Contrasting Resource Dynamics in Mast Years for European Beech and Oak—A Continental Scale Analysis
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- ffgc-04-689836
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Resource allocation to different plant tissues is likely to be affected by high investment into fruit production during mast years. However, there is a large knowledge gap concerning species-specific differences in resource dynamics. We investigated the influence of mast years on stem growth, leaf production, and leaf carbon (C), nitrogen (N), and phosphorus (P) concentrations and contents in Fagus sylvatica, Quercus petraea, and Q. robur at continental and climate region scales using long-term data from the International Co-operative Programme on Assessment and Monitoring of Air Pollution Effects on Forests (ICP Forests) and similar datasets. We discussed the results in the light of opposing resource dynamics hypotheses: (i) resource accumulation before mast years and exhaustion after mast years (resource storage hypothesis), (ii) shifting resources from vegetative to generative compartments (resource switching hypothesis), and (iii) investing resources concurrently in both vegetative and generative compartments (resource matching hypothesis). Linear mixed-effects modelling (LMM) showed that both stem growth and leaf production were negatively influenced by weather conditions which simultaneously lead to high fruit production. Thus, the impact of generative on vegetative growth is intermixed with effects of environmental factors. Superposed epoch analyses and LMM showed that for mast behaviour in F. sylvatica, there are indicators supporting the resource storage and the resource switching hypotheses. Before mast years, resources were accumulated, while during mast years resources switched from vegetative to generative tissues with reduced stem and leaf growth. For the Quercus species, stem growth was reduced after mast years, which supports the resource storage hypothesis. LMM showed that leaf C concentrations did not change with increasing fruit production in neither species. Leaf N and P concentrations increased in F. sylvatica, but not in Quercus species. Leaf N and P contents decreased with increasing fruit production in all species, as did leaf C content in F. sylvatica. Overall, our findings suggest different resource dynamics strategies in F. sylvatica and Quercus species, which might lead to differences in their adaptive capacity to a changing climate.
| Originalsprog | Engelsk |
|---|---|
| Artikelnummer | 689836 |
| Tidsskrift | Frontiers in Forests and Global Change |
| Vol/bind | 4 |
| Antal sider | 17 |
| ISSN | 2624-893X |
| DOI | |
| Status | Udgivet - 2021 |
Bibliografisk note
Funding Information:
We are grateful to the late Matthias Dobbertin who initiated this evaluation. The study was based on several surveys with data from the UNECE ICP Forests Collaborative Database (see www.icp-forests.net, data request 91) and national databases. In particular, data from the countries listed in Supplementary Tables 1A,B were used. We would like to thank the numerous field observation teams that collected the field observations and measurements, the laboratory technicians, the experts in the participating countries, as well as the Expert Panels on Growth, Litterfall, Foliar and Crown Condition that harmonised the applied methods, especially Anna Brechb?hl, Noureddine Hajjar, Christian Hug, and Oliver Schramm (WSL, Swiss Federal Institute for Forest, Snow and Landscape Research, Switzerland), Sabine Braun (Institute of Applied Plant Biology, Switzerland), Luc Crois? (Office National des For?ts, Direction Technique et Commerciale Bois, France), Johannes Eichhorn (Nordwestdeutsche Forstliche Versuchsanstalt NW-FVA, Germany), Nadine Eickenscheidt (Landesamt f?r Natur, Umwelt und Verbraucherschutz Nordrhein-Westfalen LANUV, Germany), Gianfranco Fabbio (Agricultural Research Council, Research Unit for Forest Monitoring and Planning, Italy), Alfred F?rst (Institute for Forest Protection, Austria), Rainer Hentschel (Landesbetrieb Forst Brandenburg, Germany), Hubert Jochheim (Leibniz-Zentrum f?r Agrarlandschaftsforschung ZALF, Germany), Mikl?s Manninger (NARIC Forest Research Institute, Hungary), Mar?a Jos? Manzano Serrano (ESMA Estudios Medioambientales S.L., Spain), Jan Martin (Landesforst Mecklenburg-Vorpommern, Germany), Giorgio Matteucci (Istituto per i Sistemi Agricoli e Forestali del Mediterraneo, Italy), Claude Parini (Administration de la Nature et des For?ts, Luxembourg), Ekaterina Pavlova (University of Forestry, Bulgaria), Alexander Russ (Landeskompetenzzentrum Forst Eberswalde LFE, Germany), Hans-Werner Schroeck (Forschungsanstalt f?r Wald?kologie und Forstwirtschaft Rheinland-Pfalz, Germany), Iben Margrete Thomsen (Department of Geosciences and Natural Resource Management, University of Copenhagen, Denmark), and Slavka Tothova (National Forest Centre and Forest Research Institute, Slovakia). This study is part of the dissertation by AN (Nussbaumer, 2021). Funding. The data collection was co-financed by governmental bodies of the participating countries and by the European Commission under regulations (EEC) No. 2158/86, Forest Focus (EC) No. 2152/200, and FutMon (EC) LIFE07 ENV/D/218. It was further co-financed by the Swiss State Secretariat for Education, Research and Innovation (SERI C11.0140) within the Cost Action FP0903 ?Climate Change and Forest Mitigation and Adaptation in a Polluted Environment? and with Croatian Science Foundation projects EFFEctivity (HRZZ-UIP-2013-11-2492) and MODFLUX (HRZZ-IP-2019-04-6325).
Publisher Copyright:
© Copyright © 2021 Nussbaumer, Gessler, Benham, de Cinti, Etzold, Ingerslev, Jacob, Lebourgeois, Levanic, Marjanović, Nicolas, Ostrogović Sever, Priwitzer, Rautio, Roskams, Sanders, Schmitt, Šrámek, Thimonier, Ukonmaanaho, Verstraeten, Vesterdal, Wagner, Waldner and Rigling.
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