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8 results on '"Haavik, L. J."'

1. Low growth resilience to drought is related to future mortality risk in trees

Author

European Commission, Fundação para a Ciência e a Tecnologia (Portugal), Ministry of Agriculture, Nature and Food Quality (The Netherlands), Ministerio de Ciencia y Tecnología (España), Slovenian Research Agency, US Forest Service, Academy of Finland, Ministerio de Economía y Competitividad (España), Ministry of Education, Science and Technological Development (Serbia), DeSoto, Lucía [0000-0002-5814-5865], Cailleret, Maxime [0000-0001-6561-1943], Sterck, Frank [0000-0001-7559-6572], Jansen, S. [0000-0002-4476-5334], Kramer, K. [0000-0002-1402-2775], Robert, E. M. R. [0000-0002-3611-7265], Aakala, T. [0000-0003-0160-6410], Amoroso, Mariano [0000-0002-2026-456X], Bigler, C. [0000-0003-3757-6356], Camarero, Jesús Julio [0000-0003-2436-2922], Cufar, Katarina [0000-0002-7403-3994], Gea Izquierdo, Guillermo [0000-0003-0148-3721], Gillner, S. [0000-0002-6975-3030], Haavik, L. J. [0000-0002-7749-9095], Hereş, Ana-María [0000-0002-1839-1770], Kane, J. M. [0000-0003-1453-9608], Kharuk, V. I. [0000-0003-4736-0655], Kitzberger, T. [0000-0002-9754-4121], Klein, T. [0000-0002-3882-8845], Levanic, T. [0000-0002-0986-8311], Linares, Juan Carlos [0000-0001-8375-6353], Mäkinen, H. [0000-0002-1820-6264], Oberhuber, W. [0000-0002-5197-7044], Papadopoulos, A. [0000-0001-8138-5536], Rohner, B. [0000-0003-3768-092X], Sangüesa-Barreda, G. [0000-0002-7722-2424], Stojanovic, Dejan [0000-0003-2967-2049], Suárez, Maria Laura [0000-0002-2737-6409], Villalba, Ricardo [0000-0001-8183-0310], Martínez-Vilalta, Jordi [0000-0002-2332-7298], DeSoto, Lucía, Cailleret, Maxime, Sterck, Frank, Jansen, S., Kramer, K., Robert, E. M. R., Aakala, T., Amoroso, Mariano, Bigler, C., Camarero, Jesús Julio, Cufar, Katarina, Gea Izquierdo, Guillermo, Gillner, S., Haavik, L. J., Hereş, Ana-María, Kane, J. M., Kharuk, V. I., Kitzberger, Thomas, Klein, T., Levanic, T., Linares, Juan Carlos, Mäkinen, H., Oberhuber, W., Papadopoulos, A., Rohner, B., Sangüesa-Barreda, G., Stojanovic, Dejan, Suárez, Maria Laura, Villalba, Ricardo, Martínez-Vilalta, Jordi, European Commission, Fundação para a Ciência e a Tecnologia (Portugal), Ministry of Agriculture, Nature and Food Quality (The Netherlands), Ministerio de Ciencia y Tecnología (España), Slovenian Research Agency, US Forest Service, Academy of Finland, Ministerio de Economía y Competitividad (España), Ministry of Education, Science and Technological Development (Serbia), DeSoto, Lucía [0000-0002-5814-5865], Cailleret, Maxime [0000-0001-6561-1943], Sterck, Frank [0000-0001-7559-6572], Jansen, S. [0000-0002-4476-5334], Kramer, K. [0000-0002-1402-2775], Robert, E. M. R. [0000-0002-3611-7265], Aakala, T. [0000-0003-0160-6410], Amoroso, Mariano [0000-0002-2026-456X], Bigler, C. [0000-0003-3757-6356], Camarero, Jesús Julio [0000-0003-2436-2922], Cufar, Katarina [0000-0002-7403-3994], Gea Izquierdo, Guillermo [0000-0003-0148-3721], Gillner, S. [0000-0002-6975-3030], Haavik, L. J. [0000-0002-7749-9095], Hereş, Ana-María [0000-0002-1839-1770], Kane, J. M. [0000-0003-1453-9608], Kharuk, V. I. [0000-0003-4736-0655], Kitzberger, T. [0000-0002-9754-4121], Klein, T. [0000-0002-3882-8845], Levanic, T. [0000-0002-0986-8311], Linares, Juan Carlos [0000-0001-8375-6353], Mäkinen, H. [0000-0002-1820-6264], Oberhuber, W. [0000-0002-5197-7044], Papadopoulos, A. [0000-0001-8138-5536], Rohner, B. [0000-0003-3768-092X], Sangüesa-Barreda, G. [0000-0002-7722-2424], Stojanovic, Dejan [0000-0003-2967-2049], Suárez, Maria Laura [0000-0002-2737-6409], Villalba, Ricardo [0000-0001-8183-0310], Martínez-Vilalta, Jordi [0000-0002-2332-7298], DeSoto, Lucía, Cailleret, Maxime, Sterck, Frank, Jansen, S., Kramer, K., Robert, E. M. R., Aakala, T., Amoroso, Mariano, Bigler, C., Camarero, Jesús Julio, Cufar, Katarina, Gea Izquierdo, Guillermo, Gillner, S., Haavik, L. J., Hereş, Ana-María, Kane, J. M., Kharuk, V. I., Kitzberger, Thomas, Klein, T., Levanic, T., Linares, Juan Carlos, Mäkinen, H., Oberhuber, W., Papadopoulos, A., Rohner, B., Sangüesa-Barreda, G., Stojanovic, Dejan, Suárez, Maria Laura, Villalba, Ricardo, and Martínez-Vilalta, Jordi

Abstract

Severe droughts have the potential to reduce forest productivity and trigger tree mortality. Most trees face several drought events during their life and therefore resilience to dry conditions may be crucial to long-term survival. We assessed how growth resilience to severe droughts, including its components resistance and recovery, is related to the ability to survive future droughts by using a tree-ring database of surviving and now-dead trees from 118 sites (22 species, >3,500 trees). We found that, across the variety of regions and species sampled, trees that died during water shortages were less resilient to previous non-lethal droughts, relative to coexisting surviving trees of the same species. In angiosperms, drought-related mortality risk is associated with lower resistance (low capacity to reduce impact of the initial drought), while it is related to reduced recovery (low capacity to attain pre-drought growth rates) in gymnosperms. The different resilience strategies in these two taxonomic groups open new avenues to improve our understanding and prediction of drought-induced mortality.

Published
2020

3. A synthesis of radial growth patterns preceding tree mortality

Author

Cailleret, M., Jansen, S., Robert, E. M. R., Desoto, L., Aakala, T., Antos, J. A., Beikircher, B., Bigler, C., Bugmann, H., Caccianiga, M., Čada, V., Camarero, J. J., Cherubini, P., Cochard, H., Coyea, M. R., Čufar, K., Das, A. J., Davi, H., Delzon, S., Dorman, M., Gea Izquierdo, Guillermo, Gillner, S., Haavik, L. J., Hartmann, H., Hereş, A. M., Hultine, K. R., Janda, P., Kane, J. M., Kharuk, V. I., Kitzberger, T., Klein, T., Kramer, K., Lens, F., Levanic, T., Linares Calderon, J. C., Lloret, F., Lobo-Do-Vale, R., Lombardi, F., López Rodríguez, R., Mäkinen, H., Mayr, S., Mészáros, I., Metsaranta, J. M., Minunno, F., Oberhuber, W., Papadopoulos, A., Peltoniemi, M., Petritan, A. M., Rohner, B., Sangüesa-Barreda, G., Sarris, D., Smith, J. M., Stan, A. B., Sterck, F., Stojanović, D. B., Suarez, M. L., Svoboda, M., Tognetti, R., Torres-Ruiz, J. M., Trotsiuk, V., Villalba, R., Vodde, F., Westwood, A. R., Wyckoff, P. H., Zafirov, N., Martínez-Vilalta, J., Cailleret, M., Jansen, S., Robert, E. M. R., Desoto, L., Aakala, T., Antos, J. A., Beikircher, B., Bigler, C., Bugmann, H., Caccianiga, M., Čada, V., Camarero, J. J., Cherubini, P., Cochard, H., Coyea, M. R., Čufar, K., Das, A. J., Davi, H., Delzon, S., Dorman, M., Gea Izquierdo, Guillermo, Gillner, S., Haavik, L. J., Hartmann, H., Hereş, A. M., Hultine, K. R., Janda, P., Kane, J. M., Kharuk, V. I., Kitzberger, T., Klein, T., Kramer, K., Lens, F., Levanic, T., Linares Calderon, J. C., Lloret, F., Lobo-Do-Vale, R., Lombardi, F., López Rodríguez, R., Mäkinen, H., Mayr, S., Mészáros, I., Metsaranta, J. M., Minunno, F., Oberhuber, W., Papadopoulos, A., Peltoniemi, M., Petritan, A. M., Rohner, B., Sangüesa-Barreda, G., Sarris, D., Smith, J. M., Stan, A. B., Sterck, F., Stojanović, D. B., Suarez, M. L., Svoboda, M., Tognetti, R., Torres-Ruiz, J. M., Trotsiuk, V., Villalba, R., Vodde, F., Westwood, A. R., Wyckoff, P. H., Zafirov, N., and Martínez-Vilalta, J.

Abstract

Tree mortality is a key factor influencing forest functions and dynamics, but our understanding of the mechanisms leading to mortality and the associated changes in tree growth rates are still limited. We compiled a new pan-continental tree-ring width database from sites where both dead and living trees were sampled (2970 dead and 4224 living trees from 190 sites, including 36 species), and compared early and recent growth rates between trees that died and those that survived a given mortality event. We observed a decrease in radial growth before death in ca. 84% of the mortality events. The extent and duration of these reductions were highly variable (1-100 years in 96% of events) due to the complex interactions among study species and the source(s) of mortality. Strong and long-lasting declines were found for gymnosperms, shade- and drought-tolerant species, and trees that died from competition. Angiosperms and trees that died due to biotic attacks (especially bark-beetles) typically showed relatively small and short-term growth reductions. Our analysis did not highlight any universal trade-off between early growth and tree longevity within a species, although this result may also reflect high variability in sampling design among sites. The intersite and interspecific variability in growth patterns before mortality provides valuable information on the nature of the mortality process, which is consistent with our understanding of the physiological mechanisms leading to mortality. Abrupt changes in growth immediately before death can be associated with generalized hydraulic failure and/or bark-beetle attack, while long-term decrease in growth may be associated with a gradual decline in hydraulic performance coupled with depletion in carbon reserves. Our results imply that growth-based mortality algorithms may be a powerful tool for predicting gymnosperm mortality induced by chronic stress, but not necessarily so for angiosperms and in case of intense drought or bark

Published
2017

4. A synthesis of radial growth patterns preceding tree mortality

Author

Ministerio de Economía y Competitividad (España), Cailleret, Maxime, Jansen, S., Robert, E. M. R., DeSoto, Lucía, Aakala, T., Antos, J. A., Beikircher, B., Bigler, C., Bugmann, H., Caccianiga, Marco, Cada, V., Camarero, Jesús Julio, Cherubini, Paolo, Cochard, H., Coyea, M. R., Cufar, Katarina, Das, Adrian J., Davi, H., Delzon, S., Dorman, M., Gea Izquierdo, Guillermo, Gillner, S., Haavik, L. J., Hartmann, H., Hereş, Ana-María, Hultine, K. R., Janda, P., Kane, J. M., Kharuk, V. I., Kitzberger, Thomas, Klein, T., Kramer, K., Lens, F., Levanic, T., Linares, Juan Carlos, Lloret, Francisco, Lobo-Do-Vale, R., Lombardi, Fabio, López Rodríguez, R., Mäkinen, H., Mayr, S., Mészáros, Itzván, Metsaranta, J. M., Minunno, F., Oberhuber, W., Papadopoulos, A., Peltoniemi, M., Petritan, A.M., Rohner, B., Sangüesa-Barreda, G., Martínez-Vilalta, Jordi, Ministerio de Economía y Competitividad (España), Cailleret, Maxime, Jansen, S., Robert, E. M. R., DeSoto, Lucía, Aakala, T., Antos, J. A., Beikircher, B., Bigler, C., Bugmann, H., Caccianiga, Marco, Cada, V., Camarero, Jesús Julio, Cherubini, Paolo, Cochard, H., Coyea, M. R., Cufar, Katarina, Das, Adrian J., Davi, H., Delzon, S., Dorman, M., Gea Izquierdo, Guillermo, Gillner, S., Haavik, L. J., Hartmann, H., Hereş, Ana-María, Hultine, K. R., Janda, P., Kane, J. M., Kharuk, V. I., Kitzberger, Thomas, Klein, T., Kramer, K., Lens, F., Levanic, T., Linares, Juan Carlos, Lloret, Francisco, Lobo-Do-Vale, R., Lombardi, Fabio, López Rodríguez, R., Mäkinen, H., Mayr, S., Mészáros, Itzván, Metsaranta, J. M., Minunno, F., Oberhuber, W., Papadopoulos, A., Peltoniemi, M., Petritan, A.M., Rohner, B., Sangüesa-Barreda, G., and Martínez-Vilalta, Jordi

Abstract

Tree mortality is a key factor influencing forest functions and dynamics, but our understanding of the mechanisms leading to mortality and the associated changes in tree growth rates are still limited. We compiled a new pan-continental tree-ring width database from sites where both dead and living trees were sampled (2970 dead and 4224 living trees from 190 sites, including 36 species), and compared early and recent growth rates between trees that died and those that survived a given mortality event. We observed a decrease in radial growth before death in ca. 84% of the mortality events. The extent and duration of these reductions were highly variable (1–100 years in 96% of events) due to the complex interactions among study species and the source(s) of mortality. Strong and long-lasting declines were found for gymnosperms, shade- and drought-tolerant species, and trees that died from competition. Angiosperms and trees that died due to biotic attacks (especially bark-beetles) typically showed relatively small and short-term growth reductions. Our analysis did not highlight any universal trade-off between early growth and tree longevity within a species, although this result may also reflect high variability in sampling design among sites. The intersite and interspecific variability in growth patterns before mortality provides valuable information on the nature of the mortality process, which is consistent with our understanding of the physiological mechanisms leading to mortality. Abrupt changes in growth immediately before death can be associated with generalized hydraulic failure and/or bark-beetle attack, while long-term decrease in growth may be associated with a gradual decline in hydraulic performance coupled with depletion in carbon reserves. Our results imply that growth-based mortality algorithms may be a powerful tool for predicting gymnosperm mortality induced by chronic stress, but not necessarily so for angiosperms and in case of intense drought or bark

Published
2017

8. Factors Affecting Suitability of Quercus rubra as Hosts for Enaphalodes rufulus (Coleoptera: Cerambycidae).

Author

Haavik, L. J., Fierke, M. K., and Stephen, F. M.

Subjects
BEETLES, CERAMBYCIDAE, RED oak, PLANT mortality, PHLOEM, BORERS (Insects), HOST plants
Abstract

Epidemic populations of Enaphalodes rufulus (Haldeman), red oak borer, a native longhorned wood boring beetle, were implicated as a major contributor to a recent widespread oak mortality event in the Ozark National Forest of Arkansas. We assessed potential factors affecting suitability of a primary host Quercus rubra L., northern red oak, which experienced dieback and mortality throughout two successive borer cohorts. We sampled trees with various E. rufulus infestation levels during 2001-2003 when populations were at outbreak levels and 2003-2005 when borer numbers were declining, We measured phloem thickness and calculated a vigor index; the ratio of the past 5-yr basal area increment to sapwood area. We also counted established first year larval feeding galleries and outer-bark adult emergence holes and measured surface area of feeding galleries on a subset of Q. rubra to assess the importance of host susceptibility versus suitability. Phloem thickness did not exhibit any patterns among hosts of varying infestation levels and was therefore not likely an important factor limiting larval success. Less vigorous Q. rubra appeared to be the most suitable hosts, although it is unclear whether reduced vigor was initially caused by stress of E. rufulus infestation or environmental factors. Host suitability seems to be more important than host susceptibility, as numbers of initiated galleries were not consistently different among host infestation classes and between both cohorts, whereas numbers of emerging adults did differ predictably among host infestation classes. [ABSTRACT FROM AUTHOR]

Published
2010
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