Mary Alldred

Mary Alldred

Assistant Professor of Environmental Science

SUNY Plattsburgh

Mary Alldred is an assistant professor of environmental science at the Center for Earth and Environmental Science at SUNY Plattsburgh. She studies the influence of organisms and ecological communities on ecosystem function. Her research focuses on predicting the influence of wetland plants on denitrification, a microbial process that provides an important ecosystem service by removing excess nitrogen. Her work has also addressed the impacts of coastal management, including invasive-plant removal and coastal marsh restorations, on nitrogen cycling and ecosystem services.


  • Nitrogen cycling
  • Wetland ecology
  • Urban ecosystems
  • Coastal management
  • Ecological restoration


  • Postdoc in Natural Sciences, 2015-2017

    Baruch College CUNY

  • PhD in Ecology and Evolution, 2015

    Stony Brook University

  • BS in Biology, 2008

    University of Notre Dame

Professional Wetland Scientist

View Listing


Graduate Students


Kayleen Snyder

Graduate Research Assistant



Alexandria Elliott

BioReagents Formulator


Brandon Lenberger

Staff Scientist


Chase Wojtowecz

Conservation District Intern


Jesse Pruden

Prescribed Fire Crew Member


Juliana Flint

PhD Student


Kierstyn Higgins

Graduate Teaching Assistant


Makayla Tompkins

Laboratory Technician, Boat Crew


Mark Heyer

Environmental Geologist


Michala Hendrick

Avian Specialist


Robert Kruse

BS Ecology, Mathematics Minor


Sarahana Shrestha

Graduate Teaching Assistant


Stephanie Gray

Field Representative


Troy Tetreault

Graduate Teaching Assistant

Graduate Alumni


Lily Delmarsh

Hydrologic Technician, USGS


Thomas Whaley

Plant Protection Technician, USDA


Mutualistic Species Interactions

Determining the influence of mutualistic species interactions on nitrogen cycling and marsh stability in restored urban marshes

Zoom a Microbe

Let’s face it, microbes can be hard to relate to. That’s why I created the Zoom a Microbe video series, where we dive below the surface and get to know them.

Educational Displays at the LaPierre Lane Riverway

Collaborative project with the Town of Plattsburgh to develop eduational displays for the LaPierre Lane Riverway, a spur of the Saranac River Trail

Ecosystem Dynamics of the Altona Flat Rock

Collaborative project to understand short-term and long-term dynamics in the fire-dependent ecosystems of the Altona Flat Rock sandstone pavement pine barren

Urban Marsh Restoration

Investigating development of ecosystem services following urban marsh restoration using a chronosequence of restored marshes

Using Organismal Traits to Predict Ecosystem Processes

A number of studies that use plant traits to predict the effects of plants on denitrification in wetland sediments

Recent Publications

Size and density of upside-down jellyfish, *Cassiopea* sp., and their impact on benthic fluxes in a Caribbean lagoon

Anthropogenic disturbances may be increasing jellyfish populations globally. Epibenthic jellyfish are ideal organisms for studying this …

Marsh plants enhance coastal marsh resilience by changing sediment oxygen and sulfide concentrations in an urban, eutrophic estuary

Despite considerable efforts to restore coastal wetlands, the ecological mechanisms contributing to the success or failure of …

Ribbed mussels *Geukensia demissa* enhance nitrogen-removal services but not plant growth in restored eutrophic salt marshes

Salt marshes are decreasing worldwide. Restoration projects address marsh loss, yet it remains unclear how well restored marshes grow, …

Impact of salinity and nutrients on salt marsh stability

Belowground growth in coastal plants is critical for marsh stability and the ability of coastal wetlands to keep pace with sea‐level …

Effects of invasive-plant management on nitrogen-removal services in freshwater tidal marshes

Establishing relationships between biodiversity and ecosystem function is an ongoing endeavor in contemporary ecosystem and community …