干旱区生态环境知识资源中心(Arid): Wood anatomy, fire wounds and dendrochronological potential of Prosopis pugionata Burkart (Fabaceae) in arid Argentine Chaco

Arid

DOI	10.1163/22941932-bja10056
	Wood anatomy, fire wounds and dendrochronological potential of Prosopis pugionata Burkart (Fabaceae) in arid Argentine Chaco
	Bravo, Sandra; Bogino, Stella; Leiva, Marta; Lepiscopo, Martin; Cendoya, Maria Alicia; Kunst, Carlos; Biurrun, Fernando
通讯作者	Bravo, S (corresponding author), Univ Nacl Santiago del Estero, Fac Ciencias Forestales, Santiago Del Estero, Argentina.
来源期刊	IAWA JOURNAL
ISSN	0928-1541
EISSN	2294-1932
出版年	2021
卷号	42 期号:2 页码:101-110
英文摘要	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.
英文关键词	Bark thickness dendrochronology fire scars Prosopis tree rings
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000647809600001
WOS关键词	REGION ; HISTORY
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/367806
作者单位	[Bravo, Sandra; Leiva, Marta; Lepiscopo, Martin] Univ Nacl Santiago del Estero, Fac Ciencias Forestales, Santiago Del Estero, Argentina; [Bogino, Stella] Univ Nacl San Luis, Fac Ingn & Ciencias Agr, San Luis, Argentina; [Cendoya, Maria Alicia] Inst Nacl Tecnol Agr, EAA San Luis, San Luis, Argentina; [Kunst, Carlos] Inst Nacl Tecnol Agr, San Luis, Argentina; [Biurrun, Fernando] Univ Nacl La Rioja, La Rioja, Argentina
推荐引用方式 GB/T 7714	Bravo, Sandra,Bogino, Stella,Leiva, Marta,et al. Wood anatomy, fire wounds and dendrochronological potential of Prosopis pugionata Burkart (Fabaceae) in arid Argentine Chaco[J],2021,42(2):101-110.
APA	Bravo, Sandra.,Bogino, Stella.,Leiva, Marta.,Lepiscopo, Martin.,Cendoya, Maria Alicia.,...&Biurrun, Fernando.(2021).Wood anatomy, fire wounds and dendrochronological potential of Prosopis pugionata Burkart (Fabaceae) in arid Argentine Chaco.IAWA JOURNAL,42(2),101-110.
MLA	Bravo, Sandra,et al."Wood anatomy, fire wounds and dendrochronological potential of Prosopis pugionata Burkart (Fabaceae) in arid Argentine Chaco".IAWA JOURNAL 42.2(2021):101-110.