Wood anatomy, fire wounds and dendrochronological potential of Prosopis pugionata Burkart (Fabaceae) in arid Argentine Chaco
Prosopis pugionata (Fabaceae) is a halophyte tree species that grows exclusively in Argentina’s arid environments, whose woodlands are mainly affected by fires and overgrazing. Here, we describe the wood anatomy and fire wounds of P. pugionata and their relationship with plant size and bark thicknes...
| Autores principales: | , , , , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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International Association of Wood Anatomists
2022
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| Acceso en línea: | http://hdl.handle.net/20.500.12123/11481 https://brill.com/view/journals/iawa/42/2/article-p101_1.xml https://doi.org/10.1163/22941932-bja10056 |
| _version_ | 1855036580869177344 |
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| author | Bravo, Sandra Bogino, Stella Marys Leiva, Marta Lepiscopo, Martín Cendoya, María Alicia Kunst, Carlos Roberto Biurrun, Fernando Noe |
| author_browse | Biurrun, Fernando Noe Bogino, Stella Marys Bravo, Sandra Cendoya, María Alicia Kunst, Carlos Roberto Leiva, Marta Lepiscopo, Martín |
| author_facet | Bravo, Sandra Bogino, Stella Marys Leiva, Marta Lepiscopo, Martín Cendoya, María Alicia Kunst, Carlos Roberto Biurrun, Fernando Noe |
| author_sort | Bravo, Sandra |
| collection | INTA Digital |
| description | Prosopis pugionata (Fabaceae) is a halophyte tree species that grows exclusively in Argentina’s arid environments, whose woodlands are mainly affected by fires and overgrazing. Here, we describe the wood anatomy and fire wounds of P. pugionata and their relationship with plant size and bark thickness. Besides, we attempt to determine the potential of P. pugionata for dendrochronological studies in order to date fire events throughout time. We tested the hypothesis that P. pugionataforms datable fire wounds, allowing its use for dendrochronological studies. The study area is located in the arid Argentine Chaco region. Seventeen individuals, varying from 15 to 65 years of age, were randomly sampled and bole disks were taken at 0.3, 1.3 and 2.3 m high. P. pugionatais a diffuse and semi-ring-porous hardwood species with growth rings delimited by marginal parenchyma bands. The bark is longitudinally fissured, with an average thickness of 0.19 cm, and a scarce increase with age. Seventy-seven percent of the samples showed fire wounds (n=46). We identified fire scars (70%) and marks (30%), and differentiated them by wood growth interruption in the former. Sixty-one percent of fire wounds affected less than 20% of the cambial perimeter and there were no significant effects of age, bole diameter, bole height and bark thickness on the cambial damage percentage. After cross-dating, P. pugionata showed a mean correlation value between series of 0.5, which represents an accurate potential for dendrochronological studies. Twenty wildfires were dated from 1943 to 2007 in the study area with a fire frequency of 0.40 fires/year and a mean fire interval of 2.5 years. Wildfires frequency increased from 1980 to 0.48 fires/year and a mean fire interval of 2 years. Our results indicate that P. pugionata has the potential to date fires, considering its potential for dendrochronological studies, its ability to survive recurrent fires and forms identifiable wound scars in the wood. |
| format | info:ar-repo/semantics/artículo |
| id | INTA11481 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | International Association of Wood Anatomists |
| publisherStr | International Association of Wood Anatomists |
| record_format | dspace |
| spelling | INTA114812022-03-23T15:31:52Z Wood anatomy, fire wounds and dendrochronological potential of Prosopis pugionata Burkart (Fabaceae) in arid Argentine Chaco Bravo, Sandra Bogino, Stella Marys Leiva, Marta Lepiscopo, Martín Cendoya, María Alicia Kunst, Carlos Roberto Biurrun, Fernando Noe Prosopis Anatomía de la Madera Incendios Dendrocronología Anillo de Crecimiento Wood Anatomy Fires Dendrochronology Growth Rings Prosopis pugionata Región Chaco Semiárido Prosopis pugionata (Fabaceae) is a halophyte tree species that grows exclusively in Argentina’s arid environments, whose woodlands are mainly affected by fires and overgrazing. Here, we describe the wood anatomy and fire wounds of P. pugionata and their relationship with plant size and bark thickness. Besides, we attempt to determine the potential of P. pugionata for dendrochronological studies in order to date fire events throughout time. We tested the hypothesis that P. pugionataforms datable fire wounds, allowing its use for dendrochronological studies. The study area is located in the arid Argentine Chaco region. Seventeen individuals, varying from 15 to 65 years of age, were randomly sampled and bole disks were taken at 0.3, 1.3 and 2.3 m high. P. pugionatais a diffuse and semi-ring-porous hardwood species with growth rings delimited by marginal parenchyma bands. The bark is longitudinally fissured, with an average thickness of 0.19 cm, and a scarce increase with age. Seventy-seven percent of the samples showed fire wounds (n=46). We identified fire scars (70%) and marks (30%), and differentiated them by wood growth interruption in the former. Sixty-one percent of fire wounds affected less than 20% of the cambial perimeter and there were no significant effects of age, bole diameter, bole height and bark thickness on the cambial damage percentage. After cross-dating, P. pugionata showed a mean correlation value between series of 0.5, which represents an accurate potential for dendrochronological studies. Twenty wildfires were dated from 1943 to 2007 in the study area with a fire frequency of 0.40 fires/year and a mean fire interval of 2.5 years. Wildfires frequency increased from 1980 to 0.48 fires/year and a mean fire interval of 2 years. Our results indicate that P. pugionata has the potential to date fires, considering its potential for dendrochronological studies, its ability to survive recurrent fires and forms identifiable wound scars in the wood. EEA San Luis Fil: Bravo, Sandra. Universidad Nacional de Santiago del Estero. Facultad de Ciencias Forestales; Argentina Fil: Bogino, Stella Marys. Universidad Nacional de San Luis. Facultad de Ingeniería y Ciencias Agropecuarias; Argentina Fil: Leiva, Marta. Universidad Nacional de Santiago del Estero. Facultad de Ciencias Forestales; Argentina Fil: Lepiscopo, Martín. Universidad Nacional de Santiago del Estero. Facultad de Ciencias Forestales; Argentina Fil: Cendoya, María Alicia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria San Luis; Argentina Fil: Kunst, Carlos Roberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina Fil: Biurrun, Fernando Noe. Universidad Nacional de La Rioja; Argentina 2022-03-23T15:28:58Z 2022-03-23T15:28:58Z 2021-02 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/11481 https://brill.com/view/journals/iawa/42/2/article-p101_1.xml 2294-1932 0928-1541 https://doi.org/10.1163/22941932-bja10056 eng info:eu-repo/semantics/restrictedAccess application/pdf International Association of Wood Anatomists IAWA Journal 42 (2) : 1-10 (February 2021) |
| spellingShingle | Prosopis Anatomía de la Madera Incendios Dendrocronología Anillo de Crecimiento Wood Anatomy Fires Dendrochronology Growth Rings Prosopis pugionata Región Chaco Semiárido Bravo, Sandra Bogino, Stella Marys Leiva, Marta Lepiscopo, Martín Cendoya, María Alicia Kunst, Carlos Roberto Biurrun, Fernando Noe Wood anatomy, fire wounds and dendrochronological potential of Prosopis pugionata Burkart (Fabaceae) in arid Argentine Chaco |
| title | Wood anatomy, fire wounds and dendrochronological potential of Prosopis pugionata Burkart (Fabaceae) in arid Argentine Chaco |
| title_full | Wood anatomy, fire wounds and dendrochronological potential of Prosopis pugionata Burkart (Fabaceae) in arid Argentine Chaco |
| title_fullStr | Wood anatomy, fire wounds and dendrochronological potential of Prosopis pugionata Burkart (Fabaceae) in arid Argentine Chaco |
| title_full_unstemmed | Wood anatomy, fire wounds and dendrochronological potential of Prosopis pugionata Burkart (Fabaceae) in arid Argentine Chaco |
| title_short | Wood anatomy, fire wounds and dendrochronological potential of Prosopis pugionata Burkart (Fabaceae) in arid Argentine Chaco |
| title_sort | wood anatomy fire wounds and dendrochronological potential of prosopis pugionata burkart fabaceae in arid argentine chaco |
| topic | Prosopis Anatomía de la Madera Incendios Dendrocronología Anillo de Crecimiento Wood Anatomy Fires Dendrochronology Growth Rings Prosopis pugionata Región Chaco Semiárido |
| url | http://hdl.handle.net/20.500.12123/11481 https://brill.com/view/journals/iawa/42/2/article-p101_1.xml https://doi.org/10.1163/22941932-bja10056 |
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