Drivers of seedling emergence and early growth of 12 European oak species: Results from a cross-continental experiment
Leverkus, Alexandro B.
Vendin¸ a, Viktorija
Tomczak, Arkadiusz
Topalovic, Ana
Rey Benayas, Jose María
Szczerba, Marek
Proietti, Roberta
Puccinelli, Stefano
Nunes, Luís
Plaza-´Alvarez, Pedro Antonio
Moreno Llorca, Ricardo A.
Nonić, Marina
Meloni, Fabio
Merino Ceballos, Manuel
Matías, Luis
McClory, Ryan
Malik, Roman
Martiník, Antonín
Kroon, Johan
La Montagna, Dario
Jim´enez Morales, M. Noelia
Kanjevac, Branko
Inger Sundheim, Fløistad
Devetaković, Jovana
D¯umin¸ˇs, K¯arlis
Corticeiro, Sofia
De Sanctis, Michele
Castro, Jorge
Chiatante, Donato
Bolzon, Paola
Carbonero Mu˜noz, María D.
Anselmetto, Nicol`o
Bauhus, Jürgen
Benavides, Raquel
Villar-Salvador, Pedro
Witzell, Johanna
Ure˜na-Lara, Carmen
Robakowski, Piotr
Sewerniak, Piotr
Oliet, Juan A.
Patrício, Maria S.
Navarro Reyes, Francisco B.
Montagnoli, Antonio
Monteverdi, Maria Cristina
Mondanelli, Lucia
Marzano, Raffaella
Maltoni, Alberto
Mariotti, Barbara
Mairota, Paola
Łukowski, Adrian
Maia, Paula
Lazarevic, Jelena
Lazdin¸ a, Dagnija
Lingua, Emanuele
L¨of, Magnus
Lucas-Borja, Manuel E.
Kremer, Klaus
Jovanovic, Sanja
Popovic, Vladan
Puchałka, Radosław
Poduška, Zoran
Kerkez Janković, Ivona
Holt Hanssen, Kjersti
Jakubowski, Marcin
G´omez-Aparicio, Lorena
Hampe, Arndt
Ferus, Peter
Medina, María
Lazaro-Gonzalez, Alba
Levy, Laura
Lorente-Casalini, Olivia
Reyes Martín, Marino P.
Andivia, Enrique
Bizzarri, Alessandro
B¨ohlenius, Henrik
Cambria, Vito E.
Cocozza, Claudia
Ehrenbergerova, Lenka
Cvjetković, Branislav
de Dato, Giovanbattista
Klisz, Marcin
Kowalkowski, Wojciech
ABSTRACT Seedling emergence constitutes a critical recruitment step, and early growth relates to plant competitive ability. Understanding their drivers has implications for forestry and forest ecosystem conservation, restoration, and adaptation to climate change. We seeded 6984 acorns in an experiment with 97 cases at 45 sites in 15 European countries, encompassing 12 oak species. We tested whether the quality of the acorn batch, site-level weather and soil characteristics, year of seeding, and species’ mean specific leaf area (SLA) affected the emergence and early growth of seedlings after the first summer. Germination potential and acorn dry weight, measured under controlled conditions, were positively associated with emergence and early growth. Seedling emergence was negatively associated with the mean monthly temperature and cumulative winter precipitation, and it was higher in the seedling cohort that was spared from the 2021 drought. Additionally, seedling emergence was positively related to soil nutrient concentration and negatively to increasing soil pH, but not to water-holding capacity, and growth was unrelated to soils. Species-level SLA was not related to either response. The four main study species –Quercus cerris, Q. ilex, Q. petraea, and Q. robur– responded similarly to weather but not to soil conditions. We conclude that, at a continental scale, and assuming that species establish within their current distributions, (a) oak seedling emergence and early growth are associated with acorn quality rather than species identity or SLA, (b) they are highest at sites with low winter precipitation and temperature, (c) emergence is reduced in dry years, and d) soil properties play a secondary role at this early recruitment stage.
engleski
2026
Ovo delo je licencirano pod uslovima licence
Creative Commons CC BY 4.0 - Creative Commons Autorstvo 4.0 International License.
http://creativecommons.org/licenses/by/4.0/legalcode
Seed quality, Regeneration, Direct seeding, Seed germination, Coordinated distributed experiment, Climatic gradient