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Physical Sciences and Mathematics Commons™
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Full-Text Articles in Physical Sciences and Mathematics
Fiddler Crabs And Selfish Herds: High School Cliques Or More Diverse?, Shelby Warrelmann
Fiddler Crabs And Selfish Herds: High School Cliques Or More Diverse?, Shelby Warrelmann
Bridges: A Journal of Student Research
Marsh fiddler crabs (Uca pugnax) have diverse foraging habits which are dependent on the personality of each crab. The formation of droves or preference to scavenge alone may correspond to factors such as: Location within a herd, herd size, size of males, and feeding rate. Previous research suggests that 1) a central location in a herd corresponds to an increase in feeding rate 2) herd size doesn't affect feeding rates and 3) location within a herd often is related to an individual's size. A multi-year observational study was conducted to determine the validity of these claims and found that while …
Dissolved Inorganic Nitrogen Dynamics In Swash Zone Sands Of Long Bay, Sc, Alexis F. Echols
Dissolved Inorganic Nitrogen Dynamics In Swash Zone Sands Of Long Bay, Sc, Alexis F. Echols
Bridges: A Journal of Student Research
A key component affecting the biogeochemistry of the sedimentary environment is pore water between grains of sediments. Sedimentary microorganisms are constantly modifying chemical compounds as part of their life functions which are then exchanged between the sediment column and the overlying water column. Dissolved inorganic nitrogen, a major element for life, takes on several forms including nitrate, nitrite, and ammonium which vary in concentration throughout the sediment and with respect to each other. The relative concentrations of these nitrogen species have been previously briefly explored in sandy columns, where redox gradients that control their relative concentrations can be fairly deep …
The Clean Air Act And Its Impact On Ground Level Ozone Pollution Levels In Los Angeles, California, Rebecca Ford
The Clean Air Act And Its Impact On Ground Level Ozone Pollution Levels In Los Angeles, California, Rebecca Ford
Bridges: A Journal of Student Research
Ozone (O3) occurs as a photochemically produced pollutant in the troposphere and its emission and concentration is regulated by the Clean Air Act (CAA) of 1970. The Los Angeles area is an example of how O3 can be a public health hazard and taint a city’s aesthetics and quality of life through photochemical smog. This study was conducted to observe the overall effectiveness of the CAA. I explored daily O3 concentrations from 1980 to the present at three air quality monitoring stations in LA from the AirData database of the U.S. Environmental Protection Agency. National O3 standards were only exceeded …