Faculty Research Associate
Department of Geological Sciences
Arizona State University
Tempe, Arizona 85287-1404
Estimation of available microbial energy in real and artificial systems Predicting habitability through quantification of energy supply and demand Microbial ecology and astrobiological implications of chemically-fueled microbial ecosystems Isolation, physiology, and phylogeny of thermophilic Archaea Microbial ecology at the microscale Subsurface microbiology Use of microbes as geochemical tracers
2000 Ph.D., University of Washington, School of Oceanography. Advisor Dr. John Baross. Title: Ecology, Physiology, and Phylogeny of Subseafloor Thermophiles from Mid-Ocean Ridge Environments.
1990 B.S., Biology, Massachusetts Institute of Technology, Boston, MA.
present Faculty Research Associate, Arizona State University
Postdoctoral Associate, Washington University geochemical modeling with Dr. Everett Shock
Honors And Awards
2000 Ridge Postdoctoral Fellowship recipient
1998 American Society for Microbiology Student Poster Merit Award
1991-94 National Science Foundation graduate fellowship recipient
Publications in Refereed Journals
Melanie has published as both Holland and Summit
Shock, EL and ME Holland. in press. Geochemical energy sources supporting the subsurface biosphere. In: The Subsurface Biosphere at Mid-Ocean Ridges, WSD Wilcock, C Cary, E DeLong, DS Kelley, JA Baross, eds. AGU Press.
Zierenberg, RA and ME Holland. in press. Sedimented ridges as a laboratory for exploring the subsurface biosphere. In: The Subsurface Biosphere at Mid-Ocean Ridges, WSD Wilcock, C Cary, E DeLong, DS Kelley, JA Baross, eds. AGU Press.
Holland, ME, JA Baross, and JF Holden. in press. Illuminating subseafloor ecosystems using microbial tracers. In: The Subsurface Biosphere at Mid-Ocean Ridges, WSD Wilcock, C Cary, E DeLong, DS Kelley, JA Baross, eds. AGU Press.
Holland, ME and JA Baross. 2003. Limits to life in hydrothermal systems. In: Mass and Energy Transfer in Hydrothermal Systems (Proceedings of the 89th Dahlem Workshop), PE Halbach, V Tunnicliffe, and JR Hein, eds. Dahlem University Press, Berlin, pp. 235-248.
Tunnicliffe, V, JA Baross, AV Gebruk, O Giere, ME Holland, A Koschinsky,A-L Reysenbach, and TM Shank. Group report: What are the interactions between biotic processes at vents and physical, chemical, and geological conditions? In: Mass and Energy Transfer in Hydrothermal Systems (Proceedings of the 89th Dahlem Workshop), PE Halbach, V Tunnicliffe, and JR Hein, eds. Dahlem University Press, Berlin, pp. 252-270.
Holden, JF, K Takai, M Summit, S Bolton, J Zyskowski, and JA Baross. 2001. Diversity among three novel groups of hyperthermophilic deep-sea Thermococcus species from three sites in the northeastern Pacific Ocean. FEMS Microbiol. Ecol. 36:51-60.
Summit, M and JA Baross. 2001. A novel microbial habitat in the mid-ocean ridge subseafloor. Proc. Nat. Acad. Sci. USA. 98: 2158-2163.
Summit, M., A. Peacock, D. Ringelberg, D.C. White, and J.A. Baross. 2000. Microbial biomass and community composition in hot, hydrothermally influenced sediments from Middle Valley, Juan de Fuca Ridge. Proc. ODP Sci. Results Leg 169. CD-ROM, Ocean Drilling Program, College Station.
Summit, M. and J. A. Baross. 1998. Thermophilic subseafloor microorganisms from the 1996 North Gorda Ridge eruption. Deep-Sea Research, Part II, 45:2751-2766.
Summit, M., B. Scott, K. B. Nielson, E. Mathur and J. A. Baross. 1998. Pressure stabilization of DNA polymerase from three thermophilic organisms. Extremophiles, 2:339-345.
Cragg, B.A., M. Summit, and R.J. Parkes. 2000. Bacterial Profiles in a Sulfide Mound (Site 1035) and an Area of Active Fluid Venting (Site 1036) in Hot Hydrothermal Sediments from Middle Valley (Northeast Pacific). Proc. ODP Sci. Results Leg 169. CD-ROM, Ocean Drilling Program, College Station.
Delaney, J.R., D.S. Kelley, M.D. Lilley, D.A. Butterfield, J.A. Baross, W.S.D. Wilcock, R.W. Embley, and M. Summit. 1998. The quantum event of oceanic crustal accretion: Impacts of diking at mid-ocean ridges. Science 281:222-230.
Holden, J. F., M. Summit and J. A. Baross. 1998. Thermophilic and hyperthermophilic microorganisms in 3-30öC hydrothermal fluids following a deep-sea volcanic eruption. FEMS Microbiology and Ecology, 25(1): 33-41.
Juniper, S.K., D.F. Bird, M. Summit, M.P. Vong, and E.T. Baker. 1998. Viral and bacterial dynamics in hydrothermal event plumes over northern Gorda Ridge. Deep-Sea Research, Part II. 45:2739-2749.