Effects of Prescribed Burn on Nutrient and Dissolved Organic Matter Characteristics in Peatland Shallow Groundwater
Open Access
- 16 September 2020
- Vol. 3 (3), 53
- https://doi.org/10.3390/fire3030053
Abstract
Wildfires are a common disturbance in boreal regions and have the potential to affect the waterborne export of organic matter and nutrients from burned catchments. To understand the effect of fire on shallow groundwater chemistry in a forested peatland in northern Alberta, Canada, shallow groundwater monitoring wells were sampled before and after a prescribed burn. The samples were collected from control and treatment wells between May and August 2019. The results indicate no differences in dissolved organic matter concentration and chemical composition between wells in burned and unburned sections but substantially increased nutrient concentrations were found in the burned section. Here, the levels of phosphorus increased and did not return to pre-fire levels at the end of the monitoring period, while the levels of inorganic nitrogen increased and returned to pre-fire levels within a few months. With increasing wildfire activity, or as a result of prescribed burns in the Boreal Plains, we may see implications for downstream water quality, including lake trophic status.Keywords
This publication has 33 references indexed in Scilit:
- Patterns and Dynamics of Dissolved Organic Carbon (DOC) in Boreal Streams: The Role of Processes, Connectivity, and ScalingEcosystems, 2011
- Recent acceleration of biomass burning and carbon losses in Alaskan forests and peatlandsNature Geoscience, 2010
- Fluorescence spectroscopy opens new windows into dissolved organic matter dynamics in freshwater ecosystems: A reviewLimnology and Oceanography, 2010
- Linking forest fires to lake metabolism and carbon dioxide emissions in the boreal region of Northern QuébecGlobal Change Biology, 2009
- Impact of Wildfire on Stream Nutrient Chemistry and Ecosystem Metabolism in Boreal Forest Catchments of Interior AlaskaArctic, Antarctic, and Alpine Research, 2009
- Interactive Effects of Fire, Soil Climate, and Moss on CO2 Fluxes in Black Spruce Ecosystems of Interior AlaskaEcosystems, 2008
- Climate and wildfires in the North American boreal forestPhilosophical Transactions B, 2007
- Effects of fire on properties of forest soils: a reviewOecologia, 2005
- Forest fire induced impacts on phosphorus, nitrogen, and chlorophyll a concentrations in boreal subarctic lakes of northern AlbertaCanadian Journal of Fisheries and Aquatic Sciences, 2000
- Groundwater flow and dissolved carbon movement in a boreal peatlandJournal of Hydrology, 1997