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Growth decline in European beech associated with temperature-driven increase in reproductive allocation.
Proc Natl Acad Sci U S A
February 2025
Forest Biology Center, Institute of Environmental Biology, Faculty of Biology, Adam Mickiewicz University, 61-614 Poznan, Poland.
Climate change is impacting forests in complex ways, with indirect effects arising from interactions between tree growth and reproduction often overlooked. Our 43-y study of European beech () showed that rising summer temperatures since 2005 have led to more frequent seed production events. This shift increases reproductive effort but depletes the trees' stored resources due to insufficient recovery periods between seed crops.
View Article and Find Full Text PDFMulti-decadal tree-ring stable isotope records of apple and pear trees indicate coherent ecophysiological responses to environmental changes in alpine valleys.
Front Plant Sci
January 2025
Faculty of Agricultural, Environmental and Food Sciences, Free University of Bolzano, Bolzano, Italy.
The ecophysiological and ecohydrological impacts of climate change and progressively increasing atmospheric carbon dioxide (CO) concentration on agroecosystems are not well understood compared to the forest ecosystems. In this study, we utilized the presence of old apple and pear trees in the alpine valleys of Northern Italy (maintained for cultural heritage purposes) to investigate climate-scale physiological responses. We developed long-term tree-ring stable isotopic records (δC and δO) from apple (1976-2021) and pear trees (1943-2021).
View Article and Find Full Text PDFCentral Asia Cold Case: Siberian Pine Fingers New Suspects in Growth Decline CA 1700 CE.
Plants (Basel)
January 2025
Institute of Ecology and Geography, Siberian Federal University, 79 Svobodny Pr., Krasnoyarsk 660041, Russia.
Tree-ring width chronologies of Du Tour from near the upper treeline in the Western Sayan, Southern Siberia are found to have an exceptional (below mean-3SD) multi-year drop near 1700 CE, highlighted by the seven narrowest-ring years in a 1524-2022 regional chronology occurring in the short span of one decade. Tree rings are sometimes applied to reconstruct seasonal air temperatures; therefore, it is important to identify other factors that may have contributed to the growth suppression. The spatiotemporal scope of the "nosedive" in tree growth is investigated with a large network of (14 sites) and Ledeb.
View Article and Find Full Text PDFClimate signal age effects in tree-ring density data from the Spanish Pyrenees.
Trees (Berl West)
January 2025
Department of Geography, Johannes Gutenberg University, 55099 Mainz, Germany.
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Abstract: Tree-rings are the prime archive for high-resolution climate information over the past two millennia. However, the accuracy of annually resolved reconstructions from tree-rings can be constrained by what is known as climate signal age effects (CSAE), encompassing changes in the sensitivity of tree growth to climate over their lifespans. Here, we evaluate CSAE in from an upper tree line site in the Spanish central Pyrenees, Lake Gerber, which became a key location for reconstructing western Mediterranean summer temperatures at annual resolution.
Response of Pedunculate Oak ( L.) to Adverse Environmental Conditions in Genetic and Dendrochronological Studies.
Plants (Basel)
January 2025
Department of Silviculture, Forest Inventory and Forest Management, G.F. Morozov Voronezh State University of Forestry and Technologies, 394087 Voronezh, Russia.
Pedunculate oak ( L.) is widely distributed across Europe and serves critical ecological, economic, and recreational functions. Investigating its responses to stressors such as drought, extreme temperatures, pests, and pathogens provides valuable insights into its capacity to adapt to climate change.
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