Erin Hanan

Assistant Professor, Fire & Ecosystem Ecology

Department: Natural Resources & Environmental Science
Office: 775-682-8147
Fax: 775-784-4227
Email: ehanan@unr.edu
Building: FA
Room: 239b
Mailstop: 186
Website: Erin Hanan's lab
Website: Twitter
Website: Research Gate
Website: Google Scholar

Summary

I study interactions among plant, soil, and hydrologic processes in terrestrial systems. Disturbances such as wildfire, insect outbreaks, and forest clearing, play an important role in these dynamics, and in many ecosystems, disturbance events are becoming more frequent and severe in response to climate change and growing human populations. I use process-based models, remote sensing, and empirical analysis to answer questions about how climate change will affect future disturbance regimes, how these shifts will alter biogeochemical and ecohydrologic processes, and how we can mitigate the effects of climate change through management.

Education

B.S. University of Southern California, 2004
M.S. Florida International University, 2008
Ph.D. University of California, Santa Barbara, 2015

Publications

Journals

Simulating the role of biogeochemical hotspots in driving nitrogen export from dryland watersheds

2024

Water Resources Research, 60(3): e2023WR036008

Ren J., Hanan E.J., Greene A., Tague C., Krichels A.H., Burke W.D., Schimel J.P., Homyak P.M.

Climate change and nitrogen (N) pollution are altering biogeochemical and ecohydrological processes in dryland watersheds, increasing N export, and threatening water quality. To better project future...

Antecedent Snowpack Cold Content Alters the Hydrologic Response to Extreme Rain-on-Snow Events

2023

J. Hydrometeor., 24, 1825–1846

Katz, L., G. Lewis, S. Krogh, S. Drake, E. Hanan, B. Hatchett, and A. Harpold

Bark Beetle Effects on Fire Regimes Depend on Underlying Fuel Modifications in Semiarid Systems

2023

Journal of Advances in Modeling Earth Systems, 15(1), e2022MS003073

Ren, J., Hanan, E. J., Hicke, J. A., Kolden, C. A., Abatzoglou, J. T., Tague, L., Bart, R. R., Kennedy, M. C., Liu, M., & Adam, J. C.

Effects of experimental nitrogen deposition on soil organic carbon storage in Southern California drylands

2023

Global Change Biology, 29(6), 1660-1679

Püspök, J. F., Zhao, S., Calma, A. D., Vourlitis, G. L., Allison, S. D., Aronson, E. L., Schimel, J. P., Hanan, E. J., & Homyak, P. M.

Bark Beetle Effects on Fire Regimes Depend on Underlying Fuel Modifications in Semiarid Systems

2022

Journal of Advances in Modeling Earth Systems (JAMES). 15(1): e2022MS003073

Ren J, Hanan EJ, Hicke JA, Abatzoglou JT, Kolden CA, Tague C, Bart R, Liu M, Adam J

How interactions between wildfire and seasonal soil moisture fluxes drive nitrogen cycling in Northern Sierra Nevada forests

2022

International Journal of Wildland Fire 31(8) 786-798

M.K. Brady, E.J. Hanan, D.B. Matthew, M.R. Jessica, J. Greenberg

Missing Climate Feedbacks in Fire Models: Limitations and Uncertainties in Fuel Loadings and the Role of Decomposition in Fine Fuel Accumulation

2022

Journal of Advances in Modeling Earth Systems, Volume14, Issue3 March 2022 e2021MS002818

E.J. Hanan, M. Kennedy, J. Ren, M. Johnson, A. Smith

Projecting Future Fire Regimes in a Semiarid Watershed of the Inland Northwestern United States: Interactions Among Climate Change, Vegetation Productivity, and Fuel Dynamics

2022

Earth’s Future 10(3): e2021EF002518

Ren J, Hanan EJ, Abatzoglou JT, Kolden CA, Tague C, Kennedy M, Liu M, Adam J

Reimagine fire science for the anthropocene

2022

PNAS Nexus, Volume 1, Issue 3, July 2022, pgac115

J. Shuman, et. al.

From burned slopes to streams: how wildfire affects nitrogen cycling and retention in forests and fire-prone watersheds.

2021

Biogeochemistry, 157(1), 51–68

Gustine, R. N., Hanan, E. J., Robichaud, P. R., & Elliot, W. J.

How climate change and fire exclusion drive wildfire regimes at actionable scales

2021

Environmental Research Letters 16(2)

E. J Hanan, J. Ren, C. L. Tague, et.al.

How does water yield respond to mountain pine beetle infestation in a semiarid forest?

2021

Hydrology and Earth System Sciences (HESS), 25(8), 4681–4699

Ren, J., Adam, J. C., Hicke, J. A., Hanan, E. J., Tague, C. L., Liu, M., … Abatzoglou, J. T.

Accounting for disturbance history in models: using remote sensing to constrain carbon and nitrogen pool spin-up.

2018

Ecological Applications. https://doi.org/10.1002/eap.1718.

Hanan EJ, Tague CL, Choate J, Liu M, Kolden C, Adam J

Responses and recovery of a chaparral watershed following wildfire.

2018

Ecosystems, 21(8), 1608-1622

Goodridge, B., Hanan, E., Wetherley, E., Aquilera, R., Chen, H., D'Antonio, C., Melack, J.

Nitrogen cycling and export in California chaparral: the role of climate in shaping ecosystem responses to fire.

2017

Ecological Monographs. 87(1):76-90.

Hanan EJ, Tague C, Schimel JP

Effects of substrate supply, pH, and char on net nitrogen mineralization and nitrification along a wildfire-structured age gradient in chaparral.

2016

Soil Biology and Biochemistry 95: 87-99

Hanan EJ, Schimel JP, Dowdy K, D’Antonio CM

Factors regulating nitrogen retention during the early stages of recovery from fire in coastal chaparral ecosystems.

2016

Ecosystems 19(5): 910-926

Hanan EJ, D’Antonio CM, Roberts DA, Schimel JP

Multi-scaled grassland-woody plant dynamics in the heterogeneous marl prairies of the southern Everglades.

2010

Ecosystems 13(8): 1256-1274

Hanan EJ, Ross MS, Ruiz PL, Sah JP

Across-scale patterning of plant-soil-water interactions surrounding tree islands in southern Everglades landscapes.

2009

Landscape Ecology 25(3): 463-476

Hanan EJ, Ross MS

Lay or Popular Publications

Megafires: Climate change or land management?

2020

Niskanen Center, Sept. 15, 2020

Hanan, E,

Reviews

The Changing Water Cycle: The ecohydrologic impacts of forest density reduction in Mediterranean (seasonally dry) regions.

2019

WIREs Water. 6(4)

Tague CL, Moritz M, Hanan EJ