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Conservation Research Institute

 
Prof Friend is a member of the Climate and Environmental Dynamics and Biogeography and Biogeomorphology groups.

Research

Andrew Friend's research interests concern controls on terrestrial vegetation type, structure, and productivity over a wide range of time and space scales and the effects of vegetation on atmospheric processes through land surface energy partitioning and carbon fluxes. He develops numerical models in order to test our understanding of processes through the ability of these models to faithfully simulate real-world phenomena, as well as address concerns regarding the effects of global change on terrestrial ecosystems and potential future atmospheric feedbacks. One of the main tools he uses is the individual-based model of vegetation dynamics, HYBRID, which is used to simulate land surface responses to climate change and atmospheric CO2. His current work is particularly concerned with growth processes (i.e. how meristem activity is controlled and how the determine plant form and function), internal plant feedbacks between sources and sinks, physiological differences between plant types and species, the representation of competition, and the global-scale dynamics of biogeochemistry-climate interactions.

Publications

Key publications: 

Journal articles

2022

  • Chen, Y., Rademacher, T., Fonti, P., Eckes‐Shephard, A.H., LeMoine, J.M., Fonti, M.V., Richardson, A.D. and Friend, A.D., 2022. Inter‐annual and inter‐species tree growth explained by phenology of xylogenesis. New Phytologist, v. 235, p.939-952. doi:10.1111/nph.18195.
  • Eckes-Shephard, A.H., Ljungqvist, F.C., Drew, D.M., Rathgeber, C.B.K. and Friend, A.D., 2022. Wood Formation Modeling – A Research Review and Future Perspectives. Frontiers in Plant Science, v. 13, p.837648-. doi:10.3389/fpls.2022.837648.
  • Friend, A.D., Eckes-Shephard, A.H. and Tupker, Q., 2022. Wood structure explained by complex spatial source-sink interactions. Nature Communicationsdoi:10.1038/s41467-022-35451-7.
  • Friend, A.D., Eckes-Shephard, A.H. and Tupker, Q., 2022. Wood structure explained by complex spatial source-sink interactions. Nature Communications, v. 13, p.7824-. doi:10.1038/s41467-022-35451-7.
  • Rademacher, T., Fonti, P., LeMoine, J.M., Fonti, M.V., Bowles, F., Chen, Y., Eckes‐Shephard, A.H., Friend, A.D. and Richardson, A.D., 2022. Insights into source/sink controls on wood formation and photosynthesis from a stem chilling experiment in mature red maple. New Phytologist, v. 236, p.1296-1309. doi:10.1111/nph.18421.

2021

  • Babst, F., Friend, A.D., Karamihalaki, M., Wei, J., von Arx, G., Papale, D. and Peters, R.L., 2021. Modeling Ambitions Outpace Observations of Forest Carbon Allocation. Trends in Plant Science, v. 26, p.210-219. doi:10.1016/j.tplants.2020.10.002.
  • Eckes‐Shephard, A.H., Tiavlovsky, E., Chen, Y., Fonti, P. and Friend, A.D., 2021. Direct response of tree growth to soil water and its implications for terrestrial carbon cycle modelling. Global Change Biology, v. 27, p.121-135. doi:10.1111/gcb.15397.
  • Rademacher, T., Fonti, P., LeMoine, J.M., Fonti, M.V., Basler, D., Chen, Y., Friend, A.D., Seyednasrollah, B., Eckes‐Shephard, A.H. and Richardson, A.D., 2021. Manipulating phloem transport affects wood formation but not local nonstructural carbon reserves in an evergreen conifer. Plant Cell & Environment, v. 44, p.2506-2521. doi:10.1111/pce.14117.

2020

  • Friend, A., 2020. Mechanistic modelling of the influence of temperature on the wood anatomy of Scots pine. doi:10.5194/egusphere-egu2020-9455.
  • Friend, A.D., 2020. Wood structure explained by complex spatial source-sink interactions. p.2020.05.02.073643-. doi:10.1101/2020.05.02.073643.
  • Rademacher, T., Fonti, P., LeMoine, J.M., Fonti, M.V., Basler, D., Chen, Y., Friend, A.D., Seyednasrollah, B., Eckes-Shephard, A.H. and Richardson, A.D., 2020. Manipulating phloem transport affects wood formation but not nonstructural carbon concentrations in an evergreen conifer. p.2020.09.25.313569-. doi:10.1101/2020.09.25.313569.

2019

  • Friend, A.D., Eckes-Shephard, A., Fonti, P., Rademacher, T.T., Rathgeber, C., Richardson, A.D. and Turton, R.H., 2019. On the need to consider wood formation processes in global vegetation models and a suggested approach. Annals of Forest Sciencedoi:10.1007/s13595-019-0819-x.
  • Kemppinen, K.M.S., Holden, P.B., Edwards, N.R., Ridgwell, A. and Friend, A.D., 2019. Coupled climate–carbon cycle simulation of the Last Glacial Maximum atmospheric CO2 decrease using a large ensemble of modern plausible parameter sets. Climate of the Past, v. 15, p.1039-1062. doi:10.5194/cp-15-1039-2019.
  • Rademacher, T.T., Basler, D., Eckes-Shephard, A.H., Fonti, P., Friend, A.D., Le Moine, J. and Richardson, A.D., 2019. Using Direct Phloem Transport Manipulation to Advance Understanding of Carbon Dynamics in Forest Trees. Frontiers in Forests and Global Change, v. 2, p.11-. doi:10.3389/ffgc.2019.00011.
  • Schewe, J., Gosling, S.N., Reyer, C., Zhao, F., Ciais, P., Elliott, J., Francois, L., Huber, V., Lotze, H.K., Seneviratne, S.I., van Vliet, M.T.H., Vautard, R., Wada, Y., Breuer, L., Büchner, M., Carozza, D.A., Chang, J., Coll, M., Deryng, D., de Wit, A., Eddy, T.D., Folberth, C., Frieler, K., Friend, A.D., Gerten, D., Gudmundsson, L., Hanasaki, N., Ito, A., Khabarov, N., Kim, H., Lawrence, P., Morfopoulos, C., Müller, C., Müller Schmied, H., Orth, R., Ostberg, S., Pokhrel, Y., Pugh, T.A.M., Sakurai, G., Satoh, Y., Schmid, E., Stacke, T., Steenbeek, J., Steinkamp, J., Tang, Q., Tian, H., Tittensor, D.P., Volkholz, J., Wang, X. and Warszawski, L., 2019. State-of-the-art global models underestimate impacts from climate extremes. Nat Commun, v. 10, p.1005-. doi:10.1038/s41467-019-08745-6.

2018

  • Babst, F., Bodesheim, P., Charney, N., Friend, A.D., Girardin, M.P., Klesse, S., Moore, D.J.P., Seftigen, K., Björklund, J., Bouriaud, O., Dawson, A., DeRose, R.J., Dietze, M.C., Eckes, A.H., Enquist, B., Frank, D.C., Mahecha, M.D., Poulter, B., Record, S., Trouet, V., Turton, R.H., Zhang, Z. and Evans, M.E.K., 2018. When tree rings go global: Challenges and opportunities for retro- and prospective insight. Quaternary Science Reviews, v. 197, p.1-20. doi:10.1016/j.quascirev.2018.07.009.
  • Eller, C.B., Rowland, L., Oliveira, R.S., Bittencourt, P.R.L., Barros, F.V., da Costa, A.C.L., Meir, P., Friend, A.D., Mencuccini, M., Sitch, S. and Cox, P., 2018. Modelling tropical forest responses to drought and El Niño with a stomatal optimization model based on xylem hydraulics. Philosophical Transactions of the Royal Society B Biological Sciences, v. 373, p.20170315-. doi:10.1098/rstb.2017.0315.
  • Hacket‐Pain, A.J., Ascoli, D., Vacchiano, G., Biondi, F., Cavin, L., Conedera, M., Drobyshev, I., Liñán, I.D., Friend, A.D., Grabner, M., Hartl, C., Kreyling, J., Lebourgeois, F., Levanič, T., Menzel, A., Maaten, E., Maaten‐Theunissen, M., Muffler, L., Motta, R., Roibu, C., Popa, I., Scharnweber, T., Weigel, R., Wilmking, M. and Zang, C.S., 2018. Climatically controlled reproduction drives interannual growth variability in a temperate tree species. Ecology Letters, v. 21, p.1833-1844. doi:10.1111/ele.13158.

2017

  • Hacket-Pain, A.J. and Friend, A.D., 2017. Increased growth and reduced summer drought limitation at the southern limit of Fagus sylvatica L., despite regionally warmer and drier conditions. Dendrochronologia, v. 44, p.22-30. doi:10.1016/j.dendro.2017.02.005.
  • Hayat, A., Hacket-Pain, A.J., Pretzsch, H., Rademacher, T.T. and Friend, A.D., 2017. Modeling Tree Growth Taking into Account Carbon Source and Sink Limitations. Frontiers in Plant Science, v. 8, p.182-. doi:10.3389/fpls.2017.00182.
  • Thurner, M., Beer, C., Ciais, P., Friend, A.D., Ito, A., Kleidon, A., Lomas, M.R., Quegan, S., Rademacher, T.T., Schaphoff, S., Tum, M., Wiltshire, A. and Carvalhais, N., 2017. Evaluation of climate-related carbon turnover processes in global vegetation models for boreal and temperate forests. Global Change Biologydoi:10.1111/gcb.13660.

2016

  • Hacket-Pain, A.J., Cavin, L., Friend, A.D. and Jump, A.S., 2016. Consistent limitation of growth by high temperature and low precipitation from range core to southern edge of European beech indicates widespread vulnerability to changing climate. European Journal of Forest Research, p.1-13. doi:10.1007/s10342-016-0982-7.
  • Hacket-Pain, A.J., Friend, A.D., Lageard, J.G.A. and Thomas, P.A., 2016. Tree rings and masting: considering reproductive phenomena when interpreting tree rings?. TRACE - Tree Rings in Archaeology, Climatology and Ecology, v. 14, p.78-85. doi:10.2312/GFZ.b103-16042.

2015

  • Ekici, A., Chadburn, S., Chaudhary, N., Hajdu, L.H., Marmy, A., Peng, S., Boike, J., Burke, E., Friend, A.D., Hauck, C., Krinner, G., Langer, M., Miller, P.A. and Beer, C., 2015. Site-level model intercomparison of high latitude and high altitude soil thermal dynamics in tundra and barren landscapes. The Cryosphere, v. 9, p.1343-1361. doi:10.5194/tc-9-1343-2015.
  • Frieler, K., Levermann, A., Elliott, J., Heinke, J., Arneth, A., Bierkens, M.F.P., Ciais, P., Clark, D.B., Deryng, D., Döll, P., Falloon, P., Fekete, B., Folberth, C., Friend, A.D., Gellhorn, C., Gosling, S.N., Haddeland, I., Khabarov, N., Lomas, M., Masaki, Y., Nishina, K., Neumann, K., Oki, T., Pavlick, R., Ruane, A.C., Schmid, E., Schmitz, C., Stacke, T., Stehfest, E., Tang, Q., Wisser, D., Huber, V., Piontek, F., Warszawski, L., Schewe, J., Lotze-Campen, H. and Schellnhuber, H.J., 2015. A framework for the cross-sectoral integration of multi-model impact projections: land use decisions under climate impacts uncertainties. Earth System Dynamics, v. 6, p.447-460. doi:10.5194/esd-6-447-2015.
  • Hacket-Pain, A.J., Friend, A.D., Lageard, J.G.A. and Thomas, P.A., 2015. The influence of masting phenomenon on growth–climate relationships in trees: explaining the influence of previous summers' climate on ring width. Tree Physiology, v. 35, p.319-330. doi:10.1093/treephys/tpv007.
  • Nishina, K., Ito, A., Falloon, P., Friend, A.D., Beerling, D.J., Ciais, P., Clark, D.B., Kahana, R., Kato, E., Lucht, W., Lomas, M., Pavlick, R., Schaphoff, S., Warszawaski, L. and Yokohata, T., 2015. Decomposing uncertainties in the future terrestrial carbon budget associated with emission scenarios, climate projections, and ecosystem simulations using the ISI-MIP results. Earth System Dynamics, v. 6, p.435-445. doi:10.5194/esd-6-435-2015.
  • Pasquato, M., Medici, C., Friend, A.D. and Francés, F., 2015. Comparing two approaches for parsimonious vegetation modelling in semiarid regions using satellite data. Ecohydrology, v. 8, p.1024-1036. doi:10.1002/eco.1559.
  • Quiquet, A., Archibald, A.T., Friend, A.D., Chappellaz, J., Levine, J.G., Stone, E.J., Telford, P.J. and Pyle, J.A., 2015. The relative importance of methane sources and sinks over the Last Interglacial period and into the last glaciation. Quaternary Science Reviews, v. 112, p.1-16. doi:10.1016/j.quascirev.2015.01.004.
  • Raghavan, M., Steinrücken, M., Harris, K., Schiffels, S., Rasmussen, S., DeGiorgio, M., Albrechtsen, A., Valdiosera, C., Ávila-Arcos, M.C., Malaspinas, A.-.S., Eriksson, A., Moltke, I., Metspalu, M., Homburger, J.R., Wall, J., Cornejo, O.E., Moreno-Mayar, J.V., Korneliussen, T.S., Pierre, T., Rasmussen, M., Campos, P.F., de Barros Damgaard, P., Allentoft, M.E., Lindo, J., Metspalu, E., Rodríguez-Varela, R., Mansilla, J., Henrickson, C., Seguin-Orlando, A., Malmström, H., Stafford, T., Shringarpure, S.S., Moreno-Estrada, A., Karmin, M., Tambets, K., Bergström, A., Xue, Y., Warmuth, V., Friend, A.D., Singarayer, J., Valdes, P., Balloux, F., Leboreiro, I., Vera, J.L., Rangel-Villalobos, H., Pettener, D., Luiselli, D., Davis, L.G., Heyer, E., Zollikofer, C.P.E., Ponce de León, M.S., Smith, C.I., Grimes, V., Pike, K.-.A., Deal, M., Fuller, B.T., Arriaza, B., Standen, V., Luz, M.F., Ricaut, F., Guidon, N., Osipova, L., Voevoda, M.I., Posukh, O.L., Balanovsky, O., Lavryashina, M., Bogunov, Y., Khusnutdinova, E., Gubina, M., Balanovska, E., Fedorova, S., Litvinov, S., Malyarchuk, B., Derenko, M., Mosher, M.J., Archer, D., Cybulski, J., Petzelt, B., Mitchell, J., Worl, R., Norman, P.J., Parham, P., Kemp, B.M., Kivisild, T., Tyler-Smith, C., Sandhu, M.S., Crawford, M., Villems, R., Smith, D.G., Waters, M.R., Goebel, T., Johnson, J.R., Malhi, R.S., Jakobsson, M., Meltzer, D.J., Manica, A., Durbin, R., Bustamante, C.D., Song, Y.S., Nielsen, R. and Willerslev, E., 2015. Genomic evidence for the Pleistocene and recent population history of Native Americans. Science, v. 349, p.aab3884-. doi:10.1126/science.aab3884.

2014

  • Dalmonech, D., Foley, A.M., Anav, A., Friedlingstein, P., Friend, A.D., Kidston, M., Willeit, M. and Zaehle, S., 2014. Challenges and opportunities to reduce uncertainty in projections of future atmospheric CO<sub>2</sub>: a combined marine and terrestrial biosphere perspective. v. 11, p.2083-2153. doi:10.5194/bgd-11-2083-2014.
  • Foley, A.M., Willeit, M., Brovkin, V., Feulner, G. and Friend, A.D., 2014. Quantifying the global carbon cycle response to volcanic stratospheric aerosol radiative forcing using Earth System Models. Journal of Geophysical Research: Atmospheres, v. 119, p.101-111. doi:10.1002/2013jd019724.
  • Friend, A.D., Lucht, W., Rademacher, T.T., Keribin, R., Betts, R., Cadule, P., Ciais, P., Clark, D.B., Dankers, R., Falloon, P.D., Ito, A., Kahana, R., Kleidon, A., Lomas, M.R., Nishina, K., Ostberg, S., Pavlick, R., Peylin, P., Schaphoff, S., Vuichard, N., Warszawski, L., Wiltshire, A. and Woodward, F.I., 2014. Carbon residence time dominates uncertainty in terrestrial vegetation responses to future climate and atmospheric CO2. Proc Natl Acad Sci U S A, v. 111, p.3280-3285. doi:10.1073/pnas.1222477110.
  • Huber, V., Schellnhuber, H.J., Arnell, N.W., Frieler, K., Friend, A.D., Gerten, D., Haddeland, I., Kabat, P., Lotze-Campen, H., Lucht, W., Parry, M., Piontek, F., Rosenzweig, C., Schewe, J. and Warszawski, L., 2014. Climate impact research: beyond patchwork. Earth System Dynamics, v. 5, p.399-408. doi:10.5194/esd-5-399-2014.
  • Nishina, K., Ito, A., Beerling, D.J., Cadule, P., Ciais, P., Clark, D.B., Falloon, P., Friend, A.D., Kahana, R., Kato, E., Keribin, R., Lucht, W., Lomas, M., Rademacher, T.T., Pavlick, R., Schaphoff, S., Vuichard, N., Warszawaski, L. and Yokohata, T., 2014. Quantifying uncertainties in soil carbon responses to changes in global mean temperature and precipitation. Earth System Dynamics, v. 5, p.197-209. doi:10.5194/esd-5-197-2014.
  • Nishina, K., Ito, A., Falloon, P., Friend, A.D., Beerling, D.J., Ciais, P., Clark, D.B., Kahana, R., Kato, E., Lucht, W., Lomas, M., Pavlick, R., Schaphoff, S., Warszawaski, L. and Yokohata, T., 2014. Decomposing uncertainties in the future terrestrial carbon budget associated with emission scenario, climate projection, and ecosystem simulation using the ISI-MIP result. v. 5, p.1197-1219. doi:10.5194/esdd-5-1197-2014.
  • O'Shea, S.J., Allen, G., Gallagher, M.W., Bower, K., Illingworth, S.M., Muller, J.B.A., Jones, B., Percival, C.J., Bauguitte, S.J.-.B., Cain, M., Warwick, N., Quiquet, A., Skiba, U., Drewer, J., Dinsmore, K., Nisbet, E.G., Lowry, D., Fisher, R.E., France, J.L., Aurela, M., Lohila, A., Hayman, G., George, C., Clark, D., Manning, A.J., Friend, A.D. and Pyle, J., 2014. Methane and carbon dioxide fluxes and their regional scalability for the European Arctic wetlands during the MAMM project in summer 2012. v. 14, p.8455-8494. doi:10.5194/acpd-14-8455-2014.
  • O'Shea, S.J., Allen, G., Gallagher, M.W., Bower, K., Illingworth, S.M., Muller, J.B.A., Jones, B.T., Percival, C.J., Bauguitte, S.J.-.B., Cain, M., Warwick, N., Quiquet, A., Skiba, U., Drewer, J., Dinsmore, K., Nisbet, E.G., Lowry, D., Fisher, R.E., France, J.L., Aurela, M., Lohila, A., Hayman, G., George, C., Clark, D.B., Manning, A.J., Friend, A.D. and Pyle, J., 2014. Methane and carbon dioxide fluxes and their regional scalability for the European Arctic wetlands during the MAMM project in summer 2012. Atmospheric Chemistry and Physics, v. 14, p.13159-13174. doi:10.5194/acp-14-13159-2014.
  • Piontek, F., Müller, C., Pugh, T.A.M., Clark, D.B., Deryng, D., Elliott, J., Colón González, F.D.J., Flörke, M., Folberth, C., Franssen, W., Frieler, K., Friend, A.D., Gosling, S.N., Hemming, D., Khabarov, N., Kim, H., Lomas, M.R., Masaki, Y., Mengel, M., Morse, A., Neumann, K., Nishina, K., Ostberg, S., Pavlick, R., Ruane, A.C., Schewe, J., Schmid, E., Stacke, T., Tang, Q., Tessler, Z.D., Tompkins, A.M., Warszawski, L., Wisser, D. and Schellnhuber, H.J., 2014. Multisectoral climate impact hotspots in a warming world. Proc Natl Acad Sci U S A, v. 111, p.3233-3238. doi:10.1073/pnas.1222471110.

2013

  • Foley, A.M., Dalmonech, D., Friend, A.D., Aires, F., Archibald, A., Bartlein, P., Bopp, L., Chappellaz, J., Cox, P., Edwards, N.R., Feulner, G., Friedlingstein, P., Harrison, S.P., Hopcroft, P.O., Jones, C.D., Kolassa, J., Levine, J.G., Prentice, I.C., Pyle, J., Riveiros, N.V., Wolff, E.W. and Zaehle, S., 2013. Evaluation of biospheric components in Earth system models using modern and palaeo observations: the state-of-the-art. v. 10, p.10937-10995. doi:10.5194/bgd-10-10937-2013.
  • Foley, A.M., Dalmonech, D., Friend, A.D., Aires, F., Archibald, A.T., Bartlein, P., Bopp, L., Chappellaz, J., Cox, P., Edwards, N.R., Feulner, G., Friedlingstein, P., Harrison, S.P., Hopcroft, P.O., Jones, C.D., Kolassa, J., Levine, J.G., Prentice, I.C., Pyle, J., Vázquez Riveiros, N., Wolff, E.W. and Zaehle, S., 2013. Evaluation of biospheric components in earth system models using modern and palaeo-observations: The state-of-the-art. Biogeosciences, v. 10, p.8305-8328. doi:10.5194/bg-10-8305-2013.
  • Nishina, K., Ito, A., Beerling, D.J., Cadule, P., Ciais, P., Clark, D.B., Falloon, P., Friend, A.D., Kahana, R., Kato, E., Keribin, R., Lucht, W., Lomas, M., Rademacher, T.T., Pavlick, R., Schaphoff, S., Vuichard, N., Warszawaski, L. and Yokohata, T., 2013. Global soil organic carbon stock projection uncertainties relevant to sensitivity of global mean temperature and precipitation changes. v. 4, p.1035-1064. doi:10.5194/esdd-4-1035-2013.
  • Warszawski, L., Friend, A., Ostberg, S., Frieler, K., Lucht, W., Schaphoff, S., Beerling, D., Cadule, P., Ciais, P., Clark, D.B., Kahana, R., Ito, A., Keribin, R., Kleidon, A., Lomas, M., Nishina, K., Pavlick, R., Rademacher, T.T., Buechner, M., Piontek, F., Schewe, J., Serdeczny, O. and Schellnhuber, H.J., 2013. A multi-model analysis of risk of ecosystem shifts under climate change. Environmental Research Letters, v. 8, p.044018-. doi:10.1088/1748-9326/8/4/044018.

2012

  • Eriksson, A., Betti, L., Friend, A.D., Lycett, S.J., Singarayer, J.S., von Cramon-Taubadel, N., Valdes, P.J., Balloux, F. and Manica, A., 2012. Late Pleistocene climate change and the global expansion of anatomically modern humans. Proc Natl Acad Sci U S A, v. 109, p.16089-16094. doi:10.1073/pnas.1209494109.
  • Gerken, T., Babel, W., Hoffmann, A., Biermann, T., Herzog, M., Friend, A.D., Li, M., Ma, Y., Foken, T. and Graf, H.F., 2012. Turbulent flux modelling with a simple 2-layer soil model and extrapolated surface temperature applied at Nam Co Lake basin on the Tibetan Plateau. Hydrology and Earth System Sciences, v. 16, p.1095-1110. doi:10.5194/hess-16-1095-2012.
  • Marthews, T.R., Malhi, Y., Girardin, C.A.J., Silva Espejo, J.E., Aragão, L.E.O.C., Metcalfe, D.B., Rapp, J.M., Mercado, L.M., Fisher, R.A., Galbraith, D.R., Fisher, J.B., Salinas-Revilla, N., Friend, A.D., Restrepo-Coupe, N. and Williams, R.J., 2012. Simulating forest productivity along a neotropical elevational transect: Temperature variation and carbon use efficiency. Global Change Biology, v. 18, p.2882-2898. doi:10.1111/j.1365-2486.2012.02728.x.

2011

  • Durant, A.J., Le Quéré, C., Hope, C. and Friend, A.D., 2011. Economic value of improved quantification in global sources and sinks of carbon dioxide. Philos Trans A Math Phys Eng Sci, v. 369, p.1967-1979. doi:10.1098/rsta.2011.0002.
  • Friend, A.D., 2011. Response of Earth's surface temperature to radiative forcing over AD 1-2009. J GEOPHYS RES-ATMOS, v. 116, art. D13112, doi:10.1029/2010JD015143.
  • Zaehle, S., Ciais, P., Friend, A.D. and Prieur, V., 2011. Carbon benefits of anthropogenic reactive nitrogen offset by nitrous oxide emissions. NAT GEOSCI, v. 4, p.601-605. doi:10.1038/ngeo1207.

2010

  • Friend, A.D., 2010. Terrestrial plant production and climate change. J Exp Bot, v. 61, p.1293-1309. doi:10.1093/jxb/erq019.
  • Zaehle, S., Friedlingstein, P. and Friend, A.D., 2010. Terrestrial nitrogen feedbacks may accelerate future climate change. GEOPHYS RES LETT, v. 37, art. L01401, doi:10.1029/2009GL041345.
  • Zaehle, S. and Friend, A.D., 2010. Carbon and nitrogen cycle dynamics in the O-CN land surface model: 1. Model description, site-scale evaluation, and sensitivity to parameter estimates. GLOBAL BIOGEOCHEM CY, v. 24, art. GB1005, doi:10.1029/2009GB003521.
  • Zaehle, S., Friend, A.D., Friedlingstein, P., Dentener, F., Peylin, P. and Schulz, M., 2010. Carbon and nitrogen cycle dynamics in the O-CN land surface model: 2. Role of the nitrogen cycle in the historical terrestrial carbon balance. GLOBAL BIOGEOCHEM CY, v. 24, art. GB1006, doi:10.1029/2009GB003522.
  • Zaehle, S., Friend, A.D., Friedlingstein, P., Dentener, F., Peylin, P. and Schulz, M., 2010. Carbon and nitrogen cycle dynamics in the O-CN land surface model: 2. Role of the nitrogen cycle in the historical terrestrial carbon balance. Global Biogeochemical Cycles, v. 24, doi:10.1029/2009GB003522,2010.

2009

  • Keenan, T., Garcia, R., Friend, A.D., Zaehle, S., Gracia, C. and Sabate, S., 2009. Improved understanding of drought controls on seasonal variation in Mediterranean forest canopy CO2 and water fluxes through combined in situ measurements and ecosystem modelling. BIOGEOSCIENCES, v. 6, p.1423-1444.

2007

  • Demarty, J., Chevallier, F., Friend, A.D., Viovy, N., Piao, S. and Ciais, P., 2007. Assimilation of global MODIS leaf area index retrievals within a terrestrial biosphere model. GEOPHYS RES LETT, v. 34, art. L15402, doi:10.1029/2007GL030014.
  • Friend, A.D., Arneth, A., Kiang, N.Y., Lomas, M., Ogee, J., Rodenbeckk, C., Running, S.W., Santaren, J.D., Sitch, S., Viovy, N., Woodward, F.I. and Zaehle, S., 2007. FLUXNET and modelling the global carbon cycle. GLOBAL CHANGE BIOL, v. 13, p.610-633. doi:10.1111/j.1365-2486.2006.01223.x.
  • Hansen, J., Sato, M., Ruedy, R., Kharecha, P., Lacis, A., Miller, R., Nazarenko, L., Lo, K., Schmidt, G.A., Russell, G., Aleinov, I., Bauer, S., Baum, E., Cairns, B., Canuto, V., Chandler, M., Cheng, Y., Cohen, A., Del Genio, A., Faluvegi, G., Fleming, E., Friend, A., Hall, T., Jackman, C., Jonas, J., Kelley, M., Kiang, N.Y., Koch, D., Labow, G., Lerner, J., Menon, S., Novakov, T., Oinas, V., Perlwitz, J., Rind, D., Romanou, A., Schmunk, R., Shindell, D., Stone, P., Sun, S., Streets, D., Tausnev, N., Thresher, D., Unger, N., Yao, M. and Zhang, S., 2007. Dangerous human-made interference with climate: a GISS modelE study. ATMOS CHEM PHYS, v. 7, p.2287-2312.
  • Hansen, J., Sato, M., Ruedy, R., Kharecha, P., Lacis, A., Miller, R., Nazarenko, L., Lo, K., Schmidt, G.A., Russell, G., Aleinov, I., Bauer, S., Baum, E., Cairns, B., Canuto, V., Chandler, M., Cheng, Y., Cohen, A., Del Genio, A., Faluvegi, G., Fleming, E., Friend, A., Hall, T., Jackman, C., Jonas, J., Kelley, M., Kiang, N.Y., Koch, D., Labow, G., Lerner, J., Menon, S., Novakov, T., Oinas, V., Perlwitz, J., Rind, D., Romanou, A., Schmunk, R., Shindell, D., Stone, P., Sun, S., Streets, D., Tausnev, N., Thresher, D., Unger, N., Yao, M. and Zhang, S., 2007. Climate simulations for 1880-2003 with GISS modelE. CLIM DYNAM, v. 29, p.661-696. doi:10.1007/s00382-007-0255-8.

2006

  • Lathiere, J., Hauglustaine, D.A., Friend, A.D., De Noblet-Ducoudre, N., Viovy, N. and Folberth, G.A., 2006. Impact of climate variability and land use changes on global biogenic volatile organic compound emissions. ATMOS CHEM PHYS, v. 6, p.2129-2146.
  • Schmidt, G.A., Ruedy, R., Hansen, J.E., Aleinov, I., Bell, N., Bauer, M., Bauer, S., Cairns, B., Canuto, V., Cheng, Y., Del Genio, A., Faluvegi, G., Friend, A.D., Hall, T.M., Hu, Y.Y., Kelley, M., Kiang, N.Y., Koch, D., Lacis, A.A., Lerner, J., Lo, K.K., Miller, R.L., Nazarenko, L., Oinas, V., Perlwitz, J., Rind, D., Romanou, A., Russell, G.L., Sato, M., Shindell, D.T., Stone, P.H., Sun, S., Tausnev, N., Thresher, D. and Yao, M.S., 2006. Present-day atmospheric simulations using GISS ModelE: Comparison to in situ, satellite, and reanalysis data. J CLIMATE, v. 19, p.153-192.

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, A.D., Friedlingstein, P., Grünwald, T., Heinesch, B., Keronen, P., Knohl, A., Krinner, G., Loustau, D., Manca, G., Matteucci, G., Miglietta, F., Ourcival, J.M., Papale, D., Pilegaard, K., Rambal, S., Seufert, G., Soussana, J.F., Sanz, M.J., Schulze, E.D., Vesala, T. and Valentini, R., 2005. Europe-wide reduction in primary productivity caused by the heat and drought in 2003. Nature, v. 437, p.529-533. doi:10.1038/nature03972.
  • Friend, A.D. and Kiang, N.Y., 2005. Land surface model development for the GISS GCM: Effects of improved canopy physiology on simulated climate. J CLIMATE, v. 18, p.2883-2902.
  • Hansen, J., Sato, M., Ruedy, R., Nazarenko, L., Lacis, A., Schmidt, G.A., Russell, G., Aleinov, I., Bauer, M., Bauer, S., Bell, N., Cairns, B., Canuto, V., Chandler, M., Cheng, Y., Del Genio, A., Faluvegi, G., Fleming, E., Friend, A., Hall, T., Jackman, C., Kelley, M., Kiang, N., Koch, D., Lean, J., Lerner, J., Lo, K., Menon, S., Miller, R., Minnis, P., Novakov, T., Oinas, V., Perlwitz, J., Rind, D., Romanou, A., Shindell, D., Stone, P., Sun, S., Tausnev, N., Thresher, D., Wielicki, B., Wong, T., Yao, M. and Zhang, S., 2005. Efficacy of climate forcings. J GEOPHYS RES-ATMOS, v. 110, art. D18104, doi:10.1029/2005JD005776.

2004

  • Levy, P.E., Cannell, M.G.R. and Friend, A.D., 2004. Modelling the impact of future changes in climate, CO2 concentration and land use on natural ecosystems and the terrestrial carbon sink. GLOBAL ENVIRON CHANG, v. 14, p.21-30. doi:10.1016/j.gloenvcha.2003.10.005.

2001

  • Cramer, W., Bondeau, A., Woodward, F.I., Prentice, I.C., Betts, R.A., Brovkin, V., Cox, P.M., Fisher, V., Foley, J.A., Friend, A.D., Kucharik, C., Lomas, M.R., Ramankutty, N., Sitch, S., Smith, B., White, A. and Young-Molling, C., 2001. Global response of terrestrial ecosystem structure and function to CO2 and climate change: results from six dynamic global vegetation models. GLOBAL CHANGE BIOL, v. 7, p.357-373.
  • Friend, A.D., 2001. Modelling canopy CO2 fluxes: are 'big-leaf' simplifications justified?. GLOBAL ECOL BIOGEOGR, v. 10, p.603-619.
  • Wullschleger, S.D., Jackson, R.B., Currie, W.S., Friend, A.D., Luo, Y., Mouillot, F., Pan, Y. and Shao, G.F., 2001. Below-ground processes in gap models for simulating forest response to global change. CLIMATIC CHANGE, v. 51, p.449-473.

2000

  • Friend, A.D. and White, A., 2000. Evaluation and analysis of a dynamic terrestrial ecosystem model under preindustrial conditions at the global scale. GLOBAL BIOGEOCHEM CY, v. 14, p.1173-1190.
  • Murray, M.B., Smith, R.I., Friend, A. and Jarvis, P.G., 2000. Effect of elevated [CO(2)] and varying nutrient application rates on physiology and biomass accumulation of Sitka spruce (Picea sitchensis). Tree Physiol, v. 20, p.421-434. doi:10.1093/treephys/20.7.421.
  • White, A., Cannell, M.G.R. and Friend, A.D., 2000. The high-latitude terrestrial carbon sink: a model analysis. GLOBAL CHANGE BIOL, v. 6, p.227-245.
  • White, A., Cannell, M.G.R. and Friend, A.D., 2000. CO2 stabilization, climate change and the terrestrial carbon sink. GLOBAL CHANGE BIOL, v. 6, p.817-833.

1999

  • White, A., Cannell, M.G.R. and Friend, A.D., 1999. Climate change impacts on ecosystems and the terrestrial carbon sink: a new assessment. GLOBAL ENVIRON CHANG, v. 9, p.S21-S30.

1998

  • Cannell, M.G.R., Thornley, J.H.M., Mobbs, D.C. and Friend, A.D., 1998. UK conifer forests may be growing faster in response to increased N deposition, atmospheric CO2 and temperature. FORESTRY, v. 71, p.277-296.
  • Friend, A.D., 1998. Parameterisation of a global daily weather generator for terrestrial ecosystem modelling. ECOL MODEL, v. 109, p.121-140.
  • Mobbs, D.C., Cannell, M.G.R., Crout, N.M.J., Lawson, G.J., Friend, A.D. and Arah, J., 1998. Complementarity of light and water use in tropical agroforests - I. Theoretical model outline, performance and sensitivity. FOREST ECOL MANAG, v. 102, p.259-274.

1997

  • Friend, A.D., Stevens, A.K., Knox, R.G. and Cannell, M.G.R., 1997. A process-based, terrestrial biosphere model of ecosystem dynamics (Hybrid v3.0). ECOL MODEL, v. 95, p.249-287.

1996

  • Kramer, K., Friend, A. and Leinonen, I., 1996. Modelling comparison to evaluate the importance of phenology and spring frost damage for the effects of climate change on growth of mixed temperate-zone deciduous forests. CLIMATE RES, v. 7, p.31-41.

1995

  • FRIEND, A.D., 1995. PGEN - AN INTEGRATED MODEL OF LEAF PHOTOSYNTHESIS, TRANSPIRATION, AND CONDUCTANCE. ECOL MODEL, v. 77, p.233-255.

1994

  • Murray, M.B., Smith, R.I., Leith, I.D., Fowler, D., Lee, H.S., Friend, A.D. and Jarvis, P.G., 1994. Effects of elevated CO(2), nutrition and climatic warming on bud phenology in Sitka spruce (Picea sitchensis) and their impact on the risk of frost damage. Tree Physiol, v. 14, p.691-706. doi:10.1093/treephys/14.7-8-9.691.

1993

  • FRIEND, A.D., SCHUGART, H.H. and RUNNING, S.W., 1993. A PHYSIOLOGY-BASED GAP MODEL OF FOREST DYNAMICS. ECOLOGY, v. 74, p.792-797.

1991

  • FRIEND, A.D., 1991. USE OF A MODEL OF PHOTOSYNTHESIS AND LEAF MICROENVIRONMENT TO PREDICT OPTIMAL STOMATAL CONDUCTANCE AND LEAF NITROGEN PARTITIONING. PLANT CELL ENVIRON, v. 14, p.895-905.

1990

  • Friend, A.D. and Woodward, F.I., 1990. Evolutionary and Ecophysiological Responses of Mountain Plants to the Growing Season Environment. Advances in Ecological Research, v. 20, p.59-124. doi:10.1016/S0065-2504(08)60053-7.

1989

  • FRIEND, A.D., WOODWARD, F.I. and SWITSUR, V.R., 1989. FIELD-MEASUREMENTS OF PHOTOSYNTHESIS, STOMATAL CONDUCTANCE, LEAF NITROGEN AND DELTA-C-13 ALONG ALTITUDINAL GRADIENTS IN SCOTLAND. FUNCT ECOL, v. 3, p.117-122.

1988

  • WOODWARD, F.I. and FRIEND, A.D., 1988. CONTROLLED ENVIRONMENT STUDIES ON THE TEMPERATURE RESPONSES OF LEAF EXTENSION IN SPECIES OF POA WITH DIVERSE ALTITUDINAL RANGES. J EXP BOT, v. 39, p.411-420.

Conference proceedings

  • Wang, H.-.C., Friend, A. and Huang, C.-.Y., 2017. Simulating the Effects of Typhoon-Induced Defoliation on Forest Dynamics Using a Process-Based Model in a Subtropical Forest. p.3503-3506. doi:10.1109/igarss.2017.8127753.
  • Levy, P.E., Friend, A.D., White, A. and Cannell, M.G.R., 2004. The influence of land use change on global-scale fluxes of carbon from terrestrial ecosystems. CLIMATIC CHANGE, v. 67, p.185-209.
  • FRIEND, A.D. and COX, P.M., 1995. MODELING THE EFFECTS OF ATMOSPHERIC CO2 ON VEGETATION ATMOSPHERE INTERACTIONS. AGRICULTURAL AND FOREST METEOROLOGY, v. 73, p.285-295.

Internet publications

  • Hayat, A., Hacket-Pain, A.J., Pretzsch, H., Rademacher, T.T. and Friend, A.D.Modelling tree growth taking into account carbon source and sink limitations, Cold Spring Harbor Laboratory. doi:10.1101/063594.

Other publications

  • Chen, Y., Eckes-Shephard, A., Rademacher, T., Fonti, P., LeMoine, J., Yu, K., Ju, W., Richardson, A. and Friend, A.. Divergent responses of photosynthesis and wood growth to climatic drivers. doi:10.21203/rs.3.rs-2300158/v1.

Theses / dissertations

  • Friend, A.D., 1989. Investigations on the physiological basis of adaptation to altitude in Nardus stricta L. doi:10.17863/CAM.17282.

Teaching and Supervisions

Teaching: 

 

  • Undergraduate: Biogeography (second and third year Geography)
  • Graduate: MPhil in Holocene Climates
Research supervision: 

I welcome the opportunity to supervise PhD students who wish to work on modelling and observations in the areas of plant physiology, ecosystem dynamics, global biogeochemical cycles (especially the global carbon cycle), and/or climate systems, especially where one or more of these elements are coupled.

An example of a possible topic is shown at the end of this page, but many other topics are of equal interest – please feel free to suggest what you would like to work on within the general research areas described here.

Other Professional Activities

External activities

  • European Geosciences Union (member)
Professor of Earth Systems Science and Fellow of Clare College