Havalend E. Steinmuller, Ph.D.

Senior Marine Scientist I, Dauphin Island Sea Lab

Assistant Professor of Marine Sciences, University of South Alabama

hsteinmuller@disl.edu (251) 861-2141

Bio

Research focuses on the biogeochemical cycling of carbon, nitrogen, and phosphorus within and throughout coastal systems, including mangroves, intertidal oyster reefs, and tidal marshes. Specifically, she is interested in how disturbance (sea level rise, eutrophication, extreme events, etc.) alters biogeochemical cycling within coastal soils and sediments.

Publications

2022

  • Steinmuller, H.E., J. Garwood, E. Bourque, S.B. Lucas, K.M. Engelbert, J. L. Breithaupt. Comparing vertical change in riverine, bayside, and barrier island wetland soils in response to acute and chronic disturbance in Apalachicola Bay, FL. Accepted in a special issue (Wetland Elevation Dynamics) of Estuaries and Coasts. https://doi.org/10.1007/s12237-022-01131-4
  • Breithaupt, JL., and HE. Steinmuller. Refining the global estimate of mangrove carbon burial rates using sedimentary and geomorphic settings. Geophysical Research Letters (2022):e2022GL100177. https://doi.org/10.1029/2022GL100177
  • Steinmuller, H. E., J.L. Breithaupt, K. Engelbert, P. Assavapanuvat, T. S. Bianchi. Coastal wetland soil organic carbon storage at mangrove range limits in Apalachicola Bay, FL: Observations and expectations. Accepted in a special issue (Mangroves in the Anthropocene) of Frontiers in Forests and Global Change. https://doi.org/10.3389/ffgc.2022.852910
  • Hurst, N.R., B. Locher, H.E. Steinmuller, L. J. Walters, and L.G, Chambers. Carbon Dynamics and Microbial Community Response to Oyster Reef Restoration: Implications for Carbon Storage. Limnology and Oceanography (2022). https://doi.org/10.1002/lno.12063

2021

  • Steinmuller, H.E., S. L. Stoffella, R. Vidales, M.S. Ross, S. Dattamudi, and L.J. Scinto. Characterizing hydrologic effects on soil physicochemical variations within coastal tree islands and marshes in the Florida Everglades. Soil Science Society of America Journal (2021). https://doi.org/10.1002/saj2.20270

2020

  • Steinmuller, H.E., T.E. Foster, C.R. Hinkle, L.G. Chambers. Herbaceous encroachment increases soil nutrient content and supports higher rates of biogeochemical processing in a coastal marsh. Science of The Total Environment Volume 738. https://doi.org/10.1016/j.scitotenv.2020.139532
  • Steinmuller, H.E., M.P. Hayes, N.R. Hurst, Y. Sapkota, R.L. Cook, J.R. White, X. Zuo, L.G. Chambers. Does edge erosion alter coastal wetland soil properties? A multi-method biogeochemical study. Catena 187 (2020). https://doi.org/10.1016/j.catena.2019.104373
  • Steinmuller, H.E., T. E Foster, P. Boudreau, C.R. Hinkle, L.G. Chambers. Tipping points in the mangrove march: Characterization of biogeochemical cycling along the mangrove – salt marsh ecotone. Ecosystems (2020). https://doi.org/10.1007/s10021-019-00411-8

2019

  • Breithaupt, J.L., N.R. Hurst, H.E. Steinmuller, E. Duga, J.M. Smoak, J. Kominoski, L.G. Chambers. Comparing the biogeochemistry of storm surge sediments and pre-storm soils in coastal wetlands: Hurricane Irma and the Florida Everglades. Accepted within a special issue (Impact of 2017 Hurricanes on Estuaries and Coasts in the Caribbean and the Gulf Coast States) of Estuaries and Coasts (2019). https://doi.org/10.1007/s12237-019-00607-0
  • Steinmuller, H. E., and Lisa G. Chambers. Characterization of coastal wetland soil organic matter: Implications for wetland submergence. Science of the Total Environment 677 (2019) 648-659. https://doi.org/10.1016/j.scitotenv.2019.04.405
  • Chambers, L.G., H.E. Steinmuller, J. Breithaupt. Toward a mechanistic understanding of peat collapse and its contribution to coastal wetland loss. Ecology (2019) 100 (7):e02720. https://doi.org/10.1002/ecy.2720
  • Steinmuller, H.E., K. Dittmer, J.R. White, L.G. Chambers. Understanding the fate of soil organic matter in submerging coastal wetland soils: a microcosm approach. Geoderma 337 (2019): 1267-1277. https://doi.org/10.1016/j.geoderma.2018.08.020

2018

  • Steinmuller, H. E., and Lisa G. Chambers. Can saltwater intrusion accelerate nutrient export from freshwater wetland soils? An experimental approach. Soil Science Society of America Journal 82.1 (2018) 283-292. https://doi.org/10.2136/sssaj2017.05.0162
  • White, J.R., H.E. Steinmuller. El ciclo del Nitrogeno en los humedales. Humedales de tratamiento: alternativa de tratamiento de aquas residuales aplicable en America Latina (2018).

2017

  • Dittmer, K. M., Steinmuller, H.E., Chambers, L.G. Temperature effects on greenhouse gas production from treatment wetland soils along a nutrient gradient. UCF Undergraduate Research Journal 9 (2017). https://sciences.ucf.edu/biology/abl/wp-content/uploads/sites/16/2018/12/Dittmer-et-al.-2018.pdf
  • Chambers, L.G., Gaspar, S.A., Pilato, C.J., Steinmuller, H.E., McCarthy, K.J., Sacks, P.E., Walters, L.J. How well do restored intertidal oyster reefs support key biogeochemical properties in a coastal lagoon? Estuaries and Coasts (2017).

2016

  • Steinmuller, H.E., M.B. McKee, J.R. White, S. A. Graham, I.A. Mendelssohn. A Decadal Scale Nutrient Loading Study in a Coastal Wetland: Impacts on Soil Microbial Processes”. Ecological Engineering (2016). 97:58-63.

Manuscripts in review

  • Breithaupt, J.L., H.E. Steinmuller, A. S. Rovai, K. Engelbert, J.M. Smoak, L.G. Chambers, S. Harttung, K. Radabaugh, R. P. Moyer, A. Chappel, K. Comparetto, D. Vaughn, T.S. Bianchi, R. R. Twilley, M. Cifuentes, P. Pagliosa. An improved framework for estimating organic carbon content of mangrove soils using loss-on-ignition and coastal environmental setting. Submitted to Scientific Reports.