Sökning: onr:"swepub:oai:DiVA.org:lnu-101675" > Divergent species-s...
Fältnamn | Indikatorer | Metadata |
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000 | 04210naa a2200469 4500 | |
001 | oai:DiVA.org:lnu-101675 | |
003 | SwePub | |
008 | 210326s2021 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-1016752 URI |
024 | 7 | a https://doi.org/10.1111/gcb.155432 DOI |
040 | a (SwePub)lnu | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Warren, Jeffrey M.u Oak Ridge National Laboratory, USA4 aut |
245 | 1 0 | a Divergent species-specific impacts of whole ecosystem warming and elevated CO2 on vegetation water relations in an ombrotrophic peatland |
264 | c 2021-02-22 | |
264 | 1 | b John Wiley & Sons,c 2021 |
338 | a print2 rdacarrier | |
520 | a Boreal peatland forests have relatively low species diversity and thus impacts of climate change on one or more dominant species could shift ecosystem function. Despite abundant soil water availability, shallowly rooted vascular plants within peatlands may not be able to meet foliar demand for water under drought or heat events that increase vapor pressure deficits while reducing near surface water availability, although concurrent increases in atmospheric CO2 could buffer resultant hydraulic stress. We assessed plant water relations of co-occurring shrub (primarily Rhododendron groenlandicum and Chamaedaphne calyculata) and tree (Picea mariana and Larix laricina) species prior to, and in response to whole ecosystem warming (0 to +9 degrees C) and elevated CO2 using 12.8-m diameter open-top enclosures installed within an ombrotrophic bog. Water relations (water potential [psi], turgor loss point, foliar and root hydraulic conductivity) were assessed prior to treatment initiation, then psi and peak sap flow (trees only) assessed after 1 or 2 years of treatments. Under the higher temperature treatments, L. laricina psi exceeded its turgor loss point, increased its peak sap flow, and was not able to recover psi overnight. In contrast, P. mariana operated below its turgor loss point and maintained constant psi and sap flow across warming treatments. Similarly, C. calyculata psi stress increased with temperature while R. groenlandicum psi remained at pretreatment levels. The more anisohydric behavior of L. laricina and C. calyculata may provide greater net C uptake with warming, while the more conservative P. mariana and R. groenlandicum maintained greater hydraulic safety. These latter species also responded to elevated CO2 by reduced psi stress, which may also help limit hydraulic failure during periods of extreme drought or heat in the future. Along with Sphagnum moss, the species-specific responses of peatland vascular communities to drier or hotter conditions will shape boreal peatland composition and function in the future. | |
650 | 7 | a LANTBRUKSVETENSKAPERx Lantbruksvetenskap, skogsbruk och fiskex Skogsvetenskap0 (SwePub)401042 hsv//swe |
650 | 7 | a AGRICULTURAL SCIENCESx Agriculture, Forestry and Fisheriesx Forest Science0 (SwePub)401042 hsv//eng |
653 | a black spruce | |
653 | a boreal forest | |
653 | a climate change | |
653 | a hydraulic stress | |
653 | a sap flow | |
653 | a water potential | |
653 | a Forestry and Wood Technology | |
653 | a Skog och träteknik | |
700 | 1 | a Jensen, Anna M.,d 1978-u Linnéuniversitetet,Institutionen för skog och träteknik (SOT)4 aut0 (Swepub:lnu)anjeaa |
700 | 1 | a Ward, Eric J.u US Geological Survey, USA4 aut |
700 | 1 | a Guha, Anirbanu Oak Ridge National Laboratory, USA4 aut |
700 | 1 | a Childs, Joanneu Oak Ridge National Laboratory, USA4 aut |
700 | 1 | a Wullschleger, Stan D.u Oak Ridge National Laboratory, USA4 aut |
700 | 1 | a Hanson, Paul J.u Oak Ridge National Laboratory, USA4 aut |
710 | 2 | a Oak Ridge National Laboratory, USAb Institutionen för skog och träteknik (SOT)4 org |
773 | 0 | t Global Change Biologyd : John Wiley & Sonsg 27, s. 1820-1835q 27<1820-1835x 1354-1013x 1365-2486 |
856 | 4 | u https://www.osti.gov/biblio/1779150 |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-101675 |
856 | 4 8 | u https://doi.org/10.1111/gcb.15543 |
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