Organic matter in aquatic environments

I have examined the composition of organic matter in multiple aquatic environments, ranging from the deep ocean to groundwater. This work began when I was a postdoc in Liz Kujawinski's laboratory and most recently involved examining dissolved organic carbon in the northwestern Sargasso Sea.

Selected publications

Longnecker, K., Kido Soule, M. C., Swarr, G. J., Parsons, R., Liu, S., Johnson, W. M., Widner, B., Curry, R., Carlson, C. A., Kujawinski, E. B., 2024. Seasonal and daily patterns in known dissolved metabolites in the northwestern Sargasso Sea. Limnol. Oceanogr. 69(3), 449-466. doi: 10.1002/lno.12497 (link to publication).

Longnecker, K., L. Oswald, M. C. K. Soule, G. A. Cutter, and E. B. Kujawinski. (2020). Organic sulfur: a spatially variable and understudied component of marine organic matter. Limnology and Oceanography Letters. 5: 305-312 (link to publication)

Longnecker, K. and E. B. Kujawinski (2020). Intracellular metabolites in marine microorganisms during an experiment evaluating microbial mortality. Metabolites 10: 105. (link to publication)

Longnecker, K., Sievert, S. M., Sylva, S. P., Seewald, J. S., & Kujawinski, E. B. (2018). Dissolved organic carbon compounds in deep-sea hydrothermal vent fluids from the East Pacific Rise at 9º50’N. Organic Geochemistry 125: 41-49 (link to publication)

Longnecker, K. and E. B. Kujawinski (2017). Mining mass spectrometry data: Using new computational tools to find novel organic compounds in complex environmental mixtures. Organic Geochemistry 110:92-99 (link to publication)

Longnecker, K. and E. B. Kujawinski (2016). Using network analysis to discern compositional patterns in ultrahigh resolution mass spectrometry data of dissolved organic matter. Rapid Communications in Mass Spectrometry 30: 2388-2394. (link to publication)

Longnecker, K. and E.B. Kujawinski (2011). Composition of dissolved organic matter in groundwater. Geochimica et Cosmochimica Acta 75: 2752-2761 (link to publication)