Periodic Reporting for period 2 - MarshFlux (The effect of future global climate and land-use change on greenhouse gas fluxes and microbial processes in salt marshes)
Período documentado: 2022-01-04 hasta 2023-01-03
The primary objective of MarshFlux is to determine the response of biogeochemical reaction rates and greenhouse gas (GHG) fluxes in salt marshes to a variety of environmental factors, which are expected to vary due to future global climate and land-use change. There are three research objectives to achieve this overall aim; 1) to determine the effect, both individually and combined, of changes in nutrient concentrations, salinity and temperature on GHG fluxes in soils from salt marshes along a climatic-gradient, 2) to determine the relative importance and strengths of the various pathways of N2O and CH4 production and consumption in marsh soils, under varying nutrient concentrations, salinity and temperature and 3) to develop indices of the magnitude and direction of GHG fluxes under projected future climate and land-use scenarios to allow more accurate prediction of future GHG emissions from salt marshes. These will be determined by measuring GHG fluxes from the entire marsh system, incorporating soil, water and vegetation, representative of in-situ conditions, under varying environmental stressors (nutrient concentrations, salinity, temperature) and vegetation-types.