M, W 1:00 - 3:00
David Shull received degrees in oceanography from the University of Washington (B.S.) and the University of Connecticut (M.S.), and a degree in environmental science from the University of Massachusetts Boston (Ph.D., 2000). Afterward, he was a research associate at the University of Maine's Darling Marine Center and an assistant professor of biology at Gordon College before coming to Western in 2004. Dr. Shull studies invertebrate communities in estuaries and continental shelf sediments. He is particularly interested in the roles that benthic organisms play in the function of coastal ecosystems. He has studied the effects of benthic organisms on the fate of contaminants in coastal waters, the role of deposit feeders in the initiation of harmful algal blooms (red tide), and the effects of tube-building organisms on concentrations of methyl mercury in sediments. Currently he is studying benthic organisms and nutrient cycling in the sediments of the Bering Sea and the effects of sediment pore-water hydrogen sulfide on the growth and survival of eelgrass, Zostera japonica.
Although the vast majority of the earth's solid surface is covered in marine mud and benthic organisms thus inhabit the largest habitat on the earth's solid surface, there is much to be learned about the ecological and functional roles these bottom dwellers play in the ocean. An important theme in my research is "bioturbation", the effects of benthic organism feeding, burrowing, and burrow ventilation on marine sediment properties. I have studied benthic communities in Puget Sound, Boston Harbor, the North Atlantic, and the Bering Sea. My current research focus is on eelgrass in Puget Sound and how it influences and is influenced by sediment pore-water hydrogen sulfide.
Some recent publications from my lab:
Shull, D.H., A. Kremp, and L.M. Mayer. 2014. Bioturbation, germination and deposition of Alexandrium fundyense cysts in the Gulf of Maine. Deep-Sea Res. II 103, 66–78.
Cross, J.N. et al. 2014. Integrated assessment of the carbon budget in the southeastern Bering Sea. Deep-Sea Res. II., in press
Esch, M.E.S., D. H. Shull, A.H. Devol.2013. Regional patterns of bioturbation and iron and manganese reduction in the sediments of the southeastern Bering Sea. Deep- Sea Res. II. 94, 80-94
Davenport, E.S., D.H. Shull, A.H. Devol. 2012. Roles of sorption and tube-dwelling benthos in the cycling of phosphorus in Bering Sea sediments. Deep-Sea Research II 65-70: 163-172.
Shull, D.H., J.M. Benoit, C. Wojcik, and J.R. Senning. 2009. Infaunal burrow ventilation and pore-water transport in muddy sediments. Est. Coast. and Shelf Sci. 83, 277-286.
Benoit, J.A., D.H. Shull, R.M. Harvey, and S.A. Beal. 2009. Effect of bioirrigation on sediment-water exchange of methylmercury in Boston Harbor, Massachusetts, Environ. Sci. Technol. 43, 3669-3674.
Shull, D.H. 2009. Bioturbation, in, J.H. Steele, S.A. Thorpe, K.K. Turekian (Eds.), Encyclopedia of Ocean Sciences. Elsevier, Ltd.
PhD Environmental Science, University of Massachusetts-Boston; MS Oceanography, University of Connecticut; BS Oceanography, University of Washington