Recent advances in long-term climate and moisture reconstructions from the Baltic region: Exploring the potential for a new multi-millennial tree-ring chronology

Edvardsson, Johannes; Corona, Christophe; Mažeika, Jonas; Pukienė, Rūtilė; Stoffel, Markus

doi:10.1016/j.quascirev.2015.11.005

Cited by 15 publications

(16 citation statements)

References 39 publications

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“…In addition, the northern location of the Finnish site has possibly made the trees more sensitive to temperature variability in comparison to the Lithuanian sites, which at present show tree-growth response associated to a mixture of pre-growth season temperature and long-term hydrological changes (Edvardsson et al, 2015). We concur with the previously set target for developing continuous annually resolved moisture-sensitive tree-ring records for the same region (Edvardsson et al, 2016). Extending these chronologies will detail the picture of hydroclimate anomalies over the Holocene.…”

Section: Discussionsupporting

confidence: 87%

“…In a larger regional view, our tree-ring chronology of peatland pines can be compared with those previously established in Lithuania (Pukienė, 1997(Pukienė, , 2001Edvardsson et al, 2016) (see Figure 1). Overlapping with our data, the radiocarbon dated pine chronology from a Lithuanian site Užpelkių Tyrelis (Pukienė, 1997) spanned approximately AD 951-1148, thus coinciding markedly with the maximum phase of peatland pines in Finland.…”

Section: Discussionmentioning

confidence: 99%

“…However, the other radiocarbon-dated chronologies from Lithuania span approximately AD 636-956 (Edvardsson et al, 2016), AD 551-837, AD 1143-1474, and AD 1773-1924(Pukienė, 1997, and thus with no meaningful overlaps with the Finnish peatland pine chronology. These discrepancies may imply spatially restricted responses in hydrological cycle, peatland vegetation, or both, to climatic shifts of continental scale.…”

Section: Discussionmentioning

confidence: 99%

“…(Luoto, 2009;Nevalainen et al, 2011;Nevalainen and Luoto, 2012). Lit-1 and Lit-2 are tree-ring sites studied by Pukienė (1997) and Edvardsson et al (2016), respectively.…”

Section: Tree-ring Datamentioning

confidence: 99%

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Rereading a tree-ring database to illustrate depositional histories of subfossil trees

Helama

Luoto

Nevalainen

et al. 2017

Palaeontologia Electronica

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Section: Discussionsupporting

confidence: 87%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…(Luoto, 2009;Nevalainen et al, 2011;Nevalainen and Luoto, 2012). Lit-1 and Lit-2 are tree-ring sites studied by Pukienė (1997) and Edvardsson et al (2016), respectively.…”

Section: Tree-ring Datamentioning

confidence: 99%

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Rereading a tree-ring database to illustrate depositional histories of subfossil trees

Helama

Luoto

Nevalainen

et al. 2017

Palaeontologia Electronica

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“…In northwest Germany, extensive work on peatland pines have been performed (Leuschner et al, 2007;Eckstein et al, 2009Eckstein et al, , 2011, with overlapping chronologies reaching back to 6703 BCE (Achterberg et al, 2018). In Scandinavia and the Baltic countries, pine represents the most common tree species used for dendrochronological studies based on subfossil trees (Pukienë, 1997;Gunnarson, 1999;Helama et al, 2008;Edvardsson et al, 2012aEdvardsson et al, , 2016b. In central and southern Sweden, peatland pines have been used to develop several multi-millennial tree-ring chronologies (Gunnarson, 1999(Gunnarson, , 2008Edvardsson et al, 2012a,b;Edvardsson, 2016).…”

Section: Historical Overview-studies Of Environmental Changes and Cli...mentioning

confidence: 99%

The Integrated Use of Dendrochronological Data and Paleoecological Records From Northwest European Peatlands and Lakes for Understanding Long-Term Ecological and Climatic Changes—A Review

et al. 2022

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Our overall understanding of long-term climate dynamics is largely based on proxy data generated from archives such as ice cores, ocean sediments, tree rings, speleothems, and corals, whereas reconstructions of long-term changes in vegetation and associated climate during the Holocene are largely based on paleoecological records from peat and lake sequences, primarily pollen and plant macrofossil data. However, since no proxy can provide a complete picture of the past, it is important to integrate different types of data, and to use methods that can support the paleoecological and paleoclimatic interpretations. Here we review how tree-ring data and dendrochronological approaches can be integrated with stratigraphic records to provide complementary paleoecological and paleoclimatic information. The review includes multiproxy studies in which dendrochronological data have been either compared or integrated with stratigraphic records, mainly pollen records, with the aim to contribute to a better understanding of long-term ecosystem and climate dynamics. We mainly focus on studies from northwest Europe in which tree-ring data and at least one type of paleoecological proxy record from the same site or area has been either compared or integrated. We find that integration of dendrochronological data and paleoecological records from peat and lake sequences is a powerful but underutilized approach to reconstruct long-term ecological and climatic changes. One likely reason for its limited use is the contrasting character of the two categories of data, including their different time resolution and occurrence, making them difficult to integrate. For example, subfossil wood providing annual dendrochronological data usually only occurs sporadically in peat and lake sediments, and the presence/absence of the trees are normally expected to be recorded in the pollen data with multi-decadal or coarser resolution. Therefore, we also discuss methods to compare and integrate dendrochronological and stratigraphic records, as well as the relevant paleoecological and paleoclimatic information provided by dendrochronology, pollen, and peat stratigraphy, with the aim to facilitate new multi-proxy initiatives that will contribute to a better understanding of long-term ecosystem and climate dynamics and thereby a firmer basis for future nature conservation initiatives.

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Subfossil peatland trees as proxies for Holocene palaeohydrology and palaeoclimate

Edvardsson¹,

Stoffel

Corona

et al. 2016

Earth-Science Reviews

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1Due to the scarcity of reliable and highly resolved moisture proxies covering much of the 2 Holocene, there has been increased interest in the study of living and subfossil peatland trees 3 sensitive to gradual and extreme changes in hydrology, precipitation, and related environmental 4 processes. Peatland development and the associated carbon accumulation, which are strongly 5 influenced by hydrological fluctuations, are also of prime importance as peatlands represent long-6 term sinks of atmospheric carbon. Improved knowledge of peatland development and soil 7 moisture variability during the Holocene is therefore essential to our understanding of long-term 8 hydroclimate changes, the terrestrial carbon cycle, and to enable more robust predictions of 9 peatland response to future climate changes. 10Here, we review the existing mid-to late Holocene peatland tree-ring chronologies that 11 have been used to study climate variability on (sub-)annual to centennial scales with a primary 12 focus on northern Europe. Since the 1970s, absolutely dated tree-ring chronologies covering 13 substantial parts of the Holocene have been developed from excavated remains of oak (Quercus 14 spp.) and pine (Pinus sylvestris L.). The annual tree-ring patterns of these trees are often 15 characterized by periods of depressed growth reflecting annual to decadal hydroclimatic changes. 16In addition, changes in the spatio-temporal distribution of trees throughout the Holocene are often 17 found to reflect decadal to centennial climate and hydrological changes. Moreover, synchronicity 18 between tree-ring chronologies and tree-population dynamics over larger geographical areas 19 show periods of coherent regional climate forcing, especially during the mid-Holocene. 20This review (i) provides an overview of pioneering and recent studies presenting tree-ring 21 chronologies developed from subfossil peatland trees, and (ii) presents recent developments in the 22 fields of dendroecology (i.e. the response of tree growth and changes in vitality as a result of 23 changes in climatic variables) and dendroclimatology (i.e. the reconstruction of climate 24 4 fluctuations based on tree-ring analyses) in peatland regions. Moreover, we (iii) use long-term 25 climate reconstructions based on alternative proxies for comparison, and (iv) present different 26 ways to analyse tree-ring records to generate novel information on annual to centennial 27 timescales. This analysis is based on an unprecedented network of tree-ring chronologies from 28 Denmark, Finland, Germany, Great Britain, Ireland, Lithuania, the Netherlands, Poland, Sweden, 29and Canada, as well as a wealth of old and previously (un) published literature from Scandinavia 30 and Germany, which has not been accessible to a wider audience in the past due to inaccessibility 31 or linguistic barriers. Finally, a map of possible hotspots for the assessment of continuous 32 peatland-tree studies is presented, along with suggestions for new research directions in the field. 33 34

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Recent advances in long-term climate and moisture reconstructions from the Baltic region: Exploring the potential for a new multi-millennial tree-ring chronology

Cited by 15 publications

References 39 publications

Rereading a tree-ring database to illustrate depositional histories of subfossil trees

Rereading a tree-ring database to illustrate depositional histories of subfossil trees

The Integrated Use of Dendrochronological Data and Paleoecological Records From Northwest European Peatlands and Lakes for Understanding Long-Term Ecological and Climatic Changes—A Review

Subfossil peatland trees as proxies for Holocene palaeohydrology and palaeoclimate

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