Matthew J Cashman, Ph.D.

Matthew's interests are in the interdisciplinary interactions between hydrology, geomorphology, and ecology. His current research focuses on machine-learning modeling of ecological and habitat conditions, erosion and habitat mapping using Unmanned Aerial Systems and gage data, and developing tools to identify the sources of sediment degrading river habitat, including sediment fingerprinting.



Ph.D., River Science, Queen Mary University of London and Freie Universität Berlin

Dissertation: The effect of large wood on river physical habitat and nutritional dynamics 

M.S., Biological Sciences (Ecology), Fordham University, Bronx, NY

B.S., Biological Sciences, Fordham University, Bronx, NY



MJ Cashman, A Gellis, E Boyd, M Collins, S Anderson, B McFarland, A Ryan. 2021. Channel response to a dam-removal sediment pulse captured at high-temporal resolution using routine gage data. 2021. Earth Surface Processes and Landforms. Early View

GB Noe, MJ Cashman, K Skalak, A Gellis, KG Hopkins, D Moyer, J Webber, A Benthem, K Maloney, J Brakebill, A Sekellick, M Langland, Q Zhang, G Shenk, J Keisman, C Huff. 2020. Sediment dynamics and implications for management: State of the science from long-term research in the Chesapeake Bay watershed, USA. Wiley Interdisciplinary Reviews: Water. 7: e1454.

J Koci, R Sidle, B Jarihani, MJ Cashman.  2019. Linking hydrological connectivity to gully erosion in savanna rangelands tributary to the Great Barrier Reef using structure-from-motion photogrammetry. Land Degradation & Development. 31: 20-36.

Cashman MJ, G Wharton, G Harvey, M Naura, A Bryden. 2018. Trends in the use of large wood in UK river restoration projects: insights from the National River Restoration Inventory. Water and Environment Journal  33: 318-328.

Cashman MJ, A Gellis, L Gorman-Sanisaca, G Noe, V Cogliandro, A Baker. 2018. Bank-derived material dominates fluvial sediment in a suburban Chesapeake Bay watershed. River Research and Applications 34: 1032-1044.

Cashman MJ, G Harvey, G Wharton, MC Bruno. 2017. Wood mitigates the effect of hydropeaking scour on periphyton biomass and nutritional quality in semi-natural flume simulations. Aquatic Sciences 79: 459-471.

Cashman MJ, F Pilotto, G Harvey, G Wharton, and MT Pusch. 2016. Combined stable isotope and fatty acid analyses demonstrate that large wood increases the autochthonous trophic base of the macroinvertebrate assemblage. Freshwater Biology 61: 549-564.

Bruno MC, MJ Cashman, M Bruno, S Biffi, G Zolezzi. 2016. Responses of benthic invertebrates to repeated hydropeaking in semi-natural flume simulations. Ecohydrology 9: 68-82.

Cashman MJ, JD Wehr, and K Truhn. 2013. Elevated light and nutrients alter the nutritional quality of stream periphyton. Freshwater Biology 58: 1444-1457.

Seidel D, C Leuschner, C Scherber, F Beyer, T Wommelsdorf, MJ Cashman, and L Fehrmann. 2013. The relationship between tree species richness, canopy space exploration and productivity in a temperate broad-leaf mixed forest. Forest Ecology and Management 310: 366-374.


Recent Presentations

Cashman MJ. 2018. Structure-from-Motion surveying: A paradigm shift in geomorphic monitoring (invited seminar). Towson University. Towson, MD; March 9, 2018.

Cashman MJ and J Bell. 2018. Structure-from-Motion Surveying: A paradigm shift in erosion monitoring (invited seminar). Franklin and Marshall University. Lancaster, PA; February 28, 2018.

Cashman MJ. 2018. Structure-from-Motion Surveying and Unmanned Aerial Systems: A new resolution of environmental data (invited seminar). MD-DE-DC Water Science Center. Baltimore, MD; February 14, 2018.

Cashman MJ, A Gellis, J Siemion, M McHale, D Davis, and E DePalma. 2018. A Pilot Study on Identifying and Monitoring Source Sediment Fingerprints within Stony Clove Creek, Catskills, NY: 2017-2018 (oral). Esopus Sediment Studies Meeting. Kingston, NY; January 31, 2018.

Cashman MJ. 2018. Structure-from-Motion surveying and unmanned aerial systems: A new resolution of environmental data (invited seminar). Maryland Water Monitoring Council Board Meeting. Annapolis, MD; January 16, 2018.

Cashman MJ, A Gellis, L Gorman Sanisaca, G Noe, V Cogliandro and A Baker. 2017. Bank-derived material dominates fluvial sediemnt in a suburban Chesapeake Bay watershed (poster). American Geophysical Union Fall Meeting 2017. New Orleans, LA; December 15, 2017.

Cashman MJ. 2017. Exploring the use of Structure from Motion surveying as a cost-effective means to quantify landscape change in near real-time (oral). Maryland Water Monitoring Council Annual Meeting. Timonium, MD; December 8, 2017.

Cashman MJ and A Gellis. 2017. The need to identify sediment sources to improve the health of our streams (invited seminar). USGS Leetown Science Center. Leetown, WV; October 11, 2017.

Cashman MJ, E Boyd, J Dillow and A Gellis. 2017. Automating specific stage plots: Utilizing the stage-discharge relationship to track channel change (poster). USGS Chesapeake Bay Workshop.  Shepardstown, WV; August 28, 2017.

Cashman MJ and A Gellis. 2017. Sediment fingerprinting, a biological perspective (invited seminar). University of Delaware. Newark, DE; February 14, 2017.