Tanya Handa

Chercheur régulier
Conséquences des changements globaux sur les processus écosystémiques

Département des sciences biologiques
Université du Québec à Montréal
Case postale 8888, succursale Centre-ville
Montréal (Québec) Canada H3C 3P8

Tel.: (514) 987-3000, poste 1644
Tel. laboratoire: poste 8416


Dr. Tanya Handa holds a B.Sc. (1996) in biology from McGill University, a M.Sc. in botany from the University of Toronto and a Ph.D. (2006) in plant ecology from the University of Basel (Switzerland). Following a post-doctoral fellowship (2007-2010) at the Center of Functional Ecology and Evolution (CEFE-CNRS) in Montpellier (France), she recently joined our department at Université du Québec à Montréal as a professor (August 2010). Broadly, her research interests are linked by the desire to understand the consequences of global change on ecosystem processes. She is interested in how changes such as rising atmospheric CO2 or urbanisation affect tree growth, as well as how changes in biodiversity influence litter decomposition and nutrient cycling in forest ecosystems.

You can download all my bibliography in the BibTeX, BibTeX-CSV or EndNote format


Book chapters

  1. Messier, C., Carpentier, S, Angers, V.-A., Tittler, R., St-Denis, A., Handa, I.T., Filotas, E., Paquette, A. (2015) La véritable valeur des arbres et bois urbains et péri-urbains. In L’économie de la biodiversité et des services produits par les écosystèmes: Un regard sur les concepts, outils et sur l’état de l’avancement de la recherche au Québec. (Revéret J-P and Dupras J, Eds.) Presses de l’Université du Québec
  2. Handa, I.T., Jefferies, R.L. (2009) Interactions between lesser snow geese and Arctic coastal vegetation leading to alternative stable states. (Chap. 15) In New Models for Ecosystem Dynamics and Restoration. (Hobbs, R.J. and Suding, K.N., Eds.) Island Press, pages 221-235

Edited books, special journal editions and proceedings

Peer-reviewed articles

  1. Dansereau-Macias, E., Despland, E., Handa, I.T. (2023) Decreased Soil Microbial Biomass and Changed Microbial Community Composition following a Defoliation Event by the Forest Tent Caterpillar. Forests, 14(4):792
  2. Caron, A.-S., Koudji, E.G., Handa, I.T., Montoro Girona, M., Despland, E. (2023) Forest Tent Caterpillar Outbreaks Drive Change in Ant Communities in Boreal Forests. Forests, 14(6):1147
  3. Raymond-Leonard, L.J., Cortet, J., Handa, I.T. (2023) Towards a standardization of new functional trait measurements by assessing intraspecific variation: the case of springtail mandibles. European Journal of Soil Biology, 117
  4. Ibarra-Isassi, J., Handa, I.T., Lessard, J.-P. (2023) Community-wide trait adaptation, but not plasticity, explains ant community structure in extreme environments. Functional Ecology, 37(1):139 – 149
  5. Gagnon Koudji, E., Despland, E., Caron, A.-S., Handa, I.T. (2023) Soil Springtail Communities Are Resilient to Forest Tent Caterpillar Defoliation in Quebec Mixed Hardwood Forests. Forests, 14(7)
  6. Martin-Guay, M.-O., Belluau, M., Cote, B., Handa, I.T., Jewell, M.D., Khlifa, R., Munson, A.D., Rivest, M., Whalen, J.K., Rivest, D. (2022) Tree identity and diversity directly affect soil moisture and temperature but not soil carbon ten years after planting. Ecology and Evolution, 12(1):e8509
  7. Kotze, D.J, Lowe, E.C., MacIvor, J.S., Ossola, A., Norton, B.A., Hochuli, D.F., Mata, L., Moretti, M., Gagné, S.A., Handa, I.T. et al. (2022) Urban forest invertebrates: how they shape and respond to the urban environment. Urban Ecosystems
  8. Santala, K., Cardou, F., Yemshanov, D., Campioni, F., Simpson, M., Handa, I.T., Ryser, P., Aubin, I. (2022) Finding the perfect mix: An applied model that integrates multiple ecosystem functions when designing restoration programs. Ecological Engineering, 180
  9. Malaterre, C., Dussault, A.C., Mermans, E., Barker, G., Beisner, B.E., Bouchard, F., Desjardins, E., Handa, I.T., Kembel, S.W., Lajoie, G. et al. (2021) Erratum: Functional diversity: An epistemic roadmap (BioScience DOI: 10.1093/biosci/biz089). BioScience, 71(9):996
  10. Laigle, I., Moretti, M., Rousseau, L., Gravel, D., Venier, L., Handa, I.T., Messier, C., Morris, D., Hazlett, P., Fleming, R. et al. (2021) Direct and Indirect Effects of Forest Anthropogenic Disturbance on Above and Below Ground Communities and Litter Decomposition. Ecosystems, 24(7):1716-1737
  11. Ramirez, J.A., Vitali, V., Martínez-Vilalta, J., Handa, I.T., Messier, C. (2021) Reserve Accumulation Is Prioritized Over Growth Following Single or Combined Injuries in Three Common North American Urban Tree Species. Frontiers in Plant Science, 12
  12. Ibarra-Isassi, J., Handa, I.T., Arenas-Clavijo, A., Escobar-Ramírez, S., Armbrecht, I., Lessard, J.-P. (2021) Shade-growing practices lessen the impact of coffee plantations on multiple dimensions of ant diversity. Journal of Applied Ecology, 58(5):919-930
  13. Brunet, N.D., Dagenais, D., Breux, S., Handa, I.T. (2020) A characterization of media representation of biodiversity and implications for public perceptions and environmental policy: the case of Québec, Canada. Environment, Development and Sustainability, 22(2):1655-1669
  14. Raymond-Léonard, L.J., Bouchard, M., Handa, I.T. (2020) Dead wood provides habitat for springtails across a latitudinal gradient of forests in Quebec, Canada. Forest Ecology and Management, 472
  15. Brousseau, P.-M., Giroux, M., Handa, I.T. (2020) First record on the biology of sarcophaga (Bulbostyla) (diptera, sarcophagidae). ZooKeys, 2020(909):59-66
  16. Zhou, S., Butenschoen, O., Barantal, S., Handa, I.T., Makkonen, M., Vos, V., Aerts, R., Berg, M.P., McKie, B., Van Ruijven, J. et al. (2020) Decomposition of leaf litter mixtures across biomes: The role of litter identity, diversity and soil fauna. Journal of Ecology, 108(6):2283-2297
  17. Malaterre, C., Dussault, A.C., Rousseau-Mermans, S., Barker, G., Beisner, B.E., Bouchard, F., Desjardins, E., Handa, I.T., Kembel, S.W., Lajoie, G. et al. (2019) Functional Diversity: An Epistemic Roadmap. BioScience, 69(10):800-811
  18. Raymond-Léonard, L.J., Gravel, D., Handa, I.T. (2019) A novel set of traits to describe Collembola mouthparts: taking a bite out of the broad chewing mandible classification. Soil Biology and Biochemistry, 138
  19. Rousseau, L., Venier, L., Aubin, I., Gendreau-Berthiaume, B., Moretti, M., Salmon, S., Handa, I.T. (2019) Woody biomass removal in harvested boreal forest leads to a partial functional homogenization of soil mesofaunal communities relative to unharvested forest. Soil Biology and Biochemistry, 133:129-136
  20. Brousseau, P.-M., Gravel, D., Handa, I.T. (2019) Traits of litter-dwelling forest arthropod predators and detritivores covary spatially with traits of their resources. Ecology, 100(10)
  21. Rousseau, L., Venier, L., Hazlett, P., Fleming, R., Morris, D., Handa, I.T. (2018) Forest floor mesofauna communities respond to a gradient of biomass removal and soil disturbance in a boreal jack pine (Pinus banksiana) stand of northeastern Ontario (Canada). Forest Ecology and Management, 407:155-165
  22. Brousseau, P.-M., Gravel, D., Handa, I.T. (2018) On the development of a predictive functional trait approach for studying terrestrial arthropods. Journal of Animal Ecology, 87(5):1209-1220
  23. Raymond-Léonard, L.J., Gravel, D., Reich, P.B., Handa, I.T. (2018) Springtail community structure is influenced by functional traits but not biogeographic origin of leaf litter in soils of novel forest ecosystems. Proceedings of the Royal Society B-Biological Sciences, 285(1879)
  24. Brousseau, P.-M., Gravel, D., Handa, I.T. (2018) Trait matching and phylogeny as predictors of predator-prey interactions involving ground beetles. Functional Ecology, 32(1):192-202
  25. Ramirez, J.A., Handa, I.T., Posada, J.M., Delagrange, S., Messier, C. (2018) Carbohydrate dynamics in roots, stems, and branches after maintenance pruning in two common urban tree species of North America. Urban Forestry and Urban Greening, 30:24-31
  26. Craven, D., Thakur, M.P., Cameron, E.K., Frelich, L.E., Beausejour, R., Blair, R.B., Blossey, B., Burtis, J., Choi, A., Davalos, A. et al. (2017) The unseen invaders: introduced earthworms as drivers of change in plant communities in North American forests (a meta-analysis). Global Change Biology, 23(3):1065-1074
  27. Carpentier, S., Filotas, E., Handa, I.T., Messier, C. (2017) Trade-offs between timber production, carbon stocking and habitat quality when managing woodlots for multiple ecosystem services. Environmental Conservation, 44(1):14-23
  28. Guerrero-Ramírez, N.R., Craven, D., Messier, C., Potvin, C., Turner, B.L., Handa, I.T. (2016) Root quality and decomposition environment, but not tree species richness, drive root decomposition in tropical forests. Plant and Soil, 404(1):125-139
  29. Garcia-Palacios, P., McKie, B.G., Handa, I.T., Frainer, A., Httenschwiler, S. (2016) The importance of litter traits and decomposers for litter decomposition: a comparison of aquatic and terrestrial ecosystems within and across biomes. Functional Ecology, 30(5):819-829
  30. Beausejour, R., Handa, I.T., Lechowicz, M.J., Gilbert, B., Vellend, M. (2015) Historical anthropogenic disturbances influence patterns of non-native earthworm and plant invasions in a temperate primary forest. Biological Invasions, 17(4):1267-1281
  31. Ramirez, J.A., Posada, J.M., Handa, I.T., Hoch, G., Vohland, M., Messier, C., Reu, B. (2015) Near-infrared spectroscopy (NIRS) predicts non-structural carbohydrate concentrations in different tissue types of a broad range of tree species. Methods in Ecology and Evolution, 6(9):1018-1025
  32. Brousseau, P.-M., Gravel, D., Handa, I.T. (2014) First Record In Canada of Onthophilus pluricostatus LeConte (Coleoptera: Histeridae) and a New Mention for the Rare Species Lordithon niger (Gravenhorst) (Coleoptera: Staphylinidae). Coleopterists Bulletin, 68(2):343-344
  33. Handa, I.T., Aerts, R., Berendse, F., Berg, M.P., Bruder, A., Butenschoen, O., Chauvet, E., Gessner, M.O., Jabiol, J., Makkonen, M. et al. (2014) Consequences of biodiversity loss for litter decomposition across biomes. Nature, 509(7499):218-221
  34. Hagedorn, F., Hiltbrunner, D., Streit, K., Ekblad, A., Lindahl, B., Miltner, A., Frey, B., Handa, I.T., Hattenschwiler, S. (2013) Nine years of CO2 enrichment at the alpine treeline stimulates soil respiration but does not alter soil microbial communities. Soil Biology and Biochemistry, 57:390-400
  35. Dawes, M.A., Hagedorn, F., Handa, I.T., Streit, K., Ekblad, A., Rixen, C., Korner, C., Hattenschwiler, S. (2013) An alpine treeline in a carbon dioxide-rich world: Synthesis of a nine-year free-air carbon dioxide enrichment study. Oecologia, 171(3):623-637
  36. Makkonen, M., Berg, M.P., Handa, I.T., Hattenschwiler, S., van Ruijven, J., van Bodegom, P.M., Aerts, R. (2012) Highly consistent effects of plant litter identity and functional traits on decomposition across a latitudinal gradient. Ecology Letters, 15(9):1033-1041
  37. Dawes, M.A., Hagedorn, F., Zumbrunn, T., Handa, I.T., Hattenschwiler, S., Wipf, S., Rixen, C. (2011) Growth and community responses of alpine dwarf shrubs to in situ CO 2 enrichment and soil warming. New Phytologist, 191(3):806-818
  38. Dawes, M.A., Hattenschwiler, S., Bebi, P., Hagedorn, F., Handa, I.T., Korner, C., Rixen, C. (2011) Species-specific tree growth responses to 9years of CO 2 enrichment at the alpine treeline. Journal of Ecology, 99(2):383-394
  39. Hattenschwiler, S., Coq, S., Barantal, S., Handa, I.T. (2011) Leaf traits and decomposition in tropical rainforests: Revisiting some commonly held views and towards a new hypothesis. New Phytologist, 189(4):950-965
  40. Rouifed, S., Handa, I.T., David, J.-F., Hattenschwiler, S. (2010) The importance of biotic factors in predicting global change effects on decomposition of temperate forest leaf litter. Oecologia, 163(1):247-256
  41. de Oliveira, T., Hattenschwiler, S., Handa, I.T. (2010) Snail and millipede complementarity in decomposing Mediterranean forest leaf litter mixtures. Functional Ecology, 24(4):937-946
  42. David, J.-F., Handa, I.T. (2010) The ecology of saprophagous macroarthropods (millipedes, woodlice) in the context of global change. Biological Reviews, 85(4):881-895
  43. Hagedorn, F., van Hees, P.A.W., Handa, I.T., Hattenschwiler, S. (2008) Elevated atmospheric CO2 fuels leaching of old dissolved organic matter at the alpine treeline. Global Biogeochemical Cycles, 22(2)
  44. Handa, I.T., Hagedorn, F., Hattenschwiler, S. (2008) No stimulation in root production in response to 4 years of in situ CO 2 enrichment at the Swiss treeline. Functional Ecology, 22(2):348-358
  45. Handa, I.T., Korner, C., Hattenschwiler, S. (2006) Conifer stem growth at the altitudinal treeline in response to four years of CO2 enrichment. Global Change Biology, 12(12):2417-2430
  46. Handa, I.T., Korner, C., Hattenschwiler, S. (2005) A test of the treeline carbon limitation hypothesis by in situ CO 2 enrichment and defoliation. Ecology, 86(5):1288-1300
  47. Hattenschwiler, S., Handa, I.T., Egli, L., Asshoff, R., Ammann, W., Korner, C. (2002) Atmospheric CO2 enrichment of alpine treeline conifers. New Phytologist, 156(3):363-375
  48. Handa, I.T., Harmsen, R., Jefferies, R.L. (2002) Patterns of vegetation change and the recovery potential of degraded areas in a coastal marsh system of the hudson bay lowlands. Journal of Ecology, 90(1):86-99
  49. Handa, I.T., Jefferies, R.L. (2000) Assisted revegetation trials in degraded salt-marshes. Journal of Applied Ecology, 37(6):944-958

Articles published in proceedings

Scientific reports, manuals and others

  1. Handa, I.T. (2011) Rapport au MDDEP pour signaler la présence d’une espèce menacée floristique au Québec. Technical report, Ministère du développement durable, de l'environnement et des parcs, Québec

Theses, dissertations and essays

  1. Handa, I.T. (2008) Tree and ecosystem responses to four years of in situ CO2 enrichment at the Swiss treeline. PhD thesis, University of Basel
  2. Handa, I.T. (1998) Revegetation trials in degraded coastal marshes of the Hudson Bay lowlands. Master's thesis, University of Toronto

Supervised theses, dissertations and essays

  1. Roberge, G. (2023) Le nerprun bourdaine (Frangula alnus Miller) : des impacts modérés sur la diversité floristique indigène et des macro-arthropodes saprophages. Master's thesis, Université du Québec à Montréal
  2. Meyer, J. (2022) Absence d'un effet du roseau commun sur l'activité des chauves-souris insectivores, malgré son effet négatif sur l'abondance de leurs proies. Master's thesis, Université du Québec à Montréal
  3. Rousseau, L. (2018) Réponses des communautés de mésofaune du sol forestier à la récolte intensive de la biomasse ligneuse dans des peuplements de pin gris du nord-est de l'Ontario. PhD thesis, UQAM
  4. Ramirez, J. (2017) The functional role of carbohydrate reserves in the growth and survival of trees. PhD thesis, Université du Québec à Montréal
  5. Raymond-Léonard, L.J. (2017) La diversité fonctionnelle à plusieurs niveaux trophiques : l'influence des espèces d'arbres exotiques sur les collemboles de la litière. Master's thesis, UQAM
  6. Potvin, E. (2017) Le processus d'opérationnalisation du concept de service écologique : le cas du Québec. Master's thesis, UQAM
  7. Brousseau, P.-M. (2016) Structure et diversité fonctionnelle des communautés d'arthropodes de la litière forestière. PhD thesis, UQAM
  8. Carpentier, S. (2015) Services écologiques et aménagement forestier-vers une nouvelle approche en forêt privée du sud du Québec. Master's thesis, Université du Québec à Montréal
  9. Archambault, C. (2015) Effet de la diversité spécifique et fonctionnelle des arbres sur la densité et profondeur d'enracinement. Master's thesis, UQAM
  10. Beausejour, R. (2014) Influence des perturbations anthropiques historique sur les patrons d'invasion de plantes et de vers de terre non-indigènes dans une forêt primaire tempérée (Réserve naturelle Gault, Mont St-Hilaire). Master's thesis, Université de Sherbrooke
  11. Guerrero, N. (2013) Influences of tropical tree diversity on tree root decomposition. Master's thesis, UQAM
  12. de Oliveira, T. (2008) Interactions entre deux espèces de la macrofaune saprophage dans la décomposition des litières en forêt méditerranéenne. Master's thesis, Université de Montpellier 2
  13. Rouifed, S. (2007) Effets des changements atmosphériques sur la qualité des litières forestières et conséquences pour la macrofaune saprophage. Master's thesis, Université de Montpellier 2
  14. Jackson, B. (2007) The interactive role of leaf litter and detritivore diversity in Mediterranean forest decomposition dynamics. Master's thesis, Université de Montpellier 2

Non peer-reviewed articles

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