A coupled biological–physical box model is developed to investigate the seasonal and interannual variability of marine plankton in strongly estuarine systems such as the semi-enclosed estuary of the Strait of Georgia and Juan de Fuca Strait on the west coast of Canada. The estuarine circulation not only supplies nutrients to the euphotic layer but also transports plankton between the straits, c...

Elucidating the relationship between ciliate communities in the benthos and the plankton is critical to understanding ciliate diversity in marine systems. Although data for many lineages are sparse, at least some members of the dominant marine ciliate clades Oligotrichia and Choreotrichia can be found in both plankton and benthos, in the latter either as cysts or active forms. In this study, we...

Plankton size classes of <3 mum consisting largely of unicellular cyanobacteria accounted for 15 to 40% of the total primary production and generally represented <5% of the total phototrophic plankton biovolume in three South Carolina reservoirs.

Planktonic organisms constitute the base of many aquatic food webs. Indeed zooplankton is the key mediator between energy synthesized by phytoplankton and higher trophic levels. Because plankton can vary quickly in term of abundance and biomass according to variations of environmental conditions, it constitutes a significant bio-indicator of global changes like increasing of atmospheric CO 2 , ...

PCR-denaturing gradient gel electrophoresis (DGGE) and canonical correspondence analysis (CCA) were used to explore the relationship between eukaryotic plankton community succession and environmental factors in two aquaculture pond models with gibel carp Carassius auratus gibelio. The main culture species of pond 1 were gibel carp and grass carp, and the combined density was 46224 fingerling/ha...

Enterococci are used to evaluate recreational-water quality and health risks in marine environments. In addition to their occurrence in feces of warm blooded animals, they are also common epiphytes. We investigated the contribution of plankton- or particle-associated enterococci in estuarine and coastal water. Seven water and size-fractionated plankton samples were collected monthly between Apr...

Four feeding levels (40%, 60%, 80% and 100% of satiation) were designed as the different treatment groups to assess its effects on water quality and plankton community structure in the yellow catfish rearing enclosure ecosystem. The results showed that the weight gain and specific growth rate decreased significantly as the feeding level decreased. The soluble nutrients (except for NO2-N) concen...

A visual segmentation mechanism for a connectionist pattern recognition system is sought. However, to find such a device requires the solution of the dynamic binding problem. Visual segmentation could be learned by a dynamic binding network. Several puta-tive dynamic binding mechanisms are discussed but each is found to have weaknesses. Two mechanisms are being studied in greater depth so that ...

Human norovirus (NoV) has been studied extensively as an important cause of gastroenteritis outbreaks worldwide. While oysters are a primary vehicle for infection, few studies have examined the wider distribution of NoV in the estuarine environment. Active shellfish-harvesting areas in Georgia were examined for the prevalence, genotype diversity, and concentrations of NoV in a variety of estuar...