Physiological performance of silver-fir (Abies alba Mill.) populations under contrasting climates near the south-western distribution limit of the species

Peguero‐Pina, José Javier; Camarero, J. Julio; Abadı́a, Anunciación; Martín, Enrique; González-Cascón, Rosario; Morales, Fermı́n; Gil‐Pelegrín, Eustaquio

doi:10.1016/j.flora.2006.06.004

Cited by 60 publications

(48 citation statements)

References 31 publications

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“…Declining sites are shown as underlined bold codes Rolland et al 1999;Tardif et al 2003). This fact is consistent with the low stomatal regulation of gas exchange in silver fir and its dieback in sites with high leaf-to-air vapour pressure difference in response to warmer air temperatures (Peguero-Pina et al 2007;Vicente-Serrano et al 2015). Other factors such as nitrogen deposition might also be involved as occurred in the Vosges, where silver-fir dieback was also related to acidification (Pinto et al 2007).…”

Section: Climate-growth Associations: the Critical Rolesupporting

confidence: 63%

The Multiple Factors Explaining Decline in Mountain Forests: Historical Logging and Warming-Related Drought Stress is Causing Silver-Fir Dieback in the Aragón Pyrenees

Camarero

2017

High Mountain Conservation in a Changing World

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The drivers and patterns of drought-related forest dieback are not as well understood in mountain conifer forests. Most studies have obviated the role of historical use as a predisposing factor of forest dieback. Here I focus on the recent silver-fir (Abies alba) dieback observed since the 1980s in the Aragón Pyrenees (NE Spain) as study case. I argue that such dieback was predisposed by past historical logging and incited by warming-induced drought. I analyzed environmental, structural and tree-ring data from 32 sites with contrasting degrees of dieback at the tree and stand levels. I found that a peak in late-summer water deficit observed in 1985 caused a severe growth reduction in 1986, resulting in subsequent crown defoliation, dieback and increased mortality. Dieback was more severe and widespread in western low-elevation mixed forests dominated by smaller trees with low growth rates. These marginal sites receive less late-summer rainfall, which is a key climatic variable controlling silver-fir growth, than eastern sites. Declining sites showed more frequent growth releases induced by historical logging than non-declining sites. Silver-fir growth is becoming more dependent on climatic conditions of previous September, which may be connected with changing modes of atmospheric variability affecting Iberian climate. Historical logging and warming-induced drought stress during late summer are the most likely predisposing and inciting factors driving silver-fir dieback, respectively. A sustainable management of mountain forests shaped by past historical use requires changing their current structure and composition to make them more resilient to climate warming.

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Section: Climate-growth Associations: the Critical Rolesupporting

confidence: 63%

The Multiple Factors Explaining Decline in Mountain Forests: Historical Logging and Warming-Related Drought Stress is Causing Silver-Fir Dieback in the Aragón Pyrenees

Camarero

2017

High Mountain Conservation in a Changing World

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“…A decline in osmotic potential has been interpreted as a response to water stress, mediated by an increase in osmotically active solutes at the cellular level. This may be achieved by a passive concentration of existing solutes due to dehydration and reduction in cell size (strictly speaking not an osmotic adjustment) or by active redistribution of solutes [58,59]. During the drought period, our data showed variations in A. pinsapo needle osmotic potential around −0.25 MPa, although the xylem water potential decreased by −1.0 MPa; furthermore, these variables were not correlated.…”

Section: 2capacity Of Osmotic Adjustmentmentioning

confidence: 54%

“…During the drought period, our data showed variations in A. pinsapo needle osmotic potential around −0.25 MPa, although the xylem water potential decreased by −1.0 MPa; furthermore, these variables were not correlated. The absence of osmotic adjustment in A. pinsapo in response to drought confirms its low tolerance to water stress [58]. Moreover, the obtained values could be related to limited soil nutrient uptake, restricting the synthesis of osmotically active substances when the stomata are closed.…”

Section: 2capacity Of Osmotic Adjustmentmentioning

confidence: 55%

Regulation of Water Use in the Southernmost European Fir (Abies pinsapo Boiss.): Drought Avoidance Matters

Sánchez‐Salguero

Ortíz

Covelo

et al. 2015

Forests

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Abstract:The current scenario of global warming has resulted in considerable uncertainty regarding the capacity of forest trees to adapt to increasing drought. Detailed ecophysiological knowledge would provide a basis to forecast expected species dynamics in response to climate change. Here, we compare the water balance (stomatal conductance, xylem water potential, needle osmotic adjustment) of Abies pinsapo, a relict drought-sensitive Mediterranean fir, along an altitudinal gradient. We related these variables to soil water and nutrient availability, air temperature, atmospheric water potential, and vapour pressure deficit during two consecutive years. Our results indicate that A. pinsapo closed stomata rapidly over a very narrow range of soil water availability and atmospheric dryness. This isohydric response during water stress suggests that this relict conifer relied on the plant hormone abscisic acid to maintain closed stomata during sustained drought, instead of needle desiccation to passively drive stomatal closure, needle osmotic adjustment OPEN ACCESS Forests2015, 62242 or a plastic response of the xylem to different levels of water availability. Both the soil and foliar nutrient contents suggest that the studied populations are not limited by nutrient deficiencies, and drought was stronger in the warmer low-elevation areas.

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“…and Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) favour not overly cool climates with a relatively high precipitation [6,65,99,100]. For the species native to Sweden, the inventory data, such as the percentages of different species in the forest, support the results of the model [46].…”

Section: Resultsmentioning

confidence: 90%

Estimating the Annual Above-Ground Biomass Production of Various Species on Sites in Sweden on the Basis of Individual Climate and Productivity Values

Trischler

Sandberg²,

Thörnqvist

2014

Forests

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Abstract:The literature contains a large number of bioclimate, climate and biometric models for estimating the production of different species or stands under specific conditions on a defined site or models giving the distribution of a single species. Depending on the model used, the amount of input data required varies considerably and often involves a large investment in time and money. The purpose of this study was to create a model to estimate the annual above-ground biomass production of various species from site conditions defined by mean annual temperature and mean annual precipitation. For this approach, the Miami model of Lieth was used as a base model with some modifications. This first version of the modified model was restricted to sites in Sweden, where changes in the soil and groundwater level were relatively small, and where the growth of land vegetation was mostly dependent on temperature. A validation of this model has shown that it seems possible to use the Miami model to estimate the annual above-ground biomass production of various species, and that it was possible to compare the annual above-ground biomass production of different species on one site, as well as the annual above-ground biomass production of different species on different sites using the modeled data.

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Physiological performance of silver-fir (Abies alba Mill.) populations under contrasting climates near the south-western distribution limit of the species

Cited by 60 publications

References 31 publications

The Multiple Factors Explaining Decline in Mountain Forests: Historical Logging and Warming-Related Drought Stress is Causing Silver-Fir Dieback in the Aragón Pyrenees

The Multiple Factors Explaining Decline in Mountain Forests: Historical Logging and Warming-Related Drought Stress is Causing Silver-Fir Dieback in the Aragón Pyrenees

Regulation of Water Use in the Southernmost European Fir (Abies pinsapo Boiss.): Drought Avoidance Matters

Estimating the Annual Above-Ground Biomass Production of Various Species on Sites in Sweden on the Basis of Individual Climate and Productivity Values

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