Emily Bernhardt | Hubbard Brook

Duke University

Department of Biology

Durham, NC 27708

Phone:

919-660-7318

Email:

emily.bernhardt@duke.edu

Hubbard Brook Role:

Investigator

Research Interests:

Emily Bernhardt is a biogeochemist who has long been interested in the role that stream ecosystems play within watersheds in altering the form, timing and magnitude of nutrient exports. She conducted her dissertation research at HBEF in the 1990's, exploring the impacts of forest age, ice storms and carbon supply on stream nitrogen cycling. In the 2010's Emily began working at HBEF again. Bernhardt is now collaborating with Gene Likens, Emma Rosi, John Campbell and Lindsey Rustad in the maintenance of the long-term rain and stream chemistry record. New field research is exploring the impact of acid rain legacies and acid rain mitigation on watershed C and N cycling and the effect of warmer springs on the productivity of stream ecosystems.

Hubbard Brook Publications by this Author

2021

Likens, Gene E, Donald C Buso, Emily S Bernhardt, and Emma Rosi. 2021. “A Century Of Change: Reconstructing The Biogeochemical History Of Hubbard Brook”. Hydrological Processes 35(6): e14256. https://onlinelibrary.wiley.com/doi/abs/10.1002/hyp.14256.

Green, Mark B, Linda H Pardo, Scott W Bailey, John L Campbell, William H McDowell, Emily S Bernhardt, and Emma J Rosi. 2021. “Predicting High-Frequency Variation In Stream Solute Concentrations With Water Quality Sensors And Machine Learning”. Hydrological Processes 35(1): e14000. https://onlinelibrary.wiley.com/doi/abs/10.1002/hyp.14000.

Campbell, John L, Lindsey E Rustad, Scott W Bailey, Emily S Bernhardt, Charles T Driscoll, Mark B Green, Peter M Groffman, Gary M Lovett, William H McDowell, Kevin J McGuire, and Emma J Rosi. 2021. “Watershed Studies At The Hubbard Brook Experimental Forest: Building On A Long Legacy Of Research With New Approaches And Sources Of Data”. Hydrological Processes 35(1): e14016. https://onlinelibrary.wiley.com/doi/abs/10.1002/hyp.14016.

2018

Marinos, Richard E, John L Campbell, Charles T Driscoll, Gene E Likens, William H McDowell, Emma J Rosi, Lindsey E Rustad, and Emily S Bernhardt. 2018. “Give And Take: A Watershed Acid Rain Mitigation Experiment Increases Baseflow Nitrogen Retention But Increases Stormflow Nitrogen Export”. Environmental Science & Technology 52(22): 13155 - 13165. https://doi.org/10.1021/acs.est.8b03553.

Marinos, Richard E, and Emily S Bernhardt. 2018. “Soil Carbon Losses Due To Higher Ph Offset Vegetation Gains Due To Calcium Enrichment In An Acid Mitigation Experiment”. Ecology 99(10): 2363 - 2373. https://esajournals.onlinelibrary.wiley.com/doi/abs/10.1002/ecy.2478.

2016

Rosi-Marshall, Emma J, Emily S Bernhardt, Donald C Buso, Charles T Driscoll, and Gene E Likens. 2016. “Acid Rain Mitigation Experiment Shifts A Forested Watershed From A Net Sink To A Net Source Of Nitrogen”. Proceedings of the National Academy of Sciences 113(27): 7580 - 7583. http://www.pnas.org/lookup/doi/10.1073/pnas.1607287113.

2013

Sudduth, Elizabeth B, Steven S Perakis, and Emily S Bernhardt. 2013. “Nitrate In Watersheds: Straight From Soils To Streams?”. Journal of Geophysical Research: Biogeosciences 118(1): 291 - 302. http://onlinelibrary.wiley.com/doi/10.1002/jgrg.20030/abstract.

2008

Bernhardt, Emily S, and W. H McDowell. 2008. “Twenty Years Apart: Comparisons Of Dom Uptake During Leaf Leachate Releases To Hubbard Brook Valley Streams In 1979 Versus 2000”. J. Geophys. Res.-Biogeosciences 113(G3): GO3032.

2007

Fierer, N., J. L Morse, S. T Berthrong, Emily S Bernhardt, and R. B Jackson. 2007. “Environmental Controls On The Landscape-Scale Biogeography Of Stream Bacterial Communities”. Ecology 9: 2162-2173.

Warren, D. R, Emily S Bernhardt, R. O Hall, and Gene E Likens. 2007. “Forest Age, Wood And Nutrient Dynamics In Headwater Streams Of The Hubbard Brook Experimental Forest”. Earth Surface Processes and Landforms 32: 1154-1163.

2005

Bernhardt, Emily S, Gene E Likens, D. C Buso, R. O Hall, S. G Fisher, T. M Burton, J. L Meyer, W. H McDowell, M. S Mayer, W. B Bowden, S. EG Findlay, and K. H Macneale. 2005. “Can’T See The Forest For The Stream? In-Stream Processing And Terrestrial Nitrogen Exports”. BioScience 55(3): 219-230.

Warren, D. R, Emily S Bernhardt, R. O Hall, and Gene E Likens. 2005. “Factors Influencing Stream Nutrient Dynamics: Woody Debris And Forest Age”. ESA/INTECOL Meeting, August 2005.

2004

Likens, Gene E, D. C Buso, B. K Dresser, Emily S Bernhardt, R. O Hall, K. H Macneale, and Scott W Bailey. 2004. “Buffering An Acidic Stream In New Hampshire With A Silicate Mineral”. Restoration Ecology 12(3): 419-428.

Bernhardt, Emily S, R. O Hall, Gene E Likens, and D. C Buso. 2004. “Can Long-Term Change In Stream N Processing Affect Watershed N Exports? Bull. Ecol. Soc. Amer”.

Bernhardt, Emily S, and Gene E Likens. 2004. “Controls On Periphyton Biomass In Heterotrophic Streams”. Freshwater Biology 49(1): 14-27.

2003

Bernhardt, Emily S, Gene E Likens, D. C Buso, and Charles T Driscoll. 2003. “In-Stream Update Dampens Effects Of Major Forest Disturbance On Watershed Nitrogen Export”. Proceedings of National Academy of Sciences 100(18): 10304-10308.

Houlton, B. Z, Charles T Driscoll, Timothy J Fahey, Gene E Likens, Peter M Groffman, Emily S Bernhardt, and D. C Buso. 2003. “Nitrogen Dynamics In Ice Storm-Damaged Forest Ecosystems: Implications For Nitrogen Limitation Theory”. Ecosystems 6(5): 431-443.

2002

Bernhardt, Emily S, and W. H McDowell. 2002. “Changes In Streamwater Doc, Don And Din During Leaf Leachate Releases”. North Amer. Benthological Soc. 2002 Annual Meeting.

Stelzer, R. S, and Emily S Bernhardt. 2002. “A Comparison Of Open-Channel And Chamber Methods For Estimating Whole Stream Metabolism In A North Temperate Stream”. Abstract, American Society of Limnology and Oceanography Annual Meeting.

Bernhardt, Emily S, and Gene E Likens. 2002. “Dissolved Organic Carbon Enrichment Alters Nitrogen Dynamics In A Forest Stream”. Ecology 83(6): 1689-1700.

Bernhardt, Emily S. 2002. “Lessons From Kinetic Releases Of Ammonium In Streams Of The Hubbard Brook Experimental Forest”. Verh. Internat. Verein. Limnol. 28(1): 429-433.

Hall, R. O, Emily S Bernhardt, and Gene E Likens. 2002. “Relating Nutrient Uptake With Transient Storage In Forested Mountain Streams”. Limnol. Oceanogr. 47(1): 255-265.

Bernhardt, Emily S, R. O Hall, and Gene E Likens. 2002. “Whole-System Estimates Of Nitrification And Nitrate Uptake In Streams Of The Hubbard Brook Experimental Forest”. Ecosystems 5(5): 419-430.

2001

Hall, R. O, K. H Macneale, Emily S Bernhardt, M. Field, and Gene E Likens. 2001. “Biogeochemical Responses Of Two Forest Streams To A Two-Month Calcium Addition”. Freshwater Biology 46(3): 291-302.

Bernhardt, Emily S, R. O Hall, and J. L Tank. 2001. “Evaluating The Relationship Between Transient Storage And Nutrient Uptake In Streams”. Aquatic Sciences Meeting, American Society of Limnology and Oceanography, Feb. 2001.

Bernhardt, Emily S. 2001. “Lessons From Kinetic Releases Of Ammonium In Streams Of The Hubbard Brook Experimental Forest (Hbef)”. Abstract for Societas Internationalis Limnologiae: 57.

Bernhardt, Emily S. 2001. “Nutrient Demand And Nitrogen Processing In Streams Of The Hubbard Brook Experimental Forest”. Cornell University.

Bernhardt, Emily S. 2001. “Nutrient Demand And Nitrogen Processing In Streams Of The Hubbard Brook Experimental Forest”. Cornell University.

2000

Bernhardt, Emily S, and Gene E Likens. 2000. “Effects Of A Doc Addition On Stream Nitrogen Dynamics At The Hubbard Brook Experimental Forest (Hbef)”. Abstract for North American Benthological Society.

Bernhardt, Emily S, and Gene E Likens. 2000. “Effects Of A Two-Month Addition On Stream Nitrogen Dynamics At The Hubbard Brook Experimental Forest (Hbef)”. Abstract for Ecological Society of America.

Likens, Gene E, Emily S Bernhardt, D. C Buso, B. K Dresser, R. O Hall, and K. H Macneale. 2000. “Experimental Alkalinization Of A Stream Ecosystem At The Hubbard Brook Experimental Forest (Hbef)”. Abstract for LTER All Scientists Meeting.

Bernhardt, Emily S, R. O Hall, and Gene E Likens. 2000. “Instream Nitrification: Can It Explain (No3) In Stream Of The Hubbard Brook Experimental Forest?”. Abstract for Ecological Society of America.

1999

Bernhardt, Emily S, R. O Hall, and Gene E Likens. 1999. “Stream Nutrient Limitation Across A Range Of Forest Age In The Hubbard Brook Experimental Forest (Hbef), New Hampshire”. Abstracts for Ecological Society of America, 84th Annual Meeting: 228.

Hall, R. O, Emily S Bernhardt, and Gene E Likens. 1999. “Transient Storage And Nutrient Transport In Streams At The Hubbard Brook Experimental Forest”. Abstract for The North American Benthological Society.

1998

Bernhardt, Emily S, R. O Hall, K. H Macneale, and Gene E Likens. 1998. “Algal Assemblage Response To A Two-Month, Whole Stream Ph And Calcium Manipulation At The Hubbard Brook Experimental Forest”. Abstract for 46th Annual Meeting, Bull. North Amer. Benthol. Soc. 15(1):150.

Hall, R. O, K. H Macneale, Emily S Bernhardt, and Gene E Likens. 1998. “Calcium Transport And Storage During A Two-Month Calcium Addition To Two Forest Streams”. Abstracts, ASLO/ESA Meeting [Jointly sponsored, American Society of Limnology and Oceanography/Ecological Society of America], June 1998: A3.

Bowden, W. B, J. Merriam, J. L Tank, R. O Hall, K. H Macneale, Emily S Bernhardt, P. J Mulholland, J. R Webster, and B. Sichol. 1998. “The Hubbard Brook Linx Project: Nitrogen Transformations In A Northern Hardwood Forest Stream”. Bull. North Amer. Benthol. Soc. 15(1):126. Abstract for 46th Annual Meeting.

Macneale, K. H, R. O Hall, Emily S Bernhardt, and Gene E Likens. 1998. “Reduction In Emergence Of An Acid Tolerant Stonefly In Response To Elevated Ph And Calcium”. Bull. North Amer. Benthol. Soc. 15(1): 115.