Data from: Plant uptake offsets silica release from a large Arctic tundra wildfire ...
Rapid climate change at high latitudes is projected to increase wildfire extent in tundra ecosystems by up to five-fold by the end of the century. Tundra wildfire could alter terrestrial silica (SiO2) cycling by restructuring surface vegetation and by deepening the seasonally-thawed active layer. Th...
| Main Authors: | , , |
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| Format: | Dataset |
| Language: | English |
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Dryad
2019
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.79q74n7 https://datadryad.org/stash/dataset/doi:10.5061/dryad.79q74n7 |
| Summary: | Rapid climate change at high latitudes is projected to increase wildfire extent in tundra ecosystems by up to five-fold by the end of the century. Tundra wildfire could alter terrestrial silica (SiO2) cycling by restructuring surface vegetation and by deepening the seasonally-thawed active layer. These changes could influence the availability of silica in terrestrial permafrost ecosystems and alter lateral exports to downstream marine waters, where silica is often a limiting nutrient. In this context, we investigated the long-term effects of the largest Arctic tundra fire in recent times on plant and peat amorphous silica content and dissolved silica concentration in streams. Ten-years after the fire, vegetation in burned areas had 73% more silica in aboveground biomass compared to adjacent, unburned areas. This increase in plant silica was attributable to significantly higher plant silica concentration in bryophytes and increased prevalence of silica-rich gramminoids in burned areas. Tundra fire ... : Thaw depthThis file contains annual thaw depths at moderate and severe and unburned plots, along with standard deviations and standard errors for each year2008-2017ARF_ThawDepths_7.9.19.csvPlant_BSi_ConcentrationsThis file contains plant BSi concentrations (as SiO2 by dry weight) for each individual plant sample collected. Treatment data and plant functional type for each sample also indicated.Anaktuvuk_PlantSiData_7.9.19.csvTributary_DSiConcentrations_1.15.19This file contains DSi concentrations in burned and unburned tributaries from the summer (June, July, August) of 2017.Peat_ASiConcentrationData_7.9.19This datafile contains soil (peat) ASi concentration data for all burn types for the O and A soil horizonsSoil_ASiData_7.9.19.csv ... |
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