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Lopez Rodriguez, Rosa AnaAuthorZafra Felipe, Elena CristinaAuthorRodriguez Calcerrada, JesusAuthorRodriguez-Garcia, AAuthorGonzalez-Doncel, IAuthorZytkowiak R.AuthorValbuena Carabaña, MaríaAuthorMiranda, JcAuthorGil, LCorresponding Author

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June 9, 2019
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Unearthing the roots of degradation of Quercus pyrenaica coppices: A root-to-shoot imbalance caused by historical management?

Publicated to: FOREST ECOLOGY AND MANAGEMENT. 363 200-211 - 2016-03-01 363(), DOI: 10.1016/j.foreco.2015.12.040

Authors:

Salomón, R; Rodríguez-Calcerrada, J; Zafra, E; Morales-Molino, C; Rodríguez-García, A; González-Doncel, I; Oleksyn, J; Zytkowiak, R; López, R; Miranda, JC; Gil, L; Valbuena-Carabaña, M
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Affiliations

Polish Acad Sci, Inst Dendrol, Parkowa 5, PL-62035 Kornik, Poland - Author
Tech Univ Madrid UPM, Forest Genet & Ecophysiol Res Grp, ETS Forestry Engn, Madrid 28040, Spain - Author
Univ Bern, Inst Plant Sci, Altenbergrain 21, CH-3013 Bern, Switzerland - Author
Univ Bern, Oeschger Ctr Climate Change Res, Altenbergrain 21, CH-3013 Bern, Switzerland - Author
Univ Western Sydney, Hawkesbuty Inst Environm, Richmond, NSW 2753, Australia - Author
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Abstract

Slow growth, branch dieback and scarce acorn yield are visible symptoms of decay in abandoned Quercus pyrenaica coppices. A hypothetical root-to-shoot (R:S) imbalance provoked by historical coppicing is investigated as the underlying driver of stand degradation. After stem genotyping, 12 stems belonging to two clones covering 81 and 16 m2 were harvested and excavated to measure above- and below ground biomass and nonstructural carbohydrate (NSC) pools. To study root system functionality, root connections and root longevity were assessed by radiocarbon analysis. Seasonality of NSC was monitored on five additional clones. NSC pools, R:S biomass ratio and fine roots-to-foliage ratio were higher in the large clone, whose centennial root system, estimated to be 550 years old, maintained large amounts of sapwood (51.8%) for NSC storage. 248 root connections were observed within the large clone, whereas the small clone showed comparatively simpler root structure (26 connections). NSC concentrations were higher in spring (before bud burst) and autumn (before leaf fall), and lower in summer (after complete leaf expansion); they were always higher in roots than in stems or twigs. The persistence of massive and highly inter-connected root systems after coppicing may lead to increasing R:S biomass ratios and root NSC pools over time. We highlight the need of surveying belowground organs to understand aboveground dynamics of Q. pyrenaica, and suggest that enhanced belowground NSC storage and consumption reflect a trade-off between clonal vegetative resilience and aboveground performance. (C) 2016 Elsevier B.V. All rights reserved.
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Keywords

Biomass allocationBiomass partitioningCarbohydrate reservesDynamicsForest declineGraftingGrowth-responseMulti-stemmed treePine pinus-banksianaPopulus-tremuloidesResproutingSessile oakStandsTreesVegetative regenerationWilld.

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal FOREST ECOLOGY AND MANAGEMENT due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2016, it was in position 3/64, thus managing to position itself as a Q1 (Primer Cuartil), in the category Forestry.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations provided by WoS (ESI, Clarivate), it yields a value for the citation normalization relative to the expected citation rate of: 2.38. This indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 13, 2025)

This information is reinforced by other indicators of the same type, which, although dynamic over time and dependent on the set of average global citations at the time of their calculation, consistently position the work at some point among the top 50% most cited in its field:

  • Weighted Average of Normalized Impact by the Scopus agency: 2.07 (source consulted: FECYT Mar 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2026-04-25, the following number of citations:

  • WoS: 45
  • Scopus: 46
  • Europe PMC: 3
  • Google Scholar: 46
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Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2026-04-25:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 78.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 76 (PlumX).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://oa.upm.es/86050/

As a result of the publication of the work in the institutional repository, statistical usage data has been obtained that reflects its impact. In terms of dissemination, we can state that, as of

  • Views: 128
  • Downloads: 36
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Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Australia; Poland; Switzerland.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (Salomon, R) and Last Author (Valbuena-Carabana, M).

the author responsible for correspondence tasks has been GIL SANCHEZ, LUIS ALFONSO.

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Awards linked to the item

We are grateful to Javier Dories, director of the Centro de Montes y Aserradero de Valsain, for economic and logistic support. We thank Manuel Iglesias for Fig. 6 and his inestimable support in the field and lab work together with Cesar Otero, Guillermo Gonzalez, Eva Miranda, Paula Guzman, Alfredo Cabranes and Andres Sanz. We also thank to Drs. Fabio Marzaioli and Filippo Terrasi of the Center for Isotopic Research on the Cultural and Environmental Heritage for radiocarbon dating. Roberto Salomon was supported by a Ph.D. scholarship from the Universidad Politecnica de Madrid. Cesar Morales-Molino holds a Swiss Government Excellent Postdoctoral Scholarship for Foreign Researchers (Ref.: 2014.0386). This work was funded by the CAM P2009/AMB-1668 and P2013/MAE-2760 projects and the Transnational Access to Research Infrastructures activity in the Seventh Framework Programme of the European Union under the Trees4Future project (284181).
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