Stream Dissolved Organic Matter in Permafrost Regions Shows Surprising Compositional Similarities but Negative Priming and Nutrient Effects

doi:10.1029/2020GB006719

	Stream Dissolved Organic Matter in Permafrost Regions Shows Surprising Compositional Similarities but Negative Priming and Nutrient Effects
	Wologo, Ethan ; Shakil, Sarah ; Zolkos, Scott ; Textor, Sadie ; Ewing, Stephanie ; Klassen, Jane ; Spencer, Robert G. M.; Podgorski, David C.; Tank, Suzanne E.; Baker, Michelle A.; O'Donnell, Jonathan A.; Wickland, Kimberly P.; Foks, Sydney S. W.; Zarnetske, Jay P.; Lee-Cullin, Joseph ; Liu, Futing 10; Yang, Yuanhe10 ; Kortelainen, Pirkko 11; Kolehmainen, Jaana 11; Dean, Joshua F.; Vonk, Jorien E.; Holmes, Robert M.; Pinay, Gilles 14; Powell, Michaela M.; Howe, Jansen ; Frei, Rebecca J.; Bratsman, Samuel P.; Abbott, Benjamin W.
	2021
Source Publication	GLOBAL BIOGEOCHEMICAL CYCLES
ISSN	0886-6236
Volume	35 Issue:1
Abstract	Permafrost degradation is delivering bioavailable dissolved organic matter (DOM) and inorganic nutrients to surface water networks. While these permafrost subsidies represent a small portion of total fluvial DOM and nutrient fluxes, they could influence food webs and net ecosystem carbon balance via priming or nutrient effects that destabilize background DOM. We investigated how addition of biolabile carbon (acetate) and inorganic nutrients (nitrogen and phosphorus) affected DOM decomposition with 28-day incubations. We incubated late-summer stream water from 23 locations nested in seven northern or high-altitude regions in Asia, Europe, and North America. DOM loss ranged from 3% to 52%, showing a variety of longitudinal patterns within stream networks. DOM optical properties varied widely, but DOM showed compositional similarity based on Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) analysis. Addition of acetate and nutrients decreased bulk DOM mineralization (i.e., negative priming), with more negative effects on biodegradable DOM but neutral or positive effects on stable DOM. Unexpectedly, acetate and nutrients triggered breakdown of colored DOM (CDOM), with median decreases of 1.6% in the control and 22% in the amended treatment. Additionally, the uptake of added acetate was strongly limited by nutrient availability across sites. These findings suggest that biolabile DOM and nutrients released from degrading permafrost may decrease background DOM mineralization but alter stoichiometry and light conditions in receiving waterbodies. We conclude that priming and nutrient effects are coupled in northern aquatic ecosystems and that quantifying two-way interactions between DOM properties and environmental conditions could resolve conflicting observations about the drivers of DOM in permafrost zone waterways.
Keyword	permafrost cryosphere and high-latitude processes thermokarst rivers carbon cycling nutrients and nutrient cycling
Subject Area	Environmental Sciences ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
DOI	10.1029/2020GB006719
Indexed By	SCI
Language	英语
WOS Keyword	BOREAL CATCHMENT UNDERLAIN ; CARBON BIODEGRADABILITY ; PEEL PLATEAU ; NITROGEN AVAILABILITY ; LITTER DECOMPOSITION ; MASS-SPECTROMETER ; WATER CHEMISTRY ; SOIL CARBON ; THAW ; RIVER
WOS Research Area	Science Citation Index Expanded (SCI-EXPANDED)
WOS ID	WOS:000613330700002
Publisher	AMER GEOPHYSICAL UNION
Subtype	Article
Publication Place	WASHINGTON
EISSN	1944-9224
Funding Organization	Montana Agricultural Experimental Station (MAES project) [MONB00389] ; National Park Service via the Northwest Alaska ; National Park Service via Rocky Mountain Cooperative Ecosystem Study Units (CESUs) ; MSU Bayard Taylor Fellowship ; U.S. National Science Foundation (NSF) [1446328, 1846855, 1637459, 1916567, 1916565] ; program of the Netherlands Earth System Science Centre (NESSC) - Ministry of Education, Culture and Science (OCW) [024.002.001] ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; Polar Continental Shelf Program ; University of Alberta Northern Research Awards Program ; Northern Scientific Training Program ; NSF [1208732, 1754216, 1464392] ; NASA-ABoVE Project [14-14TE-0012 (NNX15AU07A)] ; USGS Biological Carbon Sequestration Program ; National Park Service Inventory and Monitoring program ; USGS Changing Arctic Ecosystems program ; National Science Foundation Division of Chemistry [DMR-1644779] ; State of Florida ; Institutional Development Awards (IDeA) from the National Institute of General Medical Sciences of the National Institutes of Health [P20GM103474, U54GM115371, 5P20GM104417]
Corresponding Author Email	stephanie.ewing@montana.edu ; benabbott@byu.edu
OA	Green Published, hybrid
Citation statistics	Cited Times:35[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.ibcas.ac.cn/handle/2S10CLM1/26725
Collection	植被与环境变化国家重点实验室
Affiliation	1.[Wologo, Ethan; Ewing, Stephanie; Klassen, Jane; Powell, Michaela M.] Montana State Univ, Dept Land Resources & Environm Sci, Bozeman, MT 59717 USA 2.Shakil, Sarah; Zolkos, Scott; Tank, Suzanne E.] Univ Alberta, Dept Biol Sci, Edmonton, AB, Canada 3.Zolkos, Scott; Holmes, Robert M.] Woods Hole Res Ctr, POB 296, Woods Hole, MA 02543 USA 4.Textor, Sadie; Spencer, Robert G. M.; Podgorski, David C.] Florida State Univ, Dept Earth Ocean & Atmospher Sci, Tallahassee, FL 32306 USA 5.Textor, Sadie; Spencer, Robert G. M.; Podgorski, David C.] Florida State Univ, Natl High Magnet Field Lab, Geochem Grp, Tallahassee, FL 32306 USA 6.Baker, Michelle A.] Utah State Univ, Dept Biol, Logan, UT 84322 USA 7.Baker, Michelle A.] Utah State Univ, Ecol Ctr, Logan, UT 84322 USA 8.O'Donnell, Jonathan A.] Natl Parks Serv, Arctic Network, Anchorage, AK USA 9.Wickland, Kimberly P.; Foks, Sydney S. W.] USGS, Water Resources Mission Area, Boulder, CO USA 10.Michigan State Univ, Dept Earth & Environm Sci, E Lansing, MI 48824 USA 11.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 12.Finnish Environm Inst SYKE, Joensuu, Finland 13.Dean, Joshua F.; Vonk, Jorien E.] Vrije Univ Amsterdam, Dept Earth Sci, Amsterdam, Netherlands 14.Dean, Joshua F.] Univ Liverpool, Sch Environm Sci, Liverpool, Merseyside, England 15.CNRS, Environm Ville Soc, UMR5600, Lyon, France 16.Howe, Jansen; Frei, Rebecca J.; Bratsman, Samuel P.; Abbott, Benjamin W.] Brigham Young Univ, Dept Plant & Wildlife Sci, Provo, UT 84602 USA 17.Frei, Rebecca J.] Univ Alberta, Dept Renewable Resources, Edmonton, AB, Canada
Recommended Citation GB/T 7714	Wologo, Ethan,Shakil, Sarah,Zolkos, Scott,et al. Stream Dissolved Organic Matter in Permafrost Regions Shows Surprising Compositional Similarities but Negative Priming and Nutrient Effects[J]. GLOBAL BIOGEOCHEMICAL CYCLES,2021,35(1).
APA	Wologo, Ethan.,Shakil, Sarah.,Zolkos, Scott.,Textor, Sadie.,Ewing, Stephanie.,...&Abbott, Benjamin W..(2021).Stream Dissolved Organic Matter in Permafrost Regions Shows Surprising Compositional Similarities but Negative Priming and Nutrient Effects.GLOBAL BIOGEOCHEMICAL CYCLES,35(1).
MLA	Wologo, Ethan,et al."Stream Dissolved Organic Matter in Permafrost Regions Shows Surprising Compositional Similarities but Negative Priming and Nutrient Effects".GLOBAL BIOGEOCHEMICAL CYCLES 35.1(2021).

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