Zobrazeno 1 - 10
of 122
pro vyhledávání: '"L. Hörtnagl"'
Autor:
L. Scapucci, A. Shekhar, S. Aranda-Barranco, A. Bolshakova, L. Hörtnagl, M. Gharun, N. Buchmann
Publikováno v:
Biogeosciences, Vol 21, Pp 3571-3592 (2024)
With global warming, forests are increasingly exposed to “compound soil and atmospheric drought” (CSAD) events, characterized by low soil water content (SWC) and high vapour pressure deficit (VPD). Such CSAD events trigger responses in both ecosy
Externí odkaz:
https://doaj.org/article/47f53102c1a446f380be2c1647390662
Autor:
K. B. Delwiche, S. H. Knox, A. Malhotra, E. Fluet-Chouinard, G. McNicol, S. Feron, Z. Ouyang, D. Papale, C. Trotta, E. Canfora, Y.-W. Cheah, D. Christianson, Ma. C. R. Alberto, P. Alekseychik, M. Aurela, D. Baldocchi, S. Bansal, D. P. Billesbach, G. Bohrer, R. Bracho, N. Buchmann, D. I. Campbell, G. Celis, J. Chen, W. Chen, H. Chu, H. J. Dalmagro, S. Dengel, A. R. Desai, M. Detto, H. Dolman, E. Eichelmann, E. Euskirchen, D. Famulari, K. Fuchs, M. Goeckede, S. Gogo, M. J. Gondwe, J. P. Goodrich, P. Gottschalk, S. L. Graham, M. Heimann, M. Helbig, C. Helfter, K. S. Hemes, T. Hirano, D. Hollinger, L. Hörtnagl, H. Iwata, A. Jacotot, G. Jurasinski, M. Kang, K. Kasak, J. King, J. Klatt, F. Koebsch, K. W. Krauss, D. Y. F. Lai, A. Lohila, I. Mammarella, L. Belelli Marchesini, G. Manca, J. H. Matthes, T. Maximov, L. Merbold, B. Mitra, T. H. Morin, E. Nemitz, M. B. Nilsson, S. Niu, W. C. Oechel, P. Y. Oikawa, K. Ono, M. Peichl, O. Peltola, M. L. Reba, A. D. Richardson, W. Riley, B. R. K. Runkle, Y. Ryu, T. Sachs, A. Sakabe, C. R. Sanchez, E. A. Schuur, K. V. R. Schäfer, O. Sonnentag, J. P. Sparks, E. Stuart-Haëntjens, C. Sturtevant, R. C. Sullivan, D. J. Szutu, J. E. Thom, M. S. Torn, E.-S. Tuittila, J. Turner, M. Ueyama, A. C. Valach, R. Vargas, A. Varlagin, A. Vazquez-Lule, J. G. Verfaillie, T. Vesala, G. L. Vourlitis, E. J. Ward, C. Wille, G. Wohlfahrt, G. X. Wong, Z. Zhang, D. Zona, L. Windham-Myers, B. Poulter, R. B. Jackson
Publikováno v:
Earth System Science Data, Vol 13, Pp 3607-3689 (2021)
Methane (CH4) emissions from natural landscapes constitute roughly half of global CH4 contributions to the atmosphere, yet large uncertainties remain in the absolute magnitude and the seasonality of emission quantities and drivers. Eddy covariance (E
Externí odkaz:
https://doaj.org/article/1a0b0d8493814f1ab3b2b9bac057e320
Publikováno v:
Biogeosciences, Vol 15, Pp 5519-5543 (2018)
Replacing fertiliser nitrogen with biologically fixed nitrogen (BFN) through legumes has been suggested as a strategy for nitrous oxide (N2O) mitigation from intensively managed grasslands. While current literature provides evidence for an N2O emi
Externí odkaz:
https://doaj.org/article/82533b033c9b4be6a1a1c77efcea554c
Autor:
C. Emmel, A. Winkler, L. Hörtnagl, A. Revill, C. Ammann, P. D'Odorico, N. Buchmann, W. Eugster
Publikováno v:
Biogeosciences, Vol 15, Pp 5377-5393 (2018)
Croplands are involved in the exchange of carbon dioxide (CO2) between the atmosphere and the biosphere. Furthermore, soil carbon (C) stocks play an important role in soil fertility. It is thus of great interest to know whether intensively managed
Externí odkaz:
https://doaj.org/article/8236726ae3f443bb9db359a84027e063
Autor:
L. Wingate, J. Ogée, E. Cremonese, G. Filippa, T. Mizunuma, M. Migliavacca, C. Moisy, M. Wilkinson, C. Moureaux, G. Wohlfahrt, A. Hammerle, L. Hörtnagl, C. Gimeno, A. Porcar-Castell, M. Galvagno, T. Nakaji, J. Morison, O. Kolle, A. Knohl, W. Kutsch, P. Kolari, E. Nikinmaa, A. Ibrom, B. Gielen, W. Eugster, M. Balzarolo, D. Papale, K. Klumpp, B. Köstner, T. Grünwald, R. Joffre, J.-M. Ourcival, M. Hellstrom, A. Lindroth, C. George, B. Longdoz, B. Genty, J. Levula, B. Heinesch, M. Sprintsin, D. Yakir, T. Manise, D. Guyon, H. Ahrends, A. Plaza-Aguilar, J. H. Guan, J. Grace
Publikováno v:
Biogeosciences, Vol 12, Iss 20, Pp 5995-6015 (2015)
Plant phenological development is orchestrated through subtle changes in photoperiod, temperature, soil moisture and nutrient availability. Presently, the exact timing of plant development stages and their response to climate and management practices
Externí odkaz:
https://doaj.org/article/aa21bea75205487fae64e11d3b839ef4
Autor:
G. Wohlfahrt, C. Amelynck, C. Ammann, A. Arneth, I. Bamberger, A. H. Goldstein, L. Gu, A. Guenther, A. Hansel, B. Heinesch, T. Holst, L. Hörtnagl, T. Karl, Q. Laffineur, A. Neftel, K. McKinney, J. W. Munger, S. G. Pallardy, G. W. Schade, R. Seco, N. Schoon
Publikováno v:
Atmospheric Chemistry and Physics, Vol 15, Iss 13, Pp 7413-7427 (2015)
Methanol is the second most abundant volatile organic compound in the troposphere and plays a significant role in atmospheric chemistry. While there is consensus about the dominant role of living plants as the major source and the reaction with OH as
Externí odkaz:
https://doaj.org/article/c8856006a4964dbea814cc5cb666084b
Autor:
L. Hörtnagl, G. Wohlfahrt
Publikováno v:
Biogeosciences, Vol 11, Iss 24, Pp 7219-7236 (2014)
The methane (CH4) and nitrous oxide (N2O) exchange of a temperate mountain grassland near Neustift, Austria, was measured during 2010–2012 over a time period of 22 months using the eddy covariance method. Exchange rates of both compounds at the sit
Externí odkaz:
https://doaj.org/article/3c49dab0c29c411aa1f5306b05f2e7b3
Autor:
L. Hörtnagl, I. Bamberger, M. Graus, T. M. Ruuskanen, R. Schnitzhofer, M. Walser, A. Unterberger, A. Hansel, G. Wohlfahrt
Publikováno v:
Atmospheric Chemistry and Physics, Vol 14, Iss 11, Pp 5369-5391 (2014)
An overview of acetaldehyde exchange above a managed temperate mountain grassland in Austria over four growing seasons is presented. The meadow acted as a net source of acetaldehyde in all 4 years, emitting between 7 and 28 mg C m−2 over the whole
Externí odkaz:
https://doaj.org/article/0e4774ffebf248d08ca75287f24fdb4a
Publikováno v:
Biogeosciences, Vol 11, Iss 8, Pp 2429-2442 (2014)
Up to now the limited knowledge about the exchange of volatile organic compounds (VOCs) between the biosphere and the atmosphere is one of the factors which hinders more accurate climate predictions. Complete long-term flux data sets of several VOCs
Externí odkaz:
https://doaj.org/article/330193cfc57743ec918112095adc5168
Autor:
T. M. Ruuskanen, M. Müller, R. Schnitzhofer, T. Karl, M. Graus, I. Bamberger, L. Hörtnagl, F. Brilli, G. Wohlfahrt, A. Hansel
Publikováno v:
Atmospheric Chemistry and Physics, Vol 11, Iss 2, Pp 611-625 (2011)
Eddy covariance (EC) is the preferable technique for flux measurements since it is the only direct flux determination method. It requires a continuum of high time resolution measurements (e.g. 5–20 Hz). For volatile organic compounds (VOC) soft ion
Externí odkaz:
https://doaj.org/article/cab8855eb39d48d78b799dea64e00078