2002, B.S. in Aquatic Biology, University of California, Santa Barbara
Phytoplankton and zooplankton ecology and physiology, food web dynamics, physical-biological coupling, biogeochemical cycling, ocean acidification, climate change
My broad research interests are in the fields of marine plankton ecology, food web dynamics, biogeochemical cycling, and vertical particle flux with focus on how climate change, including ocean acidification, impacts these processes. The main emphasis of my current research at Rutgers University is to identify what triggers changes in algal abundance, composition, physiology, and overall quality, and how this affects higher trophic levels (zooplankton, fish) and nutrient feedback processes. I have recently conducted a combination of laboratory experiments and field research to determine the effects of increased carbon dioxide (CO2) on krill physiology, phytoplankton communities and biogeochemical cycling in the Western Antarctic Peninsula (WAP) region. My other research interests are focused toward: 1) understanding how large scale forcing and physical factors drive phytoplankton blooms and krill recruitment in the WAP region; 2) determining physiological mechanisms and biological pathways that WAP phytoplankton use to adapt to various environmental stressors; and 3) using a collaboration of ocean observatories (gliders, satellite receiving station, and HF radar network) and traditional field sampling to study the physical regulation of the Mid-Atlantic Bight winter bloom, the largest and most predictable seasonal phytoplankton bloom in this region – all of which use an interdisciplinary approach to solving ecologically important, complex problems.
Saba, G.K., Schofield, O., Torres, J.J., Ombres, E.H., and D.K. Steinberg. 2012. Increased feeding and nutrient excretion of adult Antarctic krill, Euphausia superba, exposed to enhanced carbon dioxide (CO2). PLoS ONE: doi:10.1371/journal.pone.0052224.
Schofield, O., Kohut, J., Saba, G., Yi, X., Wilkin, J., and S. Glenn. Ocean observing and prediction. In: Y.Q. Wang, ed., Encyclopedia of Natural Resources. Taylor Francis, New York City (in press).
Saba, G.K., and D.K. Steinberg. 2012. Abundance, composition, and sinking rates of fish fecal pellets in the Santa Barbara Channel. Scientific Reports 2: doi:10.1038/srep00716.
Saba, G.K., Steinberg, D.K., and D.A. Bronk. 2011. The relative importance of sloppy feeding, excretion, and fecal pellet leaching in the release of dissolved carbon and nitrogen by Acartia tonsa copepods. Journal of Experimental Marine Biology and Ecology 404: 47-56.
Saba, G.K., Steinberg, D.K., Bronk, D.A., and A.R. Place. 2011. The effects of harmful algal species and food concentration on zooplankton grazer production of dissolved organic matter and inorganic nutrients. Harmful Algae 10: 291-303.
Saba, G.K., Steinberg, D.K., and D.A. Bronk. 2009. Effects of diet on release of dissolved organic and inorganic nutrients by the copepod Acartia tonsa. Marine Ecology Progress Series 386: 147-161.
Steinberg, D.K. and G.K. Saba. 2008. Nitrogen consumption and metabolism in marine zooplankton. In: Capone, D.G., Bronk, D.A., Mulholland, M.R., and E.J. Carpenter, eds., Nitrogen in the Marine Environment, 2nd Edition. Academic Press, Boston. p 1135-1196.
Goldthwait, S.A., Carlson, C.A., Henderson, G.K., and A.L. Alldredge. 2005. Effects of physical fragmentation on remineralization of marine snow. Marine Ecology Progress Series 305: 59-65.
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