Oxytetracycline-resistant bacteria were isolated from a mariculture farm in China, and accounted for 32.23% and 5.63% of the total culturable microbes of the sea cucumber and the sea urchin rearing waters respectively. Marine vibrios, especially strains related to Vibrio splendidus or V. tasmaniensis, were the most abundant resistant isolates. For oxytetracycline resistance, tet(A), tet(B) and ...

Climatic changes have decreased the stability of Gulf Stream (GS), increasing frequency at which its meanders interact with Mid-Atlantic Bight (MAB) continental shelf and slope region. These intrusions are thought to suppress biological productivity by transporting low-nutrient water otherwise productive edge Here we present evidence widespread, anomalously intense subsurface diatom hotspots in...

Coastal aquifers involve varying conditions in time and space, owing to the occurrence of free and moving boundaries, such as the water table, seepage face and saltwater intrusion interface. A fast Updating Procedure (FUP) is developed for solving these interfaces in steady and transient conditions with the finite element method. Several test examples, which involve confined and phreatic ground...

High resolution planktic foraminifer fauna assemblage data are used to reconstruct the millennial-scale sea surface temperature (SST) variability of the past 40000 years at an IMAGES core site (MD012404) in the Okinawa Trough in the East China Sea (ECS). The fauna assemblages in core MD012404 are dominated by five species Globigerinoides ruber, Globigerina bulloides, Neogloboquadrina dutertrei,...

The reservoir group focusing on the Three Georges has been established in upper Yangtze River, with a total regulation capacity of 51.5 billion m3. dispatch plays an important role regulating runoff. Economic activity River estuary poses high requirements for water resources security. quality main supply reservoirs is influenced by saltwater intrusion. upstream can enhance sea inlet runoff and ...

Abstract. Increasing melt of ice sheets at their floating or vertical interfaces with the ocean is a major driver marine sheet retreat and sea level rise. However, extent to which warm, salty seawater may drive melting under grounded portions still not well understood. Previous work has explored possibility that dense intrudes beneath relatively light subglacial freshwater discharge, similar “s...

topography, alternating monsoon forcing and conjunction of several current systems [such as the Zhejiang–Fujian (Zhe–Min) Coastal Current, the Kuroshio intrusion and the extension of the South China Sea Warm Current], the physical and biogeochemical processes and ecosystem dynamics in the Taiwan Strait vary significantly both in space and in time. Our recent interdisciplinary studies, combining...

The bactericidal action of sea water was measured as the difference in survival of cells of Escherichia coli in untreated and autoclaved portions of water samples. The beneficial effect of sterilization by heat on the survival of E. coli in sea water varied with season and was most marked during summer months, however, the magnitude of the effect differed greatly from sample to sample. The more...

INTRODUCTION The addition of copper salts to dense suspensions of unwashed sea-urchin spermatozoa in sea water markedly stimulates the O2 uptake of the suspension (Rothschild & Tuft, 1950). An investigation of the Cu content of sea-urchin semen and seminal plasma was therefore of interest and is the subject of this note. At the same time the coelomic fluid of Echinus esculentus and sea water we...

Heterogeneous systems composed of hydrophobic nanoporous materials and water are capable, depending on their characteristics, of efficiently dissipating (dampers) or storing ("molecular springs") energy. However, it is difficult to predict their properties based on macroscopic theories-classical capillarity for intrusion and classical nucleation theory (CNT) for extrusion-because of the peculia...