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Connectivity of fish assemblages along the mangrove-seagrasscoral reef continuum in Wenchang, China

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Acta Oceanologica Sinica 2020年第8期39卷 43-52页

作者： Jianguo Du Meiling Xie yuyu wang Zehao Chen Wenhua Liu Jianji Liao Bin Chen Third Institute of Oceanography Ministry of Natural ResourcesXiamen 361005China Marine Biology Institute Shantou UniversityShantou 515063China School of Ecology and Nature Conservation Beijing Forestry UniversityBeijing 100083China College of Ocean and Earth Sciences Xiamen UniversityXiamen 361005China

Understanding the connectivity of fish among different typical habitats is important for conducting ecosystembased management, particularly when designing marine protected areas(MPA) or setting MPA networks. To clarify of connectivity among mangrove, seagrass beds, and coral reef habitats in Wenchang, Hainan Province,China, the fish community structure was studied in wet and dry seasons of 2018. Gill nets were placed across the three habitat types, and the number of species, individuals, and body size of individual fish were recorded. In total, 3 815 individuals belonging to 154 species of 57 families were collected. The highest number of individuals and species was documented in mangroves(117 species, 2 623 individuals), followed by coral reefs(61 species,438 individuals) and seagrass beds(46 species, 754 individuals). The similarity tests revealed highly significant differences among the three habitats. Approximately 23.4% species used two habitats and 11.0% species used three habitats. A significant difference(p<0.05) in habitat use among eight species(Mugil cephalus, Gerres oblongus, Siganus fuscescens, Terapon jarbua, Sillago maculata, Upeneus tragula, Lutjanus russellii, and Monacanthus chinensis) was detected, with a clear ontogenetic shift in habitat use from mangrove or seagrass beds to coral reefs. The similarity indices suggested that fish assemblages can be divided into three large groups namely coral, seagrass, and mangrove habitat types. This study demonstrated that connectivity exists between mangrove–seagrass–coral reef continuum in Wenchang area;therefore, we recommend that fish connectivity should be considered when designing MPAs or MPA network where possible.

关键词： connectivity fish mangrove seagrass coral reef Wenchang northern South China Sea

A highly sensitive fluorescent probe for tracking intracellular zinc ions and direct imaging of prostatic tissue in mice

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Chinese Chemical Letters 2020年第11期31卷 2933-2936页

作者： yuyu wang Houna Duan Hongyuan Shi Shiwei Zhang Yufang Xu Weiping Zhu Xuhong Qian State Key Laboratory of Bioreactor Engineering Shanghai Key Laboratory of Chemical BiologySchool of PharmacyEast China University of Science and TechnologyShanghai 200237China Department of Radiology Jiangsu Province HospitalFirst Affiliated Hospital of Nanjing Medical UniversityNanjing 210029China

A highly sensitive fluorescent sensor ZnDN was designed,synthesized and used for tracking intracellular zinc ions in various living cells and direct imaging of prostatic tissue in *** was prepared from the heterocyclic-fused naphthalimide fluorophore,and the zinc receptor,N,N-bis(2-pyridylmethyl)ethylenediamine(BPEN).Upon addition of Zn2+to the solutions of ZnDN,a remarkable fluorescence enhancement was observed,which could be attributed to the photo-induced electron transfer(PET)*** ZnDN exhibited high sensitivity toward Zn2+in phosphate buffer solution,with a limit of detection of 4.0 x 10-9 mol/L,it was further applied for the imaging of exogenous and endogenous Zn21 in different living *** cells imaging experiments suggested that ZnDN could image the changes of intracellular free zinc ions,and could be used for two-photon ***,flow cytometry suggested that ZnDN could distinguish cancerous prostate cells from normal *** experiments indicated that ZnDN had the potential in imaging prostate tissue in vivo.

关键词： Fluorescent probe Zinc ion Prostate cells Naphthalimide In vivo imaging

Potential influence of water level changes on energy flows in a lake food web

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Chinese Science Bulletin 2011年第26期56卷 2794-2802页

作者： wang yuyu YU XiuBo LI WenHua XU Jun CHEN YuWei FAN Na Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Donghu Experimental Station of Lake Ecosystems State Key Laboratory of Freshwater Ecology and Biotechnology of China Institute of Hydro- biology Chinese Academy of Sciences Wuhan 430072 China Institute of Ecology Lund University Ecology Building SE-223 62 Lund Sweden Nanjing Institute of Geography and Limnology Chinese Academy of Sciences Nanjing 210008 China

Large seasonal water-level fluctuations may influence isotopic signatures of primary producers and the types and amounts of these potential food sources accessible to aquatic fauna of Poyang Lake,the largest freshwater lake in *** this study,the isotopic signatures of primary producers and consumers were determined,stable carbon and nitrogen isotope analysis and mixing models were combined to investigate the influence of water levels on the diet and isotopic composition of Poyang Lake fish and *** potential food sources (seston,benthic organic matter,aquatic macrophytes,attached algae,and terrestrial plants),4 species of invertebrates,and 10 species of fish were collected from the lake area during dry and wet seasons between January 2009 and April *** δ 13C values of invertebrates and most fish were within the range of δ 13C values of the potential food sources for both *** δ 13C values of invertebrates and most fish were lower in the dry season than in the wet season,whereas the δ 15N values exhibited different patterns for different *** models indicated that the most important food sources for common lake fauna were seston in the dry season and aquatic macrophytes and terrestrial plants in the wet *** fauna were more omnivorous in the wet season than in the dry *** food web dynamics of Poyang Lake are strongly influenced by changes in the abundance and accessibility of different basal food sources that occur because of seasonal flood *** trophic links within the aquatic communities of Poyang Lake are modified by water-level fluctuations.

关键词：水位变化食物网无脊椎动物食物来源同位素特征流量能量水生动物

P53 and DNA Methylation in the Aging Process

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Journal of Behavioral and Brain Science 2021年第4期11卷 83-95页

作者： yuyu wang Jingshan Shi Department of Pharmacology and the Key Laboratory of Basic Pharmacology of Ministry of Education Zunyi Medical University Zunyi China

Healthy aging is the ultimate goal of all life science research and the most ideal state of a human being. There are many factors that affect aging, including genetic background, the environment, mental state and living habits and so on, which affect the body’s internal environment and its steady state. The ultimate starting point of the body’s aging all comes down to cellular aging. At the cellular level, aging is an irreversible block in the cell cycle, and the P53 gene plays a pivotal role in regulating the cell cycle. Aging is not only regulated by genes but also influenced by epigenetics affecting gene expression. DNA methylation, a novel biomarker of aging, plays a major role in epigenetics. This paper’s mini-review briefly summarizes P53 and DNA methylation in aging.

关键词： Aging P53 DNA Methylation

A Stable Isotope Approach to Determine Herbivorous Diets of Wintering Geese at Dongting Lake,China

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湿地科学 2016年第3期14卷 337-346页

作者： GUAN Lei MAZUMDER Debashish YANG Xiaoxue WEN Li wang yuyu LEI Jialin LEI Guangchun School of Nature Conservation Beifing Forestry UniversityBeifing 100083P.R.China Australian Nuclear Science and Technology Organisation Locked Bag 2001Kirrawee D CNSW 2232Australia Science Division Office of Environment and HeritageDepartment of Premier and CabinetSydneyNew South WalesAustralia

The East Dongting Lake National Nature Reserve in China is listed as a Ramsar Wetlands due to its global significance for migratory waterbird conservation, especially for the geese. For example, more than 90% of East Asian population of the vulnerable Lesser White-fronted Goose(Anser erythropus), and large numbers of Bean Goose(Anser fabilis) and Greater White-fronted Goose(Anser albifrons) over winter here every year from October to the next March. However, the habitats and food quality of the wintering geese have been threatened by hydrological alternation due to the operation of the Three Gorges Dam. Understanding the diets of these geese is fundamental for their conservation. We used the stable isotopic ratios of the body tissues of three predominant goose species(i.e. Ans?er erythropus, Anser fabilis and Anser albifrons) and their potential diet items(6 grass species), and applied smooth transition autoregressive(SIAR) mixing models to quantify the contribution of different food items to their diets. The results showed that the δ13C values of the blood samples were significantly different from those of feather, and the difference was consistent for the three kinds of geese. These results indicated that clear dietary shifts from their breeding place at the Arctic to the wintering place at Dongting Lake. The δ13C values of the blood samples of the geese showed there were no significant difference(ANOVA, p=0.265) suggesting that they share the same food sources at Dongting Lake. Moreover, the multiple-source mixing models(i.e. SIAR model) indicated that no single plant had a contribution greater than 35% to the diet of geese at 0.95 confident levels(0.50 and 0.95 credibility intervals of the posterior distributions range from 0.24-0.25 and 0.32-0.34, respectively). The results indicated that the geese had no preference for a particular plant. The findings suggested that the features at patch level(e.g. vegetation greenness and development stage) but not plant spec

关键词： stable isotope food resources geese Dongting Lake

Habitat selection and food choice of White-naped Cranes(Grus vipio)at stopover sites based on satellite tracking and stable isotope analysis

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Avian Research 2022年第4期13卷 468-476页

作者： Yunzhu Liu Lan Wu Jia Guo Shengwu Jiao Sicheng Ren Cai Lu yuyu wang Yifei Jia Guangchun Lei Li Wen Liying Su Centre for East Asian-Australasian Flyway Studies Beijing Forestry UniversityBeijing100083China School of Ecology and Nature Conservation Beijing Forestry UniversityBeijing100083China Research Institute of Subtropical Forestry Chinese Academy of ForestryWetland Ecosystem Research Station of Hangzhou BayHangzhou311400China Science Economics and Insights DivisionNSW Department of PlanningIndustry and EnvironmentSydney2150Australia Department of Earth and Environmental Sciences Macquarie UniversitySydney2109Australia International Crane Foundation BarabooWI53913USA

By combining satellite tracking,land-cover extracted from Landsite 8 images,and the traditional stable isotope analysis,we studied the habitat selection and food preference of a vulnerable migratory waterbird,the Whitenaped Crane(Grus vipio),in one of its key stagging sites,the Shandian River Basin in the semi-arid northern China,to provide knowledge that is critical for its conservation in the *** results showed that the White-naped Cranes used both uplands and natural wetlands in the stopover *** the cranes used farmland and natural land cover equally as night-time roosting grounds,they spent most daytime foraging at *** the extensive usage of croplands as their foraging ground,the Bayesian mixing models based on stable isotopic analysis revealed that crop residues after harvesting,such as Maize(Zea mays)and Naked Oat(Avena chinensis),were only a small fraction of the White-naped Cranes’diet(~19%),and their diet composited mainly natural plants,such as Allium ledebourianum,Potentilla anserina,and ***,more than 20%of the total wetlands in the region were modelled as home range of the *** contrast,less than 10%of croplands and about 1%of the unused uplands were identified as home *** addition,the entire core habitats were located in natural *** findings demonstrated the importance of natural wetlands for the survival of the threatened ***,the satellite-derived land cover data showed that croplands increased rapidly in the last decade in this area,at the expense of natural *** the sharp decrease of White-naped Crane population in China,the conservation of stopover sites becomes *** on our analysis,we recommend the following management actions:conserving adequate natural wetland area,regulating anthropogenic pressures such as the use of herbicides,expanding the duration and extent of current conservation regulations,establishing a comprehensive monitoring progr

关键词： Biased random bridge Food resource Stopover Utilization distribution White-naped Crane

Examining Health of Wetlands with Multiple Ecosystem Services as Targets in China’s Coastal Regions

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Chinese Geographical Science 2020年第4期30卷 600-613页

作者： ZHOU Yangming DOU Yuehan YU Xiubo ZHANG Li HUANG Chong wang yuyu LI Xiaowei LI He JIA Yifei BAKKER Martha CARSJENS Gerrit Jan ZHOU Yan DUAN Houlang School of Geography and Environment Jiangxi Normal UniversityNanchang 330022China Land Use Planning Group Wageningen University and ResearchWageningen 6700HBthe Netherlands Key Laboratory of Ecosystem Network Observation and Modelling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100190China Key Laboratory for Biodiversity Science and Ecological Engineering Ministry of EducationCollege of Life SciencesBeijing Normal UniversityBeijing 100875China State Key Laboratory of Resources and Environment Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China School of Nature Conservation Beijing Forestry UniversityBeijing 100083China Key Laboratory of Coastal Environmental Processes and Ecological Remediation Yantai Institute of Coastal Zone ResearchChinese Academy of SciencesYantai Shandong 264003China College of Biology and Environment Nanjing Forestry UniversityNanjing 210037China

Coastal zones are key interconnectors of terrestrial and marine *** to the degradation and fragmentation of coastal wetlands,there is an urgent need to develop assessment methodology to compare the health of wetland ecosystems at different spatial *** will help efficiently develop and implement protections using easy-to-access ecosystem health *** study aims to understand the spatial distribution of coastal and inland wetland health for China’s coastal regions.A Wetland Health Index(WHI)was developed to provide a basis for policy and decision *** utilization models—Long Term Model,Open Model,Nature Reserve Model,and Protected and Economic Model—were defined in the context of China’s coastal regions to specifically examine wetland *** show that the average WHI score was 63.6 with the range of 44.8–84.3 for 35 National Nature Reserves(NNRs),and the southern NNRs generally performed better than the northern *** wetlands in the southern provinces/municipalities are relatively healthier than their northern *** competent authority has slight influence on WHI scores but duration of conservation establishment does not show a clear *** increasing economic activity,the differences in health conditions(WHI scores)of China’s coastal regions also *** Domestic Product(GDP)or economic intensification does not relate to WHI *** trade-offs between wetland management and economic development could contribute to improve health conditions,conservation and utilization of coastal and inland wetlands.

关键词： Wetland Health Index(WHI) ecosystem services wetland utilization coastal zones

Homotopy type of smooth weighted complete intersections

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Science China Mathematics 2010年第6期53卷 1583-1594页

作者： wang JianBo1,& wang yuyu2 1Department of Mathematics,Tianjin University,Tianjin 300072,China 2College of Mathematical Science,Tianjin Normal University,Tianjin 300387,China 1. Department of Mathematics Tianjin University Tianjin 300072 China2. College of Mathematical Science Tianjin Normal University Tianjin 300387 China

If the total degree d has no prime divisors less than(n+3)/2,then we prove that the homotopy type of complex odd dimensional smooth weighted complete intersection Xn(d;w) is determined by the dimension n,the total degree d,the Euler characteristic and the Kervaire invariant,provided that the weights w =(ω0,...,ωn+r) is pairwise relatively prime.

关键词： weighted projective space weighted complete intersection homotopy type connected sum

Observation of plasma dynamics in a theta pinch by a novel method

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Matter and Radiation at Extremes 2023年第4期8卷 28-36页

作者： Zhao wang Rui Cheng Guodong wang Xuejian Jin Yong Tang Yanhong Chen Zexian Zhou Lulin Shi yuyu wang Yu Lei Xiaoxia Wu Jie Yang Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516003China College of Physics and Electronic Engineering Northwest Normal UniversityLanzhou 730070China

A novel experimental method is proposed for observing plasma dynamics subjected to magnetic fields based on a newly developed cylindrical theta-pinch *** measuring simultaneously the temporal profiles of multiple parameters including the drive current,luminosity,plasma density,and plasma temperature,it provides a basis for observing the plasma dynamics of the theta pinch,such as shock transport and magnetohydrodynamic *** show that the plasma evolution can be distinguished as three ***,in the radial implosion phase,the trajectories of the current sheath and shock wave are ascertained by combining experimental data with a snowplow model(Lee model)in a self-consistent ***,in the axial flow phase,we demonstrate that m=0(sausage)instability associated with the plasma axial flow suppresses the plasma ***,in the newly observed anomalous heating phase,the lower-hybrid-drift instability may develop near the current sheath,which induces anomalous resistivity and enhanced plasma *** present experimental data and novel method offer better understanding of plasma dynamics in the presence of magnetic fields,thereby providing important support for relevant research in magneto-inertial fusion.

关键词： dynamics thereby cylindrical