Bacteriological investigation of the neuston and plankton in the Fraser River estuary,British Columbia   总被引：1，自引：0，他引：1  

C.R. Bell  L.J. Albright 《Estuarine, Coastal and Shelf Science》1982,15(4):385-394

Microbiological parameters were examined in the surface microlayer (150 μm) and the subsurface waters (1 m) of the Fraser River estuary (British Columbia) at salinities of 0, 15 and 25‰. Little difference was observed in the neustonic variables between these three stations. A comparison of the neuston with the plankton over the estuary as a whole revealed elevated detritus, particulate organic carbon and nitrogen but reduced ATP, heterotrophic activity and percentage respiration in the neuston. Enrichment of bacterial numbers or dissolved organic carbon was not observed in the surface microlayer.  相似文献   

Transport and distribution of bacteria and diatoms in the aqueous surface microlayer of a salt marsh     

Ronald W. Harvey  Leonard W. Lion  Lily Y. Young 《Estuarine, Coastal and Shelf Science》1983,16(5):543-547

The effects of tide and wind upon the distribution and transport of bacteria and diatoms in the aqueous surface microlayers of a Massachusetts and San Francisco Bay salt marsh were examined. The compression of the surface films by both tide and wind resulted in significant enrichments of bacterioneuston. At the San Francisco Bay site, significant numbers of diatoms were transported within the microlayer over a tidal cycle.  相似文献   

A comparison of plastic and plankton in the north Pacific central gyre   总被引：4，自引：0，他引：4  

Moore CJ  Moore SL  Leecaster MK  Weisberg SB 《Marine pollution bulletin》2001,42(12):1297-1300

The potential for ingestion of plastic particles by open ocean filter feeders was assessed by measuring the relative abundance and mass of neustonic plastic and zooplankton in surface waters under the central atmospheric high-pressure cells of the North Pacific Ocean. Neuston samples were collected at 11 random sites, using a manta trawl lined with 333 u mesh. The abundance and mass of neustonic plastic was the largest recorded anywhere in the Pacific Ocean at 334 271 pieces km² and 5114 g km², respectively. Plankton abundance was approximately five times higher than that of plastic, but the mass of plastic was approximately six times that of plankton. The most frequently sampled types of identifiable plastic were thin films, polypropylene/monofilament line and unidentified plastic, most of which were miscellaneous fragments. Cumulatively, these three types accounted for 98% of the total number of plastic pieces.  相似文献   

Natural and microcosm phytoneuston communities of Sequim Bay,Washington     

John T. Hardy  Melee Valett 《Estuarine, Coastal and Shelf Science》1981,12(1):3-12

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Measurements of biomass and activity of neustonic microorganisms     

Y. De Souza Lima  M.J. Chretiennot-Dinet 《Estuarine, Coastal and Shelf Science》1984,19(2):167-180

Microlayer samples from a coastal marine area near Marseilles (France) collected in 1979 and 1980 have been analysed for POC, PON, chlorophyll a, ATP, cell counts, carbon fixation and in some cases for heterotrophic activity. Comparison of microlayer data with those of underlying water showed in most cases enrichment of organic matter and microorganisms in the surface microlayer. Carbon fixation values were comparable to those observed at 0·50 m except in the slicks, where phytoneustonic activity was higher than that of the underlying phytoplankton. Though total heterotrophic activity was higher in the surface film, the turnover time was not significantly different in both microlayer and underlying water. Our data show that enrichment is highly dependent on sea conditions; whenever slicks are present, the surface film seems to function like an eutrophic system, including active living material, although detritus is regularly present in large amounts.  相似文献