My investigation is oriented to the study of ecosystems of the south of Chile by means of the use of the dendrocronología to approach subjects such as the glacier variations during the Holoceno, Global Change and the dynamics of native forests. The geographic area of my interest is the austral zone of the country in which I have developed and I look for to develop to new dendroclimáticas reconstructions with species such as Nothofagus pumilio (lenga), N. betuloides (coigüe of Magallanes) and Pilgerodendron uviferum (cypress of the Guaytecas). Also it interests to me to extend the studies of the variations of glaciers of the region by means of the reconstruction of these variations being used ring of trees, lichens and sediments deposited in periglaciales atmospheres. Finally it interests the application of the ring of arboreal growth to the ecological and paleoecológicos process analysis of the forest ecosystems. Therefore I am pawned on expanding the number of chronologies of ring of trees of the austral region of as much space Chile as temporarily.

Projects in Course

Investigador Responsable Fondecyt 1080320 “Late-Holocene glacier fluctuations in the Andes of southern Chile: multi-criteria dating approach integrating high-resolution dendroglaciologic methods with lichenometry, tephrochronology and stratigraphic analysis”. 2008-2011.

Co-Investigador IAI-CRN II-047: “Documenting, understanding and projecting changes in the hydrological cycle in the American Cordillera”. Coordinador: Dr. Brian H. Luckman University of Western Ontario. 2006-2010.

Co-Investigador Fondecyt # 1090135 “Development of nutrient limitation in primary successions: Integrating temporal scales.” (2009-2012, US$ 290,000).Iinvestigador Responsable: Dr. C. Pérez.

Colaborador Fondecyt project # 1090479 “Climate and streamflow variability in the sub-antarctic region of South America (45° - 56° s) during the last 500 years: integrating tree-rings, instrumental records and hydro-climatic modeling.” (2009-2012) Investigador Responsable: Dr. A. Lara, Universidad Austral de Chile.

Director proyecto Innova CORFO # 08-20 “Caracterización territorial del Parque Nacional Bernardo O’Higgins: su potencial económico, turístico, científico y cultural.” (2009-2010).

Presentaciones a Congreso (últimos 6 años, sólo primer autor)

1. Aravena JC. Center of Quaternary Studies of the Fuego Patagonia and Antarctica (CEQUA): a multidisciplinary approach to the past and present environmental changes in southern South America. Fourth Annual Science Meeting, IAI CRN 03, Mendoza, Argentina. October 10-16, 2003.

2. Aravena J.C. and B.H. Luckman Glacier inventory, mass balance and geomorphology at Mount San Lorenzo, southern Patagonia- some preliminary results. Second Symposium on Andean Glaciers. Huaraz, Peru 6-9, July 2004.

3. Aravena J.C. Climate variability reconstructed using tree-ring records and glacier fluctuations in the southern Chilean Andes. Internacional Symposium “Nuevos enfoques de las ciencias del Cuaternario en Fuego-Patagonia.” Puerto Natales, Chile. April 4 -9, 2005.

4. Aravena J.C. and B.H. Luckman Experimental Densitometric Analysis of tree rings of Pilgerodendron uviferum from southernmost Chile (53˚ S). Annual Meeting Canadian Association of Geography. London-Ontario, Canada. May 31 to June 4, 2005.

5. Aravena JC and Luckman BH. Dendroclimatology of Pilgerodendron uviferum forests in its southernmost range of geographical distribution. First Science Meeting IAI-CRNII 047: Documenting, Understanding and Projecting changes in the hydrological cycle in the American Cordillera. Mendoza, Argentina April 2-3, 2006.

6. Aravena JC and Luckman BH. Precipitation variability in the Western coast of southernmost South America as reconstructed from Pilgerodendron uviferum tree rings. London-Ontario, Canada. Environmental Research Workshop June 2006.

7. Aravena JC and Luckman BH Past rainfall variability reconstructed from Pilgerodendron uviferum tree-ring records in southernmost South America. International Symposium. Reconstructing past regional climate variations in South America over the late Holocene: a new PAGES initiative. Malargue, Mendoza, Argentina. October 4-7, 2006.

8. Aravena JC and Luckman BH. Glacier fluctuations during the last 400 years at Mount San Lorenzo and Santa Ines Island, southern Chile. Programme with Abstracts ERW Earth Day Colloquium, University of Western Ontario, April 20, 2007.

9. Aravena JC and Luckman B.H. Little Ice Age glacial fluctuations at Mount San Lorenzo and Santa Ines Island, southern Chile. GEOSUR 2007. International Symposium on the Geology and Geophysics of the Southern Hemisphere.Santiago, Chile. November 18 – 20, 2007.

10. Aravena JC and Luckman B.H. Glacier fluctuations during the last 400 years at Mount San Lorenzo and Santa Ines Island, southern Chile. AGU Fall Meeting. San Francisco USA. 10-14 December 2007.

11. Aravena JC Multi-criteria dating approach to study Late-Holocene glacier fluctuations in the Andes of southern Chile. Second Science Meeting CRN2-047. San Carlos, Argentina. March 30- April 3, 2008.

12. Aravena, J.C. Current research at the Center of Quaternary Studies (CEQUA). Chile-Canada collaborative research initiative in glaciology and climate change. Ottawa, Canada. September 25-26, 2008.

13. Aravena, J.C., B.H. Luckman, E. Sagredo, R.Villa. Fluctuaciones glaciales Holocénicas en el Monte San Lorenzo, Aysén Chile XVI Reunión Anual de la Sociedad de Ecología de Chile. Valdivia 8-10 de Octubre 2009.

Publications Magazines ISI (last 7 years)

1. Aravena, JC, A. Lara, A. Wolodarsky, R. Villalba and E. Cuq (2002). Tree-ring growth patterns and temperature reconstruction from Nothofagus pumilio (Fagaceae) forests at the upper tree line of Southern Chilean Patagonia. Revista Chilena de Historia Natural 75: 361-376.

2. Aravena, J.C., M. Carmona, C. Pérez y J.J. Armesto (2002). Changes in tree species richness, stand structure and soil properties in a successional chronosequence of forest fragments in northern Chiloé Island, Chile. Revista Chilena de Historia Natural 75: 339-360.

3. M. Carmona, J. C. Aravena, C. Pérez and J.J. Armesto (2002). Coarse woody debris biomass in successional and primary temperate forests in Chiloé Island, Chile. Forest Ecology and Management 164: 265-275.

4. Battles, J.J., J.J. Armesto, D.R. Vann, D.J. Zarin, J.C. Aravena, C. Pérez, and A.H. Johnson. (2002). Vegetation composition, structure, and biomass of two unpolluted watersheds in the Cordillera de Piuchué, Chiloé Island, Chile. Plant Ecology 158:5-19.

5. Villalba R., A. Lara, J.Boninsegna, M. Masiokas, S. Delgado, J.C. Aravena, F. Roig, A. Schmelter, A. Wolodarsky and A. Ripalta (2003). Large-scale temperature changes across the southern Andes: 20th century variations in the context of the past 400 years. Climatic Change 59: 177-232.

6. Gutiérrez A.G., J.J. Armesto and J.C. Aravena. (2004) Disturbance dynamics of a lowland temperate rainforest in Chiloé Island, Chile. Journal of Ecology 92: 598-608

7. Perez C., Carmona M., Aravena J.C., and Armesto J.J. (2004) Successional changes in soil nitrogen availability, non-symbiotic nitrogen fixation and carbon/nitrogen ratios in southern Chilean forest ecosystems. Oecologia 140: 617-625.

8. Lara, A., Villalba, R., Wolodarsky-Franke A., Aravena J.C., Luckman B.H. and Cuq, E (2005). Spatial and temporal variation in Nothofagus pumilio growth at treeline along its entire latitudinal gradient in the Chilean Andes. Journal of Biogeography 32:879-893.

9. Lara A., Urrutia, R., Villalba, R., Luckman, B. H. Soto, D. Aravena, J.C. McPhee, J.,Wolodarsky, A., Pezoa,L. and León, J. (2005). The Potential of tree-rings for streamflow and estuary salinity reconstruction in the Valdivian Rainforest Eco-region, Chile. Dendrochronologia 22: 155-161.

10. Lequesne C., D.W. Stahle, M.K. Cleaveland, M.D. Therrel, J.C. Aravena and J. Barichivich (2006) Ancient Cipres Tree-Ring Chronologies used to reconstruct Central Chile precipitation variability from A.D. 1200-2000. Journal of Climate 19: 5732-5744.

11. Masiokas M.,Villalba R., Luckman BH, Le Quesne C., Aravena JC. (2006)Snowpack variations in the central Andes of Argentina and Chile, 1951-2005: Large-scale atmospheric influences and implications for water resources in the region. Journal of Climate 19: 6334-6352.

12. Gutiérrez A.G., Aravena, J.C., Carrasco, N.V., Christie, D.A., Fuentes, M & Armesto, J.J. (2008) Gap-phase dynamics and coexistence of a long-lived pioneer and shade-tolerant tree species in the canopy of an old-growth Coastal Temperate rain forest of Chiloé Island, Chile. Journal of Biogeography. doi: 10.1111/j.1365-2699.2008.01908.x

13. Pérez C., M. Carmona, J C Aravena, J M Fariña and J. J. Armesto. Radial activity of three evergreen tree species in montane temperate forests in Chiloé Island, southern Chile. Austral Ecology. 34, 259-271.

14. Aravena JC and Luckman BH Spatio-temporal rainfall patterns in southern South America. International Journal of Climatology. DOI: 10.1002/joc.1761

Book chapters (last 6 years)

1. Aravena, J.C., C. Le Quesne, H.Jiménez, A. Lara & J.J. Armesto (2003). Fire History in Central Chile: Tree Ring and Modern Records In : Fire and global change in temperate ecosystems of the western Americas. T.T. Veblen, W.L. Baker, G. Montenegro and T.W. Swetnam (Editors) Ecological Studies, Vol. 160 Springer Verlag: 343-356.

2. Lara, A., A. Wolodarsky-Franke, J.C. Aravena, M. Cortés, S. Fraver and F. Silla.(2003) Fire regimes and forest dynamics in the Lake Region of south-central Chile. In : Fire and global change in temperate ecosystems of the western Americas. T.T. Veblen, W.L. Baker, G. Montenegro and T.W. Swetnam (Eds.) Ecological Studies, Vol. 160 Springer Verlag: 322-342.

3. Lara, A., Wolodarsky-Franke, A., Aravena, J.C., Villalba, R., Solari, M.E., Pezoa L., Rivera, A. and Le Quesne, C. (2005). Climate fluctuations from tree-rings and other proxy-records in the Chilean Andes. In: Huber, U.M., Bugmann H.K.M., Reasoner M.A. (eds). Global Change and Mountain Regions – an overview of current knowledge: 145-156.

4. Rovere, A.E., A.C. Premoli, J.C. Aravena and A. Lara (2004). Variación en Pilgerodendron uviferum (Cipres de las Guaytecas) In: Variación Intraespecifica en las especies arbóreas de los bosques templados de Chile y Argentina. C. Donoso, A. Premoli, L. Gallo and R. Ipinza (eds.) Editorial Universitaria, Santiago, Chile: 253-275.

5. Villalba, R., Luckman, B.H., Boninsegna, J., D'Arrigo, R.D., Lara, A., Villanueva-Diaz,J., Masiokas, M., Argollo, J., Soliz, C., LeQuesne, C., Stahle, D., Roig, F., Aravena, J.C., Wiles, G., Jacoby, G. , Hartsough, P., Wilson, R.J.S., Watson, E., Cook, E.R.,Cerano-Paredes, J., Therrell, M., Cleaveland, M., Morales, M.J. , Moya, J., Pacajes,J., Massacchesi, G., Biondi, F., Urrutia, R. , and Martinez Pastur, G. (2006). Dendroclimatology from regional to continental scales: Understanding regional processes to reconstruct large-scale climatic variations across the Western Americas

Supervised Theses

Claudia Andrea Mansilla Andrade 2008 Reclutamiento post disturbio de Pilgerodendron uviferum en el Monte Tarn, Peninsula de Brunswick, Magallanes, Chile Magister en Biología. Universidad de Magallanes, Facultad de Ciencias, Departamento de Biología.

Carolina Alejandra Morano Buchner 2009 Análisis de la biodiversidad de líquenes y su potencial liquenométrico en el Monte San Lorenzo, región de Aysen, Chile. Licenciatura en Biología Universidad de Magallanes, Facultad de Ciencias, Departamento de Biología.

Nelson Bahamonde (en curso). Vegetación Asociada a Geoformas de la Última Glaciación en Magallanes. Licenciatura en Biología Universidad de Magallanes, Facultad de Ciencias, Departamento de Biología.

Rodrigo Pérez (en curso) Desarrollo de cronologías de anillos de Nothofagus betuloides en Magallanes. Licenciatura en Biología Universidad de Magallanes, Facultad de Ciencias, Departamento de Biología.

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