海南岛海水鱼类单殖吸虫研究Ⅳ.海盘虫属两新种

对1996年4月采自海南岛万宁之美蝴蝶鱼 Chaetodon wiebeli Kaup 鳃上的海盘虫进行鉴定,发现两新种:(1)海南海盘虫,新种 Haliotrema hainanensis Pan & Zhang,sp.nov.,以其腹中央大钩和支持器结构的不同而区别于 H.annulocirrus Yamaguti,1968;(2)单孔海盘虫,新种 Haliotrema monoporosum Pan & Zhang,sp.nov.,以其腹联结片的结构和交接管长度的差异而不同于 H.canescens Yamaguti,1968.     

Evaluation of NSCAT-2 Wind Vectors by Using Statistical Distributions of Wind Speeds and Directions

In order to validate wind vectors derived from the NASA scatterometer (NSCAT), statistical distributions of wind speeds and directions retrieved by the NSCAT-2 geophysical model function have been investigated by comparison with wind data retrieved by the other model functions such as SASS-2 and NSCAT-1 and those derived from the wind analyses of the European Centre for Medium Range Weather Forecasts (ECMWF). The histogram of the NSCAT-2 wind speeds has a similar shape to those of the ECMWF and NSCAT-1 winds, but is slightly shifted toward higher wind speed to adjust negative bias which has been found in the NSCAT-1 winds by previous buoy comparison studies. Variations of the standard deviation of the NSCAT-2 wind speeds with incidence angle are greater than those of the ECMWF and NSCAT-1 winds. The frequency distribution of wind directions relative to spacecraft flight direction has been calculated to assess the self-consistency of the wind directions. It was found that the NSCAT-2 wind vectors exhibit systematic directional preference relative to antenna beams. This artificial directivity is considered to be caused by imperfections in the antenna beam balancing and the geophysical model function. The skill of the ambiguity removal procedure is discussed as a function of wind speed and incidence angle, and is found to be improved compared to the NSCAT-1 winds, especially at high incidence angles. It is concluded that systematic errors in wind directions might be increased by modifications from NSCAT-1 to NSCAT-2, though the wind speed bias is removed and the ambiguity removal skill is improved.     

Total lipid and fatty acid composition of eight strains of marine diatoms

Fatty acid composition and total lipid content of 8 strains of marine diatoms (Nitzschia frustrula, Nitzschia closterium, Nitzschia incerta, Navicula pelliculosa, Phaeodactylum tricornutum, Synedra fragilaroides) were examined. The microalgae were grown under defined conditions and harvested at the late exponential phase. The major fatty acids in most strains were 14∶0 (1.0%–6.3%), 16∶0 (13.5–26.4%), 16∶1n−7 (21.1%–46.3%) and 20∶5n−3 (6.5%–19.5%). The polyunsaturated fatty acids 16∶2n−4, 16∶3n−4, 16∶4n−1 and 20∶4n−6 also comprised a significant proportion of the total fatty acids in some strains. The characteristic fatty acid composition of diatoms is readily distinguishable from those of other microalgal groups. Significant concentration of the polyunsaturated fatty acid 20∶5n−3 (eicosapentaenoic acid) was present in each strain, with the highest proportion in B222 (19.5%). Project supported by the Hi-Tech “863” Programs of the China Ministry of Science and Technology (863-819-02-01).     

MARINE HAZARDS IN COASTAL AREAS AND HUMAN ACTION AGAINST THEM-A CASE STUDY OF THE CHANGJIANG RIVER ESTUARIES AND QIANTANG RIVER

INTRODUCTIONMarinehedsresultinginenomouslossestousuallyPOpulousandeconondcallyde-veloPedlowandcoastalandestUdrineregi0nsareforngseriousattenti0n.msarticlediscussesP0ssiblepreventivemeasaresagainstInariflehazaIdsbasedonacasestUdyoftheestUedesoftheChanaiiangffiverandQiantanffiver-ThesetwoareasoftheChanaiiangDeltaareboicalofc0astalregionsfreqUenilysufferingfromdrinehazanls,andarethemostsociallyandeconondcallydeveloPedregionsinChina.Theirinhabitantshaveahist0-ryofmorethanathouSandyeare0…     

COMPARATIVE STUDIES OF INORGANIC CARBON UTILIZATION IN EMILIANIA HUXLEYI AND SOME NON-CALCIFYING MARINE MICROALGAE

INTRODUCTIONMarinemicroalgaeacquiretheirinorganiccarbonforphotosynthesisfromseawaterwhereinorganiccarbonmaybepresentasfreeCO2 ,H2 CO3andHCO-3 andCO2 -3 .TheproportionsofdifferentDICformsareprimarilyrelatedtopH ,andtotemperatureandsalinitytoalessextent.ThetotalDICisashighas2mmol Linseawa terbutthisismainlyintheformofHCO-3 .InnormalpHrangeof7.8-8.2inseawater,HCO-3 accountsfororethan 90 %ofthetotalDIC,whilefreeCO2 islessthan1 % .TheequilibriumconcentrationoffreeCO2 isonly1 2 μm…     

Marine hazards in coastal areas and human action against them—A case study of the Changjiang River estuaries and Qiantang River

China's eastern coastal area marine hazards (storm surge, erosion and deposition by tidal currents and seawater intrusion) and the history, present situation, experiences and problems of inhabitants in their fight against marine hazards are discussed in this paper, which also suggests counter-measures against, and scientific and rational management of, coastal area marine hazards in order to protect the coastal and estuarine ecosystems.     

一些海洋动植物区系的真菌分离和抑菌活性初步研究

从南海海域的鱼类、贝类、海藻以及海泥样品中分离出199株海洋真菌,分属于青霉属、曲霉属和酵母属等9个属,其中以青霉属和曲霉属真菌居多,分别占28.6%和26.8%。以大肠杆菌和金黄色葡萄球菌作为指示菌,筛选出抑菌活性菌株7株,其中2株既抗大肠杆菌又抗金黄色葡萄球菌,4株抗金黄色葡萄球菌,1株抗大肠杆菌。     

三种数学模型在海洋经济预测中的应用

根据可得的海洋经济统计数据,采用三种数学模型对2007年至2010年中国主要海洋产业的产值进行了预测,通过对历史数据拟合的比较,认为ARIMA模型拟合度较差,三次指数平滑法的拟合精度居中,灰色系统拟合误差最小。     

中国及国际海洋科学发展态势文献计量分析

以SCIE、ESI、OA等数据库为统计分析源,对1996~2005年国际海洋科学论文产出的主题领域及国家分布、中国海洋科学论文产出的主题领域等从文献计量学的角度进行了统计分析,以揭示国际及中国海洋科学的发展现状和态势,并通过论文产出、国际1%顶尖论文数及热门论文数的统计揭示中国在国际海洋科学领域的科学影响力。