钛型吸附剂的表面特性     

谢式南  王俊鹤  周英兰  孙爱平 《中国海洋大学学报(自然科学版)》1990,(3)

用自装的BET容量法装置测定了几种粒状钛型吸附剂的比表面及其孔径分布。测定是在常温减压下进行的。结果表明:钛型吸附剂在加铀海水中的吸铀量与样品的比表面及孔径分布有一定的内在联系。这种表面性质的研究对吸附剂的筛选有重要的指导意义。  相似文献   

The Distribution of Amphipoda in a Brackish-Water Lagoon in Greece   总被引：1，自引：0，他引：1  

Artemis Nicolaidou  Maria Karakiri 《Marine Ecology》1989,10(2):131-139

Abstract. The distribution of the benthic Amphipoda was studied in the brackish-water lagoon Mazoma of Amvrakikos Bay, Ionian Sea, Greece. Eleven amphipod species typical of the sublittoral zone, some with preference for enclosed bays and lagoons, were identified. Gammarus crinicornis, Microdeutopus bifidus, C. rotundirostris , and Erichthonius difformis are mentioned for the first time for Greek waters. The distribution of amphipods in the lagoon is governed by the vegetation and is probably modified by interspecific relations.  相似文献   

盐田中嗜盐菌的初步研究   总被引：4，自引：0，他引：4  

吕爱军  刘缠民  华栋  屈艾  朱必才 《海洋科学》2003,27(12):5-6

在连云港台南盐场盐田中取卤水和底泥样品，以盐(NaCl)为限制性生长因子，主要采用12％NaCl平板，对样品中的嗜盐菌进行初步鉴定和培养计数研究。结果表明，盐田中的嗜盐菌类群在菌落、个体特征以及数量分布上有所不同，并且底泥中的菌量比卤水中高1～2个数量级。  相似文献   

中国鱼类名录Ⅺ--隆头鱼亚目、尤鰧鱼亚目、绵鳚亚目、玉筋鱼亚目     

李明德  田新生  孙凯艳 《海洋通报》2003,22(4):70-76

隆头鱼亚目5科63属316种，鰧鱼亚目8科19属53种，绵鳚亚日3科7属8种，玉筋鱼亚目1科3属3种。  相似文献   

达山岛、平岛、车牛山岛邻近海域大型底栖生物分布特征   总被引：7，自引：0，他引：7  

高爱根  杨俊毅  陈全震  胡锡钢  董永庭  胡月妹 《海洋学报》2003,25(6):135-141

在海洋底栖生态系中,大型底栖生物在有机碎屑的分解利用、调节泥水界面的物质交换、促进水体的自净化中起着重要的作用,自身又是其他经济动物的食物,其生产量与渔业产量密切相关,因而底栖生物资源量分布常是衡量海区渔业资源状况的最基本要素.为了解苏、鲁交界海域的底栖生物资源量现状,于2002年6月对达山岛、平岛、车牛山岛(以下简称前三岛)邻近海域的大型底栖生物进行了调查,调查区位于海洲湾外侧,最近点距山东省岚山港和江苏省连云港约10～20km,调查范围为35°08 263'～34°59 598'N,119°14 686'～120°21 160'E.  相似文献   

Depth distribution of radiolarians from the Chukchi and Beaufort Seas, western Arctic     

Takuya Itaki  Masashi Ito  Hisashi Narita  Naokazu Ahagon  Hideo Sakai 《Deep Sea Research Part I: Oceanographic Research Papers》2003,50(12):1507

The depth distributions of the radiolarian fauna in the Chukchi and Beaufort Seas, marginal seas of the western Arctic Ocean, were examined quantitatively in depth-stratified plankton tows from 4 or 5 intervals above 500 m and in surface sediments from various depths between 163 and 2907 m. The radiolarian assemblage from the water column in September 2000 was dominated by Amphimelissa setosa and followed by the Actinomma boreale/leptoderma group, Pseudodictyophimus gracilipes and Spongotrochus glacialis. These species are related to the Arctic Surface Water shallower than 150 m. This assemblage is similar to that in the Greenland Sea relating to the ice edge, but did not contain typical Pacific radiolarians in spite of the flow of water of Pacific origin in this region. The living depth of Ceratocyrtis historicosa was restricted to the relatively warm water between 300 and 500 m corresponding to the upper Arctic Intermediate Water (AIW) originating from the Atlantic Ocean. Radiolarian assemblages in the surface sediments are similar to those in the plankton tows, except for common Cycladophora davisiana in sediment samples below 500 m. C. davisiana is probably a deep-water species adapted to the lower AIW or the Canadian Basin Deep Water ventilated from the shelves.  相似文献   

吉尼系数的计算及正态分布的吉尼系数     

陈峥  刘宝生  孙祥林 《中国海洋大学学报(自然科学版)》2002,32(4):663-666

本文给出了吉尼系数的一般计算公式 ,推导出正态分布的吉尼系数渐进无偏估计 ,并以实例对比了传统的吉尼系数的算法——万分法与本文中提出的估计方法。  相似文献   

Fractal Determination of Coastal Types Based on GIS--A Case Study of China     

Zhu xiaohua  WU Xiuqin  Wang Jian 《海洋通报(英文版)》2002,4(2)

The probability of fractal determination of coastal types based on GIS is preliminarily discussed with China as an example. Finally, some significant conclusions are drawn: (1) The fractal dimension of coastline of the bedrock coast is larger than that of the plain coast on the same scale map; (2) As far as the bedrock coast is concerned, the larger fractal dimension of coastline of the bedrock coast on the same scale map indicates that the bedrock coast is probably not typical; (3) As far as the plain coast is concerned, the smaller fractal dimension of coastline of the plain coast on the same scale map indicates that it is probably the silt plain coast; (4) The different substantial compositions affect the fractal dimensions of coastlines of different coastal types. In general, the coast which lies in the north of the Hangzhou Bay consists of sand mainly, its surface is flat, and it is connected with the coastal plain, its landform is broad shoal, its total change is comparatively homogenous in the tidal dynamic process, and thus, the relatively smaller fractal dimension of coastline results from this. For the bedrock coast, there is more bedrock, the coastline is comparatively smooth and straight, being affected by the faults and ocean dynamic process, which result in the larger fractal dimension.  相似文献   

Sensitivity to stress of the estuarine bivalve Macoma balthica from areas between the Netherlands and its southern limits (Gironde)     

H. Hummel  C. Amiard-Triquet  G. Bachelet  M. Desprez  J. Marchand  B. Sylvand  J.C. Amiard  H. Rybarczyk  R.H. Bogaards  J. Sinke  Y. De Wit  L. De Wolf 《Journal of Sea Research》1996,35(4):315-321

Variation in the sensitivity to stress of Macoma balthica was measured in several French and Dutch estuaries. For adult and juvenile Macoma balthica exposed to copper under conditions of starvation, differences in mortality rate, condition, glycogen, burrowing rate and copper content were assessed. No significant differences were observed between adults and juveniles; the influence of treatment and origin was always evident. Animals from the most southern estuaries, Loire and Gironde, near to the species's southern limit of distribution, showed, in the field, the strongest deviations for the ecophysiological traits measured, and were in the experiments the most sensitive to stress.  相似文献   

A computer simulation model for predicting rates and scales of movement of demersal fish on the European continental shelf   总被引：1，自引：1，他引：1  

Arnold  G. P.; Holford  B. H. 《ICES Journal of Marine Science》1995,52(6):981-990

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