The University of Sheffield
Department of Animal and Plant Sciences

Professor Terry V Callaghan

Prof Terry Callaghan

Tel: +44 (0)114 222 6101
Fax: +44 (0)114 268 2521

email : t.v.callaghan@sheffield.ac.uk





Career

BSc (1967) University of Manchester; PhD (1972) University of Birmingham; PhD Honorary (1991) University of Lund; DSc (1993) Manchester Ph.D. Honorary (2002) University of Oulu, Elected Member of the Royal Swedish Academy of Sciences (2002)
Research Associate, University of Birmingham (1967-69)
Research Fellow, University of York (1969-72)
Royal Society Research Fellow, University of Manchester (1972-73); 1973-74, Scientific Officer, British Antarctic Survey; 1974-1993, Senior Scientific Officer to Individual Merit Senior Principal Scientific Officer, Institute of Terrestrial Ecology; 1993-95, Professor of Arctic Biology and Director, Centre for Arctic Biology, Univ. Manchester; 1995- Professor of Arctic Ecology and Director Sheffield Centre for Arctic Ecology, Univ. Sheffield. 1997- (concurrent with previous) Director, Royal Swedish Academy of Sciences' Abisko Scientific Research Station Sweden 1996-2002, Director Climate Impacts Research Centre, Kiruna Sweden 1997, Professor of Arctic Ecology, Univ. Lund Sweden.

Prizes

2007 - Nobel Peace Prize as one of the Lead Authors of the IPCC (group aaward to the authors of IPCC, together with Al Gore)
2006 - The Zayed International Prize for the Environment (group award to the authors of the Millienium Ecosystem Assessment)

Key Research Interests

image of flowers

Research focuses on relationships between the arctic environment and the ecology of arctic plants and animals including ecosystem processes. The research has two components: seeking to understand mechanisms of survival and adaptation to arctic environments, and assessing the responses of organisms and ecosystems to changing environmental conditions such as climate, UV-B radiation and atmospheric CO2 concentrations.





Professional Activities (2000 onwards)

Member, United Nations Environment Programme on Stratospheric Ozone Depletion Effects.

Director, Royal Swedish Academy of Sciences' Abisko Scientific Research Station.

Co-ordinator SCANNET (Scandinavian - North European network of terrestrial field bases)

Co-chair of CEON – a US initiative "Circumarctic environmental observatories network"

Member of the Integration Team, Steering Committee and lead author of the Arctic Climate

Impacts Assessment: an ACIA representative at meetings of the Senior Arctic Officials.

Lead author of the Millennium Assessment of polar ecosystems

Lead author of the IPCC assessment of polar regions

Leader of several international Arctic research strategy initiatives.

Member of the US National Academy of Sciences committee on designing a circumarctic observatories network

Leader of the Arctic Council of Ministers' initiative on coordination of observation and monitoring in the Arctic

Current Research Students

Margareta Johansson - Co-supervised
University of Lund, Sweden, working on interactions between permafrost dynamics and vegetation change.

Zhenlin Yang - Co-supervised
University of Lund, Sweden

Michal Heliasz - Co-supervised
University of Lund, Sweden

Rik Van Bogaert - Co-supervised
University of Ghent, Belgium

Oriuol Grau - Co-supervised
University of Barcelona, Spain

Recent Publications (2001 to date)

Edited Volumes (*** denotes internationally, peer-reviewed articles)

1. ACIA (in press) Arctic Climate Impact Assessment. Cambridge University Press.***

2. ACIA (2004). Impacts of a Warming Arctic. Cambridge University Press, 139 pp.***

3. Callaghan, T.V. (ed.) (2004). Climate Change and UV-B impacts on Arctic Tundra and Polar Desert Ecosystems. Ambio 33, Special Issue 7, 385-479.***

4. Callaghan, T.V. (ed.) (2002). Dynamics of the tundra-taiga interface Ambio Special Report 12, 63 pp.***

Papers in Refereed Journals

1. Wolf, A. K. Larsson and T.V. Callaghan. (2008) Future vegetation changes in the Barents Region. Climatic Change 87, 51-73.

2. Wolf, A., Kozlov, M.V. and T.V. Callaghan (2008). Impact of non-outbreak insect damage on vegetation in northern Europe will be greater than expected during a changing climate. Climatic Change 87, 91-106.

3. Wolf, A., Blyth, E., Harding, R., Jacob, D., Keup-Thiel, E., Goettel, H. and T. V. Callaghan. (2008) Sensitivity of an ecosystem model to hydrology and temperature. Climatic Change 87, 75-89.

4. Cornelissen, J. H.C., van Bodegom, P. M., Aerts, R., Callaghan, T.V., van Logtestijn, R.S.P., Alatalo, J., Chapin, F.S, Gerdol, R., Gudmundsson, J., Gwynn-Jones, D., Hartley, A.E., Hik, D.S., Hofgaard, A., Jónsdóttir, I.S., Karlsson, P.S., Klein, J.A., Laundre, J., Magnusson, B., Michelsen, A., Molau, U., Onipchenko, V., Quested, H.M., Sandvik, S.M., Schmidt, I.K., Shaver, G.R., Solheim, B., Soudzilovskaia, N., Stenström, A., Tolvanen, A., Totland, Ø., Wada, N., Welker, J.M., Zhao, X-Q. (in press). Global negative vegetation feedback to climate warming responses of leaf litter decomposition rates in cold biomes. Ecology Letters.

5. Johansson, M., Åkerman, H.J., Jonasson, C., Christensen, T.R. and T. V. Callaghan (2008). Increasing Permafrost Temperatures in Subarctic Sweden. In: Kane, D.L. & Hinkel, K.M (eds). Ninth International Conference on Permafrost. Institute of Northern Engineering, University of Alaska Fairbanks (Vol. I). pp.851-856.

6. William K. Cornwell, Johannes H. C. Cornelissen, Kathryn Amatangelo, Ellen Dorrepaal, Valerie T. Eviner, Oscar Godoy, Sarah E. Hobbie, Bart Hoorens, Hiroko Kurokawa, Natalia Perez Harguindeguy, Helen M. Quested, Louis S. Santiago, David A.Wardle, Ian J. Wright, Rien Aerts, Steve Allison, Peter van Bodegom, Victor Brovkin, Terry Callaghan, Sandra Diaz, Eric Garnier, Diego E. Gurvich, Elena Kazakou, Julia A. Klein, Jenny Read, Nadejda A. Soudzilovskaia, M. Vittoria Vaieretti, Mark Westoby (in press) The leaf economic trait spectrum drives litter decomposition rates in regional floras worldwide. Ecology Letters

7. Aerts, R., Cornelissen, J.H.C., van Logtestijn, R.S.P., and T.V. Callaghan (2007). Climate change has only a minor impact on nutrient resorption parameters in a high-latitude peatland. Oecologia 151: 132-139.

8. Christensen, T.R., Johansson, T., Olsrud, M., Ström, L., Lindroth, A., Mastepanov, M, Malmer, N., Friborg, T., Crill, P. & T.V. Callaghan (2007). A catchment-scale carbon and green house gas budget of a subarctic landscape. Phil. Trans. R. Soc. A. 365: 1643-1656.

9. Dorrepaal, E., Aerts, R., Cornelissen, H.J.C., van Logtestijn, R.S.P., and T.V. Callaghan (2006) Sphagnum modifies climate -change impacts on subarctic vascular bog plants. Functional Ecology 20,31-41.

10. Kohler, J., Brandt, O., Johansson, M. and T.V. Callaghan. (2006). A long record of arctic snow-depth measurements from Abisko, northern Sweden, 1913-2002. Polar Research 25: 91-113.

11. Johansson, M., Christensen, T.R., Akerman, H.J. and T. V. Callaghan (2006) What determines the current presence or absence of permafrost in the Torneträsk Region, a Sub-arctic landscape in Northern Sweden? Ambio 35: 190-197.

12. Rozema, J., Boelen, P., Solheim, B., Zielke, M., Buskens, A., Doorenbosch, M., Fijn, R., Herder, J., Callaghan, T.V., Bjorn, L.O., Gwyn Jones, D., Broekman, R., Blokker, P. and van de Poll, W. (2006). Stratospheric ozone depletion: high arctic tundra plant growth on Svalbard is not affected by enhanced UV-B after 7 years of supplementation in the field. Plant Ecology 182: 223-238.

13. Chapin, F. S., III, M. Hoel, S. R. Carpenter, J. Lubchenco, B. Walker, S., T. V. Callaghan, C. Folke, S. Levin, K.-G. Mäler, C. Nilsson, Barrett, S., Berkes, F., Crepin, A-S., Danell, K., Rosswall, T., Starrett, D., Xepapadeas, A., Zimov, S.A. (2006). Building Resilience to Manage Arctic Change. Ambio.35: 198-202.

14. Cornelissen, J.H.C., Quested, H.M., van Logtestijn, R.S.P., Pérez-Harguindeguy, N., Gwynn-Jones, D., Díaz, S., Callaghan, T.V., Press, M.C. and R. Aerts (2006). Is foliar pH a useful new predictor of leaf chemistry, leaf digestibility and litter decomposability among subarctic plant species and types? Oecologia

15. Walker, M., Wahren, H., Ahlquist, L., Alatolo, J., Bret-Harte, S., Calef, M., Callaghan, T.V., Carroll, A., Copass, C., Epstein, H., Henry, G., Hollister, R., Jonsdottír, I.S., Klein, J., Magnusson, B., Molau, U., Oberbauer, S., Rewa, S., Robinson, C., Shaver, G., Suding, K., Tolvanen, A., Totland, Ø., Turner, P.L., Tweedie, C., Webber, P., Wookey, P.A. (2006). Plant community responses to experimental warming across the tundra biome. PNAS 103, 1342-1346

16. Quested, H.M., Callaghan, T.V., Cornelissen, H.J. and Press, M.C. (2005) The impacts of hemiparasitic plant species litter on decomposition: direct, seasonal and litter mixing effects J. Ecol.

17. Andrady, A., Aucamp, P.J., Bais, A.F., Ballaré, C., Björn, L.O., Bornman, J., Caldwell, M., Callaghan, T.V., Cullen, A.P., Erikson, D.J., de Gruijl, F.R., Häder, D-P., Ilyas, M., Kulandaivelu, G., Kumar, H.D., Longstreth, J., McKenzie, R.L., Norval, M., Redhwi, H.H., Smith, R.C., Solomon, K.R., Sulzberger, B., Takizawa, Y., Tang, X., Teramura, A.H., Toikai, A., van der Leun, J.C., Wilson, S.R., Worrest, R.C. and R. Zepp (2005). Environmental effects of ozone depletion and its interaction with climate change: progress report, 2004. Photochem. Photobiol. Sci. 4, 177 – 184.

18. Bjerke, J. W., Gwynn-Jones, D. & Callaghan, T. V. (2005). Effects of enhanced UV-B radiation in the field on the concentration of phenolics and chlorophyll fluorescence in two boreal and arctic-alpine lichens. Environmental and Experimental Botany, 53, 139-149.

19. Aerts, R., Cornelissen, J.H.C., Dorrepaal, E., van Logtestijn, R.S.P. and Callaghan, T.V. (2004) Effects of experimentally imposed climate scenarios on flowering phenology and flower production of sub-arctic bog species. Global Change Biology 10, 1599-1609.

20. Callaghan, T.V. (2004). Climate Change and UV-B impacts on Arctic Tundra and Polar Desert Ecosystems: Editorial. Ambio 33, Special Issue 7, page 385.

21. Callaghan, T, V., Björn, L. O., Chernov, Y, Chapin, III. F. S., Christensen, T. R., Huntley, B., Ims, R. A., Johansson, M., Jolly, D., Jonasson, S., Matveyeva, N., Panikov, N., Oechel, W. C., Shaver, G. R. Elster, J., Henttonen, H., Jonsdottir, I. S., Laine, K., Schaphoff, S., Sitch, S., Taulavuori, K., Taulavuori, E. and Zöckler, C. (2004) . Climate Change and UV-B impacts on Arctic Tundra and Polar Desert Ecosystems: Key findings and extended summaries. Ambio 33, Special Issue 7, 386-392.

22. Callaghan, T, V., Björn, L. O., Chernov, Y, Chapin, III. F. S., Christensen, T. R., Huntley, B., Ims, R. A., Johansson, M., Jolly, D., Jonasson, S., Matveyeva, N., Panikov, N., Oechel, W. C. and Shaver, G. R. (2004). Climate Change and UV-B impacts on Arctic Tundra and Polar Desert Ecosystems: Rationale, concepts and approach to the assessment. Ambio 33, Special Issue 7, 393-397.

23. Callaghan, T, V., Björn, L. O., Chernov, Y, Chapin, III. F. S., Christensen, T. R., Huntley, B., Ims, R. A., Jolly, D., Johansson, M., Jonasson, S., Matveyeva, N., Panikov, N., Oechel, W. C. and Shaver, G. R. (2004). Climate Change and UV-B impacts on Arctic Tundra and Polar Desert Ecosystems: Past changes in arctic terrestrial ecosystems, climate and UV-B radiation. Ambio 33, Special Issue 7, 398-403.

24. Callaghan, T, V., Björn, L. O., Chernov, Y, Chapin, III. F. S., Christensen, T. R., Huntley, B., Ims, R. A., Jolly, D., Johansson, M., Jonasson, S., Matveyeva, N., Panikov, N., Oechel, W. C., Shaver, G. R., Elster, J., Henttonen, H., Laine, K., Taulavuori, K., Taulavuori, E. and Zöckler, C. (2004). Climate Change and UV-B impacts on Arctic Tundra and Polar Desert Ecosystems: Biodiversity, distributions and adaptations of Arctic species in the context of environmental change. Ambio 33, Special Issue 7, 404-417.

25. Callaghan, T, V., Björn, L. O., Chernov, Y, Chapin, III. F. S., Christensen, T. R., Huntley, B., Ims, R. A., Jolly, D., Johansson, M., Jonasson, S., Matveyeva, N., Panikov, N., Oechel, W. C., Shaver, G. R., Elster, J., Jonsdottir, I. S., Laine, K., Taulavuori, K., Taulavuori, E. and Zöckler, C. (2004). Climate Change and UV-B impacts on Arctic Tundra and Polar Desert Ecosystems: Responses to projected changes in climate and UV-B at the species level. Ambio 33, Special Issue 7, 418-435.

26. Callaghan, T, V., Björn, L. O., Chernov, Y, Chapin, III. F. S., Christensen, T. R., Huntley, B., Ims, R. A., Johansson, M., Jolly, D., Jonasson, S., Matveyeva, N., Panikov, N., Oechel, W. C., Shaver, G. R. and Henttonen, H. (2004). Climate Change and UV-B impacts on Arctic Tundra and Polar Desert Ecosystems: Effects on the structure of Arctic ecosystems in the short- and long-term perspectives. Ambio 33, Special Issue 7, 436-447.

27. Callaghan, T, V., Björn, L. O., Chernov, Y, Chapin, III. F. S., Christensen, T. R., Huntley, B., Ims, R. A., Jolly, D., Johansson, M., Jonasson, S., Matveyeva, N., Panikov, N., Oechel, W. C. and Shaver, G. R. (2004). Climate Change and UV-B impacts on Arctic Tundra and Polar Desert Ecosystems: Effects on the function of Arctic ecosystems in the short- and long-term perspectives. Ambio 33, Special Issue 7, 448-458.

28. Callaghan, T, V., Björn, L. O., Chernov, Y, Chapin, III. F. S., Christensen, T. R., Huntley, B., Ims, R. A., Jolly, D., Johansson, M., Jonasson, S., Matveyeva, N., Panikov, N., Oechel, W. C., Shaver, G. R., Schaphoff, S. and Sitch, S. (2004). Climate Change and UV-B impacts on Arctic Tundra and Polar Desert Ecosystems: Effects of changes in climate on landscape and regional processes, and feedbacks to the climate system. Ambio 33, Special Issue 7, 459-468.

29. Callaghan, T, V., Björn, L. O., Chernov, Y, Chapin, III. F. S., Christensen, T. R., Huntley, B., Ims, R. A., Johansson, M., Jolly, D., Jonasson, S., Matveyeva, N., Panikov, N., Oechel, W. C., Shaver, G. R., Schaphoff, S., Sitch, S., and Zöckler, C. (2004) . Climate Change and UV-B impacts on Arctic Tundra and Polar Desert Ecosystems: Synthesis of effects in four Arctic sub-regions. Ambio 33, Special Issue 7, 469-473.

30. Callaghan, T, V., Björn, L. O., Chernov, Y, Chapin, III. F. S., Christensen, T. R., Huntley, B., Ims, R. A., Johansson, M., Jolly, D., Jonasson, S., Matveyeva, N., Panikov, N., Oechel, W. C., Shaver, G. R. Elster, J., Henttonen, H., Jonsdottir, I. S., Laine, K., Schaphoff, S., Sitch, S., Taulavuori, K., Taulavuori, E. and Zöckler, C. (2004) . Climate Change and UV-B impacts on Arctic Tundra and Polar Desert Ecosystems: Uncertainties and recommendations. Ambio 33, Special Issue 7, 474-479.

31. Callaghan, T.V., Johansson, M., Heal, O.W., Sælthun, N.R., Barkved, L.J., Bayfield, N., Brandt, O., Brooker, R., Christiansen, H.H, Forchhammer, M., Høye, T.T., Humlum, O., Järvinen, A., Jonasson, C., Kohler, J., Magnusson, B., Meltofte, H., Mortensen, L., Neuvonen, S., Pearce, I., Rasch M., Turner, L., Hasholt, B, Huhta, E., Leskinen, E., Nielsen, N and Siikamäki, P. (2004) Environmental Changes in the North Atlantic Region: SCANNET as a collaborative approach for documenting, understanding and predicting changes. Ambio Special Report 13, 39-50.

32. Chapin, F.S.III, Peterson, G., Berkes, F. Callaghan, T. V., Angelstam, P., Apps, M., Beier, C., Bergeron, Y., Crepin, A.-S., Elmqvist, T., Folke, C., Forbes, B., Fresco, N., Juday, G., Niemela, J., Shvidenko, A. and G. Whiteman (2004). Resilience and Vulnerability of Northern Regions to Social and Environmental Change Ambio 33: 344-349.

33. Chapin, F.S. III, Bergeron, Y., Callaghan, T.V., Fukuda, M., Johnstone, J.F., Juday, G. and S.A. Zimov (2004) Global change and the Boreal Forest: Resilience leads to Thresholds and shifting States rather than Gradual Change. Ambio 33: 361-365.

34. Cornelissen, J.H.C., Quested, H.M., Gwynn-Jones, D., van Logtestijn, R.S.P., de Beus, M., Kondratchuk, A., Callaghan, T.V. and Aerts, R. (2004) Leaf digestibility and litter decomposability are linked in a wide range of subarctic plant species. Functional Ecology 18: 779-786.

35. Huntington, H., Callaghan, T.V., Fox, S.H., and Krupnik, I. (2004) Matching Traditional and Scientific Observations to Detect Environmental Change: A Discussion on Arctic Terrestrial Ecosystems Ambio Special Report 13, 18-23.

36. Dorrepaal, E., Aerts, R., Cornelissen, J.H.C., Callaghan, T.V. and van Logtestijn, R.S.P. (2003). Summer warming and increased winter snow cover affect Sphagnum fuscum growth, structure and production in a sub-arctic bog. Global Change Biology 10: 93-104.

37. Johnson, D., Campbell, C.D., Lee, J.A., Callaghan, T.V. and Gwynn-Jones, D., (2003). Nitrogen storage (communication arising): UV-B radiation and soil microbial communities. Nature 423: 138.

38. Lange, M., Callaghan, T.V. (and 12 others) (2003). The Barents Sea impact study (BASIS): methodology and first results. Continental Shelf research 23: 1673-1694.

39. Phoenix, G., Gwynn-Jones, D., Lee J.A. & Callaghan, T.V. (2003).
Ecological importance of ambient solar ultraviolet radiation to a sub arctic heath community. Plant Ecology 165: 263-273.

40. Quested, H. M., Cornelissen, J.H.C., Press, M.C., Callaghan, T.V., Aerts, R, Trosien, F., Riemann, P., Gwynn-Jones, D., Kondratchuck, A. and Jonasson, S. (2003). Litter decomposition of subarctic plant species with differing nitrogen economies: the potential functional role of hemiparasites. Ecology 84(12): 3209-3221.

41.Quested, H.M., Press, M.C., & Callaghan, T.V. (2003). Litter of the hemiparasite Bartsia alpine enhances plant growth: evidence for a functional role in nutrient cycling. Oecologia 135: 606-614.

42. Semerdjieva, S.I., Phoenix, G. K., Hares, D., Gwynn-Jones, D., Callaghan, T.V. and Sheffield, E. (2003). Surface morphology, leaf and cuticle thickness of four dwarf shrubs from a sub-Arctic heath following long-term exposure to enhanced levels of UV-B. Physiologia Plantarum 117: 289-294

43. Semerdjieva, S.I., Sheffield, E., Phoenix, G. K., Gwynn-Jones, D., Callaghan, T.V. and Johnson, G. (2003) Contrasting strategies for UV-B screening in sub-Arctic dwarf shrubs. Plant, Cell, Environment 26: 957-964.

44. Wijk, M. van, Clemmensen, K.E., Shaver, G.R., Williams, M., Callaghan, T.V., Chapin III, F.S., Cornelissen, J.H.C., Gough, L., Hobbie, S.E., Jonasson, S., Lee, J.A., Michelsen, A., Press, M.C., Richardson, S.J. and Rueth, H. (2003). Long-term ecosystem level experiments at Toolik Lake, Alaska, and at Abisko, Northern Sweden: generalisations and differences in ecosystem and plant type responses to global change. Global Change Biology 10, 105-123

45. Zepp, R. G., Callaghan, T.V. and Erikson III, D. J. (2003). Effects of increased solar untraviolet radiation and climate change on biogeochemical cycles. Photochemical and Photobiological Sciences, 2: 51-61

46. Callaghan, T.V. . (2002) Dynamics of the tundra-taiga interface: the context of the Ambio Special report 12. Ambio Special Report 12, 63

47. Callaghan, T.V., Werkman, B.R. and R.M.M. Crawford. (2002). The Tundra-taiga interface and its dynamics: concepts and introduction. Ambio Special Issue 12, 6-14

48. Callaghan, TV, Werkman, B., Crawford, RMM, Eronen, M, Hofgaard, A, Payette, S, Rees, G, Skre, O, Sveinbjörnsson, B and Vlassova, TK (2002) The dynamics of the tundra taiga boundary: an overview and a co-ordinated and integrated approach to research Ambio Special Report 12, 3-5

49. Johnson, D., Campbell, C.D., Lee, J.A., Callaghan, T.V. and Gwynn-Jones, D., (2002). Arctic soil microorganisms respond more to long-term ozone depletion than to atmospheric CO2. Nature 416, 82-83

50. Jonasson, C., Gude, M. and Callaghan, T.V. (2002). Geomorphological research at the Abisko Scientific Research Station. Geografiska Annaler series A, 84A: 137-138.

51. Quested, H., Callaghan, T.V. and Press, M.C. (2002) The hemiparasitic angiosperm Bartsia alpine has the potential to accelerate decomposition in sub-arctic communities Oecologia 130, 88-95.

52. Skre, O., Baxter, R., Crawford, R., Callaghan, T.V. and A. Fedorkov (2002) How will the tundra-taiga interface respond to climate change? Ambio Special Report 12, 37-46

53. Sonesson, M., Carlsson, B.A., Callaghan, T.V., Halling, S., Bjorn, L.O. Bertgren, M. and Johanson, U. (2002). Growth of two peat-forming mosses in subarctic mires: species interactions and effects of simulated climate change.Oikos 99: 151-160.

54. Solheim, B., Johanson, U., Callaghan, T.V., Lee, J.A., Gwynn Jones, D. and L.O. Bjorn (2002). The nitrogen fixation potential of arctic cryptogam species is influenced by enhanced UV-B radiation. Oecologia 133: 90-93.

55. Werkman, BR and Callaghan, TV (2002). Responses of bracken and heather to increased temperature and nitrogen addition, alone and in competition. Basic and Applied Ecology, 3: 267-276.

56. Beerling, D.J., Terry, A.C., Mitchell, P.L., Gwynn Jones, D., Lee, J.A. and Callaghan, T.V. (2001) Time to chill: effects of simulated global change on leaf ice nucleation temperatures of sub-arctic vegetation. American Journal of Botany. 88(4), 628-633.

57. Brooker, R.W., Carlsson, B.Å. and Callaghan, T.V. (2001) Carex bigelowii Torrey ex Schweinitz (C. rigida Good., non Schrank; C. hyperborean Dreyer).– Biological Flora of the British Isles. J. Ecol. 89: 1072-1095

58. Cornelissen, JHC, Callaghan, TV, Alatalo, JM, Hartley, AE, Hik, DS, Hobbie, SE, Press, MC, Robinson, CH, Shaver, GR, Phoenix, GR, Gwynn Jones, D, Jonasson, S, Sonesson, M., Chapin, FS III, Molau, U and Lee, JA (2001). Global change and arctic ecosystems: is lichen decline a function of increases in vascular plant biomass? J. Ecol. 89: 984-994

59. Emmerton, K.S., Callaghan, T.V., Jones, H.E., Leake, J.R., Michelsen, A. and Read, D.J. (2001). Assimilation and isotopic fractionation of nitrogen by mycorrhizal fungi New Phytologist 151: 503-511

60. Emmerton, K.S. ., Callaghan, T.V., Jones, H.E., Leake, J.R., Michelsen, A. and Read, D.J. (2001). Assimilation and isotopic fractionation of nitrogen by mycorrhizal and nonmycorrhizal subarctic plants. New Phytologist 151: 513-524.

61. Moody, S., Paul, N.D., Bjorn. L.O., Callaghan, T.V., Lee, J.A., Manetas, Y., Rozema, J., Gwynn-Jones, D., Johanson, U., Kyparissis, A. and Oudejans, A. (2001). The direct effects of UVB radiation on Betula pubescens litter decomposing at four European field sites. Plant Ecology 154: 29-36.

62. Phoenix, G., Gwynn-Jones, D., Callaghan, T.V. , Sleep, D. & Lee J.A (2001). Effects of global change on a sub-arctic heath: effects of enhanced UV-B radiation and increased summer precipitation. J. Ecol. 89: 256-267.

63. Post, E., Forchhammer, M., Stenseth, N.C. and Callaghan, T.V. (2001) The timing of life history events in a changing climate. Proc. R. Soc. Lond. B 268: 15-23.

64. Ross, S.E., Callaghan, T.V., Sheffield, E. and M. Sonesson (2001). Variation and control of growth form in the moss Hylocomium splendens J. Bryology 23: 283-292.

Papers in Refereed Conference Proceedings and Books

1. Callaghan, T.V., Björn. L.O., Chernov, Y., Chapin, F.S., Christensen, T.R., Huntley, B., Ims, R., Jonasson, S., Jolly, D., Matveyeva, N., Panikov, N., Oechel, W.C., Shaver, G.R. and others (in press). Tundra and Polar Desert Ecosystems. In: Corell, R. (ed.). Arctic Climate Impacts Assessment: Technical report to the Arctic Council of Ministers. Cambridge University Press.

2. Chapin, F.S. III, M. Berman, T.V. Callaghan, A-S.e Crepin, K. Danell, B. Forbes, G. Kofinas, D. McGuire, M. Nuttall, C. Pungowiyi, O. Young, and S. Zimov (with contributions from T. Christensen, A. Goduhn) (In Press) Polar ecosystems. In Millennium Assessment.

3. Huntington, H. P.,Weller, G., Bush, E., Callaghan, T.V., Kattsov, V. and M. Nuttall In press. Chapter 1: An Introduction to the Arctic Climate Impact Assessment In: Corell, R. (ed.). Arctic Climate Impacts Assessment: Technical report to the Arctic Council of Ministers. Cambridge University Press

4. Weller, G., Bush, E., Callaghan, T.V., Corell, R., Furgal, C., Hoel, A.H., Huntington, H., Klein, D., Loeng, H., Martello, M., MacCracken, M., Reist, J., Reiersen, L.-O., Transkanen, A., Walsh, J., Wrona, F. (in press) Chapter 17: synthesis of the arctic climate impact assessment. In: Corell, R. (ed.). Arctic Climate Impacts Assessment: Technical report to the Arctic Council of Ministers. Cambridge University Press.

5. Usher, M., Callaghan, T.V., Gilchrist, G., Heal, O.W., Prestrud, P. (in press). Biodiversity and conservation. In: Corell, R. (ed.). Arctic Climate Impacts Assessment: Technical report to the Arctic Council of Ministers. Cambridge University Press

6. Callaghan, T.V. (2004). Copse. In: M. Nutall (ed.). Encylopedia of the Arctic. Routledge, New York. Pp. 444-445. In: M. Nutall (ed.).

7. Callaghan, T.V. and M.J. Johansson (2004). Biodiversity Research Programmes. Encylopedia of the Arctic. Routledge, New York. Pp. 251-257.

8. Heal, O. W., N. Bayfield, T. V. Callaghan, T.T. Høye, A. Järvinen, M. Johansson, J. Kohler, B. Magnusson, L. Mortensen, S: Neuvonen, M. Rasch , N.R. Saelthun, (2003). SCANNET: A Scandinavian - North European Network of Terrestrial Field Bases. The mountains of north Europe: conservation, management and initiatives (2003) (ed by D.B.A. Thompson, M.F. Price and C.A. Galbraith). The stationery Office, Edinburgh. Pp. 359-364.

9. Zepp, R.G., Callaghan, T.V. and Erikson III, D. J. (2003). Interactive effects of ozone depletion and climate change on biogeochemical cycles. Montreal Protocol on substances that deplete the ozone layer. Environmental Effects of Ozone Depletion and its Interaction with Climate Change; 2002 Assessment, UNEP pp.105-130.

10. Callaghan, T.V. , N. Matveyeva, Y. Chernov and Brooker, R. (2001).
"Arctic Ecosystems." In Levin, S. A. (ed.) Encyclopedia of Biodiversity. V1:231-247. Academic Press: San Diego

11. Callaghan, T.V. (2001). Arctic terrestrial ecosystems. In; Encyclopedia of Life Sciences, London: Nature publishing group, www.els.net

Non-refereed Papers and Contract Reports (not exhaustive)

1. Callaghan, T.V. (2008). Polar Terrestrial Ecology. Encyclopaedia of Ecology, Elsevier

2. Callaghan, T.V., Jonasson, C., Christensen, T.R., Johansson, M., Johansson, T. and A. Wolf (2007). Current and projected impacts of climate change on landscapes and ecosystems of the European sub-Arctic. Pages 120-123. In: Cardinal, D. and E. Lipiatou (eds.) Polar Environment and Climate: The Challenges. International symposium, Brussels 5-6 March 2007. European Research in the Context of the International Polar Year. Directorate-General for Research Environment Programme EUR 22965 EN, Brussels, 197 pp.

3. Allison, I. And T.V. Callaghan (2007). Session on Research Infrastructures. Pages 102-103 In: Cardinal, D. and E. Lipiatou (eds.) Polar Environment and Climate: The Challenges. International symposium, Brussels 5-6 March 2007. European Research in the Context of the International Polar Year. Directorate-general for Research Environment Programme EUR 22965 EN, Brussels, 197 pp.

4.Callaghan, T.V. (2005) "Copse" In: Nuttal, M. (ed. ) Encyclopedia of the Arctic, Vol. 1. 444-445.

5. Callaghan, T.V. and Johansson, M. (2005) "Biodiversity Programmes" In Nuttall, M. (ed.) Encyclopedia of the Arctic, Vol. 1, 251-257

6. Callaghan, T. V. and M. Johansson (Eds.), (2004). Scandinavian/North European Network of Terrestrial Field Bases – SCANNET. Third Annual Report. 300 pp.

7. Callaghan, T. V. and M. Johansson (Eds.), (2004). Scandinavian/North European Network of Terrestrial Field Bases – SCANNET. Final Report. 150 pp.

8. Shaver, G.R., Callaghan, T.V., Tweedie, C.E. and Webber, P.J. (2004). Flagship Observatories for Arctic Environmental Research and Monitoring. Ecosystems Centre, Woods Hole, 24 pp.

9. Callaghan, T. V. and M. Johansson (Eds.), (2003). Scandinavian/North European Network of Terrestrial Field Bases – SCANNET. Second Annual Report. 248 pp.

10. Callaghan, T. V. and M. Johansson (Eds.), (2002). Scandinavian/North European Network of Terrestrial Field Bases – SCANNET. First Annual Report. 174 pp.

11. Callaghan, T. V. and M. Johansson, (2001): Climate Change Impacts on the subarctic ecosystems of the Abisko area, Northernmost Sweden. Conference Proceedings, International Symposium – Arctic Feedbacks to Global Change, Rovaniemi, Finland, 25-27 October, 2001.

12. Heal, O. W, T.V. Callaghan et al., (2001). Monitoring in the Arctic: SCANNET. Conference Proceedings from Detecting Environmental Change: Science and Society – 17-20th July 2001, London UK.

Teaching

APS223 World Ecosystems

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