Quantifying contributions to light attenuation in estuaries and coastal embayments: Application to Narragansett Bay, Rhode Island.

In Narragansett Bay, light attenuation by total suspended sediments (TSS), colored dissolved organic matter (CDOM), and phytoplankton chlorophyll-a (chl-a) pigment is 129%, 97%, and 70%, respectively, of that by pure seawater. Spatial distribution of light attenuation indicates higher values in the upper Bay, where rivers with sediment and nutrient-rich waters enter and elevate TSS, CDOM, and chl-a concentrations. The temporal trends of light attenuation during the summer months (July-August) differed at various locations in the Bay, having the highest values in July.

Full-thickness hysterocystoplasty for management of a large bladder defect: experimental study in goats.

The uterine tissue of three healthy nonpregnant goats was evaluated experimentally as a graft for closure of a bladder defect. Goats were subjected to ovariectomy, and then one detubularized uterine horn was used as a graft to close a large defect in the ventral aspect of the bladder. Follow up included monthly radiographic and ultrasonographic examinations and evaluations of kidney function and electrolytes changes for six months.

A method to incorporate ecology into residence time of chemicals in embayments: local effect time.

Residence times are defined classically by the physical and chemical aspects of water bodies rather than by their ecological implications. Therefore, a more clear and direct connection between the residence times and ecological effects is necessary to relate these timescales quantitatively to ecology. The concept of local effect time (LET) is proposed in this paper as a timescale with spatial resolution that relates to ecological components and their spatial distribution within an embayment.