Ph.D., Biology (Limnology), University of Pennsylvania, 1980
Organic matter biogeochemistry, aquatic microbial ecology and nutrient cycling, especially the characterization and quantification of biodegradable dissolved organic carbon and the structure of microbial communities in stream ecosystems.
Variation of organic matter quantity and quality in streams at Critical Zone Observatory watersheds. Miller, Matthew P., Boyer, Elizabeth W., McKnight, Diane M., Brown, Michael G., Gabor, Rachel S., Hunsaker, Carolyn T., Iavorivska, Lidiia, Inamdar, Shreeram, Johnson, Dale W., Kaplan, Louis A., Lin, Henry, McDowell, William H., Perdrial, Julia N. (2016): Water Resources Research, 52 (10): 8202–8216 Cross-CZO
The delivery of dissolved organic carbon from a forest hillslope to a headwater stream. Mei, Y. Hornberger, G., Kaplan, L. A., Newbold, J. D., & Aufdenkampe, A. K. (2014): Water Resources Research 50 (7): 5774–5796
Hydrologic dynamics and geochemical responses within a floodplain aquifer and hyporheic zone during Hurricane Sandy. Sawyer, A.H., L.A. Kaplan, O. Lazareva, and H.A. Michael (2014): Water Resources Research, 50 (6): 4877–4892
A coupled geochemical and biogeochemical approach to characterize the bioreactivity of dissolved organic matter from a headwater stream. Sleighter, R. L., R. M. Cory, L. A. Kaplan, H. A. N. Abdulla, and P. G. Hatcher (2014): Journal of Geophysical Research: Biogeochemistry 119 (8):1520-1537
Biological lability of dissolved organic carbon in stream water and contributing terrestrial sources. McLaughlin, C., and L. A. Kaplan (2013): Freshwater Science 32(4):1219-1230
Measuring heterotrophic respiration rates of suspended particulate organic carbon from stream ecosystems. Richardson, D. C., J. D. Newbold, A. K. Aufdenkampe, P. G. Taylor, and L. A. Kaplan (2013): Limnology and Oceanography-Methods 11:247-261
A variable source area for groundwater evapotranspiration: impacts on modeling stream flow. Tsang, Y.-P., Hornberger, G., Kaplan, L. A., Newbold, J. D. and Aufdenkampe, A. K. (2013): Hydrol. Process.
Biological lability of streamwater fluorescent dissolved organic matter. Cory, Rose M. and L. A. Kaplan (2012): Limnology and Oceanography, 57(5):1347–1360
Estimation of dissolved organic carbon contribution from hillslope soils to a headwater stream. Mei, Y., G. M. Hornberger, L. A. Kaplan, J. D. Newbold, and A. K. Aufdenkampe (2012): Water Resour. Res. 48(9)
The boundless carbon cycle. Battin, T. J., S. Luyssaert, L. A. Kaplan, A. K. Aufdenkampe, A. Richter, and L. J. Tranvik (2009): Nature Geoscience 2:598-600
Temporal dynamics of seston: A recurring nighttime peak and seasonal shifts in composition in a stream ecosystem. Richardson, D. C., L. A. Kaplan, J. D. Newbold, and A. K. Aufdenkampe (2009): Limnology and Oceanography 54:344-354
Biophysical controls on organic carbon fluxes in fluvial networks. Battin, T. J., L. A. Kaplan, S. Findlay, C. S. Hopkinson, E. Marti, A. I. Packman, J. D. Newbold, and F. Sabater (2008): Nature Geoscience 1:95-100
Biome-level biogeography of streambed microbiota. Findlay, R. H., C. Yeates, M. A. J. Hullar, D. A. Stahl, and L. A. Kaplan (2008): Applied and Environmental Microbiology 74:3014-3021
Untangling the complex issue of dissolved organic carbon uptake: a stable isotope approach. Kaplan, L. A., T. N. Wiegner, J. D. Newbold, P. H. Ostrom, and H. Gandhi (2008): Freshwater Biology 53:855-864
Recurring seasonal dynamics of microbial communities in stream habitats. Hullar, M. A. J., L. A. Kaplan, and D. A. Stahl (2006): Applied and Environmental Microbiology 72:713-722
Biodegradable dissolved organic matter in a temperate and a tropical stream determined from ultra-high resolution mass spectrometry. Kim, S., L. A. Kaplan, and P. G. Hatcher (2006): Limnology and Oceanography, 51:1054-1063
Contribution of dissolved organic carbon to stream metabolism estimated with 13C-enriched tree tissue leachate. Wiegner, T. N., L. A. Kaplan, J. D. Newbold, and P. H. Ostrom (2005): Journal North American Benthological Society 24:48-67
Riparian Deforestation, Stream Narrowing, and Loss of Stream Ecosystem Services. Sweeney, B. W., T. L. Bott, J. K. Jackson, L. A. Kaplan, J. D. Newbold, L.J. Standley, W. C. Hession, and R. J. Horwitz (2004): Proceedings of the National Academy of Sciences 101:14132-14137
Contributions of microbial biofilms to ecosystem processes in stream mesocosms. Battin, T. J., L. A. Kaplan, J. D. Newbold, and C. E. Hansen (2003): Nature 426:439-442
A mixing model analysis of stream solute dynamics and the contribution of a hyporheic zone to ecosystem function. Battin, T. J., L. A. Kaplan, J. D. Newbold, and S. P. Hendricks (2003): Freshwater Biology:48:995-1014
Effects of current velocity on the nascent architecture of stream microbial biofilms. Battin, T. J., L. A. Kaplan, J. D. Newbold, X. Cheng, and C. Hansen (2003): Applied and Environmental Microbiology. 63:5443-5452
The role of monomers in stream ecosystem metabolism. Kaplan, L. A., and J. D. Newbold (2003): Aquatic Ecosystems: Interactivity of Dissolved Organic Matter, pp. 97-119. S. E. G. Findlay and R. L. Sinsabaugh (eds.). Academic Press.
Where rivers are born: The scientific imperative for defending small streams and wetlands. Meyer, J. L., L. A. Kaplan, J. D. Newbold, D. L. Strayer, C. J. Woltemade, J. B. Zedler, R. Beilfuss, Q. Carpenter, R. Semlitsch, M.C. Watzin, and P. H. Zedler (2003): Sierra Club and American Rivers
Surface and subsurface dissolved organic carbon. Kaplan, L. A., and J. D. Newbold (2000): Streams and Ground Waters, J. B. Jones and P. J. Mulholland (eds.), pp. 237-258. Academic Press.
Organic matter dynamics in White Clay Creek, Pennsylvania, USA. Newbold, J. D., T. L. Bott, L. A. Kaplan, B. W. Sweeney, and R. L. Vannote (1997): Pages 46 - 50 in J. R. Webster and J. L. Meyers (editors). Stream organic matter budgets. Journal of the North American Benthological Society 16:3-161
Measurement of streamwater biodegradable dissolved organic carbon with a plug-flow bioreactor. Kaplan, L. A. and J. D. Newbold (1995): Water Research 29:2696-2706
Sources and biogeochemistry of terrestrial dissolved organic carbon entering streams. Kaplan, L. A., and J. D. Newbold (1993): pp. 139 - 165 in T. E. Ford, ed. Aquatic microbiology: an ecological approach. Blackwell Scientific
Papers and books that explicitly acknowledge a CZO grant are highlighted in PALE ORANGE.
The Christina River Basin Critical Zone Observatory (CRB-CZO): Quantifying carbon sequestration by integrating spatial and temporal carbon and mineral fluxes. J. Kan, D. Karwan, O. Lazareva, C. Rosier, A. Aufdenkampe, D. L. Sparks, L. A. Kaplan, J. Pizzuto, K. Yoo (2012): The 2nd International Conference of Geobiology-Critical Zone Observatories for sustainable soil development and beyond. Sept 4-8, 2012, Wuhan, China.
2012 CRB-CZO Annual Report to National Science Foundation. Sparks, D., Aufdenkampe, A., Kaplan, L., Pizzuto, J., and Yoo, K. (2012): NSF Award #0724971
A wireless environmental sensor network based on open-source electronics for the Christina River Basin CZO. Hicks, S., Aufdenkampe, A., Lazareva, O., Montgomery, D., Kaplan, L., Newbold, D., Levia, D., Sparks, D.L. (2011): CZO National Meeting, Tucson, Arizona
A 13C DOC tracer approach to estimate the contribution of semi- labile dissolved organic carbon to stream ecosystem metabolism. Kaplan, L.A., J. D. Newbold and A. K. Aufdenkampe. (2011): Goldschmidt 2011 conference, Prague, Czech Republic, August 14-19. p. 1147
2011 CRB-CZO Annual Report to National Science Foundation. Sparks, D., Aufdenkampe, A., Kaplan, L., Pizzuto, J., and Yoo, K. (2011): NSF Award #0724971
Christina River Basin Critical Zone Observatory (CRB-CZO): Wireless environmental sensor network. Sparks, D.L., Aufdenkampe, A., Lazareva, O., Hicks, S., Montgomery, D., Arscott, D., Kaplan, L., Newbold, D., Levia, D. (2011): University of Delaware on the Hill. Capitol Hill, Washington, DC, March.
Christina River Basin Critical Zone Observatory (CRB-CZO): Wireless environmental sensor network. Sparks, D.L., Aufdenkampe, A., Lazareva, O., Hicks, S., Montgomery, D., Arscott, D., Kaplan, L., Newbold, D., Levia, D. (2011): EPSCoR Annual Meeting, Dover, Delaware, April.
Christina River Basin CZO: Spatial and temporal integration of carbon and mineral fluxes: a whole watershed approach to quantifying anthropogenic modification of critical zone carbon sequestration. Aufdenkampe, A.K., D.L. Sparks, L.A. Kaplan, J.E. Pizzuto, K. Yoo (2010): Invited Talk at the quarterly meeting of the Christina River Basin Task Force, Dec. 3, Newark, DE
Advances in Understanding Watershed Processes with Real-time in-Situ Sensor Networks for Surface and Ground Water Properties. Aufdenkampe, A.K., J.D. Newbold, D. Arscott, L.A. Kaplan, M.S. Johnson (2010): Invited Talk at the Pennsylvania Water Symposium, May 6, State College, PA
Spatial And Temporal Integration Of Carbon And Mineral Fluxes: A Whole Watershed Approach To Quantifying Anthropogenic Modification Of Critical Zone Carbon Sequestration. Aufdenkampe, A.K., Sparks, D.L., Yoo, K., Kaplan, L. A., and Pizzuto, J.E. (2010): 3rd Annual National CZO PI meeting, Boulder, CO, September 13-15.
The Delivery Of Dissolved Organic Carbon From Forest Soils To A Head Water Stream . Mei, V., G.M. Hornberger, L. Kaplan, J. D. Newbold, A. K. Aufdenkampe. (2010): Abstract H53B-1031. AGU Fall Meeting, San Francisco, CA, December 13-17
2010 CRB-CZO Annual Report to National Science Foundation. Sparks, D., Aufdenkampe, A., Kaplan, L., Pizzuto, J., and Yoo, K. (2010): NSF Award #0724971
Protecting Headwaters: The scientific basis for safeguarding stream and river ecosystems. Kaplan, L. A., T. L. Bott, J. K. Jackson, J. D. Newbold, and B. W. Sweeney (2008): Stroud Water Research Center
Penn State Integrated Hydrological Model for Dissolved Organic Carbon
PIHM is a physically based, fully distributed hydrological model
Integrated one dimensional physically-based dissolved organic carbon model
A one-dimensional transport model for heat, and biodegradeable and refractory dissolved organic carbon in soils
Two-dimensional finite element model for hillslope DOC
Physically based model of water, heat, refractory DOC and biodegradable DOC transport on a 2D (vertical cross section) hillslope
26 Aug 2014 - The Critical Zone Observatory Research Experience for Undergraduates and Research Experience for Teachers program participants traveled to...
30 Aug 2012 - The European magazine, International Innovation Environment, published bi-annually, focused the August issue on "How science must lead the way to a...
18 Jan 2012 - International collaboration in critical zone science took a giant step forward in November when about 80 researchers from the U.S., Europe, China...
15 Dec 2011 - Donald Sparks, Anthony Aufdenkampe, and Lou Kaplan reveal their progress in understanding the complex interactions within the Earth's critical zone
22 Jun 2010 - The National Science Foundation’s Science360 daily news service website has posted a video that includes a segment on the Christina River...
19 Oct 2009 - The narrow creek that runs behind the Stroud Water Research Center has witnessed plenty of changes over the centuries. Hundreds of years ago,...
28 Sep 2009 - The University of Delaware, in collaboration with Stroud Water Research Center in Avondale, Pa., has received a $4.3 million grant from the National...