A5036271300- Peatlands and Wetlands Ecology
- Coastal wetland ecosystem dynamics
- Geology and Paleoclimatology Research
- Soil Carbon and Nitrogen Dynamics
- Plant Water Relations and Carbon Dynamics
- Fire effects on ecosystems
- Microbial Community Ecology and Physiology
- Climate change and permafrost
- Cryospheric studies and observations
- Pasture and Agricultural Systems
- Plant responses to elevated CO2
University of Tasmania
2020-2024
University of British Columbia
2021-2023
Abstract Arctic and alpine tundra ecosystems are large reservoirs of organic carbon 1,2 . Climate warming may stimulate ecosystem respiration release into the atmosphere 3,4 The magnitude persistency this stimulation environmental mechanisms that drive its variation remain uncertain 5–7 This hampers accuracy global land carbon–climate feedback projections 7,8 Here we synthesize 136 datasets from 56 open-top chamber in situ experiments located at 28 arctic sites which have been running for...
Abstract. Increases in global temperatures due to climate change threaten tip the balance between carbon (C) fluxes, liberating large amounts of C from soils. Evidence warming-induced increases CO2 efflux soils has led suggestions that this response soil respiration (RS) will trigger a positive land C–climate feedback cycle, ultimately warming Earth further. Currently, there is little consensus about mechanisms driving RS response, and are relatively few studies ecosystems with stores. Here,...
Abstract Peatland drainage depletes large carbon stocks by increasing dioxide (CO 2 ) emissions from the soil. Restoration via re‐wetting could play an important role in climate change mitigation, reducing CO and C storage within peatlands. However, leads to a biogeochemical compromise between increased uptake, enhanced methane (CH 4 release. The extent of this re‐wetted ecosystems with differing environmental conditions is uncertain. To assess effects, we analyzed eddy‐covariance flux...
Peatland rewetting, a management effort to restore water levels in previously drained peatlands, is important for re-establishing the role of these peatlands as carbon (C) sinks. Since rewetted have highly variable response interannual variations climatic conditions and functional changes, long term studies C fluxes ecosystems are needed. Here, we evaluated impact climate variability change on CO2 CH4 at Burns Bog, temperate bog Pacific Coast Canada, based five years eddy covariance...
Abstract Rewetting of disturbed peatlands is an important restoration strategy for climate change mitigation. Previous work primarily focuses on the biogeochemical processes altered by rewetting and few studies have investigated biophysical impacts, which can diminish or amplify effects beyond ecosystem scale. We used a paired flux tower approach in restored peatland to collect year‐round eddy covariance data assess impacts disturbance management practices. The first site was actively...
Abstract. Increases in global temperatures due to climate change threaten tip the balance between carbon (C) fluxes, liberating large amounts of C from soils. Evidence warming-induced increases CO2 efflux soils has led suggestions that this response soil respiration (Rs) will trigger a positive land C–climate feedback cycle, ultimately warming earth further. Currently, there is little consensus about mechanisms driving Rs response, and are relatively few studies ecosystems with stores. Here,...
Context Increases in atmospheric carbon dioxide concentration ([CO2]) drive increases biomass production via impacts on photosynthesis and water use. In grasslands, the scale of this stimulation is related to soil availability. Recently, it has become clear that way precipitation controls elevated CO2 (eCO2) effects grassland strongly seasonal but no mechanism yet exists explain these observations. Aims The aims study were determine how availability affects aboveground, belowground total...
Increases in atmospheric CO2 concentration ([CO2]) drive increases biomass production via impacts on photosynthesis and water use. In grasslands, the scale of this stimulation is related to soil availability. Recently, seasonal influences how precipitation controls elevated (eCO2) effects grassland have emerged. We established TasFACE2 experiment a well-fertilised perennial ryegrass (Lolium perenne) monoculture with four irrigation schedules determine availability affects aboveground,...