Vessel features of Quercus ilex L. growing under Mediterranean climate have a better climatic signal than tree-ring width

Campelo, Filipe; Nabais, Cristina; Gutiérrez, Emília; Freitas, Helena; García‐González, Ignacio

doi:10.1007/s00468-010-0414-0

Cited by 100 publications

(69 citation statements)

References 45 publications

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“…Moreover, these values are consistent with what can be found for other tree species of the Mediterranean area (e.g. Campelo et al, 2007;Campelo et al, 2010;Cherubini et al, 2003;Garfì, 1997;Lebourgeois et al, 2012;Touchan et al, 2014).…”

Section: Complacence and Sensitivity Towards Climatesupporting

confidence: 91%

Imprisoned in the Cretan mountains: How relict Zelkova abelicea (Ulmaceae) trees cope with Mediterranean climate

Fazan

Guillet

Corona

et al. 2017

Science of The Total Environment

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• We established the first ever centennial chronology for a broadleaved tree on Crete.• Zelkova abelicea is most sensitive to precipitation and drought in May-June.• No growth change can be related to the increase in dry conditions of the past decades.• Z. abelicea has a high capacity to withstand changing environmental conditions.We investigate the sensitivity of the relict, endemic Cretan tree species Zelkova abelicea (Lam.) Boiss. (Ulmaceae) to several climate variables (temperature, precipitation and drought). For this purpose, we establish the first centennial tree-ring chronology for the species, and the first ever tree-ring chronology for a broadleaved species on Crete. We demonstrate the strong sensitivity of Z. abelicea towards precipitation and drought in late spring to early summer and the absence of a significant response to abundant precipitation occurring during winter or early spring. Whereas the late spring sensitivity is strong and consistent through time, the species seems to be experiencing a loss of signal towards early summer conditions since the 1970s, interpreted as an earlier cessation of cambial activity due to the increase in summer drought conditions on Crete. However, despite a reduced vegetative period, no significant decrease in radial growth of Z. abelicea was observed in the tree-ring series for the last decades, thus highlighting the capacity of Z. abelicea to withstand changing environmental conditions.

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Section: Complacence and Sensitivity Towards Climatesupporting

confidence: 91%

Imprisoned in the Cretan mountains: How relict Zelkova abelicea (Ulmaceae) trees cope with Mediterranean climate

Fazan

Guillet

Corona

et al. 2017

Science of The Total Environment

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“…In this study, the overall frequency distribution of vessel was left-skewed, as previously reported for Q. faginea (Villar-Salvador et al 1997, Corcuera et al 2004a, Alla & Camarero 2012, Q. robur and Q. ilex (García-González & Eckstein 2003, Campelo et al 2010, Corcuera et al 2004b). The vessel distribution seems age-related, and the …”

Section: Discussionsupporting

confidence: 77%

Earlywood vessel features in Quercus faginea: relationship between ring width and wood density at two sites in Portugal

Sousa¹,

Lousada²,

Pereira³

2015

iForest

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© iForest -Biogeosciences and Forestry IntroductionVessel size and distribution throughout a growth ring deeply affect tree physiology and wood utilization. Vessels are the main cell types of the vascular transport system of plants and their importance is higher when the species are under threat of, for example, drought. In fact, the conductive area of vessels seems related to the conductive efficiency and tracks intra-seasonal information (Carlquist 2001, Fonti et al. 2009. Wood characteristics such as texture (i.e., the wood appearance due to cell morphology and density) are affected by vessel characteristics, thereby the quality of wood products is also vessel related (Zobel & Van Buijtenen 1989, Stanzl-Tschegg 2011.The measurement of vessel features such as area and diameter used to be a very timeconsuming task. However, the current use of microscopy coupled with image analysis makes data acquisition and processing more efficient (Gasson 1985, Sass & Eckstein 1994, Fonti et al. 2002, Leal et al. 2007. Recently, the number of studies focusing on the variation of vessel features (e.g., with age, growth and site) and their relation to other wood characteristics (e.g., density) has increased, although data is still scanty and results are often species-specific. The main tendencies in studies on vessel diameter variation have been recently discussed by Anfodillo et al. (2013), with special attention to the relationship between axial conduit widening and tree height.Vessels are key contributors to wood density, that is inversely proportional to their size and number (Savidge 2003). In oaks, vessel proportion (i.e., the percentage of xylem cross-section occupied by vessels) is one of the major anatomical factors affecting latewood density (Rao et al. 1997) and specific gravity (Zhang & Zhong 1992). For instance, in Quercus suber vessel size and number were found to contribute significantly to mean ring wood density (Leal et al. 2011).Contrasting results have been reported so far regarding the variation of vessels with age and tree growth. In Quercus alba the percentage of earlywood vessel area was influenced by the radial position, but not by the ring width (Phelps & Workman 1994). Earlywood vessel area was larger in fastgrowing than in slow-growing Juglans nigra trees, but no correlation was found between the earlywood vessel area and ring width (Phelps & Workman 1994). Denne et al. (1999) reported that the total vessel proportion decreased significantly as the ring width increase in Nothofagus nervosa, a diffuse porous hardwood species. In Q. suber, the vessel size increased from pith outwards, explaining 32% of the total variation in wood ring density (Leal et al. 2007, Leal et al. 2011. In Q. rubra, vessel percentage was also found to be correlated with specific gravity, independently of soil types (Hamilton & Knauss 1986). As for ring porous species, it is generally accepted that latewood width is responsible for the variation in wood ring density, while earlywood width is relatively constant (Chauhan et al. ...

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“…(Figure 1). It is located in the northern part of Gafurov district in Sogd Province, Tajikistan with temperate climate zone [35][36][37]. Since in Taboshar the uranium mining industry was set up by USSR in the late 1940s and early 1950s as a part of the nuclear weapon program, the research area under investigation is probably impacted by remnants of nuclear weapons production.…”

Section: Physical Settingsmentioning

confidence: 99%

Tree-Ring-Based Summer Temperature Minimum Reconstruction for Taboshar, Sogd Province, Tajikistan, Since AD 1840: Linkages to the Oceans

Zulfiyor¹,

Yu²,

Akylai³

et al. 2018

Preprint

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Despite the ecological importance of forest tree species, our study was motivated by scarce data on dendrochronology studies limited to the northwestern part of Tajikistan due to lack of access to such a part of the country which is difficult to access. Current studies on Junipers in the northwestern part of Tajikistan identified that tree ring-based climate reconstruction is possible.Cores of Juniperus Turkestanica from Taboshar area, Sogd province were developed into 176-year tree-ring width chronology. In the current study a summer (June-September) minimum temperature reconstruction spanning AD 1840-2016 was developed, which can explain 30.0% of the instrumental variableness for the period of 1940 . Five warmest (1856 -1866 , 1869 -1871 , 1907 -1916 , 1923 -1935 , 1988 and four coldest time periods (1840-1855, 1872-1906, 1917-1922, 1940-1984) were identified. The developed reconstruction coincides with cold and warm periods with prior investigations from tree-rings in China, Mongolia, Kyrgyzstan, Kazakhstan and Tajikistan. Spatial correlation analysis with the gridded minimum temperature data shows that the temperature reconstruction covers geographical representation over High Asia. Significant correlation was found between temperature reconstruction with summer SST, which suggests strong linkages of regional temperature variability with IndianOcean climate system. The obtained spectral peaks from the spectral analysis of the summer temperature reconstruction were significantly at 84.7-year (90%), 2.9-year (99%), 2.6-year (99%), 2.5-year (99%), 2.4-year (99%) and 2.2-year (99%).

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Vessel features of Quercus ilex L. growing under Mediterranean climate have a better climatic signal than tree-ring width

Cited by 100 publications

References 45 publications

Imprisoned in the Cretan mountains: How relict Zelkova abelicea (Ulmaceae) trees cope with Mediterranean climate

Imprisoned in the Cretan mountains: How relict Zelkova abelicea (Ulmaceae) trees cope with Mediterranean climate

Earlywood vessel features in Quercus faginea: relationship between ring width and wood density at two sites in Portugal

Tree-Ring-Based Summer Temperature Minimum Reconstruction for Taboshar, Sogd Province, Tajikistan, Since AD 1840: Linkages to the Oceans

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