Darwin Harbour in northern Australia is an estuary in the wet-dry tropics subject to increasing urbanization with localized water quality degradation due to increased nutrient loads from urban runoff and treated sewage effluent. Tropical estuaries are poorly studied compared to temperate systems and little is known about the microbial community-level response to nutrients. We aimed to examine t...

Pyrethroid insecticide use in California, USA, is growing, and there is a need to understand the fate of these compounds in the environment. Concentrations and toxicity were assessed in streambed sediment of the San Joaquin Valley of California, one of the most productive agricultural regions of the United States. Concentrations were also measured in the suspended sediment associated with irrig...

The very large cells of the marine green alga Valonia macrophysa permit one to obtain several cubic centimeters of fluid from the central vacuole of a single cell (cf. Wodehouse, 1917), without involving appreciable alteration in the composition of the cell-sap through protoplasmic 'injury during the process of extraction (cf. Chambers, 1917). Estimations have been made of the acidity of this c...

BENFER, N.P., KING, B.A. and LEMCKERT, C.J., 2007. Salinity observations in a subtropical estuarine system on the Gold Coast, Australia. Journal of Coastal Research, SI 50 (Proceedings of the 9th International Coastal Symposium), 646 – 651. Gold Coast, Australia, ISSN 0749.0208 Saltwater Creek and Coombabah Creek are branches of the Coomera River estuary situated within the subtropical Gold Coa...

The Marchfeld basin with a size of approximately 1000 km2 represents the Austrian "granary". To prevent shortage of water as a result of increased ground water removal for irrigation, industrial purposes and drinking water supply, a canal being 18 km in length was constructed from the Danube to the center of the Marchfeld. From there, water is further distributed via two creeks (Russbach and St...

Check dams are used in gullies to prevent vertical downcutting of the thalweg. built as log crib structures common steep creeks prone floods or debris floods. Recent experience with performance check subject flow loadings is less common, those often made from reinforced concrete, steel masonry. This paper summarizes our six a gully at East Gate Landslide, between Revelstoke and Golden, BC, Cana...