Using benthic macrofauna to assess environmental quality of four intertidal mudflats in Hong Kong and Shenzhen Coast   总被引：4，自引：0，他引：4  

Cai Lizhe  Nora F. Y. Tam  Teresa W. Y. Wong  Ma Li  Gao Yang  Yuk-Shan Wong 《海洋学报(英文版)》2003,22(2):309-319

Abstract-Intertidal zone is a significant wetland between land and ocean. It plays an important rolein maintaining local ecological balance. Both Mai Po and Futian intertidal mudflats are located in Shen-zhen Bay and are important "refueling" point along the East Asian/Australian flyway of migratory birds.The environmental quality of Mai Po and Futian mudflats have aroused great concern due to rapid eco-nomic developments in Hong Kong and Shenzhen in recent decades. Microinfauna of Mai Po and Futianmudflats was investigated in December 2000 and the faunal data were used to assess their environmentalquality. Two other mudflats, namely Ma Wan Typhoon Shelter (a more disturbed area) and Luk Kengintertidal mudflat (a place with relatively less human disturbance), were also sampled for macroinfaunaand used as reference mudflats. Shannon-Weaver species diversity index (I_(sd)), biotic coefficient (C_b)and macrofaunal pollution index (I_(mp)) of the macrofauna community on four intertidal mudflats wereused to  相似文献   

三丁基锡对褐菖鲉(Sebastiscus marmoratus)体内苯并(α)芘代谢的影响     

郑榕辉  赵扬  陈奕欣  左正宏  王重刚 《海洋学报》2007,29(4):165-169

在水生毒理学研究中,污染物与污染物之间的相互作用是一个重要的课题.苯并(α)芘[benzo(α)pyrene,BaP]是一种具有致癌性的多环芳烃(poly-cyclic aromatic hydrocarbon,PAH),而三丁基锡(tributyl tin,TBT)则是用于防污涂料的具有很强毒性的有机金属.许多化学物进入生物体内后的转化分为两个阶段.在Ⅰ相反应阶段,亲脂性底物被氧化代谢形成各种中间代谢物,这些中间代谢物具有很高的生物活性,容易对生物体产生毒性.  相似文献   

南麂列岛潮间带环境本底调查     

张健  杨晓兰 《海洋学研究》1994,12(2):77-83

本文系根据１９９２年８月和１９９３年２月（夏、冬两季）对南麂列岛潮间带的环境本底调查以及对水质、底质、生物样监测结果的资料整理而成。调查结果表明，潮间带水质、底质除个别断面外，均处于良好状态。生物体重金属残留量全部低于全国海岸带调查时统一的标准，生态环境条件较好。  相似文献   

硫酸皮肤素寡糖的分离与制备   总被引：2，自引：0，他引：2  

于广利  管华诗  Wang Qun  Hyun OK Yang  Toshihiko Toida 《中国海洋大学学报(自然科学版)》2001,31(6):849-854

利用软骨素酶 ABC (Chondroitinase ABC,EC4 .2 .2 .4 )对硫酸皮肤素 (Dermatan Sul-fate,DS)进行控制降解。对得到的混合寡糖首先采用低压凝胶渗透色谱 (L PGPC)进行分级 ,然后对每一组分再利用强阴离子交换高压液相色谱 (SAX- HPL C)进行分离 ,最终制备出聚合度为 2 ,4 ,6 ,8,10 ,12的寡糖纯品。寡糖纯度采用 SAX- HPL C,毛细管电泳 (CE)以及聚丙烯酰胺凝胶电泳(PAGE)进行检验 ,结构采用电喷雾离子化质谱 (ESI- MS)以及核磁共振波谱 (NMR)技术确定  相似文献   

Random wave-current interactions in water of varying depth     

M. A. Tayfun  R. A. Dalrymple  C. Y. Yang 《Ocean Engineering》1976,3(6):403-420

Refraction of incoherent random gravity waves with currents and bottom topography results in spatial variations in the spectral characteristics of the free surface. Prediction of such variations based on the radiation transfer equation is in a simple analytic form for the case of one dimensional inhomogeneities in currents and topography. This analytic form is examined in terms of two-dimensional wave number- and polar frequency-direction spectra along the associated dynamic and kinematic constraints relevant to wave breaking and reflection. Results are specialized to the simplest case of horizontal shear currents in deep and shallow water with explicit examples to illustrate the relative and combined effects of currents and topography on free surface spectra.  相似文献   

胶州湾海水中颗粒有机碳含量的分布与变化   总被引：6，自引：1，他引：6  

孙作庆  杨鹤鸣 《海洋科学》1992,16(2):52-55

本文报道了胶州湾表层海水及C_3和D_3站中层和底层水中的颗粒有机碳(POC)的分布与变化规律。结果表明,胶州湾POC年平均浓度为155～410μg/L;平面分布有明显的规律性,近岸和河口一带的含量较高,湾中部较低,湾口诸站为最低;垂直分布有个别数值偏高或偏低现象,但没有明显的规律;季节变化较明显,初春较高,秋季较低。  相似文献   

南海海盆磁异常理论剖面的计算和磁条带的初步分析     

王述功  高仰 《海洋科学》1990,14(6):9-15

  相似文献   

Species composition and spatial distribution of euphausiids of the yellow sea and relationships with environmental factors   总被引：1，自引：0，他引：1  

Won Duk Yoon  Joon Yong Yang  Donghyun Lim  Sung Hwan Cho  Gyung Soo Park 《Ocean Science Journal》2006,41(1):11-29

We investigated species composition and spatial distribution of the euphausiid community in the Yellow Sea and identified the relationship with environmental factors (temperature, salinity, chlorophyll a, nitrate, phosphate, and silicate) using bimonthly data from June, 1997 to April, 1998. The environment varied during the sampling period. In warm seasons, thermocline was well developed rendering lower temperature and higher salinity and nutrient concentrations in the bottom layer. During cold seasons the water column was well mixed and no such vertical stratification was noted. Horizontal distribution of temperature, however, differed slightly between near-coast and offshore areas because of the shallow depth of the Yellow Sea, and between southern and northern areas because of the intrusion of water masses such as Yellow Sea Warm Current and Changjiang River Diluted Water. Four euphausiid species were identified:Euphausia pacifica, E. sanzoi, Pseudeuphausia sp. andStylocheron affine. E. sanzoi andS. affine were collected, just one juvenile each, from the southern area in June and December, respectively.Pseudeuphausia sp. were collected in the eastern area all the year round except June.E. pacifica occurred at the whole study area and were the predominant species, representing at least 97.6% of the euphausiid abundance. Further, the distribution pattern of the species was varied in regards to developmental stages (adult, furcilia, calyptopis, egg). From spring to fall,E. pacifica adults were abundant in the central area where the Yellow Sea Bottom Cold Water prevailed. Furcilia and calyptopis extended their distribution into nearly all the study area during the same period. From late fall to winter, adults were found at the near-coastal area with similar pattern for furcilia and calyptopis. The distribution pattern ofE. pacifica was consistent regarding temperature, salinity, and three nutrients during the sampling period, whereas chlorophyll a showed a different pattern according to the developmental stages. The nutrients should indirectly affect via chlorophyll a and phytoplankton concentration. With respect to these results, we presented a scenario about how the environmental factors along with the water current affect the distribution ofE. pacifica in the Yellow Sea.  相似文献   

酶解鲐鱼蛋白制备低分子肽制品   总被引：6，自引：0，他引：6  

裘迪红  周涛  戴志远 《海洋学研究》2001,19(2):63-68

介绍了以鲐鱼为原料 ,采用双酶水解技术 ,制备高质量的低分子肽粉末制品的最佳工艺。对鲐鱼水解液 4种脱苦脱腥的方法进行了比较 ,认为活性碳脱除法既可脱腥 ,又可脱苦、脱色 ,是鲐鱼水解液脱苦脱腥较好的方法。经正交试验得其最佳组合 :每升水解液中活性碳的用量为 1 0 g;时间为 40 min;温度为 40℃。制品为一种淡黄色粉末 ,含有较多的二肽、三肽等低分子肽 ,氨基酸种类齐全 ,富含人体所需矿物质元素的高质量的食品原料。  相似文献   

中国近海龙介虫科 (多毛纲：缨鳃虫目)的研究Ⅱ     

孙瑞平  杨德渐 《海洋科学集刊》2001,(43):184-208

本文是中国近海多毛纲、缨鳃虫目、龙介虫科(石灰虫科)分类区系研究的第二篇报道。本科动物除吴宝铃、陈木(1981、1985)报道5种(含2新种)，杨德渐、孙瑞平(1988)报道6种，孙瑞平(1998)报道南沙群岛6种(含1新种)， Fiege and Sun(1999)报道海南岛22种，以及孙瑞平、杨德渐(2000)第一篇报道龙介虫科的盘管虫属 Hydroides 28种外，迄今国内尚无系统研究。作者对中国科学院海洋研究所历年收藏的标本进行了研究，现报道龙介虫科的伪柱盖虫属 Pseudovermilia、龙介虫属 Serpula、半龙介虫属 Semiserpula、半柱盖虫属 Semivermilia、旋鰓虫属 Spirobranchus和柱盖虫属 Vermiliopsis共6属23种(2新种，7种为我国首次记录和1个复合种)。模式标本保存在中国科学院海洋研究所标本馆，其种名录如下(有*者为我国首次记录)。  相似文献