Post-LGM sedimentation on the outer shelf-upper slope of the northernmost part of the São Paulo Bight, southeastern Brazil     

Michel Michaelovitch de Mahiques  Ilson Carlos Almeida da SilveiraSilvia Helena de Mello e Sousa  Marcelo Rodrigues 《Marine Geology》2002,181(4):387-400

Sedimentary and isotope data as well as ¹⁴C AMS dating on 15 box cores were used to identify the main post-Last Glacial Maximum (LGM) processes in the outer shelf and upper slope of the northernmost part of the São Paulo Bight, southeastern Brazil. Results show slight but significant variations in calcium carbonate, total sulphur and nitrogen contents as well as carbon and oxygen isotope ratios. Sedimentation rates, varying from 5 to 184 mm kyr⁻¹ are controlled by the shelf and upper slope morphology, the Brazil Current meander dynamics, and the Coastal Water offshore motion.  相似文献   

Pollution — a French perspective     

Gene de Castro 《Marine Policy》1977,1(4):342-343

A summary of the various forms of pollution control discussed at an international Anti-Pollution Course held at the French Merchant Marine School in Marseilles on 13–25 June 1977.  相似文献   

Long-Term Changes in Abundance of Yellowfin and Skipjack off the Coast of Angola     

de Campos Rosado  J. M. 《ICES Journal of Marine Science》1971,34(1):65-75

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Comments on “Cascades of dense water around the world ocean”     

X. Durrieu de Madron  V. Zervakis  D. Georgopoulos 《Progress in Oceanography》2005,64(1):83-90

Evidences of temperature-controlled dense water cascading off the Gulf of Lion shelf, in the northwestern Mediterranean, and several Aegean shelves in the northeastern Mediterranean are reported. Together with the Adiatic shelf, already listed by Ivanov, Shapiro, Huthnance, Aleynik, & Golovin (2004), these zones represent the major coastal areas of the Mediterranean Sea where dense water is produced.  相似文献   

Does the largest chela of the males of three crab species undergo an allometric change that can be used to determine morphometric maturity?   总被引：2，自引：1，他引：2  

Hall  Norman G.; Smith  Kim D.; de Lestang  Simon; Potter  Ian C. 《ICES Journal of Marine Science》2006,63(1):140-150

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Spatial patterns of groundfish assemblages on the continental shelf of Portugal   总被引：4，自引：1，他引：4  

Gomes  Manuel C.; Serrao  Ester; de Fatima Borges  Maria 《ICES Journal of Marine Science》2001,58(3):633-647

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Seasonal dynamics of ciliated protozoa and their potential food in an eutrophic estuary (Bay of Biscay)   总被引：2，自引：0，他引：2  

Iaki Urrutxurtu  Emma Orive  Alejandro de la Sota 《Estuarine, Coastal and Shelf Science》2003,57(5-6):1169-1182

Ciliate assemblages, together with phytoplankton and heterotrophic nanoflagellates (HNF) as their potential food, have been surveyed monthly along the salinity gradient of the Nervión River estuary from March 2000 to March 2002. A total of 135 taxa of ciliate have been identified corresponding to 20 orders. Scuticociliates, naked choreotrichs and oligotrichs were the most abundant groups, distributed throughout a broad range of salinity. In addition to these groups, which were the dominant taxa in the middle estuary, tintinnids were characteristic of the ciliate assemblages of the outer estuary whereas in the innermost part naked choreotrichs and oligotrichs decreased in number, being substituted by sessilids, hymenostomatids, peniculids and cyrtophorids. Total ciliate concentrations were among the highest reported in the literature for other estuaries and coastal waters, frequently reaching 10⁵ cells l⁻¹. Meanwhile, tintinnid concentrations were comparable with those of other estuarine and coastal waters. Based on a principal component analysis (PCA) three main groups were delineated, with ciliates and their potential food sources as variables. One was that constituted by freshwater ciliate such as sessilids, hymenostomatids, cyrtophorids and pleurostomatids, which appear in low numbers in the innermost part, mainly in winter. Another group contained diatoms, chlorophytes, flagellates, euplotids and scuticociliates, all of them broadly distributed along the estuary and reaching their maximum density in late spring–summer. The third group was made up of taxa mainly appearing at the seaward end such as dinoflagellates, cyanobacteria, haptorids, tintinnids, naked choreotrichs and oligotrichs, which reached the highest densities in summer and early autumn. Ciliates do not seem to be food limited in the Nervión River estuary or much controlled by metazoan grazing.  相似文献   

Erratum to “Synchroneity of oxygen minimum zone intensity on the Oman and Pakistan Margins at sub-Milankovitch time scales”: [Marine Geology 185 (2002) 283-302]     

G.J Reichart  S.J SchenauG.J de Lange  W.J Zachariasse 《Marine Geology》2002,192(4):437-438

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A Simulation Model of a Deep Meiobenthic Compartment: A Preliminary Approach     

F. de  Bovee J. Ph.  Labat 《Marine Ecology》1993,14(2):159-173

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Cyclic fluctuations of anoxia during Cretaceous time in the South Atlantic Ocean   总被引：1，自引：0，他引：1  

T. Jacquin  P.Ch. de Graciansky 《Marine and Petroleum Geology》1988,5(4)

The holes of the DSDP-IPOD program in the South Atlantic Ocean document two major anoxic events during Oxfordian to middle Albian times and secondly from late Cenomanian to Santonian times. The black shales formed during these two anoxic events differ in their rhythmicity and origin.During Lower Cretaceous time, the anoxic conditions resulted from the confined, euxinic nature of the basins. The rhythmicity of these black shales probably does not result from a global phenomenon (climatic or tectono-eustatic), but from local conditions resulting from the slender dimensions of the young ocean basin(s). The diversity and the diachroneity of the deposits from the south to the north precisely reflect the dynamics of the oceanic spreading.During Upper Cretaceous time, the anoxic conditions fluctuated in relation to a mid-water oxygen-minimum zone. The rhythmicity of black shale deposition seems to result from a global phenomenon, because of the widespread occurrence of the event. In the South Atlantic ocean, the cyclic fluctuations of anoxia were due to cyclic variations in the depth of the mid-water oxygen-minimum zone. There is no simple process to explain such rhythmicity. It probably results from the interplay of the three main variables which characterize the oceans at the time of the Cenomanian-Turonian boundary: the increased rate of sea floor spreading, high sea-levels and low water-circulation.  相似文献