Considering coasts: Adapting terrestrial models to characterize coastal wetland ecosystems
June 15, 2021
Genevieve, Roy, and Pat published modified E3SM models to mimic tidal marsh dynamics and SMARTX findings in Ecological Modeling!
“The Energy Exascale Earth System Model (E3SM) simulates fully coupled processes and interactions among water, energy, carbon and nutrient cycles. E3SM connects vegetation and soil dynamics through nutrient uptake, plant production, litterfall and decomposition as a function of abiotic parameters (e.g. temperature and moisture). However, E3SM is designed to characterize terrestrial ecosystems and connects land and open ocean systems using a single streamflow transport term, ignoring the complex dynamics of energy, water, carbon, and nutrients in coastal systems. The goals of our project were to: (1) Parameterize a point version of E3SM to capture coastal wetland habitats and (2) Determine marsh community responses to increased temperature and elevated CO2.”
O’Meara, T.A., Thornton, P.E., Ricciuto, D.M.,Noyce, G. L., Rich, R.L., and Megonigal, J. P. (2021).
Biogeochemical and plant trait mechanisms drive enhanced methane emissions in response to whole-ecosystem warming
April 19, 2021
Genevieve and Pat published findings from SMARTX in Biogeosciences!
“Climate warming perturbs ecosystem carbon (C) cycling, causing both positive and negative feedbacks on greenhouse gas emissions. In 2016, we began a tidal marsh field experiment in two vegetation communities to investigate the mechanisms by which whole-ecosystem warming alters C gain, via plant-driven sequestration in soils, and C loss, primarily via methane (CH4) emissions. Here, we report the results from the first 4 years.”
Noyce, G. L. and Megonigal, J. P. (2021).
Synergistic effects of four climate change drivers on terrestrial carbon cycling
November 23, 2020
Roy published a paper in Nature Geoscience with TeRaCON collaborators!
"Disentangling impacts of multiple global changes on terrestrial carbon cycling is important, both in its own right and because such impacts can dampen or accelerate increases in atmospheric CO2 concentration. Here we report on an eight-year grassland experiment, TeRaCON, in Minnesota, United States, that factorially manipulated four drivers: temperature, rainfall, CO2 and nitrogen deposition.”
Reich, P. B., Hobbie, S. E., Lee, T. D., Rich, R., Pastore, M. A., & Worm, K. (2020).
August 13, 2021
The TE Lab has deployed a new weather station at the Global Change Research Wetland! The station uses multiple instruments to collect MET, water level, and soil data every 15 minutes.
Photo: Leona Neftaliem
April 2, 2021
Automated methane chambers designed by Roy and Genevieve have become the newest addition to the Global Change Research Wetland! Twelve methane chambers were deployed as a part of GenX to capture methane data at short time scales, including methane changes in response to precipitation, tidal cycles, and other weather events.
Photo: Genevieve Noyce
March 5, 2021
Marc deployed a pilot experiment at the Virginia Coast Reserve using our CO2 sensors! Marc will be deploying 24 more sensors on the Eastern shore of Virginia to capture CO2 dynamics at a rapidly changing terrestrial-aquatic interface.
Photo: Marc Rosenfield