With increasing site quality asymmetric competition and mortality reduces Scots pine (Pinus sylvestris L.) stand structuring across Europe

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dc.citation.spage120365
dc.citation.volume520
dc.contributor.authorPretzsch, Hans
dc.contributor.authorBravo-Oviedo, Andr´es
dc.contributor.authorHilmers, Torben
dc.contributor.authorRuiz-Peinado, Ricardo
dc.contributor.authorColl, Lluís
dc.contributor.authorL¨of, Magnus
dc.contributor.authorAhmed, Shamim
dc.contributor.authorAldea, Jorge
dc.contributor.authorAmmer, Christian
dc.contributor.authorAvdagić, Admir
dc.contributor.authorBarbeito, Ignacio
dc.contributor.authorBielak, Kamil
dc.contributor.authorBravo, Felipe
dc.contributor.authorBrazaitis, Gediminas
dc.contributor.authorCerný, Jakub
dc.contributor.authorCollet, Catherine
dc.contributor.authorDr¨ossler, Lars
dc.contributor.authorFabrika, Marek
dc.contributor.authorHeym, Michael
dc.contributor.authorHolm, Stig-Olof
dc.contributor.authorHylen, Gro
dc.contributor.authorJansons, Aris
dc.contributor.authorKurylyak, Viktor
dc.contributor.authorLombardi, Fabio
dc.contributor.authorMatović, Bratislav
dc.contributor.authorMetslaid, Marek
dc.contributor.authorMotta, Renzo
dc.contributor.authorNord-Larsen, Thomas
dc.contributor.authorNothdurft, Arne
dc.contributor.authorOrd´o˜nez, Crist´obal
dc.contributor.authorOuden, Jan den
dc.contributor.authorPach, Maciej
dc.contributor.authorPardos, Marta
dc.contributor.authorPonette, Quentin
dc.contributor.authorP´erot, Tomas
dc.contributor.authorReventlow, Ditlev Otto Juel
dc.contributor.authorSitko, Roman
dc.contributor.authorSramek, Vit
dc.contributor.authorSteckel, Mathias
dc.contributor.authorSvoboda, Miroslav
dc.contributor.authorUhl, Enno
dc.contributor.authorVerheyen, Kris
dc.contributor.authorVospernik, Sonja
dc.contributor.authorWolff, Barbara
dc.contributor.authorZlatanov, Tzvetan
dc.contributor.authordel Río, Miren
dc.date.accessioned2023-05-08T12:35:55Z
dc.date.available2023-05-08T12:35:55Z
dc.date.issued2022
dc.description.abstractHeterogeneity of structure can increase mechanical stability, stress resistance and resilience, biodiversity and many other functions and services of forest stands. That is why many silvicultural measures aim at enhancing structural diversity. However, the effectiveness and potential of structuring may depend on the site conditions. Here, we revealed how the stand structure is determined by site quality and results from site-dependent partitioning of growth and mortality among the trees. We based our study on 90 mature, even-aged, fully stocked monocultures of Scots pine (Pinus sylvestris L.) sampled in 21 countries along a productivity gradient across Europe. A mini-simulation study further analyzed the site-dependency of the interplay between growth and mortality and the resulting stand structure. The overarching hypothesis was that the stand structure changes with site quality and results from the site-dependent asymmetry of competition and mortality. First, we show that Scots pine stands structure across Europe become more homogeneous with increasing site quality. The coefficient of variation and Gini coefficient of stem diameter and tree height continuously decreased, whereas Stand Density Index and stand basal area increased with site index. Second, we reveal a site-dependency of the growth distribution among the trees and the mortality. With increasing site index, the asymmetry of both competition and growth distribution increased and suggested, at first glance, an increase in stand heterogeneity. However, with increasing site index, mortality eliminates mainly small instead of all-sized trees, cancels the size variation and reduces the structural heterogeneity. Third, we modelled the site-dependent interplay between growth partitioning and mortality. By scenario runs for different site conditions, we can show how the site-dependent structure at the stand level emerges from the asymmetric competition and mortality at the tree level and how the interplay changes with increasing site quality across Europe. Our most interesting finding was that the growth partitioning became more asymmetric and structuring with increasing site quality, but that the mortality eliminated predominantly small trees, reduced their size variation and thus reversed the impact of site quality on the structure. Finally, the reverse effects of mode of growth partitioning and mortality on the stand structure resulted in the highest size variation on poor sites and decreased structural heterogeneity with increasing site quality. Since our results indicate where heterogeneous structures need silviculture interventions and where they emerge naturally, we conclude that these findings may improve system understanding and modelling and guide forest management aiming at structurally rich forests.
dc.identifier.doi10.1016/j.foreco.2022.120365
dc.identifier.urihttps://vaseljena.ues.rs.ba/handle/123456789/117
dc.language.isoen
dc.publisherElsevier
dc.sourceForest Ecology and Management
dc.subjectAsymmetry of competition Size-dependent mortality Mode of competition Growth dominance coefficient Gini coefficient Structural heterogeneity
dc.titleWith increasing site quality asymmetric competition and mortality reduces Scots pine (Pinus sylvestris L.) stand structuring across Europe
dc.typeArticle
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Пољопривредни факултет [Научни радови] / Faculty of Agriculture [Scientific papers]