Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Andreas Westergaard-Nielsen"'
Publikováno v:
Geoderma, Vol 452, Iss , Pp 117108- (2024)
Generally, with increasing elevation, there is a corresponding decrease in annual mean air and soil temperatures, resulting in an overall decrease in ecosystem carbon dioxide (CO2) exchange. However, there is a lack of knowledge on the variations in
Externí odkaz:
https://doaj.org/article/1b2994aa19f147118ab56be722eebd1e
Autor:
Ludovica D’Imperio, Bing-Bing Li, James M. Tiedje, Youmi Oh, Jesper Riis Christiansen, Sebastian Kepfer-Rojas, Andreas Westergaard-Nielsen, Kristian Koefoed Brandt, Peter E. Holm, Peiyan Wang, Per Ambus, Bo Elberling
Publikováno v:
Communications Earth & Environment, Vol 4, Iss 1, Pp 1-10 (2023)
Abstract In the Arctic, the spatiotemporal variation of net methane uptake in upland soils depends on unresolved interactive controls between edaphic and microbial factors not yet included in current models, underpinning the uncertainty of upscaling
Externí odkaz:
https://doaj.org/article/228acf6ee1cb490fa2c930d6763f5fc1
Publikováno v:
Geoderma, Vol 438, Iss , Pp 116632- (2023)
Seasonal snow cover has an important impact on the difference between soil- and air temperature because of the insulation effect, and is therefore a key parameter in ecosystem models. However, it is still uncertain how specific variations in soil moi
Externí odkaz:
https://doaj.org/article/f4474f43a7304a55a801f264816581f7
Autor:
Angela Luisa Prendin, Signe Normand, Marco Carrer, Nanna Bjerregaard Pedersen, Henning Matthiesen, Andreas Westergaard‐Nielsen, Bo Elberling, Urs Albert Treier, Jørgen Hollesen
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-12 (2022)
Abstract The combined effects of climate change and nutrient availability on Arctic vegetation growth are poorly understood. Archaeological sites in the Arctic could represent unique nutrient hotspots for studying the long-term effect of nutrient enr
Externí odkaz:
https://doaj.org/article/e2caa324bd43476fa3a373eef751af42
Publikováno v:
Environmental Research Letters, Vol 15, Iss 3, p 034025 (2020)
Nitrogen availability in Arctic ecosystems is a key driver for biological activity, including plant, growth and thereby directly linked to the greening of the Arctic. Here, we model the redistribution of meltwater following spring snowmelt as well as
Externí odkaz:
https://doaj.org/article/371444a020664df7b194ffee6d071e96
Autor:
Efrén López-Blanco, Marcin Jackowicz-Korczynski, Mikhail Mastepanov, Kirstine Skov, Andreas Westergaard-Nielsen, Mathew Williams, Torben R Christensen
Publikováno v:
Environmental Research Letters, Vol 15, Iss 9, p 094007 (2020)
Arctic tundra is a globally important store for carbon (C). However, there is a lack of reference sites characterising C exchange dynamics across annual cycles. Based on the Greenland Ecosystem Monitoring (GEM) programme, here we present 9–11 years
Externí odkaz:
https://doaj.org/article/61bc3c6386794149b8f92c934ce27728
Seasonal snow cover is a key control on winter soil temperature (Tsoil) in the Arctic because of its insulating effects. It is still uncertain how variations in soil moisture, climate warming, and vegetation types affect this insulating effect and th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::615fa22d87683ae33bd73886abb13c1f
https://doi.org/10.5194/egusphere-egu23-12055
https://doi.org/10.5194/egusphere-egu23-12055
Autor:
Bo Elberling, Weiya Zhang, M. Jammet, Thomas Friborg, Anders Michelsen, Magnus Lund, Alistair McConnell, Per-Erik Jansson, Andreas Westergaard-Nielsen, Charlotte Sigsgaard
Publikováno v:
Zhang, W, Jansson, P E, Sigsgaard, C, McConnell, A, Jammet, M M, Westergaard-Nielsen, A, Lund, M, Friborg, T, Michelsen, A & Elberling, B 2019, ' Model-data fusion to assess year-round CO 2 fluxes for an arctic heath ecosystem in West Greenland (69°N) ', Agricultural and Forest Meteorology, vol. 272-273, no. July, pp. 176-186 . https://doi.org/10.1016/j.agrformet.2019.02.021
Quantifying net CO 2 exchange (NEE)of arctic terrestrial ecosystems in response to changes in climatic and environmental conditions is central to understanding ecosystem functioning and assessing potential feedbacks of the carbon cycle to future clim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7b7ff9cd0bb5c45289fabf2c26df26e
https://doi.org/10.1016/j.agrformet.2019.02.021
https://doi.org/10.1016/j.agrformet.2019.02.021
Autor:
Andreas Westergaard-Nielsen, Jørgen Hollesen, Signe Normand, Nanna Bjerregaard Pedersen, Marco Carrer, Mario Pividori, Mojtaba Karami, Angela Luisa Prendin, Bo Elberling, Urs A. Treier
Publikováno v:
Prendin, A L, Carrer, M, Karami, M, Hollesen, J, Bjerregaard Pedersen, N, Pividori, M, Treier, U A, Westergaard-Nielsen, A, Elberling, B & Normand, S 2020, ' Immediate and carry-over effects of insect outbreaks on vegetation growth in West Greenland assessed from cells to satellite ', Journal of Biogeography, vol. 47, no. 1, pp. 87-100 . https://doi.org/10.1111/jbi.13644
Prendin, A L, Carrer, M, Karami, M, Hollesen, J, Pedersen, N B, Pividori, M, Treier, U A, Westergaard-Nielsen, A, Elberling, B & Normand, S 2020, ' Immediate and carry-over effects of insect outbreaks on vegetation growth in West Greenland assessed from cells to satellite ', Journal of Biogeography, vol. 47, no. 1, pp. 87-100 . https://doi.org/10.1111/jbi.13644
Prendin, A L, Carrer, M, Karami, M, Hollesen, J, Pedersen, N B, Pividori, M, Treier, U A, Westergaard-Nielsen, A, Elberling, B & Normand, S 2020, ' Immediate and carry-over effects of insect outbreaks on vegetation growth in West Greenland assessed from cells to satellite ', Journal of Biogeography, vol. 47, no. 1, pp. 87-100 . https://doi.org/10.1111/jbi.13644
Aim Tundra ecosystems are highly vulnerable to climate change, and climate-growth responses of Arctic shrubs are variable and altered by microsite environmental conditions and biotic factors. With warming and drought during the growing season, insect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f22851f8edeb5add0e5032b30790d3a
https://doi.org/10.1111/jbi.13644
https://doi.org/10.1111/jbi.13644
Autor:
Bernd Etzelmüller, Jaroslav Obu, Artem Khomutov, Santosh Panda, Antoni G. Lewkowicz, Jambaljav Yamkhin, Avirmed Dashtseren, Sebastian Westermann, Vladimir E. Romanovsky, Defu Zou, Andreas Westergaard-Nielsen, Bo Elberling, Tonghua Wu, Hanne H. Christiansen, Robert G. Way, Reynald Delaloye, Marina Leibman, Andreas Kääb, Annett Bartsch, Alexander Kholodov, Nikolai M. Berdnikov
Publikováno v:
Obu, J, Westermann, S, Bartsch, A, Berdnikov, N, Christiansen, H H, Dashtseren, A, Delaloye, R, Elberling, B, Etzelmueller, B, Kholodov, A, Khomutov, A, Kaab, A, Leibman, M O, Lewkowicz, A G, Panda, S K, Romanovsky, V, Way, R G, Westergaard-Nielsen, A, Wu, T, Yamkhin, J & Zou, D 2019, ' Northern Hemisphere permafrost map based on TTOP modelling for 2000-2016 at 1 km 2 scale ', Earth-Science Reviews, vol. 193, pp. 299-316 . https://doi.org/10.1016/j.earscirev.2019.04.023
Permafrost is a key element of the cryosphere and an essential climate variable in the Global Climate Observing System. There is no remote-sensing method available to reliably monitor the permafrost thermal state. To estimate permafrost distribution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bddca7454e384c211ca7aaa7597a65d3
https://doi.org/10.1016/j.earscirev.2019.04.023
https://doi.org/10.1016/j.earscirev.2019.04.023