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Ecology

University of Rhode Island

2009

Articles 1 - 3 of 3

Full-Text Articles in Life Sciences

Are We Fooling Ourselves??? Eelgrass And Subaqueous Soils As A Refuge For Fecal Indicator Bacteria, Jessie Dyer May 2009

Are We Fooling Ourselves??? Eelgrass And Subaqueous Soils As A Refuge For Fecal Indicator Bacteria, Jessie Dyer

Senior Honors Projects

A beach closure during the height of the summer can cost a coastal community approximately $37,000. In 2006, 349 beach closures in Rhode Island were due to presumed human fecal contamination. Fecal contamination is determined based on enumeration of fecal indicator bacteria. Fecal enterococci (FE) are the commonly used indicator bacteria for human fecal contamination in fresh and coastal waters. The EPA has suggested that FE is the best indicator of human health risk in salt water used for recreation and shell fishing activities. Recently, molecular analysis of Bifidobacterium adolescentis has been introduced as a more reliable, specific indicator of …


The Effects Of Tail Flukes On The Swimming Pattern Of Atlantic Bottlenose Dolphins, Lauri Leach May 2009

The Effects Of Tail Flukes On The Swimming Pattern Of Atlantic Bottlenose Dolphins, Lauri Leach

Senior Honors Projects

Atlantic bottlenose dolphins are top predators in the wild, due in part because they are excellent swimmers. When dolphins swim through the water, the tail flukes are moved in an up and down motion to propel the animal through the water. They use the pectoral fins for steering and braking, and the dorsal fin for stabilization as they swim. Using this style of swimming, Atlantic bottlenose dolphins can swim up to 25 miles per hour and leap 15 to 20 feet into the air.

During the spring of 2008, I was an intern at the Clearwater Marine Aquarium in Florida. …


Factors Influencing Interactions Between Ticks And Wild Birds, Amy A. Diaz May 2009

Factors Influencing Interactions Between Ticks And Wild Birds, Amy A. Diaz

Senior Honors Projects

Lyme disease, a tick-borne bacterial illness, is the most common vector-borne infection in north temperate areas worldwide. Ticks, while minute in size, can be competent vectors of both human and animal diseases. Upon hatching, larvae must take a blood meal in order to transform into the next life stage. When taking this first blood meal, the larval tick may ingest blood containing pathogens. If this occurs, the newly emerged nymphal tick is capable of transmitting infection to the next host, which can become infected and, if reservoir competent, infective. When the pathogen carrying vector is attached long enough, a host …