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Verushka Valsecchi

Post-Doctorant(e) Equipe Paléoclimats
Emailverushka.valsecchi@univ-montp2.fr
Tél. +33 (0)4 67 14 33 76
Localisation Bâtiment 22, 3ème étage
Mots clés pollen charcoal hyrax middensv Quaternary southern Africa

I’m working as post-doc in the HYRAX project (PI: Brian Chase). Palaeoenvironmetal records for southern Africa are rare due to the lack of wetlands. Rock hyrax middens represent a new fossil archive in which, among others proxies, fossil pollen and microcharcoal are preserved. My role in the project is to focus on past vegetation dynamics and fire history by means of pollen and microcharcoal analysis. Hyrax middens are also an archive for carbon and nitrogen isotopes, which can be considered as a proxy for past environmental changes. The overall aim of the project is to reconstruct vegetation responses to climatic shifts and to elucidate the role of fire in the vegetation dynamics. This research will also increase the palaeoecological understanding of the fossil pollen in southern Africa.

Research interest

Palynology, plant macrofossils, fire history, Quaternary vegetation history, prehistoric human impact, quantifying past vegetation cover

Peer reviewed papers

  1. Valsecchi, V., Chase, B.M., Slingsby, J., Carr, A.S., Quick, L.J., Meadows, M., Cheddadi, R., Reimer, P.J., in press. A high resolution 15,600-year pollen and microcharcoal record from the Cederberg Mountains, South Africa. Palaeogeography,  Palaeoclimatology,  Palaeoecology
  2. Tinner, W., Colombaroli, D., Heiri, O., Henne, P., Steinacher, M., Untenecker, J., Vescovi, E., Allen, J., Carraro, G., Conedera, M., Joos, F., Lotter, A.F., Luterbacher, J.r., Samartin, S., Valsecchi, V., in press. The past ecology of Abies alba provides new perspectives on future responses of silver fir forests to global warming. Ecological Monographs.
  3. Jie, L., Zhuo, Z., Kangyou, H., Shixiong, Y., Chase, B., Valsecchi, V., Cheddadi, R., in press. Vegetation changes during the past 40,000 years in Central China from a long fossil record. Quaternary International
  4. Ali, A.A., Blarquez, O., Girardin, M.P., Hély, C., Tinquaut, F., El Guellab, A., Valsecchi, V., Terrier, A., Bremond, L., Genries, A., Gauthier, S., Bergeron, Y., 2012. Control of the multimillennial wildfire size in boreal North America by spring climatic conditions. Proceedings of the National Academy of Sciences, 109: 20966-20970.
  5. Chase, B.M., Scott, L., Meadows, M.E., Gil-Romera, G., Boom, A., Carr, A.S., Reimer, P.J., Truc, L., Valsecchi, V., Quick, L.J., 2012. Rock hyrax middens: A palaeoenvironmental archive for southern African drylands. Quaternary Science Reviews, 56: 107-125.
  6. Daniau, A.L., Bartlein, P.J., Harrison, S.P., Prentice, I.C., Brewer, S., Friedlingstein, P., Harrison-Prentice, T.I., Inoue, J., Izumi, K., Marlon, J.R., Mooney, S., Power, M.J., Stevenson, J., Tinner, W., Andri, M., Atanassova, J., Behling, H., Black, M., Blarquez, O., Brown, K.J., Carcaillet, C., Colhoun, E.A., Colombaroli, D., Davis, B.A.S., D’Costa, D., Dodson, J., Dupont, L., Eshetu, Z., Gavin, D.G., Genries, A., Haberle, S., Hallett, D.J., Hope, G., Horn, S.P., Kassa, T.G., Katamura, F., Kennedy, L.M., Kershaw, P., Krivonogov, S., Long, C., Magri, D., Marinova, E., McKenzie, G.M., Moreno, P.I., Moss, P., Neumann, F.H., Norström, E., Paitre, C., Rius, D., Roberts, N., Robinson, G.S., Sasaki, N., Scott, L., Takahara, H., Terwilliger, V., Thevenon, F., Turner, R., Valsecchi, V.G., Vannière, B., Walsh, M., Williams, N., Zhang, Y., 2012. Predictability of biomass burning in response to climate changes. Global Biogeochemical Cycles, 26: GB4007, doi:10.1029/2011GB004249.
  7. Valsecchi, V., Sanchez Goni, M.F., Londeix, L., 2012. Connection between Eastern Mediterranean climate variations and high-latitudinal climate forcing during the last 23,000 years: insight from a new pollen record (core MD01-2430) from the Sea of Marmara. Climate of the Past, 8: 1941-1956.
  8. Giesecke, T., Bennett, K.D., Birks, H.J.B., Bjune, A.E., Bozilova, E., Feurdean, A., Finsinger, W., Froyd, C., Pokorný, P., Rösch, M., Seppä, H., Tonkov, S., Valsecchi, V., Wolters, S., 2011. The pace of Holocene vegetation change – testing for synchronous developments. Quaternary Science Reviews, 30: 2805-2814.
  9. Vannière, B., Power, M.J., Roberts, N., Tinner, W., Carriòn, J.S., Magny, M., Bartlein, P.J., Colombaroli, D., Daniau, A.-L., Finsinger, W., Gil-Romera, G., Kaltenrieder, P., Pini, R., Sadori, L., Turner, R., Valsecchi, V., & Vescovi, E., 2011. Circum-Mediterranean fire activity and climate changes during the mid Holocene environmental transition (8500-2500 cal. BP). The Holocene, 21: 53-73.
  10. Finsinger, W., Colombaroli, D., de Beaulieu, J.-L., Valsecchi, V., Vannière, B., Vescovi, E., Chapron, E., Lotter, A. F., Magny, M. and Tinner, W., 2010. Early to mid-Holocene climate change at Lago dell’Accesa (central Italy): Climate signal or anthropogenic bias? Journal of Quaternary Science, 25: 1239-1247.
  11. Valsecchi V., Tinner W., 2010. Vegetation responses to climatic variability in the Swiss Southern Alps during the Misox event at the early-mid Holocene transition. Journal of Quaternary Science, 25: 1248-1258.
  12. Valsecchi, V., Carraro D., Conedera, M., Tinner, W., 2010. Late Holocene vegetation and land-use dynamics in the Southern Alps (Switzerland) as a basis for nature protection and forest management. The Holocene, 20:483-495.
  13. Wagner B., Lotter A.F., Nowaczyk N., Reed J. M., Scwalb A., Sulpizio R., Valsecchi V., Wessels M., Zanchetta G., 2009. A 40,000-year record of environmental change from ancient Lake Ohrid (Albania and Macedonia). Journal of Paleolimnology, 41: 407-430.
  14. Gaillard, M.-J., Sugita, S., Bunting, M.J., Middleton, R., Broström, A., Caseldine, C., Giesecke, T., Hellman, S., Hicks, S., Hjelle, K., Langdon, C., Nielsen, A.B., Poska, A., von Stedingk, H., Veski, S., POLLANDCAL members, 2008. The use of modelling and simulation approach in reconstructing past landscapes from fossil pollen data: A review and results from the POLLANDCAL network. Vegetation History and Archaeobotany, 17: 419-443.
  15. Valsecchi V., Finsinger W., Tinner W., Ammann B., 2008. Testing the influence of climate, human impact, and fire on the Holocene population expansion of Fagus sylvatica in the southern Prealps. The Holocene, 18: 603-614.
  16. Finsinger W., Heiri O., Valsecchi V., Lotter A.F., 2007. Modern pollen assemblages as climate indicators in Southern Europe. Global Ecology and Biogeography, 16: 567-582.
  17. Vescovi E., Ravazzi C., Arpenti E., Finsinger W., Pini R., Valsecchi V., Wick L., Ammann B., Tinner W., 2007. Interactions between climate and vegetation during the Lateglacial period as recorded by lake and mire sediment archives in Northern Italy and Southern Switzerland. Quaternary Science Reviews, 26: 1650–1669.
  18. Cremaschi M., Pizzi C., Valsecchi V., 2006. Water management and land use in the terramare and a possible climatic co-factor in their collapse. The case study of the Terramara of Poviglio Santa Rosa (Northern Italy). Quaternary International, 151: 87-98.
  19. Hofstetter S., Tinner W.,Valsecchi V., Carraro G., Conedera M., 2006. Lateglacial and Holocene vegetation history in the Insubrian Southern Alps – New indications from a small-scale site. Vegetation history and archaeobotany, 15:87-98.
  20. Valsecchi V., Tinner W., Finsinger W., Ammann B., 2006. Human impact on the vegetation during the Bronze Age at Lago Lucone (northern Italy). Vegetation history and archaeobotany, 15:99-113.
  21. Van der Knaap, W.O., van Leeuwen, J.F.N., Finsinger, W., Gobet, E., Pini, R., Schweizer, A., Valsecchi, V., Ammann, B., 2005. Migration and population expansion of Abies, Fagus, Picea, and Quercus since 15000 years in and across the Alps, based on pollen-percentage threshold values. Quaternary Science Reviews, 24: 645-680.

link to the Hyrax Project

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