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Combining multiple proxies to investigate water table fluctuations in wetlands : A case study from the Rėkyva wetland complex, Lithuania

Taminskas, Julius; Edvardsson, Johannes LU ; Linkevičienė, Rita; Stoffel, Markus; Corona, Christophe and Tamkevičiūtė, Marija (2019) In Palaeogeography, Palaeoclimatology, Palaeoecology 514. p.453-463
Abstract

The impact climate and land-use changes have on the hydrological conditions in peat bogs and lakes is often complex, but of great importance for the carbon budget and biodiversity in these ecosystems. Links and feedbacks between raised bog water table depth, lake level, net precipitation, hydrometeorological indices, and radial tree growth have been studied and identified in the Rėkyva wetland complex, Lithuania. Moreover, several statistically significant correlations between raised bog water table depths, lake level, local river runoff, and tree growth were observed. The changes of raised bog water table, lake level, and tree growth show synchronous trends despite variations in the absolute values. Our results show decreasing water... (More)

The impact climate and land-use changes have on the hydrological conditions in peat bogs and lakes is often complex, but of great importance for the carbon budget and biodiversity in these ecosystems. Links and feedbacks between raised bog water table depth, lake level, net precipitation, hydrometeorological indices, and radial tree growth have been studied and identified in the Rėkyva wetland complex, Lithuania. Moreover, several statistically significant correlations between raised bog water table depths, lake level, local river runoff, and tree growth were observed. The changes of raised bog water table, lake level, and tree growth show synchronous trends despite variations in the absolute values. Our results show decreasing water table in the Rėkyva wetland complex over the last 100 years, especially in the middle of the 20th century. This study also shows a potential for reconstructing water table fluctuations in wetland complexes using multi-indicator approaches. Our observations and reconstruction show consistency with several regional studies and reconstructions of moisture variations in Baltic raised bogs, at least for periods without strong anthropogenic influences.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Climate change, Raised bog water table, Seepage lakes, Tree-ring, Wetland hydrology
in
Palaeogeography, Palaeoclimatology, Palaeoecology
volume
514
pages
11 pages
publisher
Elsevier
external identifiers
  • scopus:85056530919
ISSN
0031-0182
DOI
10.1016/j.palaeo.2018.11.004
language
English
LU publication?
yes
id
2caa8548-b854-49c1-8edc-3b751f2a32ea
date added to LUP
2018-11-26 12:37:05
date last changed
2018-11-26 12:37:05
@article{2caa8548-b854-49c1-8edc-3b751f2a32ea,
  abstract     = {<p>The impact climate and land-use changes have on the hydrological conditions in peat bogs and lakes is often complex, but of great importance for the carbon budget and biodiversity in these ecosystems. Links and feedbacks between raised bog water table depth, lake level, net precipitation, hydrometeorological indices, and radial tree growth have been studied and identified in the Rėkyva wetland complex, Lithuania. Moreover, several statistically significant correlations between raised bog water table depths, lake level, local river runoff, and tree growth were observed. The changes of raised bog water table, lake level, and tree growth show synchronous trends despite variations in the absolute values. Our results show decreasing water table in the Rėkyva wetland complex over the last 100 years, especially in the middle of the 20th century. This study also shows a potential for reconstructing water table fluctuations in wetland complexes using multi-indicator approaches. Our observations and reconstruction show consistency with several regional studies and reconstructions of moisture variations in Baltic raised bogs, at least for periods without strong anthropogenic influences.</p>},
  author       = {Taminskas, Julius and Edvardsson, Johannes and Linkevičienė, Rita and Stoffel, Markus and Corona, Christophe and Tamkevičiūtė, Marija},
  issn         = {0031-0182},
  keyword      = {Climate change,Raised bog water table,Seepage lakes,Tree-ring,Wetland hydrology},
  language     = {eng},
  pages        = {453--463},
  publisher    = {Elsevier},
  series       = {Palaeogeography, Palaeoclimatology, Palaeoecology},
  title        = {Combining multiple proxies to investigate water table fluctuations in wetlands : A case study from the Rėkyva wetland complex, Lithuania},
  url          = {http://dx.doi.org/10.1016/j.palaeo.2018.11.004},
  volume       = {514},
  year         = {2019},
}