Sapwood Rings Estimation for Pinus Sylvestris L. In Lithuania and Latvia

Vitas, Adomas; Zunde, Māris

doi:10.3959/1536-1098-75.1.1

Cited by 6 publications

(7 citation statements)

References 12 publications

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“…Network sites cover different portions of the distribution range of each species (Figure 1). We relied on chronologies that were previously developed for dendroclimatological (Cedro, 2004;Cedro & Cedro, 2018;Helama, Sohar, Läänelaid, Bijak, & Jaagus, 2018;Jansons, Matisons, Šēnhofa, Katrevičs, & Jansons, 2016;Läänelaid, Sohar, & Meikar, 2008;Matisons, Elferts, & Brūmelis, 2013;Sohar, Vitas, & Läänelaid, 2012;Vitas, 2004Vitas, , 2006Vitas, , 2011 and dendroecological analyses (Scharnweber et al, 2011;Scharnweber, Manthey, & Wilmking, 2013;van der Maaten, Mehl, Wilmking, & van der Maaten-Theunissen, 2017;van der Maaten-Theunissen et al, 2016;Vitas & Zunde, 2019;Weigel et al, 2018), as well as chronologies from the International Tree-Ring Database (ITRDB; n = 42 sites) and chronologies not previously published (n = 42 sites; Table S1).…”

Section: Tree-ring Datamentioning

confidence: 99%

Tree growth influenced by warming winter climate and summer moisture availability in northern temperate forests

Harvey

Smiljanić

Scharnweber

et al. 2020

Global Change Biology

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146

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The role of future forests in global biogeochemical cycles will depend on how different tree species respond to climate. Interpreting the response of forest growth to climate change requires an understanding of the temporal and spatial patterns of seasonal climatic influences on the growth of common tree species. We constructed a new network of 310 tree‐ring width chronologies from three common tree species (Quercus robur, Pinus sylvestris and Fagus sylvatica) collected for different ecological, management and climate purposes in the south Baltic Sea region at the border of three bioclimatic zones (temperate continental, oceanic, southern boreal). The major climate factors (temperature, precipitation, drought) affecting tree growth at monthly and seasonal scales were identified. Our analysis documents that 20th century Scots pine and deciduous species growth is generally controlled by different climate parameters, and that summer moisture availability is increasingly important for the growth of deciduous species examined. We report changes in the influence of winter climate variables over the last decades, where a decreasing influence of late winter temperature on deciduous tree growth and an increasing influence of winter temperature on Scots pine growth was found. By comparing climate–growth responses for the 1943–1972 and 1973–2002 periods and characterizing site‐level growth response stability, a descriptive application of spatial segregation analysis distinguished sites with stable responses to dominant climate parameters (northeast of the study region), and sites that collectively showed unstable responses to winter climate (southeast of the study region). The findings presented here highlight the temporally unstable and nonuniform responses of tree growth to climate variability, and that there are geographical coherent regions where these changes are similar. Considering continued climate change in the future, our results provide important regional perspectives on recent broad‐scale climate–growth relationships for trees across the temperate to boreal forest transition around the south Baltic Sea.

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Section: Tree-ring Datamentioning

confidence: 99%

Tree growth influenced by warming winter climate and summer moisture availability in northern temperate forests

Harvey

Smiljanić

Scharnweber

et al. 2020

Global Change Biology

Self Cite

146

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“…Despite this, regional studies about sapwood statistics for pine are sparse if existing at all. For pine trees 100-200 years or older, there are often 50 to 85 sapwood rings [89], but extremes in the range from 30 to 120 sapwood rings have been noted in our review of the reports. An alternative method to estimate missing sapwood rings is to assume that the thickness of the sapwood appears constant for trees growing under similar ecological conditions, or for trees of similar ages and growth rates [90].…”

Section: Estimation Of the Felling Yearmentioning

confidence: 78%

How Cultural Heritage Studies Based on Dendrochronology Can Be Improved through Two-Way Communication

Edvardsson

Almevik

Lindblad

et al. 2021

Forests

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A significant part of our cultural heritage consists of wood. Research on historical wooden structures and artefacts thereby provides knowledge of people’s daily lives and the society in which they lived. Dendrochronology is a well-established dating method of wood that can also provide valuable knowledge about climate dynamics, environmental changes, silviculture, and cultural transformations. However, dendrochronology comes with some limitations that end users in cultural heritage sciences must be aware of, otherwise their surveys may not be ultimately performed. We have drawn attention to studies in which dendrochronological results have been misinterpreted, over-interpreted, or not fully utilized. On the other hand, a rigorous dendrochronological survey may not respond to the request of information in practice. To bridge this rigour-relevance gap, this article has considered and reviewed both the dendrochronology’s science-perspective and the practitioner’s and end user’s call for context appropriate studies. The material for this study consists of (i) interviews with researchers in dendrochronology and end users represented by cultural heritage researchers with focus on building conservation and building history in Sweden, and (ii) a review of dendrochronological reports and the literature where results from the reports have been interpreted. From these sources we can conclude that a continuous two-way communication between the dendrochronologists and end users often would have resulted in improved cultural heritage studies. The communication can take place in several steps. Firstly, the design of a sampling plan, which according to the current standard for sampling of cultural materials often is required, is an excellent common starting point for communication. Secondly, the survey reports could be developed with a more extensive general outline of the method and guidance in how to interpret the results. Thirdly, the potential contribution from dendrochronology is often underused, foreseeing historical information on local climate, silviculture, and choice of quality of the wooden resource, as the focus most often is the chronological dating. Finally, the interpretation of the results should consider all the available sources where dendrochronology is one stake for a conciliant conclusion.

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“…Although the climate-growth analysis did not show any significant differences between fire and non-fire years for the dry pine sites, there is evidence that fire occurrence is also related to climatic events [97,98]. The main causes for the reduced growth of tree rings (signature years) are climatic events such as droughts, winter temperatures, and spring frosts [99,100]. Studies on Scots pine with a master chronology from Lithuania found multiple years with significantly reduced growth [99,101].…”

Section: Dendrochronology Climate Change and Fire Riskmentioning

confidence: 82%

“…The main causes for the reduced growth of tree rings (signature years) are climatic events such as droughts, winter temperatures, and spring frosts [99,100]. Studies on Scots pine with a master chronology from Lithuania found multiple years with significantly reduced growth [99,101]. In our study, we identified multiple signature years on the dry Scots pine sites (1879, 1889, 1920, 1943-1944, 1979-1981, 1986-1987, 1993-1996, 2000-2001, and 2013) with reduced growth, of which some match (indicated in bold).…”

Section: Dendrochronology Climate Change and Fire Riskmentioning

confidence: 99%

Fire Occurrence in Hemi-Boreal Forests: Exploring Natural and Cultural Scots Pine Fire Regimes Using Dendrochronology in Lithuania

Manton

Ruffner

Kibirkštis

et al. 2022

Land

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Fire is an important natural disturbance and a driver of hemi-boreal forest successional trajectories, structural complexity, and biodiversity. Understanding the historic fire regime is an important step towards sustainable forest management. Focusing on Lithuania’s hemi-boreal forests, we first mapped the potential natural fire regimes based on the relationship between site conditions, vegetation, and fire frequency using the ASIO model. The ASIO model revealed that all the fire frequency categories (Absent, Seldom, Intermittent, Often) are found in Lithuania. Scots pine forests dominated the often fire frequency category (92%). Secondly, focusing on a fire-prone forest landscape, Dzūkija, we analyzed the fire occurrence of Scots pine forest types using dendrochronological records. We sampled and cross-dated 132 Scots pine samples with fire scars from four dry forest stands (n = 92) and four peatland forest stands (n = 40), respectively. In total, the fire history analysis revealed 455 fire scars and 213 fire events during the period of 1742–2019. The Weibull median fire intervals were 2.7 years (range 1–34) for the dry forest types and 6.3 years (range 1–27) for the peatland forest types. Analysis pre- and post-1950 showed the Weibull median fire interval increased from 2.2 to 7.2 for the dry forest types but decreased from 6.2 to 5.2. for the peatland forest types. A superposed epoch analysis revealed significant precipitation fluxes prior to the fire events after 1950. Thus, the Dzūkija landscape of Lithuania has been strongly shaped by both human and naturally induced fires. The combination of theory (the ASIO model) with the examination of biological archives can be used to help guide sustainable forest management to emulate forest disturbances related to fire. As traditional forest management focusing on wood production has eliminated fire, and effectively simplified forest ecosystems, we recommend introducing educational programs to communicate the benefits and history of forest fires as well as adaptive management trials that use low-intensity prescribed burning of Scots pine stands.

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Sapwood Rings Estimation for Pinus Sylvestris L. In Lithuania and Latvia

Cited by 6 publications

References 12 publications

Tree growth influenced by warming winter climate and summer moisture availability in northern temperate forests

Tree growth influenced by warming winter climate and summer moisture availability in northern temperate forests

How Cultural Heritage Studies Based on Dendrochronology Can Be Improved through Two-Way Communication

Fire Occurrence in Hemi-Boreal Forests: Exploring Natural and Cultural Scots Pine Fire Regimes Using Dendrochronology in Lithuania

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