The performances of a constructed wetland and a water pollution control pond were compared in terms of their abilities to reduce stormwater bacterial loads to recreational waters. Concentrations of thermotolerant coliforms, enterococci and heterotrophic bacteria were determined in inflow and outflow samples collected from each system over a 6-month period. Bacterial removal was significantly le...

The present work has been carried out to study the effect of lime and pond ash on geotechnical behaviour of fine sand. Fine sand found in deserts and near sea shores is not readily suitable for supporting buildings and roads, as it is loose and vulnerable to collapse upon wetting. Fine sand having high permeability and low shear strength is also not suitable for earthen dam construction. For th...

Genetic diversity and community structure of sulfate-reducing bacteria was investigated down the 12 meter water column of Siders Pond, a meromictic salt pond in Falmouth, MA. The physical and chemical gradients down this water column were also investigated, as they provide distinct niches for the microorganisms of Siders Pond. Microbial DNA was extracted from water samples at 12 depths. The dis...

0017-9310/$ see front matter 2010 Elsevier Ltd. A doi:10.1016/j.ijheatmasstransfer.2010.01.017 * Corresponding author. Tel.: +1 775 784 4986; fax E-mail addresses: [email protected] (F. Su Tyler), [email protected] (A.E. Childress). A fully coupled two-dimensional, numerical model that evaluates, for the first time, the effects of doublediffusive convection in the thermal performance and stabi...

Bream pond aquaculture plays a very important role in China's aquaculture industry and is the main source of aquatic products. To regulate and control pond water quality and sediment, a movable solar pond aquaculture water quality regulation machine (SMWM) was designed and used. This machine is solar-powered and moves on water, and its primary components are a solar power supply device, a sedim...

The Ecology contribution to address this question is to determine possible physicochemical impacts on 1) pond water quality and biological integrity, and 2) avulsed pit pond water quality and biological integrity in the historical pit location and receiving waters. These questions will be addressed by all study partners together in a more comprehensive fashion after the interim phase of reporting.

The European Pond Turtle is a predominantly aquatic species, generally assumed to feed exclusively under water by using hydrodynamic mechanisms. We analysed the kinematics of the aquatic food uptake and food transport by using high-speed videos with 500 fps. The analyses revealed that subadult E. orbicularis use compensatory suction for food uptake, but the food transport is performed by a comb...

We found strain differences in the ability of wild Alberta Lymnaea stagnalis to form long-term memory (LTM) following operant conditioning when L. stagnalis were collected from the wild and trained in the laboratory. Lymnaea stagnalis obtained from the Belly River watershed had an enhanced ability to form LTM compared with those from an isolated pond (referred to as Jackson snails). We therefor...

The influence of environmental complexity on brain development has been demonstrated in a number of taxa, but the potential influence of social environment on neural architecture remains largely unexplored. We investigated experimentally the influence of social environment on the development of different brain parts in geographically and genetically isolated and ecologically divergent populatio...

Razorback sucker (Xyrauchen texanus) larvae from adults exposed to selenium at three sites near Grand Junction, Colorado, for 9 months were used in a 30-day waterborne and dietary selenium study. Selenium concentrations in water averaged <1.6 microg/L from 24-Road, 0.9 microg/L from Horsethief, 5.5 microg/L from Adobe Creek, and 10.7 microg/L from the North Pond. Selenium in dietary items avera...