Daniel Hoer, Ph.D.

Ecological & Biological Sciences

Dr. Hoer is an environmental chemist and ecosystem ecologist with 10 years of experience investigating the physical and biological processes regulating the transport and transformation of chemicals in aquatic environments. His research has spanned a range of limnologic and marine environments investigating the biogeochemical cycling of gases (e.g., methane, oxygen, hydrogen sulfide, carbon dioxide), dissolved nutrients (N and P compounds), and organic matter. His projects have been heavily focused on marine environments, but the interrogated processes control chemical cycling in a broad range of global aquatic ecosystems.

Dr. Hoer has a deep background in environmental analytical chemistry with skills in both archetypal laboratory methodologies and field instrumentation, as well as the associated quantitative practices for data management and analysis. In addition to commercial sensors and platforms, Dr. Hoer has developed and utilized prototype and purpose-built chemical sensors to provide the type, quality, or resolution of data required by the project. In addition to these analytical and data skills, Dr. Hoer is a skilled field scientist with more than 30 weeks of high-seas experience and 40 weeks of nearshore work in smaller vessels. His efforts are frequently multi-disciplinary affairs engaging diverse groups of engineers, scientists, and technical staff.

In addition to his research efforts, Dr. Hoer designed and led a course on human impact in the marine environment that he has taught at the University of North Carolina at Chapel Hill and Harvard University. The course has been taken by graduate and undergraduate students and is designed to serve as an expository survey of emerging topics in anthropogenic marine stressors such as persistent organic pollutants, heavy metals, and nutrient runoff.


  • Ph.D., Marine Sciences, University of North Carolina, Chapel Hill, 2015
  • B.S., Environmental Sciences, University of North Carolina, Chapel Hill, 2009


Hoer D, Tommerdahl J, Lindquist N, Martens C (2018). Dissolved inorganic nitrogen fluxes from common Florida Bay (USA) sponges. Limnology and Oceanography. DOI: 10.1002/lno.10960.

Hoer D, Gibson P, Tommerdahl J, Lindquist N, Martens C (2018). Consumption of dissolved organic carbon by Caribbean reef sponges. Limnology and Oceanography. Vol: 63, Pages: 337–351. DOI: 10.1002/lno.10634.

Teske A, de Beer D, McKay L, Biddle J, Tivey M, Hoer D, Lloyd K, Lever M, Røy H, Albert D, Mendlovitz H, MacGregor B (2016). The Guaymas Basin hiking guide to hydrothermal mounds, chimneys and microbial mats: complex seafloor expressions of subsurface hydrothermal circulation. Frontiers in Microbiology. 7.

McKay L, Klokman V, Mendlovitz H, LaRowe D, Hoer D, Albert D, Amend J, Teske A (2016). Thermal and geochemical influences on microbial biogeography in the hydrothermal sediments of Guaymas Basin, Gulf of California. Environmental Microbiology Reports. 8(1). pp 150–161.

McKay L, MacGregor B, Biddle J, Albert D, Mendlovitz H, Hoer D, Lipp J, Lloyd K, Teske A (2012). Spatial heterogeneity and underlying geochemistry of phylogenetically diverse orange and white Beggiatoa mats in Guaymas Basin hydrothermal sediments. Deep Sea Research I. 67. pp 21–31.


Hoer, D., Girguis, P., Michel, A., Wankel, S., Farr, N., Pontbriand, C. Development and deployment of the autonomous biogeochemical in situ sensing system (ABISS). Presented at ASLO Ocean Sciences Meeting. Portland, OR USA [Oral]. February 2018.

Hoer, D. and Girguis, P. Probing Marine Biogeochemistry Through in situ Mass Spectrometric Characterization of Dissolved Volatiles: Lessons from the Past and Future Directions. Invited presentation at the ROBEX Sensor Workshop. Vienna, Austria. [Oral]. April 2017

Hoer, D., J. Tommerdahl, N. Lindquist, C. Martens. Nitrogen Cycling by Sponges in Florida Bay, USA. Presented at ASLO Ocean Sciences meeting. Honolulu, HI USA [Oral]. February 2014.

Hoer, D., N. Lindquist, C. Martens. Sponge mediated respiration and cycling of dissolved organic matter. Presented at ASLO Aquatic Sciences meeting. New Orleans, LA USA. [Oral]. February 2013.

Hoer, D., Torres, M. A., Bak, E., Wunderlin, T., Pedersen, L. R., Frantz, C. M. Johnson, H. Berelson, W., Caporaso, J., Spear, J. R. Autotrophic DIC uptake rates and their association to microbial community structure in microbial mats from a sulfidic, saline, warm spring, Utah, USA. Presented at AGU Fall Meeting. San Francisco, CA USA. [Poster]. December 2012.

Prior Experience

Research Associate and Lead Engineer, Harvard University, 2018–2019

Postdoctoral Scholar, Harvard University 2015–2018

Howard Hughes Medical Institute Teaching Fellow, University of North Carolina at Chapel Hill, 2012

Graduate Research and Teaching Assistant, University of North Carolina at Chapel Hill, 2010–2015

Academic Appointments

Lecturer, Biological Sciences, Division of Continuing Education, Harvard University, 2018-2019

HHMI Lecturer, Marine Sciences, University of North Carolina at Chapel Hill, 2012

Professional Affiliations

Association for the Sciences of Limnology and Oceanography (ASLO)

American Geophysical Union (AGU)


  • Ph.D., Marine Sciences, University of North Carolina, Chapel Hill, 2015
  • B.S., Environmental Sciences, University of North Carolina, Chapel Hill, 2009