A PCR-based assay (Mrnif) targeting the nifH gene of Methanobrevibacter ruminantium was developed to detect fecal pollution from domesticated ruminants in environmental water samples. The assay produced the expected amplification product only when the reaction mixture contained DNA extracted from M. ruminantium culture, bovine (80%), sheep (100%), and goat (75%) feces, and water samples from a ...

The occurrence of the myxosporean parasite Kudoa camarguensis was surveyed monthly during 1997 in a brackish-water lagoon of the Rhĵne River delta (France). K. camarguensis was found on its typical host, Pomatoschistus microps, and on an additional host, P. minutus. Prevalence and mean abundance were higher in the typical host than in the additional host due to differences in the temporal occup...

Five out of 28 Great Cormorants collected in spring 2005 from the Vistula Lagoon were found to contain a total of 19 (16 in the stomach and 3 in the intestine) stage III larvae of Anisakis simplex. Spring is the season when nematode-infected herring from the western Baltic, Danish straits, and the North Sea arrive in the Vistula Lagoon and transmit the infection to cormorants feeding on them. T...

In 1971, I spent five months in Ghana, West Africa, collecting data for an MSc thesis, "On the Ecology and Fishery of a Small West African Lagoon". I was puzzled at the time by the behavior of the fishermen who exploited the Sakumo lagoon, near Tema (Fig. 1). Based in a nearby village, they were part-timers or full-timers, but fished in either case rarely more than about 4 hours at a time, then...

A single series of representative observations indicates that both the productivity and standing crop of phytoplankton in Fanning Lagoon are much greater than reported in the lagoons of other Pacific atolls. Productivity, as measured by the radiocarbon method, averaged 9.29 mg C/m3/hr, while cWorophyll a averaged 0.548 j.!g/liter. Phytoplankton, principally dinoflagellates with some diatoms and...

This paper describes the evolution in time and space of the submerged vegetation in a lagoon. This model was developed for the Orbetello Lagoon Management Office to predict the development of both macroalgae and macrophytes and test the actions to favour the latter. Based on a previous model describing the interactions between nutrients and the submerged vegetation, this paper presents a furthe...

BACKGROUND The discharge of complex mixtures of nutrients, organic micropollutants, and antibiotic resistance genes from treated municipal wastewater into freshwater systems are global concerns for human health and aquatic organisms. Antibiotic resistance genes (ARGs) are genes that have the ability to impart resistance to antibiotics and reduce the efficacy of antibiotics in the systems in whi...

The direct influence of freshwater discharge along the coastal regions is observed in several processes following a wide spectrum on spatial and temporal variability. The knowledge of relative importance of this physical forcing is fundamental by the correct management of the coastal sites and the understanding of consequences associated with processes of climatic order is one point deserves so...

Underwater archaeological research, survey, and documentation are influenced by environmental conditions, in particular for the photographic aspects. The last challenge of underwater survey is application photogrammetric technique low visibility murky lagoon water with a strong current constant tide. These conditioning factors have determined employment digital technologies to obtain 3D model s...

RESEARCH ARTICLE This paper provides an overview of some of the research activities carried out in the Oristano 1 Lagoon-Gulf system (western Sardinia, Italy) aimed at assessing the ecological quality of a complex transitional-coastal system renowned for its naturalistic and economical value, but subject to an increasing anthropogenic pressure. Numerical models concerning physical and ecologica...