The effects of temperature and nitrogen and sulfur additions on carbon accumulation in a nutrient-poor boreal mire: Decadal effects assessed using 210Pb peat chronologies. Olid, C., Nilsson, M. B., Eriksson, T., & Klaminder, J. Journal of Geophysical Research: Biogeosciences, 119(3):2013JG002365, March, 2014. 00008
The effects of temperature and nitrogen and sulfur additions on carbon accumulation in a nutrient-poor boreal mire: Decadal effects assessed using 210Pb peat chronologies [link]Paper  doi  abstract   bibtex   
Boreal peatlands are a major long-term reservoir of atmospheric carbon (C) and play an important role in the global C cycle. It is unclear how C accumulation in peatlands responds to changing temperatures and nutrients (specifically, nitrogen and sulfur). In this study, we assessed how the C input rate and C accumulation rate in decadal old peat layers respond to increased air temperatures (+3.6°C) during the growing season and the annual additions of nitrogen (N) and sulfur (S) (30 and 20 kg ha−1 yr−1, respectively) over 12 years of field treatments in a boreal mire. An empirical mass balance model was applied to 210Pb-dated peat cores to evaluate changes in C inputs, C mass loss, and net C accumulation rates in response to the treatments. We found that (i) none of the treatments generated a significant effect on peat mass loss decay rates, (ii) C input rates were positively affected by N additions and negatively affected by S additions, (iii) the C accumulation rate in the uppermost (10 to 12 cm) peat was increased by N additions and decreased by S additions, and (iv) only air temperature significantly affected the main effects induced by N and S additions. Based on our findings, we argue that C accumulation rates in surface peat layers of nutrient-poor boreal mires can increase despite the predicted rise in air temperatures as long as N loads increase and acid atmospheric S remains low.
@article{olid_effects_2014,
	title = {The effects of temperature and nitrogen and sulfur additions on carbon accumulation in a nutrient-poor boreal mire: {Decadal} effects assessed using {210Pb} peat chronologies},
	volume = {119},
	issn = {2169-8961},
	shorttitle = {The effects of temperature and nitrogen and sulfur additions on carbon accumulation in a nutrient-poor boreal mire},
	url = {http://onlinelibrary.wiley.com/doi/10.1002/2013JG002365/abstract},
	doi = {10.1002/2013JG002365},
	abstract = {Boreal peatlands are a major long-term reservoir of atmospheric carbon (C) and play an important role in the global C cycle. It is unclear how C accumulation in peatlands responds to changing temperatures and nutrients (specifically, nitrogen and sulfur). In this study, we assessed how the C input rate and C accumulation rate in decadal old peat layers respond to increased air temperatures (+3.6°C) during the growing season and the annual additions of nitrogen (N) and sulfur (S) (30 and 20 kg ha−1 yr−1, respectively) over 12 years of field treatments in a boreal mire. An empirical mass balance model was applied to 210Pb-dated peat cores to evaluate changes in C inputs, C mass loss, and net C accumulation rates in response to the treatments. We found that (i) none of the treatments generated a significant effect on peat mass loss decay rates, (ii) C input rates were positively affected by N additions and negatively affected by S additions, (iii) the C accumulation rate in the uppermost (10 to 12 cm) peat was increased by N additions and decreased by S additions, and (iv) only air temperature significantly affected the main effects induced by N and S additions. Based on our findings, we argue that C accumulation rates in surface peat layers of nutrient-poor boreal mires can increase despite the predicted rise in air temperatures as long as N loads increase and acid atmospheric S remains low.},
	language = {en},
	number = {3},
	urldate = {2017-04-28},
	journal = {Journal of Geophysical Research: Biogeosciences},
	author = {Olid, Carolina and Nilsson, Mats B. and Eriksson, Tobias and Klaminder, Jonatan},
	month = mar,
	year = {2014},
	note = {00008},
	keywords = {\#nosource, 0414 Biogeochemical cycles, processes, and modeling, 0428 Carbon cycling, 0497 Wetlands, 1115 Radioisotope geochronology, 1630 Impacts of global change, 210Pb, Mire, Nitrogen, carbon, climate change, temperature},
	pages = {2013JG002365},
}

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