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Continental Contrasts in Climate Extremes That Control Tree Fecundity
Clark , James S. , Andrus , Robert A. , Arianoutsou , Margarita , Ascoli , Davide , Bergeron , Yves , Bogdziewicz , Michał , Boivin , Thomas , Bonal , Raúl , Caignard , Thomas , Cailleret , Maxime , Calama , Rafael A. , Camarero , Jesús Julio , Chianucci , Francesco , Cienciala , Emil , Courbaud , Benoít , Delzon , Sylvain , Dietze , Michael C. , Espelta , Josep Maria , Fady , Bruno , Fyllas , Nikolaos M. , Gilbert , Gregory S. , Gratzer , Georg , Guignabert , Arthur , Hacket-Pain , Andrew J. , Hampe , Arndt , Hanley , Mick E. , Hille Ris Lambers , Janneke , Holik , Jan , Hoshizaki , K. , Hu , Miao , Ibáñez , Inés , Işık , Fatih , Jenkins , Lauren , Johnstone , Jill F. , Journé , Valentin , Kadioglu , Alper Kaan , Kızılaslan , İrem Sena , Knops , Johannes Michael Hubertus , Kobe , Richard K. , Köse , Nesibe , Külah , Eylül U. , Kunstler , Georges , LaMontagne , Jalene M. , Ledwoń , Mateusz , Lehtonen , Aleksi , Loewe-Muñoz , Verónica F. , Lutz , James A. , Mårell , Anders , Meyer , Kira , Moran , Emily V. , Motta , Renzo , Myers , Jonathan A. , Nagel , Thomas A. , Pérez-Ramos , Ignacio M. , Piechnik , Łukasz , Podgórski , Tomasz , Poulton-Kamakura , Renata , Qiu , Tong , Redmond , Miranda D. , Reid , Chantal D. , Rodman , Kyle C. , Rodríguez-Sánchez , Francisco , Šamonil , Pavel , Šebeň , Vladimír , Seget , Barbara , Sharma , Shubhi , Socha , Jarosław Ł. , Steele , Michael A. , Straub , Jacob N. , Sutton , Samantha , Thomas , Peter A. , Vacchiano , Giorgio , Venner , Marie Claude , Venner , Samuel , Zavala , Miguel A. , Zheng , Shiqi , Żywiec , Magdalena
drought climate extremes forest recovery late freeze
Mostra abstract
In 2023, more than half of olive harvests (Olea europaea) across Spain, Greece, and Türkiye were lost to drought. The same year late freeze destroyed 90% of the peach crop (Prunus persica) on the Georgia Piedmont and the apple crop (Malus domestica) in central New York, Vermont, and southern Quebec. Climate extremes now rank with the costliest threats to agriculture, but their role in forest recovery from diebacks that are happening globally is unknown for lack of tree fecundity estimates in forests. Tolerance of climate extremes could depend on past exposure but constrained by phylogenetic conservatism. We report a continental scale analysis of climate extremes and forest fecundity across North America and Europe showing that responses to late freeze and drought are happening now. Species differences are not explained by the traits typically included in ecological studies and they are weakly associated with phylogeny. Late freeze, that is, freezing temperatures that follow the onset of flower development in spring, is shown to be “normal” in North America, but not Europe, potentially explaining failed seed production due to delayed onset and the resultant shorter growing period by North American transplants dating back at least to the 18th century. Drought has thus far had the greatest impacts in dry forested regions, but here too, species differences are not explained by traditional trait values. If responses have been buffered from drought and late freeze by past exposure, acclimation and local adaptation prove inadequate as extremes intensify. © 2026 John Wiley & Sons Ltd.
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2026
Rivista
Global Change Biology
Dettagli
Vol. 32 (2)
DOI
Silvicultural regime shapes understory functional structure in European forests
Chianucci , Francesco , Napoleone , Francesca , Ricotta , Carlo , Ferrara , Carlotta , Fusaro , Lina , Balducci , Lorenzo , Trentanovi , Giovanni , Bradley , Owen , Kovács , Bence , Mina , Marco , Cerabolini , Bruno Enrico Leone , Vandekerkhove , Kris , de Smedt , Pallieter , Lens , Luc , Hertzog , Lionel R. , Verheyen , Kris , Hofmeister , Jeňýk , Hošek , Jan , Matula , Radim , Doerfler , Inken , Müller , Jörg C. C. , Weisser , Wolfgang W. , Helback , Jan , Schall , Peter , Fischer , Markus , Heilmann-Clausen , Jacob , Riis-Hansen , Rasmus , Goldberg , Irina , Aude , Erik , Kepfer-Rojas , Sebastian , Kappel Schmidt , Inger , Riis-Nielsen , Torben , Mårell , Anders , Dumas , Yann , Janssen , Philippe , Paillet , Yoan , Archaux , Frédéric , Xystrakis , Fotios , Tinya , Flóra , Ódor , Péter , Aszalós , Réka , Bölöni , János , Cutini , Andrea , Bagella , Simonetta , Sitzia , Tommaso , Brazaitis , Gediminas , Marozas , Vitas , Ujházyová , Mariana , Ujházy , Karol , Máliš , František , Nordén , Björn , Burrascano , Sabina
functional diversity functional redundancy forest understory sustainable forest management unmanaged forests ecosystem resilience silvicultural regime
Mostra abstract
Managing forests to sustain their diversity and functioning is a major challenge in a changing world. Despite the key role of understory vegetation in driving forest biodiversity, regeneration and functioning, few studies address the functional dimensions of understory vegetation response to silvicultural management. We assessed the influence of the silvicultural regimes on the functional diversity and redundancy of European forest understory. We gathered vascular plant abundance data from more than 2000 plots in European forests, each associated with one out of the five most widespread silvicultural regimes. We used generalized linear mixed models to assess the effect of different silvicultural regimes on understory functional diversity (Rao's quadratic entropy) and functional redundancy, while accounting for climate and soil conditions, and explored the reciprocal relationship between three diversity components (functional diversity, redundancy and dominance) across silvicultural regimes through a ternary diversity diagram. Intensive silvicultural regimes are associated with a decrease in functional diversity and an increase in functional redundancy, compared with unmanaged conditions. This means that although intensive management may buffer communities' functions against species or functional losses, it also limits the range of understory response to environmental changes. Policy implications. Different silvicultural regimes influence different facets of understory functional features. While unmanaged forests can be used as a reference to design silvicultural practices in compliance with biodiversity conservation targets, different silvicultural options should be balanced at landscape scale to sustain the multiple forest functions that human societies are increasingly demanding. © 2024 The Author(s). Journal of Applied Ecology published by John Wiley & Sons Ltd on behalf of British Ecological Society.
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2024
Rivista
Journal of Applied Ecology
Dettagli
Vol. 61 (10) pp. 2350 - 2364
DOI