Search: onr:"swepub:oai:DiVA.org:su-171692" > Microbial carbon an...
Fältnamn | Indikatorer | Metadata |
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000 | 04645naa a2200505 4500 | |
001 | oai:DiVA.org:su-171692 | |
003 | SwePub | |
008 | 190819s2019 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1716922 URI |
024 | 7 | a https://doi.org/10.1016/j.soilbio.2019.05.0022 DOI |
040 | a (SwePub)su | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Fuchslueger, Lucia4 aut |
245 | 1 0 | a Microbial carbon and nitrogen cycling responses to drought and temperature in differently managed mountain grasslands |
264 | 1 | b Elsevier BV,c 2019 |
338 | a print2 rdacarrier | |
520 | a Grassland management can modify soil microbial carbon (C) and nitrogen (N) cycling, affecting the resistance to extreme weather events, which are predicted to increase in frequency and magnitude in the near future. However, effects of grassland management on microbial C and N cycling and their responses to extreme weather events, such as droughts and heatwaves, have rarely been tested in a combined approach. We therefore investigated whether grassland management affects microbial C and N cycling responses to drought and temperature manipulation. We collected soils from in situ drought experiments conducted in an extensively managed and an abandoned mountain grassland and incubated them at two temperature levels. We measured microbial respiration and substrate incorporation, as well as gross rates of organic and inorganic N cycling to estimate microbial C and N use efficiencies (CUE and NUE). The managed grassland was characterized by lower microbial biomass, lower fungi to bacteria ratio, and higher microbial CUE, but only slightly different microbial NUE. At both sites drought induced a shift in microbial community composition driven by an increase in Gram-positive bacterial abundance. Drought significantly reduced C substrate respiration and incorporation by microbes at both sites, while microbial CUE remained constant. In contrast, drought increased gross rates of N mineralization at both sites, whereas gross amino acid uptake rates only marginally changed. We observed a significant direct, as well as interactive effect between land management and drought on microbial NUE. Increased temperatures significantly stimulated microbial respiration and reduced microbial CUE independent of drought or land management. Although microbial N processing rates showed no clear response, microbial NUE significantly decreased at higher temperatures. In summary in our study, microbial CUE, in particular respiration, is more responsive to temperature changes. Although N processing rates were stronger responding to drought than to temperature microbial NUE was affected by both drought and temperature increase. We conclude that direct effects of drought and heatwaves can induce different responses in soil microbial C and N cycling similarly in the studied land management systems. | |
650 | 7 | a LANTBRUKSVETENSKAPERx Lantbruksvetenskap, skogsbruk och fiskex Markvetenskap0 (SwePub)401062 hsv//swe |
650 | 7 | a AGRICULTURAL SCIENCESx Agriculture, Forestry and Fisheriesx Soil Science0 (SwePub)401062 hsv//eng |
650 | 7 | a NATURVETENSKAPx Biologix Mikrobiologi0 (SwePub)106062 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Biological Sciencesx Microbiology0 (SwePub)106062 hsv//eng |
650 | 7 | a NATURVETENSKAPx Biologix Ekologi0 (SwePub)106112 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Biological Sciencesx Ecology0 (SwePub)106112 hsv//eng |
653 | a Microbial metabolism | |
653 | a Microbial carbon use efficiency | |
653 | a Microbial nitrogen use efficiency | |
653 | a Grassland | |
653 | a Drought | |
653 | a Temperature response | |
700 | 1 | a Wild, Birgitu Stockholms universitet,Institutionen för miljövetenskap och analytisk kemi,University of Vienna, Austria4 aut0 (Swepub:su)bwild |
700 | 1 | a Mooshammer, Maria4 aut |
700 | 1 | a Takriti, Mounir4 aut |
700 | 1 | a Kienzl, Sandra4 aut |
700 | 1 | a Knoltsch, Anna4 aut |
700 | 1 | a Hofhansl, Florian4 aut |
700 | 1 | a Bahn, Michael4 aut |
700 | 1 | a Richter, Andreas4 aut |
710 | 2 | a Stockholms universitetb Institutionen för miljövetenskap och analytisk kemi4 org |
773 | 0 | t Soil Biology and Biochemistryd : Elsevier BVg 135, s. 144-153q 135<144-153x 0038-0717x 1879-3428 |
856 | 4 | u http://pure.iiasa.ac.at/id/eprint/15896/1/1-s2.0-S0038071719301361-main.pdf |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-171692 |
856 | 4 8 | u https://doi.org/10.1016/j.soilbio.2019.05.002 |
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