Christopher A. Scholin

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Planktonic microbial activity and community structure is dynamic, and can change dramatically on time scales of hours to days. Yet for logistical reasons, this temporal scale is typically under-sampled in the marine environment. In order to facilitate higher-resolution, long-term observation of microbial diversity and activity, we developed a protocol for(More)
Planktonic microbial communities in the ocean are typically dominated by several cosmopolitan clades of Bacteria, Archaea, and Eukarya characterized by their ribosomal RNA gene phylogenies and genomic features. Although the environments these communities inhabit range from coastal to open ocean waters, how the biological dynamics vary between such disparate(More)
Planktonic marine microbes live in dynamic habitats that demand rapid sensing and response to periodic as well as stochastic environmental change. The kinetics, regularity, and specificity of microbial responses in situ, however, are not well-described. We report here simultaneous multitaxon genome-wide transcriptome profiling in a naturally occurring(More)
Oscillating diurnal rhythms of gene transcription, metabolic activity, and behavior are found in all three domains of life. However, diel cycles in naturally occurring heterotrophic bacteria and archaea have rarely been observed. Here, we report time-resolved whole-genome transcriptome profiles of multiple, naturally occurring oceanic bacterial populations(More)
Pseudo-nitzschia austrulis Frenguelli is a marine pennatc diatom associated with the production of domoic acid-a neurocxcitatory amino acid linked to illness and mortality of humans and wildlife, Distinguishing P. austrulis from its co-occurring congeners is labor intensive and time consuming because of a requirement for scanning electron microscopy. Hcrc,(More)
A recent shift from using traditional light microscopy to molecular approaches for identifying and quantifying marine harmful algal bloom (HAB) species has been driven by the need to expedite sample processing for both research and monitoring purposes (Anderson 1995; Scholin et al. 2003). In addition, light microscopy does not always afford sufficient(More)
The Environmental Sample Processor (ESP) is a device that allows for the underwater, autonomous application of DNA and protein probe array technologies as a means to remotely identify and quantify, in situ, marine microorganisms and substances they produce. Here, we added functionality to the ESP through the development and incorporation of a module capable(More)
Coastal ocean red tide blooms can cause significant harm to marine life, human health and economic activity 4. Understanding initiation of red tides is exceptionally difficult owing to the complexities of coastal environments and red tide ecology 5,6. Here we apply an unprecedented array of observations from satellite, aircraft, ship and mooring platforms(More)
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