al in the upper 100 m water column was significantly lower in the cyclonic eddy((137±6) nmol/L) as compared with that in the noneddy waters((180±21) nmol/L). By contrast, the average concentrations of Chl a and silicate in the upper 100 m water column were higher in the cyclonic eddy and lower in the anticyclonic eddy. There was a significant negative correlation between the average concentrations of reactive Al and Chl a in the upper 100 m water column. The vertical distribution of reactive Al and the negative correlation between reactive Al and Chl a both suggest that the reactive Al in the upper water column was significantly influenced by biological removal processes. Our results indicate that mesoscale eddies could regulate the distribution of reactive Al by influencing the primary production and phytoplankton community structure in the western SCS. | LIU Jiaxing ZHOU Linbin TAN Yehui WANG Qionga HU Zifeng LI Jiajun JIANG Xin KE Zhixin | 2017 | Acta Oceanologica Sinica2017，36，6： | 1 |
| 5 | In situ study on th econtrol of toxic Microcystis blooms using phytop lank tivorous fish in the sub tropical Lake Taihu of China:A large fish fenexperiment 显示文摘 | Zhixin Ke Ping Xie Longgen Guo etal | 2007 | Aquaculture2007，，265： | 1 |
| 6 | Effects of daily nitrogen and phosphorus input on planktonic community metabolism in a semi-enclosed bay by mesocosm experiment显示文摘Planktonic metabolism plays an important role in affecting the energy transportation and carbon cycle of the marine ecosystem.However,its regulation mechanism remains unclear under the continuously exogenous nutrient inputs in nearshore waters.In this study,a mesocosm experiment was conducted in a semi-enclosed bay,the Daya Bay,to explore the responses of plankton metabolic balance and community structure to a concentration gradient of daily nitrogen and phosphorus inputs.The results showed that nutrient enrichments promoted phytoplankton biomass,total primary production,and community respiration,and the promoting effect enhanced alongwith the increase of nutrient concentration.However,the net community production fluctuated more violently between autotrophic and heterotrophic with the increase of nutrient inputs and tended to be more heterotrophic from the 5 th day to the 10 th day of the experiment.In addition,the daily flux of nitrogen and phosphorus,2μmol/(L·d)and 0.066μmol/(L·d),respectively,could be regarded as a potential threshold for ecosystem stability and health,since most of the ecological characteristics related to plankton structure and function have undergone significant changes when the nutrient level is higher than that.In the nearshore enclosed or semi-enclosed waters,nutrient from continuous terrigenous input is likely to be concentrated and exceed this level,indicating the ecological risks due to the metabolic unbalance and the deterioration of plankton community structure. | Chenhui Xiang Yao Li Zhixin Ke Gang Li Yadong Huang Xinying Su Liangmin Huang Xinyu Song | 2022 | Acta Oceanologica Sinica2022，41，8： | 1 |
| 7 | In situ study on the control of toxic Microcystis blooms using phytoplanktivorous fish in the subtropical Lake Taihu of China: A large fish fen experiment 显示文摘 | Zhixin Ke Ping Xie Longgen Guo | 2007 | Aquaculture2007，，265： | 1 |
| 8 | In situ study on the control of toxic Microcystis blooms using phytoplanktivorous fish in the subtropical Lake Taihu of China: A large fish pen experiment显示文摘 | Zhixin Ke Ping Xie Longgen Guo Yaqin Liu Hua Yang | 2007 | Aquaculture2007，，1： | 1 |
| 9 | In situ studies on physiological and biochemical responses of four fishes with different trophic levels to toxic cyanobacterial blooms in a large Chinese lake显示文摘 | Tong Qiu Ping Xie Zhixin Ke Li Li Longgen Guo | 2007 | Toxicon2007，，3： | 1 |
| 10 | In situ studies on the bioaccumulation of microcystins in the phytoplanktivorous silver carp ( Hypophthalmichthys molitrix ) stocked in Lake Taihu with dense toxic Microcystis blooms显示文摘 | Jun Chen Ping Xie Dawen Zhang Zhixin Ke Hua Yang | 2006 | Aquaculture2006，，3： | 1 |
| 11 | Investigation on environment monitoring system for a combination of hydroponics and aquaculture in greenhouse显示文摘This work develops a distributed environmental monitoring system for the combination of hydroponics and aquaculture based on the internet of things technology,which mainly includes the information perception layer,the information transmission layer and the sys-tem architecture.The system has employed multiple sensors terminal to real-time acqui-sition,including air and water temperatures,dissolved oxygen etc.LoRa protocol is suitable for sending small data and the 4G was employed to collect data and send to the cloud plat-form.Java is used to develop background applications,to access cloud platforms and local data processing.Based on the collection and processing of environmental data and cloud service platform,the mobile application program client and remote login desktop have been developed.It has been implemented and tested in Tongzhou,Beijing for 3 months in 2020.The results showed the proposed monitoring system stability for overall operation and accuracy data transmission,which can support the actual hydroponics and aquacul-ture production management.After analysis of monitoring data collected from the devel-oped monitoring system,indoor air and water temperature have the obvious correlation with atmospheric pressure(0.7 and 0.9)and outdoor temperature(1.0 and 0.9),respectively. | Shanhong Zhang Yu Guo Shuai Li Zhixin Ke Huajian Zhao Jinqi Yang Yang Wang Daoliang Li Liang Wang Wenhua Yang Zhili Zhang | 2022 | Information Processing in Agriculture2022，9，1： | 0 |
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