Climate-tree-growth relationships of<i>Quercus petraea</i>Mill. stand in the Forest of Bercé (“Futaie des Clos”, Sarthe, France)

Lebourgeois, François; Cousseau, Guillaume; Ducos, Y.

doi:10.1051/forest:2004029

Cited by 109 publications

(117 citation statements)

References 38 publications

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“…4). Although the negative coefficients obtained for the winter-spring temperature tend to agree with the response of Q. petraea in western France (Lebourgeois et al, 2004) but the correlation does not reach p=0.05 level here, even if months were averaged. The weaker climatic signal in EW compared to LW or RW usually observed in oaks (Eckstein and Schmidt, 1974;Nola, 1996;Garcia-González and Eckstein, 2003) and a complete lack of significant response to temperature or precipitation for EW was reported also from a multisite study from Switzerland (Fonti and Garcia-González, 2008).…”

Section: Climatological Datamentioning

confidence: 55%

“…Rbar runs generally below the 0.3 level for EW while exceed this level for LW and RW over the entire record (Fig. 2) Lebourgeois et al, 2004;Fonti and Garcia-González, 2008). Overall, dendrochronological statistics gave the impression that EW and LW carries different dendrochronological and probably different climatic signal as well.…”

Section: Stable Carbon Isotope Measurements and Subsequent Correctionsmentioning

confidence: 99%

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Multiple tree-ring proxies (earlywood width, latewood width and δ13C) from pedunculate oak (Quercus robur L.), Hungary

Kern

Patkó

Kázmér

et al. 2013

Quaternary International

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The aim of this study was to analyse the effects of climatic factors (i.e. monthly mean temperature and total precipitation) on radial growth (earlywood width, latewood width, and total ringwidth) and on latewood stable carbon isotope composition in a pedunculate oak (Quercus robur L.) stand in northeastern Hungary. Earlywood widths showed the weakest common variance and lack of statistically significant relationship to monthly precipitation and temperature. Latewood width showed the strongest common chronological signal. Correlation analysis with the monthly climate series pointed out the strongest positive/negative correlation with June precipitation for latewood width/stable carbon isotope ratio. These parameters shared the strongest climatic response also for seasonal scale since the highest correlation coefficients, 0.49 and -0.62 for latewood width and stable carbon isotope ratio, respectively, were obtained for both with a 10-month precipitation total (from previous November to current August of the growing season). A combined parameter, derived as difference between latewood width and stable carbon isotope indices showed improved statistical relationship compared to the hydroclimatic calibration target both for local and regional spatial scales. Spatial correlation analysis indicated that the hydroclimatic signal encoded in these moisture sensitive tree-ring parameters from Bakta Forest is expected to be representative for the northeastern Carpathians and for the large part of the Great Hungarian Plain. In addition, the hydroclimatic signal of latewood width chronology was compared to three independent records. Results showed that neither the strength nor the rank of the similarity of the local hydroclimate signals were stable throughout the past two centuries. Future palaeo(hydro)climatological efforts targeting the Carpathian(-Balkan) region are recommended to track carefully the spatial domains for which a given, local, proxy-derived hydroclimate reconstruction might provide useful information.

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Section: Climatological Datamentioning

confidence: 55%

Section: Stable Carbon Isotope Measurements and Subsequent Correctionsmentioning

confidence: 99%

Multiple tree-ring proxies (earlywood width, latewood width and δ13C) from pedunculate oak (Quercus robur L.), Hungary

Kern

Patkó

Kázmér

et al. 2013

Quaternary International

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“…Descriptive statistics indicated that the quality of site chronologies of A. glutinosa was comparable with the other chronologies of broad-leaf trees from the temperate zone of Europe (Dittmar et al, 2003;Lebourgeois, 2004;2005;Rozas, 2005). As these chronologies showed, MS (which expresses the relative variability in growth indices between adjacent rings) usually reaches 0.18-0.39.…”

Section: Growth Responses Of Alnus Glutinosa To Environmental Conditionsmentioning

confidence: 89%

“…AC, which indicates a dependence of current growth on the previous year's growth, normally ranges between 0.5-0.79 and thus corresponds with our results. Similarly, statistics reflecting the common growth variation in the individual ring-width series coincided with normal ranges: SNR 5.1-18, VFE 30-58%, MCAT 0.2-0.64, APC 0.77-0.92 (Dittmar et al, 2003;Lebourgeois, 2004;2005;Rozas, 2005). We can conclude that tree-ring width of A. glutinosa was sufficiently sensitive so as to reflect the signal of exogenous factors; our detected values for A. glutinosa were usually in the middle or higher range of the chronology statistics.…”

Section: Growth Responses Of Alnus Glutinosa To Environmental Conditionsmentioning

confidence: 99%

“…III). In the first phase, trends were approximated by a negative exponential function or by a regression line; in the second phase, a cubic smoothing spline with 50% frequency response of 50 y was used (Cook and Peters, 1981;Lebourgeois et al, 2004). Dimensionless indices were computed as the ratio of the observed ring width to the predicted ring-width value.…”

Section: Dendrochronologymentioning

confidence: 99%

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Development of alder carr after the abandonment of wet grasslands during the last 70 years

et al. 2009

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Keywords:aerial photograph / Alnus glutinosa (L.) Gaertn. / dendrochronology / land abandonment / secondary succession / wetland Abstract • The secondary succession of wet grasslands to communities of alder carr dominated by Alnus glutinosa was recorded in different parts of Europe during the 20th century. However, knowledge of such development of alder carr remains insufficient.• The development of alder carr was reconstructed at five sites in the Czech Republic, using historical aerial photographs and methods of dendrochronology. The aims were to investigate the succession from wet grasslands to alder carr at sites previously intensively managed for agriculture and to find out the role of fluctuations in the groundwater table, caused by artificial drainage channels, in the observed stand dynamics and tree growth.• The spread of forest (i.e., an increase in forest cover) predominated until the 1970s at all sites. This trend was disrupted by a large-scale dieback of forest stands in four of the five sites after the 1970s, followed by an increase in patch heterogeneity, as indicated by landscape metrics. The radial growth increment in Alnus glutinosa has been affected predominately by local environmental factors, probably including the changing degree of waterlogging. Forest dieback was presumably connected with a lesser extent of drainage channels.• Our results indicate that observed successional pathways at sites of alder carr were probably caused by local changes in the groundwater table.Mots-clés : photographie aérienne / Alnus glutinosa (L.) Gaertn. / dendrochronologie / abandon des terres / succession secondaire / zones humides Résumé -Développement de taillis d'aunes après l'abandon des prairies humides au cours des 70 dernières années.• La succession secondaire des prairies humides en communautés de taillis d'aunes dominées par Alnus glutinosa a été enregistrée dans différentes parties de l'Europe au cours du 20 e siècle. Toutefois, la connaissance du développement de taillis d'aunes reste insuffisante.• Le développement de taillis d'aunes a été reconstruit dans cinq sites en République Tchèque, à l'aide de photographies aériennes historiques et des méthodologies de la dendrochronologie. Les objectifs étaient d'étudier la succession de prairies humides en taillis d'aunes sur des sites précédem-ment exploités intensivement par l'agriculture et de découvrir le rôle des fluctuations de la nappe phréatique, causées par le drainage artificiel des canaux, et d'observer la dynamique des peuplements et la croissance des arbres.• La progression de la forêt (c'est-à-dire, l'augmentation du couvert forestier) a prédominé jusque dans les années 1970 dans tous les sites. Cette tendance a été perturbée par un vaste dépérissement des peuplements forestiers dans quatre des cinq sites après les années 1970, suivie par une augmentation de l'hétérogénéité des bouquets d'arbres, comme indiqué par les paramètres du paysage. L'augmentation de la croissance radiale de Alnus glutinosa a été affectée principalement par les facteu...

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Historic declines in growth portend trembling aspen death during a contemporary leaf miner outbreak in Alaska

et al. 2021

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Climate change-driven droughts and insect outbreaks are becoming more frequent and widespread, increasing forest vulnerability to mortality. By addressing the impacts of climate and insects on tree growth preceding death, we can better understand tree mortality risk under a changing climate. Here, we used tree stature and interannual growth (basal area increment; BAI) to assess processes leading to trembling aspen (Populus tremuloides) survival or mortality during an unprecedented leaf miner (Phyllocnistis populiella) outbreak in boreal North America. We identified eight sites (22 plots) in the longest running forest monitoring network in Alaska, spanning~350 km of latitude, that experienced ≥0.25 MgÁha À1 Áyr À1 aspen mortality during the outbreak. We compared the size and canopy position, growth patterns, and sensitivity to climate and leaf mining of aspen that survived (living; n = 84) vs. died (dying; n = 76) and linked the normalized difference vegetation index (NDVI) to plot-level aspen growth and stand biomass recruitment, growth, and mortality. Dying aspen were in the subcanopy, smaller in diameter, and after a drought in 1957 had lower growth than living aspen until death. Before the outbreak, growth of all trees was positively influenced by moisture and negatively by temperature, but only living trees maintained this climate response during the outbreak. Leaf mining reduced growth of both groups, exerting at least a twofold greater impact than climate. The NDVI captured plot-level tree growth and stand biomass growth and mortality, yet it was nearly two times more strongly associated with living than dying tree growth and 12 times more strongly associated with biomass growth than mortality. These differences suggest that NDVI may inadequately detect insect-driven dieback and dispersed mortality of aspen across the boreal biome. Our findings reveal that a historic drought triggered a multi-decadal growth decline that predisposed aspen to mortality during the leaf miner outbreak and that while aspen growth is influenced by moisture and temperature, it is more strongly affected by P. populiella. We conclude that as the climate warms and insect outbreaks increase in frequency and magnitude at high latitudes, we should expect to see persistent and greater declines in aspen growth and increases in mortality.

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Climate-tree-growth relationships ofQuercus petraeaMill. stand in the Forest of Bercé (“Futaie des Clos”, Sarthe, France)

Cited by 109 publications

References 38 publications

Multiple tree-ring proxies (earlywood width, latewood width and δ13C) from pedunculate oak (Quercus robur L.), Hungary

Multiple tree-ring proxies (earlywood width, latewood width and δ13C) from pedunculate oak (Quercus robur L.), Hungary

Development of alder carr after the abandonment of wet grasslands during the last 70 years

Historic declines in growth portend trembling aspen death during a contemporary leaf miner outbreak in Alaska

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