浙北潮下带（0——5m）大型底栖生物生态     

王海明  施维德 《海洋学研究》1996,14(4):67-77

首次对浙北潮下带（０～－５ｍ）水域生物学调查表明：共鉴定底栖生物２２２种，隶属１０３科１７０属；该区生物数量较高（生物量为８０．８８ｇ／ｍ２，栖息密度为６５５个／ｍ２），以软体动物为主要类群；群落结构可划分为五个类型。底栖生物的分布与水域盐度、温度、底质性质、海湾屏蔽度有密切的关系。  相似文献   

Biocorrosion by Bivalves   总被引：2，自引：0，他引：2  

Karl  Kleemann 《Marine Ecology》1996,17(1-3):145-158

Abstract. A survey of the historical background of chemically boring bivalves and the proposed methods of boring, indications for biocorrosion, observations, and experimental results are provided. The regional impact to the ecosystem is discussed with examples from the N. Adriatic, Caribbean, and E. Pacific. The fossil record of the geologically oldest biocorroders extends back into the Mesozoic, i.e ., U. Triassic for Lithophaga and Jurassic for gastrochaenids.  相似文献   

Seasonal methyltin and (3-dimethylsulphonio)propionate concentrations in leaf tissue of Spartina alterniflora of the Great Bay estuary (NH)     

James H. Weber  Marilyn R. Billings  Anne M. Falke 《Estuarine, Coastal and Shelf Science》1991,33(6)

Concentrations of total recoverable inorganic tin (TRISn), monomethyltin (MeSn³⁺), dimethyltin (Me₂Sn²⁺), trimethyltin (Me₃Sn⁺) and (3-dimethylsulphonio)propionate (DMSP) were determined in leaves of Spartina alterniflora from three sites in the Great Bay estuary (NH) from 8 May to 15 September 1989. Total methyltin concentration increased from 8·9 ng g⁻¹ (fresh weight) on 8 May to 472 ng g⁻¹ on 23 May, decreased to 52 ng g⁻¹ on 7 June and 16ng g⁻¹ on 20 June, and remained low until the last sample on 18 September. Statistical calculations showed that methyltin concentrations varied significantly with sampling week, but not with site. DMSP concentrations showed very different behaviour. During the same sampling period DMSP concentrations varied only from 7·5 to 26 μmol g⁻¹ (fresh weight). DMSP concentrations varied significantly for site, but not sampling week.  相似文献   

高糖化力根霉的分离及其制作“全曲清酒”的研究     

包文雅  于立新 《中国海洋大学学报(自然科学版)》1990,(3)

采用直接分离法、稀释法和毛细管分离法等方法,从酒药和大曲中分离得到了几株高糖化力的根霉纯培养,并应用于“全曲清酒”的制作;用富含淀粉的甘薯为原料,可省略通常采用的复杂的“发酵”工艺过程,从而降低了成本,可在乡镇企业推广生产  相似文献   

Seasonal Changes in Soluble Carbohydrates, Starch, and Energy Content in Mediterranean Seagrasses   总被引：2，自引：0，他引：2  

Helmut Pirc 《Marine Ecology》1989,10(2):97-105

Abstract. In all scagrass species investigated, rhizomes were the main storage organs for soluble carbohydrate reserves, and the highest levels were found in Cymodocea nodosa (U cria ) A scherson . Sucrose was the primary soluble carbohydrate identified in Posidonia oceanica (L.) D elile , and Zostera noltii H ornem . This disaccharide was dominant in Cymodocea nodosa roots, as well as in its rhizome in winter. Myo-inositol was the main cyclitol in Zostera noltii. In Cymodocea nodosa leaves 1-chiro-inositol was the main sugar component; it was also present to a lesser extent in the roots and rhizomes. The amounts of glucose and fructose were correlated with growth to a certain extent in all species. Higher amounts of starch were stored in the rhizomes of Posidonia oceanica and Zostera noltii. The energy content of Mediterranean scagrasses was significantly higher than in tropical species. No distinct seasonal trend in energy content could be observed.  相似文献   

2000年夏季莱州湾生态环境要素的分布特征   总被引：1，自引：0，他引：1  

高会旺  吴德星  白洁  石金辉  李正炎  江文胜 《中国海洋大学学报(自然科学版)》2003,33(2):185-191

论文依据 2 0 0 0年夏季 8月 2 9日至 9月 2日莱州湾的 1次综合性生态环境调查资料 ,给出了表、中、底 3层的平均温度、盐度、主要营养盐浓度及其比例和叶绿素 a浓度 ,分析了莱州湾的温盐结构、主要营养盐和叶绿素 a的分布特征。由于莱州湾的水深较浅 ,各要素的垂直分布都比较均匀。生态环境要素的水平分布表现为小清河口为高温、低盐、高营养盐和高叶绿素 a浓度区 ,小清河口东测的湾顶区域为高温、高盐、相对低的营养盐和叶绿素 a浓度区。此次观测到的盐度较 1997年以前有明显升高。莱州湾各层平均的 N/ P和 Si/ N分别为 16.73和 1.67,都比 1998～ 1999年渤海中部的值大 ,但 N/ P比 1992 ,1995和 1996年莱州湾的 N/ P明显偏低。叶绿素 a浓度与硅酸盐浓度之间有较好的相关关系 (α=0 .0 1) ,表、中、底 3层叶绿素 a浓度同硅酸盐浓度的线性相关系数分别为 :0 .5 4 ,0 .68和 0 .67  相似文献   

Investigation on the Deposition in an Excavated Trough at the East Shore of Jiaozhou Bay, China     

Zhang Jinshan Yu Guohua Research Engineer  River  Harbour Department  Nanjing Hydraulic Research Institute  Nanjing Research Senior Engineer  River  Harbour Department  Nanjing Hydraulic Research Institute  Nanjing 《中国海洋工程》1995,(3)

- Based on field investigations, this paper analyzes three types of harbour basinns and navigation channel excavated on seabed in Jiaozhou Bay, get a general rule of deposition for excavated trough, it found that pollution is one of crucial factors resulting in the deposition of the excavated trough in the east shore of Jiaozhou Bay. With these results, it predicted the annual deposition thickness for the excavated trough and disclosed the fact that it can't be deposited deadly during one storm. At the same time, with two-dimensional numerical model, it studied the effects of the excavated trough and the reclamation near shore on tidal cureent and said that the excavated trough can decrease the current velocity passing through the trough about 10- 15%, but only limited inside and near the trough and there are no effect on other regions; reclamation can cut off the pollution sources and no obvious effect on the currents of the Jiaozhou Bay. Connecting the deep trough and Cangkou tidal channel with a new  相似文献   

黄海表层盐度年变化的谐波分析     

沈佩玉 《海洋预报》1994,11(4):59-63

本文采用黄海（３５°Ｎ以北，１２４°Ｅ以西）断面调查资料，对海域表层盐度年变化进行谐波分析，讨论了年波与半年波位相与振幅在海区的分 布不同水系消长及运动的关系。  相似文献   

南极海冰与西北太平洋台风     

张林  薛振和 《海洋预报》1996,13(1):34-40

本文利用最大熵谱分别计算了南极４个区海冰和西北太平洋台风发生频数的变化周期，并对前３年的南极海冰强弱和当年的台风发生频率数进行了逐月时间序列相关分析。  相似文献   

氨基酸在粘土高岭石上吸附等温线的研究   总被引：2，自引：0，他引：2  

刘效兰  张正斌 《海洋科学》2002,26(9):1-4

研究了4种氨基酸（甘氨酸，赖氨酸，天冬氨酸，谷氨酸）在粘土高岭石上的吸附等温线以及金属铜离子对其等温线的影响。研究表明，氨基酸在高岭石上的吸附等温线以及金属铜离子存在时的吸附等温线均属Langmuir型等温线；铜离子浓度增加时，其等温线斜率也增加，并认为体系可形成Ⅰ型三元表面络合物，铜离子对氨基酸在高岭石上等温线影响的规律和在相同体系中它对氨基酸在高岭石上交换吸附百分率E（%）-pH曲线的影响规律相一致。  相似文献