Directory of People

Rob Wheatcroft

Rob Wheatcroft photo
Rohm Professor of Oceanographic Education
Program Head, Ocean Science and Earth Systems

Discipline: Ocean Ecology and Biogeochemistry
Secondary Discipline: Geology and Geophysics
Office: Burt 218
Phone: 541-737-3891
Fax: 541-737-2064
Email: raw@coas.oregonstate.edu

Specialty

Program Head for the undergraduate Earth Sciences: Ocean Science degree. Students interested in this option should contact me or one of the CEOAS undergraduate advisors.

Research Interests

Clastic sedimentology and stratigraphy; sediment transport; seafloor properties; coastal oceanography; early diagenesis; bioturbation.

Current Research

Land - ocean connectivity from event to millennial time scales. Sediment and carbon fluxes from small, mountainous rivers. Stratigraphic fidelity. Estuarine and continental margin sedimentation in the Pacific Northwest and elsewhere. Carbon burial.

Education

B.A., Geology, The College of Wooster
M.S., Geology, University of Georgia
Ph.D., Oceanography, University of Washington

Postdoctoral Scholar, Woods Hole Oceanographic Institution

Courses

Bold = currently taught

OC 201 - Oceanography. This course is a 4-credit baccalaureate core course for physical sciences with lab.  It is intended for students interested in learning about how the ocean works and serves as the starting point for the Ocean Science degree program.  It is offered Fall and Winter terms and as an e-campus version in Spring.  I teach it winter term.

OC 295 - Introduction to Field Oceanography.  This course is a new one that is held mainly during Spring Break (the course itself is officially in winter term).  This year we will be going on a 5-day cruise aboard the RV Oceanus to undertake a multidisicplinary study of a to-be-determined aspect of the Oregon margin.  OC 201 or OC 331 or OC 332  are enforced prerequisites  

OC 333 - Oceans, Coasts and People. This course examines in lecture and discussion how humans interact with the ocean and vice versa. Topics include sea level rise, ocean acidification, iron fertilization, hypoxia, melting Arctic sea ice and more.  These are important topics that provide context for anyone living in the 21st century.  It will be offered Fall term starting in 2016.

OC 440 - Introduction to Biological Oceanography. This course is now taught in during Spring term by Drs. Lorenzo Ciannelli (even years) or Yvette Spitz (odd years)]

OEAS 500 - Cascadia Field Course. This course is a week-long tour of the Pacific NW that examines facets of the geology, climate, ecology and oceanography of Cascadia, as well as regional resource conflicts.  We start in the Columbia River gorge and end up on the coast, with stops at Mount St. Helens and the Oregon Coast Range between.

OEAS 520 - The Solid Earth. (co-instructor with Dr. Anthony Koppers) This course is an introduction to earth science for graduate students entering the MRM and OEAS programs at OSU. Although it mostly covers marine geology, we do talk about whole planet and terrestrial processes as well.  It is part of the CEOAS 'Three Earth' sequence and is taught in the Fall.

OC 648 - Marine Benthic Ecology. This course has been discontinued. Much of the material is now covered in OC 657, Sediment Biogeochemistry, taught by Clare Reimers in Winter term of odd years.

Publications

Nittrouer, CA, B Raubenheimer & RA Wheatcroft. 2013. Lessons learned from comparisons of mesotidal sand- and mudflats. Continental Shelf Research 60S: S1-S12. http://dx.doi.org/10.1016/j.csr.2013.03.003

Law, BA, TG Milligan, PS Hill, J Newgard, RA Wheatcroft & PL Wiberg. 2013. Bed sediment texture on the Shoalwater Bay tidal complex, Willapa Bay: role of flocculation. Continental Shelf Research 60S: S136-S144.  http://dx.doi.org/10.1016/j.csr.2012.06.007

Wheatcroft, RA, R Sanders & BA Law. 2013. Physical and biological factors influencing the seasonal variation in sediment strength in a tidal flat complex, Willapa Bay, WA. Continental Shelf Research 60S: S173-S184. http://dx.doi.org/10.1016/j.csr.2012.07.022

Wiberg, PL, RA Wheatcroft, PS Hill, TG Milligan, BA Law & J Newgard. 2013. Sediment erodibility on a tidal flat – channel complex in southern Willapa Bay, WA. Continental Shelf Research 60S: S185-S197. http://dx.doi.org/10.1016/j.csr.2012.07.021

Barry, MA, BD Johnson, BA Law, V Page, BP Boudreau, PS Hill & RA Wheatcroft. 2013.Sedimentary and geo-mechanical properties of Willapa Bay tidal flats. Continental Shelf Research 60S: S198-S207.  http://dx.doi.org/10.1016/j.csr.2012.05.007

Wheatcroft, RA, MA Goñi, KN Richardson & JC Borgeld. 2013. Natural and human impacts on centennial sediment accumulation patterns on the Umpqua River margin, Oregon. Marine Geology 339: 44-56. http://dx.doi.org/10.1016/j.margeo.2013.04.015

Warrick, JA, MA Madej, MA Goñi & RA Wheatcroft. 2013. Trends in the suspended-sediment yields of coastal rivers of northern California, 1955-2010. Journal of Hydrology489: 108-123. http://dx.doi.org/10.1016/j.jhydrol.2013.02.041 

Roy, M, J McManus, MA Goñi, Z Chase, JC Borgeld, RA Wheatcroft, JM Muratli, MR Megowan & A Mix. 2013. Reactive iron and manganese distributions in seabed sediments near small mountainous rivers off Oregon and California, (USA). Continental Shelf Research54: 67-79. http://dx.doi.org/10.1016/j.csr.2012.12.012 

Goñi, MA, JA Hatten, RA Wheatcroft & JC Borgeld. 2013. Particulate organic matter export by two contrasting small mountainous river systems from th Pacific Northwest, USA. Journal of Geophysical Research: Biogeosciences 118: 1-23, http://dx.doi.org/10.1002/jgrg.20024

Warrick, JA, JA Hatten, GB Pasternack, AB Gray, MA Goñi & RA Wheatcroft. 2012. The effects of wildfire on the sediment yield of a coastal California watershed. Geological Society of America Bulletin124: 1130-1146. http://dx.doi.org/10.1130/B30451.1

Hastings, RH, MA Goñi, RA Wheatcroft & JC Borgeld. 2012. A terrestrial organic matter depocenter on a high-energy margin: The Umpqua River system, Oregon. Continental Shelf Research39-40: 78-91. http://dx.doi.org/10.1016/j.csr.2012.04.002 

Tesi, T, L Langone, MA Goñi, RA Wheatcroft, S Miserocchi & L Bertotti. 2012. Compositional changes of sedimentary organic matter from a 100-yr flood deposit. Geochimica et Cosmochimica Acta83: 19-36. http://dx.doi.org/10.1016/j.gca.2011.12.026

Hatten, JA., MA Goñi & RA Wheatcroft. 2012. Chemical characteristics of particulate organic matter from a small, mountainous river in the Oregon Coast Range, USA. Biogeochemistry107: 43-66. http://dpo/dx.org/10.1007/s10533-010-9529-z

Kniskern, T, JA Warrick, KL Farnsworth, RA Wheatcroft & MA Goñi. 2011. Coherence of river and ocean conditions along the US West Coast during storms. Continental Shelf Research31: 789-805. http://doi.dx.org/10.1016/j.csr.2011.01.012 

Watson, EB, K Wasson, GB Pasternack, A Woolfolk, E van Dyke, AB Gray, A Pakenham, & RA Wheatcroft. 2011. Applications of paleoecology to environmental management and restoration in a dynamic coastal environment. Restoration Ecology19: 765-775. http://doi.dx.org/10.1111/j.1526-100X.2010.00722.x

Wheatcroft, RA, MA Goñi, JA Hatten, GB Pasternack & JA Warrick. 2010. The role of effective discharge in the ocean delivery of particulate organic carbon by small, mountainous river systems. Limnology and Oceanography 55: 161-171. http://aslo.org/lo/toc/vol_55/issue_1/0161.pdf

Law, BL, PS Hill, TG Mlligan, KJ Curran, PL Wiberg & RA Wheatcroft. 2008. Size sorting of fine-grained sediments during erosion: results from the western Gulf of Lions. Continental Shelf Research 28: 1935-1946.

Wheatcroft, RA, RV Johnson & AW Stevens. 2007. In situ time-series measurements of sub-seafloor sediment properties. IEEE Journal of Oceanic Engineering 32: 862-871.

Sommerfield, CK & RA Wheatcroft. 2007. Late Holocene sediment accumulation on the northern California shelf: Oceanic, fluvial and anthropogenic influences. Geological Society of America Bulletin 119: 1120-1134.

Hill, PS, 10 others & RA Wheatcroft. 2007.  Sediment delivery to the seabed on the Eel River continental margin.  In: Continental Margin Sedimentation: From Sediment Transport to Sequence Stratigraphy,   CA Nittrouer  et al. (eds.), IAS Special Pub. 37, Blackwell Publishing, pp. 50-99.

Wheatcroft, RA et al. 2007. Post-depositional alteration and preservation of sedimentary strata. In: Continental Margin Sedimentation: From Sediment Transport to Sequence Stratigraphy, CA Nittrouer et al. (eds.), IAS Special Pub. 37, Blackwell Publishing, pp. 101-155.

Sommerfield, CK, 7 others & RA Wheatcroft. 2007. Oceanic dispersal and accumulation of river sediment. In: Continental Margin Sedimentation: From Sediment Transport to Sequence Stratigraphy, CA Nittrouer  et al. (eds.), IAS Special Pub. 37, Blackwell  Publishing, pp. 157-212.

Stevens, AW RA Wheatcroft & PL Wiberg. 2007. Seabed properties and sediment erodibility along the western Adriatic margin, Italy. Continental Shelf Research 27: 400-416.

Wheatcroft, RA 2006. Time-series measurements of macrobenthos and bioturbation intensity on a flood-dominated continental shelf, northern California. Progress in Oceanography 71: 88-122.

Wheatcroft, RA, AW Stevens, LM Hunt & TG Milligan. 2006. The large-scale distribution and internal geometry of the fall 2000 Po River flood deposit: Evidence from digital x-radiography. Continental Shelf Research 26: 499-516.

Wheatcroft, RA & CK Sommerfield. 2005. River sediment flux and shelf accumulation rates on the Pacific Northwest margin. Continental Shelf Research 25: 311-332.

Palinkas, CM, CA Nittrouer, RA Wheatcroft & L Langone. 2005.The use of 7Be to identify event and seasonal sedimentation near the Po River delta, Adriatic Sea. Marine Geology 222/223: 95-112

Wheatcroft, RA & DE Drake. 2003. Post-depositional alteration and preservation of sedimentary event layers on continental margins, I. The role of episodic sedimentation. Marine Geology 199: 123-137.

Decho, AW, T Kawaguchi, MA Allison, EM Louchard, RP Reid, C Stephens, KJ Voss, RA Wheatcroft & BB Taylor. 2003. Sediment properties influencing upwelling spectral reflectance signatures: The “biofilm gel effect” Limnology and Oceanography 48: 431-443.

Wheatcroft, RA 2002. In situ measurements of near-surface porosity in shallow-water marine sands. IEEE Journal of Oceanic Engineering 27: 561-570.

Sommerfield, CK, DE Drake & RA Wheatcroft. 2002. Shelf record of climatic changes in flood magnitude and frequency, north-coastal California. Geology 30: 395-398.

Goff, JA, RA Wheatcroft, H Lee, DE Drake, DJP Swift & S Fan. 2002. Spatial variability of shelf sediments in the STRATAFORM natural laboratory, northern California. Continental Shelf Research 22: 1199-1223.

Sherwood, CR, DE Drake, PL Wiberg & RA Wheatcroft. 2002. Prediction of the fate of p,p’-DDE in sediment on the Palos Verdes shelf, California, USA. Continental Shelf Research 22: 1025-1058.

Richardson, ML, 38 other authors & RA Wheatcroft. 2001. An overview of SAX99: Environmental considerations. IEEE Journal of Ocean Engineering 26: 26-53.

Sternberg, RW, K Aagaard, D Cacchione, RA Wheatcroft, RA Beach, AT Roach & MAH Marsden. 2001. Long-term near-bed observations of velocity and hydrographic properties in the northwest Barents Sea with implications for sediment transport. Continental Shelf Research 21: 509-529.

Fries, JS, CA Butman & RA Wheatcroft. 2000. Ripple formation induced by biogenic mounds-reply. Marine Geology 168: 153-155

Wheatcroft, RA 2000. Oceanic flood sedimentation: A new perspective. Continental Shelf Research 20: 2059-2066.

Wheatcroft, RA & JC Borgeld. 2000. Oceanic flood deposits on the northern California shelf: Large-scale distribution and small-scale physical properties. Continental Shelf Research 20: 2163-2190.

Fries, JS, CA Butman & RA Wheatcroft. 1999. Ripple formation induced by biogenic mounds. Marine Geology 159: 289-303.

Wheatcroft, RA, VS Starczak & CA Butman. 1998. The impact of population abundance on the deposit-feeding rate of a cosmopolitan polychaete worm. Limnology and Oceanography 43: 1948-1953.

Wheatcroft, RA, CK Sommerfield, DE Drake, JC Borgeld & CA Nittrouer. 1997. Rapid and widespread dispersal of flood sediment on the northern California margin. Geology 25: 163-166.

Wheatcroft, RA & CA Butman. 1997. Spatial and temporal variability in aggregated grain-size distributions, with implications for sediment dynamics. Continental Shelf Research 17: 367-390.

Wheatcroft, RA & WR Martin. 1996. Spatial variation in short-term (Th-234) sediment bioturbation intensity along an organic carbon gradient. Journal of Marine Research 54: 763-792.

Wheatcroft, RA, I Olmez & FX Pink. 1994. Particle bioturbation in Massachusetts Bay: Preliminary results using a new deliberate tracer technique. Journal of Marine Research 52: 1129-1150.

Olmez, I, FX Pink & RA Wheatcroft. 1994. New particle labeling technique for use in biological and physical sediment transport studies. Environmental Science and Technology 28: 1487-1490.

Wheatcroft, RA 1994. Temporal variation in bed configuration and one-dimensional bottom roughness at the mid-shelf STRESS site. Continental Shelf Research 14: 1167-1190.

Wheatcroft, RA 1992. Experimental tests for particle-size dependent bioturbation rates in the deep ocean. Limnology and Oceanography 37: 90-104.

Wheatcroft, RA 1991. Conservative tracer study of horizontal sediment mixing rates in a bathyal basin, California borderland. Journal of Marine Research 49: 565-588.

Jumars, PA, LM Mayer, JW Demming, JA Baross & RA Wheatcroft. 1990. Deep-sea deposit-feeding strategies suggested by environmental and feeding constraints.  Philosophical Transactions of the Royal Society London, Ser. A 331: 85-101.

Wheatcroft, RA 1990. Preservation potential of sedimentary event layers. Geology 18: 843-845

Wheatcroft, RA, PA Jumars, CR Smith & ARM Nowell. 1990. A mechanistic view of the particulate biodiffusion coefficient: Step lengths, rest periods and transport directions. Journal of Marine Research 48: 177-207.

Smith, CR, H Kukert, RA Wheatcroft, PA Jumars & JW Demming. 1989. Vent fauna on whale remains. Nature 341: 27-28.

Jumars, PA & RA Wheatcroft. 1989. Responses of benthos to changing food quality and quantity, with a focus on deposit feeding and bioturbation. In: Productivity of the Ocean: Present and Past. W.H. Berger et al. (eds.), Wiley, NY, pp. 235-253.

Wheatcroft, RA 1989. Characteristic trace-fossil associations in oxygen poor sedimentary environments: A comment. Geology 17: 674-675.

Frey, RW & RA Wheatcroft. 1989. Organism-substrate relations and their impact on sedimentary petrology. Journal of Geological Education 37: 261-279.

Wheatcroft, RA, CR Smith & PA Jumars. 1989. Dynamics of surficial trace assemblages in the deep sea. Deep-Sea Research 36: 71-91

Wheatcroft, RA & PA Jumars. 1987. Statistical re-analysis for size dependency in deep-sea mixing. Marine Geology 77: 157-163.

Wheatcroft, RA 1986. Maestrichtian trace fossils from selected localities in the Chattahoochee River valley. In: American Association of Petroleum Geologists Field Guide 3, J Reinhardt (ed.), pp. 57-70.

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