The contribution of wildland fire emissions to deposition in the US: implications for tree growth and survival in the Northwest

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dc.contributor.authorKoplitz, Shannon N.en
dc.contributor.authorNolte, Christopher G.en
dc.contributor.authorSabo, Robert D.en
dc.contributor.authorClark, Christopher M.en
dc.contributor.authorHorn, Kevin J.en
dc.contributor.authorThomas, R. Quinnen
dc.contributor.authorNewcomer-Johnson, Tamara A.en
dc.contributor.departmentForest Resources and Environmental Conservationen
dc.date.accessioned2021-05-26T14:11:01Zen
dc.date.available2021-05-26T14:11:01Zen
dc.date.issued2021-02en
dc.description.abstractEcosystems require access to key nutrients like nitrogen (N) and sulfur (S) to sustain growth and healthy function. However, excessive deposition can also damage ecosystems through nutrient imbalances, leading to changes in productivity and shifts in ecosystem structure. While wildland fires are a known source of atmospheric N and S, little has been done to examine the implications of wildland fire deposition for vulnerable ecosystems. We combine wildland fire emission estimates, atmospheric chemistry modeling, and forest inventory data to (a) quantify the contribution of wildland fire emissions to N and S deposition across the U S, and (b) assess the subsequent impacts on tree growth and survival rates in areas where impacts are likely meaningful based on the relative contribution of fire to total deposition. We estimate that wildland fires contributed 0.2 kg N ha(-1) yr(-1) and 0.04 kg S ha(-1) yr(-1) on average across the U S during 2008-2012, with maxima up to 1.4 kg N ha(-1) yr(-1) and 0.6 kg S ha(-1) yr(-1) in the Northwest representing over similar to 30% of total deposition in some areas. Based on these fluxes, exceedances of S critical loads as a result of wildland fires are minimal, but exceedances for N may affect the survival and growth rates of 16 tree species across 4.2 million hectares, with the most concentrated impacts occurring in Oregon, northern California, and Idaho. Understanding the broader environmental impacts of wildland fires in the U S will inform future decision making related to both fire management and ecosystem services conservation.en
dc.description.sponsorshipIntramural EPA [EPA999999] Funding Source: Medlineen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1088/1748-9326/abd26een
dc.identifier.issn1748-9326en
dc.identifier.issue2en
dc.identifier.other24028en
dc.identifier.pmid33747119en
dc.identifier.urihttp://hdl.handle.net/10919/103518en
dc.identifier.volume16en
dc.language.isoenen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectwildland firesen
dc.subjectN depositionen
dc.subjectecosystem impactsen
dc.titleThe contribution of wildland fire emissions to deposition in the US: implications for tree growth and survival in the Northwesten
dc.title.serialEnvironmental Research Lettersen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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