What drives growth of Scots pine in continental Mediterranean climates: Drought, low temperatures or both?

Sánchez‐Salguero, Raúl; Camarero, J. Julio; Hevia, Andrea; Madrigal‐González, Jaime; Linares, Juan Carlos; Cánovas, Juan Antonio Ballesteros; Sánchez-Miranda, Ángela; Alfaro‐Sánchez, Raquel; Sangüesa‐Barreda, Gabriel; Galván, J. Diego; Gutiérrez, Emília; Génova, Mar; Rigling, Andreas

doi:10.1016/j.agrformet.2015.03.004

Cited by 80 publications

(88 citation statements)

References 40 publications

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“…Under more continental and colder conditions, cambial resumption is delayed and summer precipitation and temperature become more relevant as drivers of growth in species as Scots pine (Sánchez-Salguero et al 2015). This explains why earlywood density may not be related to spring precipitation in some Mediterranean Scots pine stands (Olivar et al 2015).…”

Section: )mentioning

confidence: 93%

“…This research could explicitly consider wood anatomy to disentangle if MN changes are mainly due to lumen modifications, as we assume, or to changes in cell-wall thickness. For instance, in drought-exposed Width and density variables of tree-rings provide redundant information (Kirdyanov et al 2007, Büntgen et al 2010, Vaganov and Kirdyanov 2010, Galván et al 2015. This limitation could apply to MN which is negatively related to EW and both variables show opposite associations with rainfall (Tables 4 and S1).…”

Section: )mentioning

confidence: 94%

“…Such precipitation-density coupling, possibly mediated by a conductivity reduction, could also explain the decrease in earlywood production observed in response to water deficit in drought-prone sites from the forest-steppe and Mediterranean biomes (e.g., Dulamsuren et al 2010;Camarero et al 2015). According to ecophysiological studies, in these cool-dry regions photosynthesis rates decrease in winter and summer and growing-season drought stress, caused by elevated atmospheric vapour pressure deficit and low soil water availability, leads to radial-growth reduction (Dulamsuren et al 2009;Gimeno et al 2012).…”

Section: )mentioning

confidence: 99%

“…Continental climate conditions and low precipitation values explain why tree growth is constrained by drought during the growing season and a short growing season defined by long and cold winters in all the study areas (Block et al 2004, Dulamsuren et al 2009, Velisevich and Kozlov 2006, Devi et al 2008, Knorre et al 2010, Camarero et al 2015. In Siberia and Mongolia we sampled larch (Larix sibirica Ledeb.)…”

Section: Study Sites and Speciesmentioning

confidence: 99%

“…The southernmost study region is located in the Sierra de Gúdar (southern Iberian Range, eastern Spain) and includes two Scots pine stands and two Black pine stands. In this area, the study sites were distributed along an elevational gradient because Scots pine dominates at cold Mediterranean sites situated at higher elevation, whereas Black pine is dominant at mid-elevation sites experiencing sub-Mediterranean transitional climates (Camarero et al 2015). We sampled one site (LR in Table 1) where the two species cooccurred to check for differences between species coexisting under similar climate and soil conditions.…”

Section: Study Sites and Speciesmentioning

confidence: 99%

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Minimum wood density of conifers portrays changes in early season precipitation at dry and cold Eurasian regions

Camarero

Fernández-Pérez

Kirdyanov

et al. 2017

Trees

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SummaryIn conifers tracheids fulfill most of the main wood functions (mechanical support, water transport). Earlywood tracheids account for most hydraulic conductivity within the annual tree ring. Therefore, dry conditions during the early growing season, when earlywood is formed, should lead to the formation of narrow tracheid lumens and a dense earlywood. Here we test if there is an inverse relationship between minimum wood density and early growing-season (spring) precipitation. We study growth and density data of three Pinaceae species (Pinus sylvestris, Pinus nigra, and Larix sibirica) widely distributed in three cool-dry Eurasian regions from the forest-steppe (Russia, Mongolia) and Mediterranean (Spain) biomes. Using dendrochronology, we measured for each annual tree ring and the common 1950-2002 period the following variables: earlywood (EW hereafter) and latewood widths (LW hereafter), and minimum (MN hereafter) and maximum wood density (MX hereafter). As expected, dry early-growing season (spring) conditions were associated to low EW values but, most importantly, to high MN values in the three study species. The associations between MN and spring precipitation were stronger than those observed with EW. We interpret the relationship between spring water availability and high minimum density as a drought-induced reduction in lumen diameter, hydraulic conductivity and growth. Consequently, forecasted growing-season drier conditions would translate into increased minimum wood density and reflect a reduction in hydraulic conductivity, radial growth and wood formation. Increased aridity would diminish the ability of Eurasian conifer forests subjected to coldness and drought to fix and store carbon as durable woody pools.

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Section: )mentioning

confidence: 93%

Section: )mentioning

confidence: 94%

Section: )mentioning

confidence: 99%

Section: Study Sites and Speciesmentioning

confidence: 99%

Section: Study Sites and Speciesmentioning

confidence: 99%

See 3 more Smart Citations

Minimum wood density of conifers portrays changes in early season precipitation at dry and cold Eurasian regions

Camarero

Fernández-Pérez

Kirdyanov

et al. 2017

Trees

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Last‐century forest productivity in a managed dry‐edge Scots pine population: the two sides of climate warming

Marqués

Madrigal‐González

Zavala

et al. 2017

Ecological Applications

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Abstract. Climate change in the Mediterranean, associated with warmer temperatures and more frequent droughts, is expected to impact forest productivity and the functioning of forests ecosystems as carbon reservoirs in the region. Climate warming can positively affect forest growth by extending the growing season, whereas increasing summer drought generally reduces forest productivity and may cause growth decline, trigger dieback, hamper regeneration, and increase mortality. Forest management could potentially counteract such negative effects by reducing stand density and thereby competition for water. The effectiveness of such interventions, however, has so far mostly been evaluated for short time periods at the tree and stand levels, which limits our confidence regarding the efficacy of thinning interventions over longer time scales under the complex interplay between climate, stand structure, and forest management. In this study, we use a century-long historical data set to assess the effects of climate and management on forest productivity. We consider rear-edge Scots pine (Pinus sylvestris) populations covering continental and Mediterranean conditions along an altitudinal gradient in Central Spain. We use linear mixed-effects models to disentangle the effects of altitude, climate, and stand volume on forest growth and ingrowth (recruitment and young trees' growth). We find that warming tends to benefit these tree populations, warmer winter temperature has a significant positive effect on both forest growth and ingrowth, and the effect is more pronounced at low elevations. However, drought conditions severely reduce growth and ingrowth, in particular when competition (stand volume) is high. We conclude that summer droughts are the main threat to Scots pine populations in the region, and that a reduction of stand volume can partially mitigate the negative impacts of more arid conditions. Mitigation and adaptation measures could therefore manage stand structure to adopt for the anticipated impacts of climate change in Mediterranean forest ecosystems.

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Radial growth response of two oaks to climate at their disparate distribution limits in semiarid areas, Beijing, China

Gao

Lei

et al. 2020

Ecosphere

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Impending climate warming is expected to influence plant growth and distribution, and the distribution range limit of tree species is extremely sensitive to climate change. However, synchronous comparisons of responses of different tree species with overlapping ecological niches to climate at their distribution range limit in the same region have received little attention. In the present study, we assessed the discrepancy in radial growth responses of two dominant oak species to climate at their distribution range limit (southern range limit for Quercus mongolica, northern range limit for Quercus variabilis) in Beijing, China. Furthermore, growth–climate relationships were examined using linear mixed‐effects models, and growth trends up to the year 2100 were forecast based on future climate scenarios (RCP2.6 and RCP8.5). Our results indicated that there were no significant differences in the growth response to climate between Q. variabilis at its northern limit and Q. mongolica at its southern limit, and the growth of the two tree species was positively correlated with the minimum temperature and negatively correlated with the climatic moisture deficit of autumn. However, the growth response to climate variables varied at different sites. Additionally, the model forecast showed an increase in radial growth of Q. variabilis at its northern limit and Q. mongolica at its southern limit up to the end of the present century.

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What drives growth of Scots pine in continental Mediterranean climates: Drought, low temperatures or both?

Cited by 80 publications

References 40 publications

Minimum wood density of conifers portrays changes in early season precipitation at dry and cold Eurasian regions

Minimum wood density of conifers portrays changes in early season precipitation at dry and cold Eurasian regions

Last‐century forest productivity in a managed dry‐edge Scots pine population: the two sides of climate warming

Radial growth response of two oaks to climate at their disparate distribution limits in semiarid areas, Beijing, China

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