TEN YEARS REPORT 2012-2021 CENPERM Center for Permafrost TEN YEARS REPORT 2012-2021 CENPERM Center for Permafrost Field sites Brønlundhus Qaanaaq Svalbard Longyearbyen Greenland Zackenberg Disko Qajaa Sweden Kangerlussuaq Nuuk Narsarsuaq Abisko Sermilik Directors welcome Visions and aims Highlights/Højdepunk ter 2012-2021 Ar ticles 2013-2020 CENPERM publications 2012-2021 Educational activities PhD and graduate student projects National and international cooperation Ex ternal funding CENPERM staff 2 4 6 46 62 90 92 102 106 110 contents Directors welcome Professor Bo Elberling Director of CENPERM Center for Permafrost (CENPERM) has now been running for ten years. These have been exiting years, working together in the field, and at our physical center at Øster Voldgade 10 in Copenhagen (University of Copenhagen) in the labs and in I would like to warmly thank the rest of the center leadership group, Anders Michelsen, Anders Priemé and Carsten Suhr Jacobsen, who were all key applicants for the first phase starting in 2012. Many thanks also to Paul Christiansen, Maja H. Wahlgren, Kent Pørksen and Mathias Madsen for a huge cont Visions and aims Center for Permafrost Microbial activity Plant ecology CENPERM Permafrost soil & landscape dynamics CENPERM integrates multidisciplinary research of biogeochemical and physical processes in a climate-vegetation-soil-microorganism-permafrost approach in transects across the major The new site with experiment al burning on Disko Island in West Greenland. Photo: Sophie E . Elberling. CENPERM Ten Years Report 2012-2021 5 Highlights 2012 On 1 of June 2012 Center for Permafrost (CENPERM) was officially opened as a Center of Excellence funded by The Danish National Research Foundation with supplementary funding from the University of Copenhagen. The main activities since the opening have been the physical and organizat mented with thermistor strings. An additional drill campaign was completed down to 30 m at Kim Fjelde in Peary Land in cooperation with GEUS and instrumented with thermistor strings. These two drill campaigns resulted in the deepest permafrost holes instrumented with thermistor strings loggers in NE Højdepunkter 2012 Den 1. juni 2012 blev Center for Permafrost (CENPERM) officielt åbnet som et Center of Excellence finansieret af Danmarks Grundforskningsfond med supplerende finansiering fra Københavns Universitet. Siden åbningen har de vigtigste aktiviteter været etableringen af de fysiske og org Kernerne er analyseret med hensyn til stratigrafi, kornstørrelse, isindhold og istype samt adskillige kemiske parametre. To borehuller med en dybde på mere end 20 m, blev instrumenteret med termistorstrenge. Yderligere blev en supplerende borekampagne gennemført ned til 30 m ved Kim Fjelde i Peary L Highlights 2013 Following the first year representing CENPERMs establishment in Copenhagen, the year 2013 will be remembered for the marked efforts in Greenland to ensure the establishment of all long-term initiatives in the field, including the establishment of snow fences and the start-up of vario precipitation and increasing snow depths. This has several implications on an ecosystem scale, including changes in the melt-out dates. But shorter warming events during the winter complicate the direct effect of increasing snow depths. This has been studied in a snow fence experiment by Semenchuk e Højdepunkter 2013 Efter et første år, som var præget af CENPERMs etablering på Øster Voldgade 10 i København, har 2013 budt på en betydelig tilstedeværelse i Grønland for at sikre etableringen af alle langsigtede tiltag i felten, herunder etablering af snehegnsfelter samt opstart af en række højrisi Den arktiske vinter vil forandres i takt med globale klimaændringer. Det forventes, at fremtiden vil byde på mere vinternedbør og således øgede snedybder, som kan få betydning for bl.a. længden af den snefrie periode. Korte varmeperioder i løbet af vinteren komplicerer imidlertid den direkte effekt Highlights 2014 Now half way into the 6-year funding period, we are very pleased to see a range of our scientific papers published within the Nature Publishing Group, representing the contrasting scale from molecules to landscape/regions, which is a key issue addressed at CENPERM. The finest scale i ically altered the methane balance so that the tundra turned from being a sink into a source of methane, just five years after the start of the experiment. These results show that plants play a crucial role in the stabilization of permafrost. Future climate change is likely to act as a driver for mi Højdepunkter 2014 CENPERM er nu halvvejs inde i finansieringsperioden på seks år. Det er med glæde, at vi kan konstatere at en række af vores helt centrale artikler nu er blevet publiceret i Nature Publishing Group. Det inkluderer artikler der repræsenterer hele skalaen fra molekyle til landskab hvi temer og dermed påvirke atmosfærens indhold af CH4 i global skala. Jørgensen et al. (2014) konkluderer i Nature Geoscience, at de isfrie områder i Nordøstgrønland fungerer som et dræn for atmosfærisk metan og at dette dræn sandsynligvis vil blive forstærket i et fremtidigt varmere klima. Mange arkti Highlights 2015 Highlights of 2015 include intensive field work at 6 sites in Greenland and new snow fences being built and instrumented in South Greenland. It has also been a productive year in terms of scientific papers. The following four papers published in 2015 highlight two issues: that ecosys tially to study seasonal changes. We observed a significant positive effect of deeper snow on winter mass loss, which was considered a result of observed higher soil winter temperatures and corresponding increased winter microbial litter decomposition in deep snow plots. In contrast, warming reduced Højdepunkter 2015 Højdepunkterne i 2015 omfatter intensivt feltarbejde ved 6 lokaliteter i Grønland samt opsætning og instrumentering af nye snehegn i Sydgrønland. Det har også været et produktivt år i forhold til videnskabelige artikler. De følgende 4 artikler er udgivet i 2015 og fremhæver 2 emner observerede højere vinterjordtemperaturer og tilsvarende øget mikrobiel omsætning af plante-rester i felter med dyb sne. I modsætning hertil resulterede opvarmning i et reduceret massetab af planterester om foråret, sandsynligvis fordi de tørre forhold om foråret kan have udtørret jordens øverste la Highlights 2016 Highlights of 2016 include intensive fieldwork on land and sea, as well as detailed laboratory experiments at CENPERM in Copenhagen. The following four papers published in 2016 highlight the benefits of taking a multidisciplinary approach to the work. 1. The concentration of methane the flocculation mechanisms when examining fluxes of meltwater transported iron in polar regions today and in the future, and underlines the influence of terrestrial hotspots on the nutrient and solute cycles in Arctic coastal waters. 4. Generating meaningful greenhouse gas (GHG) emissions targets r Højdepunkter 2016 Højdepunkterne i 2016 inkluderer intenst feltarbejde til lands og til vands, kombineret med detaljerede laboratorieeksperimenter ved CENPERM i København. Følgende fire artikler fra 2016 understreger fordelene og styrken ved at arbejde multidisciplinært. 1. Koncentrationen af metan betydningen af terrestriske hotspots i forhold til kredsløbene af næringsstoffer og opløste stoffer i de kystnære arktiske farvande. 4. Udpegningen af meningsfulde mål for udledningen af drivhusgasser (GHG) kræver forståelse af dynamikken i Jordens økosystemer og fremskrivninger af systemernes respo Highlights 2017 CENPERM highlights of 2017 include intensive fieldwork combined with detailed analyses of remote sensing products. The following four papers published in 2017 highlight the benefits of working multi-disciplinarily and performing both up- and downscaling. Scaling matters. The studies wet heath subarctic ecosystem. The study was directly linked to Pedersens MSc thesis work at CENPERM. The study site is in Northern Sweden and represents a dominant ecosystem type found across the circumpolar region. The study demonstrates the sensitivity and a surprising capacity throughout the ent Højdepunkter 2017 Højdepunkterne for CENPERM i 2017 omfatter flere eksempler på hvor feltarbejde er blevet kombineret med brug og analyse af remote sensing. Følgende fire publikationer offentliggjort i 2017, belyser fordelene ved at arbejde tværfagligt og inkludere både en op- og nedskalering. Studi her er både bakterier og svampe primære nedbrydere. For at vurdere, hvordan sæsonernes klimaforandringer påvirker svampesamfundene og deres funktion, blev der inkuberet løv af Betula glandulosa på to lavtliggende naboområder i Arktis med forskellig jordfugtighed: tør buskhede og våd tundra på Disko Highlights 2018 CENPERM highlights of 2018 include examples of intensive fieldwork and laboratory incubations and how these two components can be integrated in process modelling. Three papers below highlight the benefits of plot level-based studies of volatile organic compound (VOC) production, mult budget for a typical and wide-spread heathland-type ecosystem in Greenland. Two main results can be highlighted: (1) more than 13% of the carbon turnover measured as respiration occurs during the non-growing season and (2) the ecosystem is overall a weak C sink without any significant changes to be Højdepunkter 2018 Højdepunkterne for CENPERM i 2018 omfatter tre eksempler på intensivt feltarbejde og laboratorie-inkubationer, samt hvordan disse to komponenter kan integreres i procesmodellering. De udvalgte artikler beskæftiger sig med studier af (1) produktion af flygtige organiske forbindelser der er en typisk landskabstype for store dele af Grønland. To hovedresultater kan fremhæves: (1) mere end 13 % af kulstofomsætningen, målt som respiration, sker uden for vækstsæsonen, (2) økosystemets årlige kulstofregnskab viser et lille optag, som har varieret i perioden 20002014, dog uden nogen s Highlights 2019 In 2019 two publications from CENPERM highlighted the importance of year-round measurements of carbon (C) fluxes. One study is based on detailed field and model work from the CENPERM key site at Disko in West Greenland; the other study is a multi-site circumpolar international collab Two new s tudies highlight the impor tance of year -round measurements , not leas t dur ing the long winter season. Winter measurements at Disko near Arc tic Station produced data used in both process modelling and CENPERM circumpolar es timates of regional impor tance of winter measurements . Photo Højdepunkter 2019 To CENPERM publikationer fra 2019 understreger vigtigheden af at måle både optag og frigivelse af kulstof (C) året rundt i arktiske økosystemer. Det ene studie er baseret på et detaljeret felt- og modelarbejde fra CENPERMs primære feltområde på Disko-øen i Vestgrønland. Det andet s (RCP 4.5) og med 41 % i et uændret emissionsscenarie (RCP 8.5). Resultaterne angiver en basislinje for vinter-CO2-emissioner fra nordlige terrestriske regioner og indikerer, at et forøget CO2-tab fra jorden på grund af vinteropvarmning kan ændre den samlede kulstofbalance på sigt. To nye under søg Highlights 2020 Highlights 2020 is dedicated to the PhDstudents of CENPERM. The students, despite Covid-19 and continued difficulties, have kept their motivation levels high and been able to continue their research, working intensively on specific projects, and some defended online. Three multidisci 3. Climate change threatens both natural as well as many well-preserved archaeological sites. In Archaeometry Fenger-Nielsen et al. (2020 present the first Arctic multi-threat assessment focusing on the Nuuk region of Greenland. In this region, more than 300 archaeological sites are already threaten Højdepunkter 2020 Højdepunkter 2020 er dedikeret til vores ph.d.-studerende ved CENPERM. På trods udfordringerne som følge af Covid-19 restriktionerne, har de ph.d.-studerende bevaret motivationen på et højt niveau, fortsat deres forskning, afsluttet diverse delprojekter, og nogle har måtte forsvare 3. Klimaforandringer truer de velbevarede arkæologiske områder i Arktis. I Archaeometry præsenterer Fenger-Nielsen et al. (2020) det første forsøg på i en arktisk sammenhæng, at sammenholde de mange trusler i en samlet trusselvurdering med fokus på Nuuk-regionen i Grønland. I denne region er der mer Highlights 2021 The year 2021 has been dominated by new activities, new external funded projects and ongoing fieldwork despite of that CENPERM is running on its last year and the many Covid-19 restrictions. Almost all planned field work was completed, including a North Greenland transect trip. In Ma gas (GHG) emissions in a dry heath tundra, West Greenland. We observed high levels of plant available soil nutrients including nitrate, ammonium and phosphate following fire. Also two years after fire, nitrous oxide and carbon dioxide emissions were significantly higher from burned sites. There wer Højdepunkter 2021 Året 2021 har været præget af nye aktiviteter, nye eksternt finansierede projekter og fortsættelse af igangværende feltarbejde. Alt dette på trods af de mange Covid-19 restriktioner men også at CENPERM nu er på sit 10. og sidste år. Næsten alt planlagt feltarbejde er blevet gennemf plantenæringsstoffer i jorden, inklusive nitrat, ammonium og fosfat efter brand. Også to år efter branden var emissionerne af lattergas og kuldioxid betydeligt højere fra afbrændte steder. Der var yderliere positive effekter af beskeden jordopvarmning på frigivelsen af kuldioxid. Vi konkluderede, a Tracking scents of tundra By Riikka Rinnan, Associate Professor, CENPERM, University of Copenhagen We all know the smell of a pine forest or newly cut grass, but how many know what the arctic tundra smells like? Many of the arctic dwarf plants that creep close to the soil surface to protect themsel 2013 Each plant species on the tundra releases its own blend of VOCs. This knowledge can be used to predict emissions from plant communities altered by climatic change and permafrost thaw. Our measurements conducted on individual plants demonstrate that some arctic species, such as the arctic bell-h Microbes on the dark side of the Greenland Ice Sheet by Marek Stibal, CENPERM and a member of the Dark Snow initiative The world is getting warmer. The Arctic doubly so. Glaciers and ice sheets are melting, raising sea levels and giving way to warmer ecosystems. Could we all all life forms join f 2014 Supraglacial microbes can affect albedo in several ways. Some aggregate dark mineral particles and organic matter deposited on the ice sheet surface. They also produce dark-colored humic substances as by-products of organic matter degradation. And probably most importantly some microbes, part Breaking the silence by Andreas Westergaard-Nielsen, Assistant Professor, CENPERM, University of Copenhagen Image data of the Earth surface from above is a strong tool for evaluating the magnitude of certain ecosystem traits. Data collected from air- and spaceborne platforms can help us to evaluate 2015 To overcome some of the limitations in the satellite data, a multidisciplinary CENPERM team started a detailed mapping in August 2015. The area of interest is covering a 5-km transect in proximity to Blæsedalen on Disko Island, representing a variety of elevations and land cover classes from dr Plant root dynamics in a wetland tundra by Ludovica DImperio, postdoc, CENPERM, University of Copenhagen Tundra plants have developed unique characteristics in order to endure extreme environmental conditions including low air temperatures, a short growing season, and limited nutrient availability. (mini-rhizotrones) down to a soil depth of about 60 cm. These tubes were placed in plots where summer air temperatures and winter snow precipitation were experimentally increased. By taking repeated pictures at the same location, we can collect information on root parameters such as length, surface Deltas are growing as climate is warming by Mette Bendixen, postdoc, CENPERM, University of Copenhagen Deltas form where rivers meet the ocean and are shaped by the forces of rivers, waves and tides. Today, most deltas in the world are drowning because of a global rise in sea level. Large parts of 2017 In the work published in Nature in October, we show that the coasts of Greenland have an opposite response to a warming climate than the rest of the Arctic. As climate warms, the deltas of Greenland are growing. Key data for this research come from an archive of historical aerial imagery taken Revealing the tundras secrets from space by Mojtaba Karami, PhD student, CENPERM, University of Copenhagen Dozens of spaceborne platforms are currently imaging the earths surface, and this number is only expected to grow over the coming years. Using the wealth of data these instruments create, we c 2018 mechanisms and processes. It is only natural that we need information on the spatial distribution of these processes to be able to upscale them from the field level to larger extents, for example the entire landscape, region or the Arctic. Tools like fixed cameras, drones, and flux towers help Nitrogen released from thawing permafrost and plant growth by Bo Elberling & Anders Michelsen, professors, CENPER M, University of Copenhagen The carbon (C) balance of the ice-free part of the Arctic relies on a balance of respiration by organic matter releasing CO 2 to the atmosphere and the fixat 2019 permafrost table, which also are the ones most likely to thaw in the near future. That means that thawing permafrost can be an important source of plant-available N. This source of N is only relevant for plant growth if plant roots can reach the depth where N is being released and can compete w Arctic wildfires a burning hot topic by Lena Hermesdorf, PhD Student, CENPER M, University of Copenhagen In recent years, wildfires in arctic tundra landscapes have increased in frequency, and models project them to increase in the future due to warmer and drier summers. To date, little is known a 2020 budgets are dependent on various factors, especially climatic factors such as temperature and precipitation. Therefore, climate-driven changes in temperature and precipitation patterns will lead to warmer and drier summers. This in turn may lead to an increase in wildfire frequency in tundra ec CENPERM publications 2012 Andresen, C.S., Straneo, F., Ribergaard, M.H., Bjørk, A.A., Andersen, T.J., Kuijpers, A., Nørgaard-Pedersen, N., Kjær, K. H., Schjøth, F., Weckstrøm, K., & Ahlstrøm, A. P. (2012). Rapid response of Helheim Glacier in Greenland to climate variability over the past century. N Michelsen, A., Rinnan, R., & Jonasson, S.E. (2012). Two decades of experimental manipulations of heaths and forest understory in the subarctic. Ambio 41,218-230. Schmidt, N.M., Kristensen, D.K., Michelsen, A., & Bay, C. (2012). High arctic plant community responses to a decade of ambient warming. Bi Hopkins, D.W. (2013). Microbial responses to carbon and nitrogen supplementation in an Antarctic dry valley soil. Antarctic Science 25(1), 55-61. Kokfelt, U., & Muscheler, R. (2013). Solar forcing of climate during the last millennium recorded in lake sediments from northern Sweden. Holocene 23(3), Elberling, B., Glud, R.N., & Kühl, M. (2013). An optode sensor array for long term in situ Oxygen measurements in soil and sediment. Journal of Environmental Quality 42(4), 1267-1273. on a Svalbard glacier support a diverse microbial community including ammonia-oxidizing archaea. Environmental Rese Jore, S., Vanwambeke, S.O., Viljugrein, H., Isaksen, K., Kristoffersen, A.B., Woldehiwet, Z., Johansen, B., Brun, E., Brun-Hansen, H., Westermann, S., Larsen, I-L., Ytrehus, B., & Hofshagen, M. (2014). Climate and environmental change drives Ixodes ricinus geographical expansion at the northern rang Strandberg, G., Kjellstrom, E., Poska, A., Wagner, S., Gaillard, M.-J., Trondman, A.-K., Mauri, A., Davis, B. A.S., Kaplan, J.O., Birks, H.J.B., Bjune, A. E., Fyfe, R., Giesecke, T., Kalnina, L., Kangur, M., van der Knaap, W.O., Kokfelt, U., Kunes, P., Latalowa, M., ... Sugita, S. (2014). Regional c Langer, M., Westermann, S., Anthony, K.W., Wischnewski, K., & Boike, J. (2015). Frozen ponds: production and storage of methane during the Arctic winter in a lowland tundra landscape in northern Siberia, Lena River delta. Biogeosciences 12, 977-990. Palmtag, J., Hugelius, G., Lashchinskiy, N., Tams Sondergaard, J., Tamstorf, M., Elberling, B., Larsen, M.M., Mylius, M.R., Lund, M., Abermann, J., & Riget, F. (2015). Mercury exports from a High-Arctic river basin in Northeast Greenland (74N) largely controlled by glacial lake outburst floods. Science of the Total Environment 514, 83-91. compound (2016). Supraglacial bacterial community structures vary across the Greenland ice sheet. FEMS Microbiology Ecology 92(2). Crowther, T.W., Todd-Brown, K.E.O., Rowe, C. W., Wieder, W.R., Carey, J.C., Machmuller, M.B., Snoek, B.L., Fang, S., Zhou, G., Allison, S.D., Blair, J.M., Bridgham, S.D., Burton, Mundra, S., Halvorsen, R., Kauserud, H., Bahram, M., Tedersoo, L., Elberling, B., Cooper, E.J., & Eidesen, P.B. (2016). Ectomycorrhizal and saprotrophic fungi respond differently to long-term experimentally increased snow depth in the High Arctic. MicrobiologyOpen 5(5), 856-869. Ning, W., Tang, J., Tarnocai, C., & Valiranta, M. (2016). Effects of permafrost aggradation on peat properties as determined from a pan-Arctic synthesis of plant macrofossils. Journal of Geophysical Research: Biogeosciences 121(1), 78-94. Wang, W., Rinke, A., Moore, J.C., Ji, D., Cui, X., Peng, S., Lawrence, D.M., McGu Cameron, K.A., Stibal, M., Olsen, N.S., Mikkelsen, A.B., Elberling, B., & Jacobsen, C.S. (2017). Potential Activity of Subglacial Microbiota Transported to Anoxic River Delta Sediments. Microbial Ecology 74(1), 6-9. Chadburn, S.E., Krinner, G., Porada, P., Bartsch, A., Beer, C., Marchesini, L.B., Bo Lund, M., Stiegler, C., Abermann, J., Citterio, M., Hansen, B., & van As, D. (2017). Spatiotemporal variability in surface energy balance across tundra, snow and ice in Greenland. Ambio 46(Suppl. 1), 81-93. López-Blanco, E., Lund, M., Williams, M,P., Tamstorf, M., Westergaard-Nielsen, A., Exbrayat, Rousk, K., Pedersen, P.A., Dyrnum, K., & Michelsen, A. (2017). The interactive effects of temperature and moisture on nitrogen fixation in two temperate-arctic mosses. Theoretical and Experimental Plant Physiology 29(1), 25-36. Weiss, N., Faucherre, S., Lampiris, N., & Wojcik, R. (2017). Elevation- Barthelemy, H., Stark, S., Michelsen, A., & Olofsson, J. (2018). Urine is an important nitrogen source for plants irrespective of vegetation composition in an Arctic tundra: insights from a 15 N-enriched urea tracer experiment. Journal of Ecology 106(1), 367-378. Bjorkman, A.D., Myers-Smith, I.H., E Lopez-Blanco, E., Lund, M., Christensen, T.R., Tamstorf, M.P., Smallman, T.L., Slevin, D., Westergaard-Nielsen, A., Hansen, B.U., Abermann, J., & Williams, M. (2018). Plant traits are key determinants in buffering the meteorological sensitivity of net carbon exchanges of Arctic tundra. Journal of Ge Pilesjö, P., & Poska, A. (2018). Drivers of dissolved organic carbon export in a subarctic catchment: Importance of microbial decomposition, sorption-desorption, peatland and lateral flow. Science of the Total Environment 622-623, 260-274. mann, G., Koenigk, T., Koldunov, N.V., Laprise, R., Mottram ciated with mosses and lichens at a tundra site in Northern Sweden. Environmental Pollution (247), Hollesen, J., Matthiesen, H., Fenger-Nielsen, R., Abermann, J., Westergaard-Nielsen, A., & Elberling, B. (2019). Predicting the loss of organic archaeological deposits at a regional scale in Greenland. Schostag, M., Priemé, A., Jacquiod, S., Russel, J., Ekelund, F., & Jacobsen, C.S. (2019). Bacterial and protozoan dynamics upon thawing and freezing of an active layer permafrost soil. ISME Journal 13, 1345-1359. Simonsen, A.M.T., Pedersen, K.B., Jensen, P.E., Elberling, B., & Bach, L. (2019). Labil Cameron, K.A., Müller, O., Stibal, M., Edwards, A., & Jacobsen, C.S. (2020). Glacial microbiota are hydrologically connected and temporally variable. Environmental Microbiology 22(8), 3172-3187. Hicks, L., Leizeaga, A., Rousk, K., Michelsen, A., & Rousk, J. (2020). Simulated rhizosphere deposits in Liu, X., Wang, Z., Li, X., Rousk, K., & Bao, W. (2020). High nitrogen resorption efficiency of forest mosses. Annals of Botany 125(4), 557-563. López-Blanco, E., Jackowicz-Korczynski, M., Mastepanov, M., Skov, K., Westergaard-Nielsen, A., Williams, M., & Christensen, T.R. (2020). Multi-year data-mod ground microbial community to chronic Mo and P supplements in subarctic dry heaths. Plant and Soil 451(1-2), 261-276. Salazar, A., Rousk, K., Jónsdóttir, I.S., Bellenger, J-P., & Andrésson, Ó.S. (2020). Faster nitrogen cycling and more fungal and root biomass in cold ecosystems under experimental wa Kolstad, E., Michelsen, A., & Ambus, P.L. (2021). Nitrous oxide surface fluxes in a low Arctic heath: Effects of experimental warming along a natural snowmelt gradient. Soil Biology and Biochemistry 160, [108346]. Koranda, M., & Michelsen, A. (2021). Mosses reduce soil nitrogen availability in a sub Swanson, L., Li, T., & Rinnan, R. (2021). Contrasting responses of major and minor volatile compounds to warming and gall-infestation in the Arctic willow Salix myrsinites. Science of the Total Environment 793, [148516]. Virkkala, A-M., Aalto, J., Rogers, B.M. Elberling, B., & Luoto, M. (2021). Stat Hough, M., Mccabe, S., Vining, S.R., Pedersen, E.P., Wilson, R.M., Lawrence, R., Chang, K.Y., Bohrer, G., Riley, W.J., Crill, P.M., Varner, R.K., Blazewicz, S.J., Dorrepaal, E., Tfaily, M.M., Saleska, S.R., Rich, V.I., Frolking, S., Hodgkins, S.B., Mccalley, C.K., Dominguez, S. (2022). Coupling plan Collaboration on permafrost soil vegetation studies. Zackenberg Ecological Research Operations, DCE - Danish Centre for Environment and Energy, Aarhus University. 18th Annual Report 2012. 81-85. Elberling, B., Michelsen, A. & Blok, D. (2013). Hvorfor snehegn på Grønland? Tidsskriftet Grønland 4, 2 Sigsgaard, C., Stecher, O., Elberling, B., & Christoffersen, K.S. (2014). Monitoring DiskoBasis. In: Perlt, T.W., Christoffersen, K.S. (ed.) Arctic Station, Faculty of Science, University of Copenhagen, Annual Report 2013, 6-9. Matthiesen, H., Hollesen, J., Gregory, D., & Elberling, B., Jensen, J.B. 2018 Lund, M., Sigsgaard, C., Abermann, J. Skov, K., Friborg, T., & Hansen, B.U. (2018). Extreme rain event what are consequences for Arctic Ecosystems. In: Christensen, T.R. & Topp-Jørgensen, E.: Greenland Ecosystem Monitoring Annual Report Cards 2017. Danish Centre for Environment and Energy, Aar Educational Activities Throughout all years (2012-2022), CENPERM staff have been involved in ordinary university courses and basically maintained a normal teaching load compared to everyone else at SCIENCE/UCPH. Over the years, CENPERM topics have been covered in the teaching, not the least in a new source Management the list of courses include: Advanced Soil Science and Stable Isotope Geochemistry by P. Ambus, Aerial and Near-Field Remote Sensing by A Westergaard-Nielsen, Coastal, Estuarine and Fluvial Geosciences by T.J. Andersen, Coastal Geosciences by A. Kroon, Ecological Climatology and Cl PhD and Graduate Student Projects During 10 years of CENPERM, more than 26 PhD students and 90 Master students have been involved in f ield work and laborator y experiments and f inally completed and defended their thesis. See a complete list below. The contribution of these students for completing Lindwall, Frida: Emission of biogenic volatile organic compounds in the Arctic: The effect of climate change. Supervisor: Riikka Rinnan. Jammet, Mathilde M.: Fluxes of Methane and Carbon Dioxide from a Subarctic Lake: Seasonality and Significance within the Landscape. Supervisor: Thomas Friborg. Mar 2021 Pedersen, Emily Pickering: Secrets below the surface: Patterns and processes of plant nitrogen uptake in a changing Arctic. Supervisor: Anders Michelsen, co-supervisor: Bo Elberling. Rasmussen, Laura Helene: Nitrate movement in the permafrost landscape affected by snow redistribution. Supervis MSc Theses supervised at CENPERM 2012 Larsen, Nynne: Langtidseffekter af opvarmning, næringsstoftilførsel og skygge på kulstofbalancen og vegetation i to subarktiske heder. Supervisor: Anders Michelsen. Mosbacher, Jesper: Consequences of herbivory for tundra plants: a case study with eriophyoid gal Baggesen, Nanna Schrøder: Photosynthesis and respiration of Empetrum hermaphroditum (crowberry) and gross ecosystem production in response to experimental snow manipulation and altered summer warming in dry heath at Disko, West Greenland. Supervisors: Anders Michelsen and Daan Blok. Christensen, Ann Rasmussen, Kerstin Elise Krøier: Modelling daily ground surface temperatures under changing snowpacks in Zackenberg and Qeqertarsuaq, Greenland. Supervisor: Birger Ulf Hansen. 2016 Busch-Sørensen, Pernille: Impacts of warming, fertilization and shading on the emissions of the volatile organic comp Svendsen, Sophie Sylvest: The effect of temperature on isoprene emissions from a wet ecosystem in Greenland. Supervisors: Riikka Rinnan, Frida Lindwall and Ole John Nielsen. Wulff, Katrine: Plant controlled methane production and emissions from a wetland at Disko, W. Greenland. Supervisor: Bo Elberl Larsen, Henriette Hillerup: Short-term effect of ecosystem nutrients following a tundra fire: An overview of pre- and post-fire C, N and P pools 1 month following a controlled tundra fire in Blæsedalen, Disko Island, West Greenland. Supervisor: Per Ambus. Lund, Magnus Damsbo: Development of an Arcti Larsen, Lærke Wester: Effect of aboveground plant. Supervisor: Riikka Rinnan and Christian Albers. Mariager, Trine: Microbial communities on arctic shrub leaves and their effect on volatile emission. Supervisors: Riikka Rinnan and Anders Priemé. Ranniku, Reti: Methane oxidation in soils from sub-Ant 2021 Christensen, Maj Paornak Sofie: Dynamics of plant nutrient uptake and allocation in a mesic dwarf shrub heath ecosystem on Disko Island, Western Greenland - effects of increased water and phosphorus availability on plant and microbial nutrient uptake. Supervisor: Anders Michelsen, co-superviso National and international cooperation Cooperation in a national and Greenlandic context has been ensured within Danish and Greenlandic networks as Greenland Ecosystem Monitoring (GEM) and through ongoing projects with a range of institutions including the Geological Survey of Denmark and Greenland International key research partners Adam Mickiewicz University, Poznan, Poland Agriculture and Agri-Food, Ottawa, Canada Alfred-Wegener-Institute (AWI), Potsdam, Germany Bonn University, Germany Bristol Glaciology Centre, University of Bristol, UK British Antarctic Survey, Cambridge, UK Canadas Nucl Pacific Northwest National Laboratory, Biological Sciences Division, Richland, WA, USA Queens University, Kingston, Canada Russian Academy of Science, Russia Stanford University, USA State Key Laboratory of Frozen Soil Engineering, Lanzhou, China. Stockholm University, Sweden Swiss Federal Institute US. Geological Survey, Alaska Science Center, Anchorage, Alaska Utrecht University, Department of Physical Geography, the Netherlands Wageningen University, the Netherlands Vrije Universiteit Amsterdam, Faculty of Science, Amsterdam, Netherlands B rønlundhus , Pear y L and. Open top chamber s are m External Funding Researchers within the Center have attracted major research grants in 2012-2022. These external funding opportunities have been pursued through national and international research foundations. These external funding have been very important for CENPERM to further strengthen research Danish Research Council: Uptake of volatile organic compounds by arctic soil. Grant holder: Riikka Rinnan. 2014 2017: DKK 2.6 Mio. Danish Council for Independent Research, Sapere Aude: Bidirectional exchanges of reactive hydro carbons between arctic ecosystems and the atmosphere. Grant holder: Riik Villum Foundation: Natural emissions of volatile organohalogens in Arctic and Subarctic terrestrial systems A study of the Arctics role in the atmospheric organohalogen budget (ARTICVOX). Grant holder: Ole Stig Jacobsen, Christian Albers, Anders Risbjerg Johnsen, Lasse Gudmundsson. 20102014: DKK 3. Marie Sktodowska-Curie Innovative Training Networks (ITN): MicroArctic ITN Network. Grant holder: Carsten Suhr Jacobsen. 2016-2019: DKK 2.3 Mio. NENUN: Nordforsk network on environmental nucleotides. Grant holder: Carsten Suhr Jacobsen. 20IO -2015: DKK 0.8 Mio. The Norwegian Research Council: SnowEc CENPERM staff 2012 - 2021 Research staff Albers Christian N. Research scientist Ambus Per L. Professor Andersen Thorbjørn J. Professor Christiansen Hanne H. Professor Elberling Bo Professor Ernstsen Verner B. Associate professor Friborg Thomas Professor Hansen Birger U. Associate professor CENPERM staff 2012 - 2021 Research assistant Andersen Emil A.S. Bentzon-Tarp Abeline Christensen Anne T. Frendrup Laura L. Jensen Lise Ladegaard-Pedesen Pernille Larsen Elisabeth K. Larsen Laura B. Mylius Maria R. Olsen Nikoline Pedersen Else L. Ranniku Reti Skov Kirstine Stoletov Geor Laboratory and technical staff Davie-Martin Cleo Laboratory technician Gammeltoft Jens Laboratory technician Gudmundsson Lasse Laboratory technician Jacobsen Pia Laboratory technician Juul Inge Laboratory technician Ludvigse n Søs M. Laboratory technician Madsen Mathias Laboratory technician Moser CENPERM Ten Years Report 2012-2021 113 The Danish National Research Foundation (DNRF) is an independent organization established by the Danish Parliament in 1991 with the objective to promote and stimulate basic research at the highest international level at the frontiers of all scientific fields. The Center of Excellence (CoE) program i