Alexander Knohl - Publications

Affiliations: 
University of California, Berkeley, Berkeley, CA, United States 

132 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2024 Kloos S, Klosterhalfen A, Knohl A, Menzel A. Decoding autumn phenology: Unraveling the link between observation methods and detected environmental cues. Global Change Biology. 30: e17231. PMID 38481067 DOI: 10.1111/gcb.17231  0.373
2024 Wei J, von Arx G, Fan Z, Ibrom A, Mund M, Knohl A, Peters RL, Babst F. Drought alters aboveground biomass production efficiency: Insights from two European beech forests. The Science of the Total Environment. 919: 170726. PMID 38331275 DOI: 10.1016/j.scitotenv.2024.170726  0.412
2023 Graf A, Wohlfahrt G, Aranda-Barranco S, Arriga N, Brümmer C, Ceschia E, Ciais P, Desai AR, Di Lonardo S, Gharun M, Grünwald T, Hörtnagl L, Kasak K, Klosterhalfen A, Knohl A, et al. Joint optimization of land carbon uptake and albedo can help achieve moderate instantaneous and long-term cooling effects. Communications Earth & Environment. 4: 298. PMID 38665193 DOI: 10.1038/s43247-023-00958-4  0.346
2023 Tang ACI, Flechard CR, Arriga N, Papale D, Stoy PC, Buchmann N, Cuntz M, Douros J, Fares S, Knohl A, Šigut L, Simioni G, Timmermans R, Grünwald T, Ibrom A, et al. Detection and attribution of an anomaly in terrestrial photosynthesis in Europe during the COVID-19 lockdown. The Science of the Total Environment. 903: 166149. PMID 37567315 DOI: 10.1016/j.scitotenv.2023.166149  0.35
2022 Krashevska V, Stiegler C, June T, Widyastuti R, Knohl A, Scheu S, Potapov A. Land-use change shifts and magnifies seasonal variations of the decomposer system in lowland tropical landscapes. Ecology and Evolution. 12: e9020. PMID 35784088 DOI: 10.1002/ece3.9020  0.37
2021 Lembrechts JJ, van den Hoogen J, Aalto J, Ashcroft MB, De Frenne P, Kemppinen J, Kopecký M, Luoto M, Maclean IMD, Crowther TW, Bailey JJ, Haesen S, Klinges DH, Niittynen P, Scheffers BR, ... ... Knohl A, et al. Global maps of soil temperature. Global Change Biology. PMID 34967074 DOI: 10.1111/gcb.16060  0.324
2021 Fu Z, Ciais P, Makowski D, Bastos A, Stoy PC, Ibrom A, Knohl A, Migliavacca M, Cuntz M, Šigut L, Peichl M, Loustau D, El-Madany TS, Buchmann N, Gharun M, et al. Uncovering the critical soil moisture thresholds of plant water stress for European ecosystems. Global Change Biology. 28: 2111-2123. PMID 34927310 DOI: 10.1111/gcb.16050  0.371
2021 Migliavacca M, Musavi T, Mahecha MD, Nelson JA, Knauer J, Baldocchi DD, Perez-Priego O, Christiansen R, Peters J, Anderson K, Bahn M, Black TA, Blanken PD, Bonal D, Buchmann N, ... ... Knohl A, et al. The three major axes of terrestrial ecosystem function. Nature. PMID 34552242 DOI: 10.1038/s41586-021-03939-9  0.716
2021 Pastorello G, Trotta C, Canfora E, Chu H, Christianson D, Cheah YW, Poindexter C, Chen J, Elbashandy A, Humphrey M, Isaac P, Polidori D, Reichstein M, Ribeca A, van Ingen C, ... ... Knohl A, et al. Author Correction: The FLUXNET2015 dataset and the ONEFlux processing pipeline for eddy covariance data. Scientific Data. 8: 72. PMID 33633116 DOI: 10.1038/s41597-021-00851-9  0.703
2020 Nelson JA, Pérez-Priego O, Zhou S, Poyatos R, Zhang Y, Blanken PD, Gimeno TE, Wohlfahrt G, Desai AR, Gioli B, Limousin JM, Bonal D, Paul-Limoges E, Scott RL, Varlagin A, ... ... Knohl A, et al. Ecosystem transpiration and evaporation: Insights from three water flux partitioning methods across FLUXNET sites. Global Change Biology. PMID 33022860 DOI: 10.1111/gcb.15314  0.503
2020 Graf A, Klosterhalfen A, Arriga N, Bernhofer C, Bogena H, Bornet F, Brüggemann N, Brümmer C, Buchmann N, Chi J, Chipeaux C, Cremonese E, Cuntz M, Dušek J, El-Madany TS, ... ... Knohl A, et al. Altered energy partitioning across terrestrial ecosystems in the European drought year 2018. Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences. 375: 20190524. PMID 32892732 DOI: 10.1098/Rstb.2019.0524  0.442
2020 Fu Z, Ciais P, Bastos A, Stoy PC, Yang H, Green JK, Wang B, Yu K, Huang Y, Knohl A, Šigut L, Gharun M, Cuntz M, Arriga N, Roland M, et al. Sensitivity of gross primary productivity to climatic drivers during the summer drought of 2018 in Europe. Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences. 375: 20190747. PMID 32892724 DOI: 10.1098/Rstb.2019.0747  0.499
2020 Pastorello G, Trotta C, Canfora E, Chu H, Christianson D, Cheah YW, Poindexter C, Chen J, Elbashandy A, Humphrey M, Isaac P, Polidori D, Ribeca A, van Ingen C, Zhang L, ... ... Knohl A, et al. The FLUXNET2015 dataset and the ONEFlux processing pipeline for eddy covariance data. Scientific Data. 7: 225. PMID 32647314 DOI: 10.1038/S41597-020-0534-3  0.736
2020 Grass I, Kubitza C, Krishna VV, Corre MD, Mußhoff O, Pütz P, Drescher J, Rembold K, Ariyanti ES, Barnes AD, Brinkmann N, Brose U, Brümmer B, Buchori D, Daniel R, ... ... Knohl A, et al. Trade-offs between multifunctionality and profit in tropical smallholder landscapes. Nature Communications. 11: 1186. PMID 32132531 DOI: 10.1038/S41467-020-15013-5  0.361
2020 Meijide A, de la Rua C, Guillaume T, Röll A, Hassler E, Stiegler C, Tjoa A, June T, Corre MD, Veldkamp E, Knohl A. Measured greenhouse gas budgets challenge emission savings from palm-oil biodiesel. Nature Communications. 11: 1089. PMID 32107373 DOI: 10.1038/S41467-020-14852-6  0.326
2020 Mund M, Herbst M, Knohl A, Matthäus B, Schumacher J, Schall P, Siebicke L, Tamrakar R, Ammer C. It is not just a 'trade-off' - indications for sink- and source-limitation to vegetative and regenerative growth in an old-growth beech forest. The New Phytologist. PMID 31901219 DOI: 10.1111/Nph.16408  0.414
2020 Solander KC, Newman BD, Carioca de Araujo A, Barnard HR, Berry ZC, Bonal D, Bretfeld M, Burban B, Antonio Candido L, Célleri R, Chambers JQ, Christoffersen BO, Detto M, Dorigo WA, Ewers BE, ... ... Knohl A, et al. The pantropical response of soil moisture to El Niño Hydrology and Earth System Sciences. 24: 2303-2322. DOI: 10.5194/Hess-24-2303-2020  0.783
2020 Markwitz C, Knohl A, Siebicke L. Evapotranspiration over agroforestry sites in Germany Biogeosciences Discussions. 1-44. DOI: 10.5194/Bg-2020-171  0.417
2020 Ellsäßer F, Stiegler C, Röll A, June T, Hendrayanto, Knohl A, Hölscher D. Predicting evapotranspiration from drone-based thermography – a method comparison in a tropical oil palm plantation Biogeosciences Discussions. 1-37. DOI: 10.5194/Bg-2020-159  0.353
2020 Song R, Muller J, Kharbouche S, Yin F, Woodgate W, Kitchen M, Roland M, Arriga N, Meyer W, Koerber G, Bonal D, Burban B, Knohl A, Siebicke L, Buysse P, et al. Validation of Space-Based Albedo Products from Upscaled Tower-Based Measurements Over Heterogeneous and Homogeneous Landscapes Remote Sensing. 12: 833. DOI: 10.3390/Rs12050833  0.363
2020 Tarigan S, Stiegler C, Wiegand K, Knohl A, Murtilaksono K. Relative contribution of evapotranspiration and soil compaction to the fluctuation of catchment discharge: case study from a plantation landscape Hydrological Sciences Journal. 65: 1239-1248. DOI: 10.1080/02626667.2020.1739287  0.357
2020 Khan MNI, Islam MR, Rahman A, Azad MS, Mollick AS, Kamruzzaman M, Sadath MN, Feroz S, Rakkibu MG, Knohl A. Allometric relationships of stand level carbon stocks to basal area, tree height and wood density of nine tree species in Bangladesh Global Ecology and Conservation. 22: e01025. DOI: 10.1016/J.Gecco.2020.E01025  0.438
2019 Besnard S, Carvalhais N, Arain MA, Black A, Brede B, Buchmann N, Chen J, Clevers JGPW, Dutrieux LP, Gans F, Herold M, Jung M, Kosugi Y, Knohl A, Law BE, et al. Memory effects of climate and vegetation affecting net ecosystem CO2 fluxes in global forests. Plos One. 14: e0211510. PMID 30726269 DOI: 10.1371/Journal.Pone.0211510  0.64
2019 Stiegler C, Meijide A, Fan Y, Ashween Ali A, June T, Knohl A. El Niño–Southern Oscillation (ENSO) event reduces CO<sub>2</sub> uptake of an Indonesian oil palm plantation Biogeosciences. 16: 2873-2890. DOI: 10.5194/Bg-16-2873-2019  0.413
2019 Gushchina D, Heimsch F, Osipov A, June T, Rauf A, Kreilein H, Panferov O, Olchev A, Knohl A. Effects Of The 2015–2016 El Niño Event On Energy And CO2 Fluxes Of A Tropical Rainforest In Central Sulawesi, Indonesia Geography, Environment, Sustainability. 12: 183-196. DOI: 10.24057/2071-9388-2018-88  0.436
2019 Tiralla N, Panferov O, Kreilein H, Olchev A, Ali AA, Knohl A. Quantification Of Leaf Emissivities Of Forest Species: Effects On Modelled Energy And Matter Fluxes In Forest Ecosystems Geography, Environment, Sustainability. 12: 245-258. DOI: 10.24057/2071-9388-2018-86  0.428
2019 Fan Y, Meijide A, Lawrence DM, Roupsard O, Carlson KM, Chen H, Röll A, Niu F, Knohl A. Reconciling Canopy Interception Parameterization and Rainfall Forcing Frequency in the Community Land Model for Simulating Evapotranspiration of Rainforests and Oil Palm Plantations in Indonesia Journal of Advances in Modeling Earth Systems. 11: 732-751. DOI: 10.1029/2018Ms001490  0.423
2019 Röll A, Niu F, Meijide A, Ahongshangbam J, Ehbrecht M, Guillaume T, Gunawan D, Hardanto A, Hendrayanto, Hertel D, Kotowska MM, Kreft H, Kuzyakov Y, Leuschner C, Nomura M, ... ... Knohl A, et al. Transpiration on the rebound in lowland Sumatra Agricultural and Forest Meteorology. 274: 160-171. DOI: 10.1016/J.Agrformet.2019.04.017  0.395
2019 Braden-Behrens J, Markwitz C, Knohl A. Eddy covariance measurements of the dual-isotope composition of evapotranspiration Agricultural and Forest Meteorology. 1: 203-219. DOI: 10.1016/J.Agrformet.2019.01.035  0.382
2018 Redelstein R, Coners H, Knohl A, Leuschner C. Water sources of plant uptake along a salt marsh flooding gradient. Oecologia. PMID 30051213 DOI: 10.1007/S00442-018-4229-9  0.329
2018 Guillaume T, Kotowska MM, Hertel D, Knohl A, Krashevska V, Murtilaksono K, Scheu S, Kuzyakov Y. Carbon costs and benefits of Indonesian rainforest conversion to plantations. Nature Communications. 9: 2388. PMID 29921837 DOI: 10.1038/S41467-018-04755-Y  0.438
2018 Ali AA, Fan Y, Corre MD, Kotowska MM, Hassler E, Moyano FE, Stiegler C, Röll A, Meijide A, Ringeler A, Leuschner C, June T, Tarigan S, Kreft H, Hölscher D, ... ... Knohl A, et al. Observation-based implementation of ecophysiological processes for a rubber plant functional type in the community land model (CLM4.5-rubber_v1) Geoscientific Model Development Discussions. 1-41. DOI: 10.5194/Gmd-2018-236  0.499
2018 von Buttlar J, Zscheischler J, Rammig A, Sippel S, Reichstein M, Knohl A, Jung M, Menzer O, Arain MA, Buchmann N, Cescatti A, Gianelle D, Kiely G, Law BE, Magliulo V, et al. Impacts of droughts and extreme-temperature events on gross primary production and ecosystem respiration: a systematic assessment across ecosystems and climate zones Biogeosciences. 15: 1293-1318. DOI: 10.5194/Bg-15-1293-2018  0.427
2018 Cornwell WK, Wright IJ, Turner J, Maire V, Barbour MM, Cernusak LA, Dawson T, Ellsworth D, Farquhar GD, Griffiths H, Keitel C, Knohl A, Reich PB, Williams DG, Bhaskar R, et al. Climate and soils together regulate photosynthetic carbon isotope discrimination within C3plants worldwide Global Ecology and Biogeography. 27: 1056-1067. DOI: 10.1111/Geb.12764  0.477
2018 Besnard S, Carvalhais N, Arain MA, Black A, de Bruin S, Buchmann N, Cescatti A, Chen J, Clevers JGPW, Desai AR, Gough CM, Havrankova K, Herold M, Hörtnagl L, Jung M, ... Knohl A, et al. Quantifying the effect of forest age in annual net forest carbon balance Environmental Research Letters. 13: 124018. DOI: 10.1088/1748-9326/Aaeaeb  0.499
2018 Manoli G, Meijide A, Huth N, Knohl A, Kosugi Y, Burlando P, Ghazoul J, Fatichi S. Ecohydrological changes after tropical forest conversion to oil palm Environmental Research Letters. 13: 064035. DOI: 10.1088/1748-9326/Aac54E  0.461
2018 Tudoroiu M, Genesio L, Gioli B, Schume H, Knohl A, Brümmer C, Miglietta F. Solar dimming above temperate forests and its impact on local climate Environmental Research Letters. 13: 064014. DOI: 10.1088/1748-9326/Aac4E0  0.461
2018 Tamrakar R, Rayment MB, Moyano F, Mund M, Knohl A. Implications of structural diversity for seasonal and annual carbon dioxide fluxes in two temperate deciduous forests Agricultural and Forest Meteorology. 263: 465-476. DOI: 10.1016/J.Agrformet.2018.08.027  0.465
2018 Meijide A, Badu CS, Moyano F, Tiralla N, Gunawan D, Knohl A. Impact of forest conversion to oil palm and rubber plantations on microclimate and the role of the 2015 ENSO event Agricultural and Forest Meteorology. 252: 208-219. DOI: 10.1016/J.Agrformet.2018.01.013  0.448
2018 Park S, Knohl A, Lucas-Moffat AM, Migliavacca M, Gerbig C, Vesala T, Peltola O, Mammarella I, Kolle O, Lavrič JV, Prokushkin A, Heimann M. Strong radiative effect induced by clouds and smoke on forest net ecosystem productivity in central Siberia Agricultural and Forest Meteorology. 376-387. DOI: 10.1016/J.Agrformet.2017.09.009  0.385
2017 Musavi T, Migliavacca M, Reichstein M, Kattge J, Wirth C, Black TA, Janssens I, Knohl A, Loustau D, Roupsard O, Varlagin A, Rambal S, Cescatti A, Gianelle D, Kondo H, et al. Stand age and species richness dampen interannual variation of ecosystem-level photosynthetic capacity. Nature Ecology & Evolution. 1: 48. PMID 31745088 DOI: 10.1038/s41559-016-0048  0.406
2017 Barnes AD, Allen K, Kreft H, Corre MD, Jochum M, Veldkamp E, Clough Y, Daniel R, Darras K, Denmead LH, Farikhah Haneda N, Hertel D, Knohl A, Kotowska MM, Kurniawan S, et al. Direct and cascading impacts of tropical land-use change on multi-trophic biodiversity. Nature Ecology & Evolution. 1: 1511-1519. PMID 29185508 DOI: 10.1038/S41559-017-0275-7  0.375
2017 Fernández-Martínez M, Vicca S, Janssens IA, Ciais P, Obersteiner M, Bartrons M, Sardans J, Verger A, Canadell JG, Chevallier F, Wang X, Bernhofer C, Curtis PS, Gianelle D, Grünwald T, ... ... Knohl A, et al. Atmospheric deposition, CO2, and change in the land carbon sink. Scientific Reports. 7: 9632. PMID 28851977 DOI: 10.1038/S41598-017-08755-8  0.472
2017 Musavi T, Migliavacca M, Reichstein M, Kattge J, Wirth C, Black TA, Janssens I, Knohl A, Loustau D, Roupsard O, Varlagin A, Rambal S, Cescatti A, Gianelle D, Kondo H, et al. Stand age and species richness dampen interannual variation of ecosystem-level photosynthetic capacity. Nature Ecology & Evolution. 1: 48. PMID 28812604 DOI: 10.1038/S41559-016-0048  0.505
2017 Sabajo CR, Maire Gl, June T, Meijide A, Roupsard O, Knohl A. Expansion of oil palm and other cash crops causes an increase of land surface temperature in Indonesia Biogeosciences Discussions. 1-43. DOI: 10.5194/Bg-2017-203  0.403
2017 Sabajo CR, le Maire G, June T, Meijide A, Roupsard O, Knohl A. Expansion of oil palm and other cash crops causes an increase of the land surface temperature in the Jambi province in Indonesia Biogeosciences. 14: 4619-4635. DOI: 10.5194/Bg-14-4619-2017  0.402
2017 Braden-Behrens J, Yan Y, Knohl A. A new instrument for stable isotope measurements of 13C and 18O in CO2 – instrument performance and ecological application of the Delta Ray IRIS analyzer Atmospheric Measurement Techniques. 10: 4537-4560. DOI: 10.5194/Amt-10-4537-2017  0.423
2017 Knohl A, Cuntz M. Tracing carbon fixation Nature Climate Change. 7: 393-394. DOI: 10.1038/Nclimate3295  0.378
2017 Nelson DB, Knohl A, Sachse D, Schefuß E, Kahmen A. Sources and abundances of leaf waxes in aerosols in central Europe Geochimica Et Cosmochimica Acta. 198: 299-314. DOI: 10.1016/J.Gca.2016.11.018  0.425
2017 Meijide A, Röll A, Fan Y, Herbst M, Niu F, Tiedemann F, June T, Rauf A, Hölscher D, Knohl A. Controls of water and energy fluxes in oil palm plantations: Environmental variables and oil palm age Agricultural and Forest Meteorology. 239: 71-85. DOI: 10.1016/J.Agrformet.2017.02.034  0.35
2016 Clough Y, Krishna VV, Corre MD, Darras K, Denmead LH, Meijide A, Moser S, Musshoff O, Steinebach S, Veldkamp E, Allen K, Barnes AD, Breidenbach N, Brose U, Buchori D, ... ... Knohl A, et al. Land-use choices follow profitability at the expense of ecological functions in Indonesian smallholder landscapes. Nature Communications. 7: 13137. PMID 27725673 DOI: 10.1038/Ncomms13137  0.366
2016 Dislich C, Keyel AC, Salecker J, Kisel Y, Meyer KM, Auliya M, Barnes AD, Corre MD, Darras K, Faust H, Hess B, Klasen S, Knohl A, Kreft H, Meijide A, et al. A review of the ecosystem functions in oil palm plantations, using forests as a reference system. Biological Reviews of the Cambridge Philosophical Society. PMID 27511961 DOI: 10.1111/Brv.12295  0.361
2016 Vicca S, Balzarolo M, Filella I, Granier A, Herbst M, Knohl A, Longdoz B, Mund M, Nagy Z, Pintér K, Rambal S, Verbesselt J, Verger A, Zeileis A, Zhang C, et al. Remotely-sensed detection of effects of extreme droughts on gross primary production. Scientific Reports. 6: 28269. PMID 27301671 DOI: 10.1038/Srep28269  0.402
2016 Drescher J, Rembold K, Allen K, Beckschäfer P, Buchori D, Clough Y, Faust H, Fauzi AM, Gunawan D, Hertel D, Irawan B, Jaya IN, Klarner B, Kleinn C, Knohl A, et al. Ecological and socio-economic functions across tropical land use systems after rainforest conversion. Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences. 371. PMID 27114577 DOI: 10.1098/Rstb.2015.0275  0.378
2016 Merten J, Röll A, Guillaume T, Meijide A, Tarigan S, Agusta H, Dislich C, Dittrich C, Faust H, Gunawan D, Hein J, Hendrayanto A, Knohl A, Kuzyakov Y, Wiegand K, et al. Water scarcity and oil palm expansion: Social views and environmental processes Ecology and Society. 21. DOI: 10.5751/Es-08214-210205  0.393
2016 Collalti A, Marconi S, Ibrom A, Trotta C, Anav A, D'Andrea E, Matteucci G, Montagnani L, Gielen B, Mammarella I, Grünwald T, Knohl A, Berninger F, Zhao Y, Valentini R, et al. Validation of 3D-CMCC Forest Ecosystem Model (v.5.1) against eddy covariance data for 10 European forest sites Geoscientific Model Development. 9: 479-504. DOI: 10.5194/Gmd-9-479-2016  0.462
2016 Chen Y, Ryder J, Bastrikov V, McGrath MJ, Naudts K, Otto J, Ottlé C, Peylin P, Polcher J, Valade A, Black A, Elbers JA, Moors E, Foken T, Van Gorsel E, ... ... Knohl A, et al. Evaluating the performance of land surface model ORCHIDEE-CAN v1.0 on water and energy flux estimation with a single-and multi-layer energy budget scheme Geoscientific Model Development. 9: 2951-2972. DOI: 10.5194/Gmd-9-2951-2016  0.414
2016 Chiesi M, Chirici G, Marchetti M, Hasenauer H, Moreno A, Knohl A, Matteucci G, Pilegaard K, Granier A, Longdoz B, Maselli F. Testing the applicability of BIOME-BGC to simulate beech gross primary production in Europe using a new continental weather dataset Annals of Forest Science. 73: 713-727. DOI: 10.1007/S13595-016-0560-7  0.379
2015 Fan Y, Roupsard O, Bernoux M, Le Maire G, Panferov O, Kotowska MM, Knohl A. A sub-canopy structure for simulating oil palm in the Community Land Model: phenology, allocation and yield Geoscientific Model Development Discussions. 8: 4545-4597. DOI: 10.5194/gmdd-8-4545-2015  0.319
2015 Fan Y, Roupsard O, Bernoux M, Le Maire G, Panferov O, Kotowska MM, Knohl A. A sub-canopy structure for simulating oil palm in the Community Land Model (CLM-Palm): phenology, allocation and yield Geoscientific Model Development. 8: 3785-3800. DOI: 10.5194/Gmd-8-3785-2015  0.415
2015 Wingate L, Ogée J, Cremonese E, Filippa G, Mizunuma T, Migliavacca M, Moisy C, Wilkinson M, Moureaux C, Wohlfahrt G, Hammerle A, Hörtnagl L, Gimeno C, Porcar-Castell A, Galvagno M, ... ... Knohl A, et al. Interpreting canopy development and physiology using the EUROPhen camera network at flux sites Biogeosciences Discussions. 12: 7979-8034. DOI: 10.5194/Bgd-12-7979-2015  0.471
2015 Olchev A, Ibrom A, Panferov O, Gushchina D, Kreilein H, Popov V, Propastin P, June T, Rauf A, Gravenhorst G, Knohl A. Response of CO<sub>2</sub> and H<sub>2</sub>O fluxes in a mountainous tropical rainforest in equatorial Indonesia to El Niño events Biogeosciences. 12: 6655-6667. DOI: 10.5194/Bg-12-6655-2015  0.432
2015 Wingate L, Ogeé J, Cremonese E, Filippa G, Mizunuma T, Migliavacca M, Moisy C, Wilkinson M, Moureaux C, Wohlfahrt G, Hammerle A, Hörtnagl L, Gimeno C, Porcar-Castell A, Galvagno M, ... ... Knohl A, et al. Interpreting canopy development and physiology using a European phenology camera network at flux sites Biogeosciences. 12: 5995-6015. DOI: 10.5194/Bg-12-5995-2015  0.456
2015 Röll A, Niu F, Meijide A, Hardanto A, Hendrayanto, Knohl A, Hölscher D. Transpiration in an oil palm landscape: Effects of palm age Biogeosciences. 12: 5619-5633. DOI: 10.5194/Bg-12-5619-2015  0.323
2015 Herbst M, Mund M, Tamrakar R, Knohl A. Differences in carbon uptake and water use between a managed and an unmanaged beech forest in central Germany Forest Ecology and Management. 355: 101-108. DOI: 10.1016/J.Foreco.2015.05.034  0.483
2014 Barthel M, Sturm P, Hammerle A, Buchmann N, Gentsch L, Siegwolf R, Knohl A. Soil H₂¹⁸O labelling reveals the effect of drought on C¹⁸OO fluxes to the atmosphere. Journal of Experimental Botany. 65: 5783-93. PMID 25100825 DOI: 10.1093/Jxb/Eru312  0.402
2014 Gentsch L, Sturm P, Hammerle A, Siegwolf R, Wingate L, Ogée J, Baur T, Plüss P, Barthel M, Buchmann N, Knohl A. Carbon isotope discrimination during branch photosynthesis of Fagus sylvatica: field measurements using laser spectrometry. Journal of Experimental Botany. 65: 1481-96. PMID 24676031 DOI: 10.1093/Jxb/Eru024  0.424
2014 Burri S, Sturm P, Baur T, Barthel M, Knohl A, Buchmann N. The effect of physical back-diffusion of 13CO2 tracer on the coupling between photosynthesis and soil CO2 efflux in grassland. Isotopes in Environmental and Health Studies. 50: 497-513. PMID 24617651 DOI: 10.1080/10256016.2014.893237  0.367
2014 Gentsch L, Hammerle A, Sturm P, Ogée J, Wingate L, Siegwolf R, Plüss P, Baur T, Buchmann N, Knohl A. Carbon isotope discrimination during branch photosynthesis of Fagus sylvatica: a Bayesian modelling approach. Plant, Cell & Environment. 37: 1516-35. PMID 24372560 DOI: 10.1111/Pce.12262  0.367
2014 Burri S, Sturm P, Prechsl UE, Knohl A, Buchmann N. The impact of extreme summer drought on the short-term carbon coupling of photosynthesis to soil CO<sub>2</sub> efflux in a temperate grassland Biogeosciences. 11: 961-975. DOI: 10.5194/Bg-11-961-2014  0.452
2014 Otto J, Berveiller D, Bréon F, Delpierre N, Geppert G, Granier A, Jans W, Knohl A, Kuusk A, Longdoz B, Moors E, Mund M, Pinty B, Schelhaas M, Luyssaert S. Forest summer albedo is sensitive to species and thinning: how should we account for this in Earth system models? Biogeosciences. 11: 2411-2427. DOI: 10.5194/Bg-11-2411-2014  0.425
2014 Luyssaert S, Jammet M, Stoy PC, Estel S, Pongratz J, Ceschia E, Churkina G, Don A, Erb K, Ferlicoq M, Gielen B, Grünwald T, Houghton RA, Klumpp K, Knohl A, et al. Land management and land-cover change have impacts of similar magnitude on surface temperature Nature Climate Change. 4: 389-393. DOI: 10.1038/Nclimate2196  0.354
2014 Yuan W, Cai W, Liu S, Dong W, Chen J, Arain MA, Blanken PD, Cescatti A, Wohlfahrt G, Georgiadis T, Genesio L, Gianelle D, Grelle A, Kiely G, Knohl A, et al. Vegetation-specific model parameters are not required for estimating gross primary production Ecological Modelling. 292: 1-10. DOI: 10.1016/J.Ecolmodel.2014.08.017  0.36
2013 Yuan W, Liu S, Cai W, Dong W, Chen J, Arain A, Blanken PD, Cescatti A, Wohlfahrt G, Georgiadis T, Genesio L, Gianelle D, Grelle A, Kiely G, Knohl A, et al. Are vegetation-specific model parameters required for estimating gross primary production? Geoscientific Model Development Discussions. 6: 5475-5488. DOI: 10.5194/Gmdd-6-5475-2013  0.356
2013 Otto J, Berveiller D, Bréon F, Delpierre N, Geppert G, Granier A, Jans W, Knohl A, Kuusk A, Longdoz B, Moors E, Mund M, Pinty B, Schelhaas M, Luyssaert S. Summertime canopy albedo is sensitive to forest thinning Biogeosciences Discussions. 10: 15373-15414. DOI: 10.5194/Bgd-10-15373-2013  0.416
2013 Shim JH, Powers HH, Meyer CW, Knohl A, Dawson TE, Riley WJ, Pockman WT, McDowell N. Hydrologic control of the oxygen isotope ratio of ecosystem respiration in a semi-arid woodland Biogeosciences. 10: 4937-4956. DOI: 10.5194/Bg-10-4937-2013  0.417
2013 Tölle MH, Moseley C, Panferov O, Busch G, Knohl A. Water supply patterns over Germany under climate change conditions Biogeosciences. 10: 2959-2972. DOI: 10.5194/Bg-10-2959-2013  0.413
2013 Stoy PC, Mauder M, Foken T, Marcolla B, Boegh E, Ibrom A, Arain MA, Arneth A, Aurela M, Bernhofer C, Cescatti A, Dellwik E, Duce P, Gianelle D, van Gorsel E, ... ... Knohl A, et al. A data-driven analysis of energy balance closure across FLUXNET research sites: The role of landscape scale heterogeneity Agricultural and Forest Meteorology. 171: 137-152. DOI: 10.1016/J.Agrformet.2012.11.004  0.415
2013 Tiralla N, Panferov O, Knohl A. Allometric relationships of frequently used shade tree species in cacao agroforestry systems in Sulawesi, Indonesia Agroforestry Systems. 87: 857-870. DOI: 10.1007/S10457-013-9602-4  0.36
2012 Tölle MH, Moseley C, Panferov O, Busch G, Knohl A. Water supply patterns in two agricultural areas of Central Germany under climate change conditions Biogeosciences Discussions. 9: 5153-5176. DOI: 10.5194/Bgd-9-5153-2012  0.419
2012 Bahn M, Buchmann N, Knohl A. Preface "Stable Isotopes and Biogeochemical Cycles in Terrestrial Ecosystems'' Biogeosciences. 9: 3979-3981. DOI: 10.5194/Bg-9-3979-2012  0.361
2012 Hiller RV, Zellweger C, Knohl A, Eugster W. Flux correction for closed-path laser spectrometers without internal water vapor measurements Atmospheric Measurement Techniques Discussions. 5: 351-384. DOI: 10.5194/Amtd-5-351-2012  0.327
2012 Aemisegger F, Sturm P, Graf P, Sodemann H, Pfahl S, Knohl A, Wernli H. Measuring variations of δ<sup>18</sup>O and δ<sup>2</sup>H in atmospheric water vapour using laser spectroscopy: an instrument characterisation study Atmospheric Measurement Techniques Discussions. 5: 1597-1655. DOI: 10.5194/Amtd-5-1597-2012  0.348
2012 Aemisegger F, Sturm P, Graf P, Sodemann H, Pfahl S, Knohl A, Wernli H. Measuring variations of δ 18O and δ 2H in atmospheric water vapour using two commercial laser-based spectrometers: An instrument characterisation study Atmospheric Measurement Techniques. 5: 1491-1511. DOI: 10.5194/Amt-5-1491-2012  0.353
2012 Propastin P, Ibrom A, Knohl A, Erasmi S. Effects of canopy photosynthesis saturation on the estimation of gross primary productivity from MODIS data in a tropical forest Remote Sensing of Environment. 121: 252-260. DOI: 10.1016/J.Rse.2012.02.005  0.416
2012 Sturm P, Eugster W, Knohl A. Eddy covariance measurements of CO2 isotopologues with a quantum cascade laser absorption spectrometer Agricultural and Forest Meteorology. 152: 73-82. DOI: 10.1016/J.Agrformet.2011.09.007  0.454
2011 Barthel M, Hammerle A, Sturm P, Baur T, Gentsch L, Knohl A. The diel imprint of leaf metabolism on the δ13 C signal of soil respiration under control and drought conditions. The New Phytologist. 192: 925-38. PMID 21851360 DOI: 10.1111/J.1469-8137.2011.03848.X  0.406
2011 Barthel M, Sturm P, Knohl A. Soil matrix tracer contamination and canopy recycling did not impair ¹³CO₂ plant-soil pulse labelling experiments. Isotopes in Environmental and Health Studies. 47: 359-71. PMID 21756196 DOI: 10.1080/10256016.2011.587610  0.362
2011 Knohl A, Veldkamp E. Global change: indirect feedbacks to rising CO2. Nature. 475: 177-8. PMID 21753843 DOI: 10.1038/475177A  0.436
2011 Brüggemann N, Gessler A, Kayler Z, Keel SG, Badeck F, Barthel M, Boeckx P, Buchmann N, Brugnoli E, Esperschütz J, Gavrichkova O, Ghashghaie J, Gomez-Casanovas N, Keitel C, Knohl A, et al. Carbon allocation and carbon isotope fluxes in the plant-soil-atmosphere continuum: A review Biogeosciences. 8: 3457-3489. DOI: 10.5194/Bg-8-3457-2011  0.408
2011 Wang T, Ciais P, Piao SL, Ottlé C, Brender P, Maignan F, Arain A, Cescatti A, Gianelle D, Gough C, Gu L, Lafleur P, Laurila T, Marcolla B, Margolis H, ... ... Knohl A, et al. Controls on winter ecosystem respiration in temperate and boreal ecosystems Biogeosciences. 8: 2009-2025. DOI: 10.5194/Bg-8-2009-2011  0.754
2011 Groenendijk M, Dolman AJ, Ammann C, Arneth A, Cescatti A, Dragoni D, Gash JHC, Gianelle D, Gioli B, Kiely G, Knohl A, Law BE, Lund M, Marcolla B, Van Der Molen MK, et al. Seasonal variation of photosynthetic model parameters and leaf area index from global Fluxnet eddy covariance data Journal of Geophysical Research: Biogeosciences. 116. DOI: 10.1029/2011Jg001742  0.385
2011 Ryu Y, Baldocchi DD, Kobayashi H, Van Ingen C, Li J, Black TA, Beringer J, Van Gorsel E, Knohl A, Law BE, Roupsard O. Integration of MODIS land and atmosphere products with a coupled-process model to estimate gross primary productivity and evapotranspiration from 1 km to global scales Global Biogeochemical Cycles. 25. DOI: 10.1029/2011Gb004053  0.744
2011 Zeeman MJ, Tu KP, Knohl A. Continuous operation of spectroscopy instruments for stable isotope analysis Eos, Transactions American Geophysical Union. 92: 211-211. DOI: 10.1029/2011Eo250003  0.343
2011 Djomo AN, Knohl A, Gravenhorst G. Estimations of total ecosystem carbon pools distribution and carbon biomass current annual increment of a moist tropical forest Forest Ecology and Management. 261: 1448-1459. DOI: 10.1016/J.Foreco.2011.01.031  0.43
2011 Kammer A, Tuzson B, Emmenegger L, Knohl A, Mohn J, Hagedorn F. Application of a quantum cascade laser-based spectrometer in a closed chamber system for real-time δ13C and δ18O measurements of soil-respired CO2 Agricultural and Forest Meteorology. 151: 39-48. DOI: 10.1016/J.Agrformet.2010.09.001  0.37
2010 Mund M, Kutsch WL, Wirth C, Kahl T, Knohl A, Skomarkova MV, Schulze ED. The influence of climate and fructification on the inter-annual variability of stem growth and net primary productivity in an old-growth, mixed beech forest. Tree Physiology. 30: 689-704. PMID 20453002 DOI: 10.1093/Treephys/Tpq027  0.399
2010 Barthel M, Sturm P, Gentsch L, Knohl A. Technical Note: A combined soil/canopy chamber system for tracing δ<sup>13</sup>C in soil respiration after a <sup>13</sup>CO<sub>2</sub> canopy pulse labelling Biogeosciences Discussions. 7: 1603-1631. DOI: 10.5194/Bgd-7-1603-2010  0.407
2010 Sturm P, Knohl A. Water vapor δ<sup>2</sup>H and δ<sup>18</sup>O measurements using off-axis integrated cavity output spectroscopy Atmospheric Measurement Techniques. 3: 67-77. DOI: 10.5194/Amt-3-67-2010  0.327
2010 Yi C, Li R, Wolbeck J, Xu X, Nilsson M, Aires L, Albertson JD, Ammann C, Arain MA, De Araujo AC, Aubinet M, Aurela M, Barcza Z, Barr A, Berbigier P, ... ... Knohl A, et al. Climate control of terrestrial carbon exchange across biomes and continents Environmental Research Letters. 5. DOI: 10.1088/1748-9326/5/3/034007  0.774
2009 Vaganov EA, Schulze ED, Skomarkova MV, Knohl A, Brand WA, Roscher C. Intra-annual variability of anatomical structure and delta(13)C values within tree rings of spruce and pine in alpine, temperate and boreal Europe. Oecologia. 161: 729-45. PMID 19653008 DOI: 10.1007/S00442-009-1421-Y  0.417
2009 Zeeman MJ, Tuzson B, Emmenegger L, Knohl A, Buchmann N, Eugster W. Conditional CO<sub>2</sub> flux analysis of a managed grassland with the aid of stable isotopes Biogeosciences Discussions. 6: 3481-3510. DOI: 10.5194/Bgd-6-3481-2009  0.444
2009 Beer C, Ciais P, Reichstein M, Baldocchi D, Law BE, Papale D, Soussana JF, Ammann C, Buchmann N, Frank D, Gianelle D, Janssens IA, Knohl A, Köstner B, Moors E, et al. Temporal and among-site variability of inherent water use efficiency at the ecosystem level Global Biogeochemical Cycles. 23. DOI: 10.1029/2008Gb003233  0.658
2009 Ruehr NK, Knohl A, Buchmann N. Environmental variables controlling soil respiration on diurnal, seasonal and annual time-scales in a mixed mountain forest in Switzerland Biogeochemistry. 98: 153-170. DOI: 10.1007/S10533-009-9383-Z  0.447
2008 Luyssaert S, Schulze ED, Börner A, Knohl A, Hessenmöller D, Law BE, Ciais P, Grace J. Old-growth forests as global carbon sinks. Nature. 455: 213-5. PMID 18784722 DOI: 10.1038/Nature07276  0.464
2008 Kutsch WL, Kolle O, Rebmann C, Knohl A, Ziegler W, Schulze ED. Advection and resulting CO2 exchange uncertainty in a tall forest in central Germany. Ecological Applications : a Publication of the Ecological Society of America. 18: 1391-405. PMID 18767618 DOI: 10.1890/06-1301.1  0.42
2008 Göckede M, Foken T, Aubinet M, Aurela M, Banza J, Bernhofer C, Bonnefond JM, Brunet Y, Carrara A, Clement R, Dellwik E, Elbers J, Eugster W, Fuhrer J, Granier A, ... ... Knohl A, et al. Quality control of CarboEurope flux data - Part 1: Coupling footprint analyses with flux data quality assessment to evaluate sites in forest ecosystems Biogeosciences. 5: 433-450. DOI: 10.5194/Bg-5-433-2008  0.386
2008 McDowell N, Baldocchi D, Barbour M, Bickford C, Cuntz M, Hanson D, Knohl A, Powers H, Rahn T, Randerson J, Riley WJ, Still C, Tu K, Walcroft A. Understanding the stable isotope composition of biosphere-atmosphere CO2 exchange Eos. 89: 94-95. DOI: 10.1029/2008Eo100002  0.586
2008 Knohl A, Baldocchi DD. Effects of diffuse radiation on canopy gas exchange processes in a forest ecosystem Journal of Geophysical Research: Biogeosciences. 113. DOI: 10.1029/2007Jg000663  0.57
2008 Knohl A, Søe ARB, Kutsch WL, Göckede M, Buchmann N. Representative estimates of soil and ecosystem respiration in an old beech forest Plant and Soil. 302: 189-202. DOI: 10.1007/S11104-007-9467-2  0.471
2007 Owen KE, Tenhunen J, Reichstein M, Wang Q, Falge E, Geyer R, Xiao X, Stoy P, Ammann C, Arain A, Aubinet M, Aurela M, Bernhofer C, Chojnicki BH, Granier A, ... ... Knohl A, et al. Linking flux network measurements to continental scale simulations: Ecosystem carbon dioxide exchange capacity under non-water-stressed conditions Global Change Biology. 13: 734-760. DOI: 10.1111/j.1365-2486.2006.01326.x  0.732
2007 Reichstein M, Ciais P, Papale D, Valentini R, Running S, Viovy N, Cramer W, Granier A, Ogée J, Allard V, Aubinet M, Bernhofer C, Buchmann N, Carrara A, Grünwald T, ... ... Knohl A, et al. Reduction of ecosystem productivity and respiration during the European summer 2003 climate anomaly: A joint flux tower, remote sensing and modelling analysis Global Change Biology. 13: 634-651. DOI: 10.1111/J.1365-2486.2006.01224.X  0.497
2007 Reichstein M, Papale D, Valentini R, Aubinet M, Bernhofer C, Knohl A, Laurila T, Lindroth A, Moors E, Pilegaard K, Seufert G. Determinants of terrestrial ecosystem carbon balance inferred from European eddy covariance flux sites Geophysical Research Letters. 34. DOI: 10.1029/2006Gl027880  0.501
2007 Granier A, Reichstein M, Bréda N, Janssens I, Falge E, Ciais P, Grünwald T, Aubinet M, Berbigier P, Bernhofer C, Buchmann N, Facini O, Grassi G, Heinesch B, Ilvesniemi H, ... ... Knohl A, et al. Evidence for soil water control on carbon and water dynamics in European forests during the extremely dry year: 2003 Agricultural and Forest Meteorology. 143: 123-145. DOI: 10.1016/J.Agrformet.2006.12.004  0.732
2006 Göttlicher S, Knohl A, Wanek W, Buchmann N, Richter A. Short-term changes in carbon isotope composition of soluble carbohydrates and starch: from canopy leaves to the root system. Rapid Communications in Mass Spectrometry : Rcm. 20: 653-60. PMID 16444688 DOI: 10.1002/Rcm.2352  0.36
2006 Funk JL, Giardina CP, Knohl A, Lerdau MT. Influence of nutrient availability, stand age, and canopy structure on isoprene flux in a Eucalyptus saligna experimental forest Journal of Geophysical Research: Biogeosciences. 111. DOI: 10.1029/2005Jg000085  0.42
2006 Skomarkova MV, Vaganov EA, Mund M, Knohl A, Linke P, Boerner A, Schulze E. Inter-annual and seasonal variability of radial growth, wood density and carbon isotope ratios in tree rings of beech (Fagus sylvatica) growing in Germany and Italy Trees. 20: 571-586. DOI: 10.1007/S00468-006-0072-4  0.422
2005 Ciais P, Reichstein M, Viovy N, Granier A, Ogée J, Allard V, Aubinet M, Buchmann N, Bernhofer C, Carrara A, Chevallier F, De Noblet N, Friend AD, Friedlingstein P, Grünwald T, ... ... Knohl A, et al. Europe-wide reduction in primary productivity caused by the heat and drought in 2003. Nature. 437: 529-33. PMID 16177786 DOI: 10.1038/Nature03972  0.469
2005 Baldocchi DD, Black TA, Curtis PS, Falge E, Fuentes JD, Granier A, Gu L, Knohl A, Pilegaard K, Schmid HP, Valentini R, Wilson K, Wofsy S, Xu L, Yamamoto S. Predicting the onset of net carbon uptake by deciduous forests with soil temperature and climate data: a synthesis of FLUXNET data. International Journal of Biometeorology. 49: 377-87. PMID 15688192 DOI: 10.1007/S00484-005-0256-4  0.768
2005 Knohl A, Werner RA, Brand WA, Buchmann N. Short-term variations in delta(13)C of ecosystem respiration reveals link between assimilation and respiration in a deciduous forest. Oecologia. 142: 70-82. PMID 15378343 DOI: 10.1007/S00442-004-1702-4  0.432
2005 Hemming D, Yakir D, Ambus P, Aurela M, Besson C, Black K, Buchmann N, Burlett R, Cescatti A, Clement R, Gross P, Granier A, Grünwald T, Havrankova K, Janous D, ... ... Knohl A, et al. Pan-European δ13 C values of air and organic matter from forest ecosystems Global Change Biology. 11: 1065-1093. DOI: 10.1111/J.1365-2486.2005.00971.X  0.469
2005 Reichstein M, Falge E, Baldocchi D, Papale D, Aubinet M, Berbigier P, Bernhofer C, Buchmann N, Gilmanov T, Granier A, Grünwald T, Havránková K, Ilvesniemi H, Janous D, Knohl A, et al. On the separation of net ecosystem exchange into assimilation and ecosystem respiration: Review and improved algorithm Global Change Biology. 11: 1424-1439. DOI: 10.1111/J.1365-2486.2005.001002.X  0.759
2005 Knohl A, Buchmann N. Partitioning the net CO2flux of a deciduous forest into respiration and assimilation using stable carbon isotopes Global Biogeochemical Cycles. 19: n/a-n/a. DOI: 10.1029/2004Gb002301  0.509
2005 Reithmaier LM, Göckede M, Markkanen T, Knohl A, Churkina G, Rebmann C, Buchmann N, Foken T. Use of remotely sensed land use classification for a better evaluation of micrometeorological flux measurement sites Theoretical and Applied Climatology. 84: 219-233. DOI: 10.1007/S00704-005-0168-6  0.374
2005 Rebmann C, Göckede M, Foken T, Aubinet M, Aurela M, Berbigier P, Bernhofer C, Buchmann N, Carrara A, Cescatti A, Ceulemans R, Clement R, Elbers JA, Granier A, Grünwald T, ... ... Knohl A, et al. Quality analysis applied on eddy covariance measurements at complex forest sites using footprint modelling Theoretical and Applied Climatology. 80: 121-141. DOI: 10.1007/S00704-004-0095-Y  0.419
2004 Anthoni PM, Knohl A, Rebmann C, Freibauer A, Mund M, Ziegler W, Kolle O, Schulze ED. Forest and agricultural land-use-dependent CO2 exchange in Thuringia, Germany Global Change Biology. 10: 2005-2019. DOI: 10.1111/J.1365-2486.2004.00863.X  0.48
2003 Knohl A, Schulze E, Kolle O, Buchmann N. Large carbon uptake by an unmanaged 250-year-old deciduous forest in Central Germany Agricultural and Forest Meteorology. 118: 151-167. DOI: 10.1016/S0168-1923(03)00115-1  0.482
2002 Knohl A, Kolle O, Minayeva TY, Milyukova IM, Vygodskaya NN, Foken T, Schulze E. Carbon dioxide exchange of a Russian boreal forest after disturbance by wind throw Global Change Biology. 8: 231-246. DOI: 10.1046/J.1365-2486.2002.00475.X  0.38
2002 SHIBISTOVA O, LLOYD J, ZRAZHEVSKAYA G, ARNETH A, KOLLE O, KNOHL A, ASTRAKHANTCEVA N, SHIJNEVA I, SCHMERLER J. Annual ecosystem respiration budget for a Pinus sylvestris stand in central Siberia Tellus B. 54: 568-589. DOI: 10.1034/J.1600-0889.2002.01488.X  0.449
2002 SHIBISTOVA O, LLOYD J, EVGRAFOVA S, SAVUSHKINA N, ZRAZHEVSKAYA G, ARNETH A, KNOHL A, KOLLE O, SCHULZE E. Seasonal and spatial variability in soil CO2 efflux rates for a central Siberian Pinus sylvestris forest Tellus B. 54: 552-567. DOI: 10.1034/J.1600-0889.2002.01348.X  0.459
2002 NICHOL CJ, LLOYD J, SHIBISTOVA O, ARNETH A, ROSER C, KNOHL A, MATSUBARA S, GRACE J. Remote sensing of photosynthetic-light-use efficiency of a Siberian boreal forest Tellus B. 54: 677-687. DOI: 10.1034/J.1600-0889.2002.01347.X  0.415
1999 Schulze E‐, Lloyd J, Kelliher FM, Wirth C, Rebmann C, Lühker B, Mund M, Knohl A, Milyukova IM, Schulze W, Ziegler W, Varlagin Aβ, Sogachev AF, Valentini R, Dore S, et al. Productivity of forests in the Eurosiberian boreal region and their potential to act as a carbon sink –‐ a synthesis Global Change Biology. 5: 703-722. DOI: 10.1046/J.1365-2486.1999.00266.X  0.464
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