Aerobic anoxygenic phototrophic (AAP) bacteria are photoheterotrophic microbes that are found in a broad range of aquatic environments. Although potentially significant to the microbial ecology and biogeochemistry of marine ecosystems, their abundance, genetic diversity and the environmental variables that regulate these properties are poorly understood. Using samples along nearshore/offshore transects from five disparate islands in …
Earlier the Johnson Lab published a suite of methods for measuring the concentrations of major nutrients in freshwater and seawater using a microplate reader (J. Environ. Monit., 2011, 13, 370-376). We have recently updated that protocol and have posted a complete list of reagents and their concentrations used on the Journal of Environmental Monitoring website. …
We completed a transect through the Western Pacific Warm Pool to examine how environmental variables may influence viral and bacterial abundance and production rates in this globally important oceanic region. Of the variables analyzed, viral abundance and production had the most significant relationship to bacterial cell abundance: viral parameters were not significantly correlated to the …