A5000816938- Tree-ring climate responses
- Plant Water Relations and Carbon Dynamics
- Forest ecology and management
- Geology and Paleoclimatology Research
- Climate variability and models
- Hydrocarbon exploration and reservoir analysis
- Fire effects on ecosystems
- Geological Studies and Exploration
- Morphological variations and asymmetry
- Plant responses to elevated CO2
Siberian Federal University
2021-2024
Advanced Neural Dynamics (United States)
2024
Boreal regions are changing rapidly with anthropogenic global warming. In order to assess risks and impacts of this process, it is crucial put these observed changes into a long-term perspective. Summer air temperature variability can be well reconstructed from conifer tree rings. While the application stable isotopes potentially provide complementary climatic information over different seasons. study, we developed new triple isotope chronologies in tree-ring cellulose (δ13Ctrc, δ18Otrc,...
Dendroclimatic research offers insight into tree growth-climate response as a solution to the forward problem and provides reconstructions of climatic variables products reverse problem. Methodological developments in dendroclimatology have led inclusion variety growth parameters this field. Tree-ring traits developed during short time intervals growing season can potentially provide finer temporal scale both dendroclimatic applications offer better understanding mechanisms reaction...
Significant air temperature and precipitation changes have occurred since the 2000s in vulnerable Siberian subarctic regions urged updates of available chronologies towards third millennium. It is important to better understand recent climatic compared past decades, centuries even millennia. In this study, we present first annually resolved triple tree-ring isotope dataset (δ13C, δ18O δ2H) for eastern part Taimyr Peninsula (TAY) northeastern Yakutia (YAK) from 1900 2021. We found that novel...
Quantitative wood anatomy (QWA) is widely used to resolve a fundamental problem of tree responses past, ongoing and forecasted climate changes. Potentially, QWA data can be considered as new proxy source for long-term reconstruction with higher temporal resolution than traditional dendroclimatic data. In this paper, we tracheidogram set two interconnected variables describing the dynamics seasonal variability in radial cell size wall thickness conifer trees. We 1386 profiles (tracheidograms)...
Siberian pine (Pinus sibirica Du Tour) is a widespread and long-lived species in the northern hemisphere, which makes it good potential proxy for climatic data. However, tree-ring growth of this weakly correlates with conditions, prevents its use dendroclimatic reconstruction. It was proposed to measurements tracheid characteristics as model predictors reconstruct smoothed temperature key periods tree growth. In study, algorithms preprocessing tracheids data, well cross-validation, were...
The current lack of information on past summer sunshine duration variability from annually resolved palaeoclimatological archives is hindering progress in the understanding and modelling earth climate system. We show that a combination tree-ring carbon oxygen isotopes Siberia provides robust duration, which we use then for an annual 1,505-year reconstruction July (1,5K-SIB-JSDR). found Medieval maximum 56% higher than average over 1,505 years. Rapid drastic decreases up to 60% correspond...
The current lack of information on past summer sunshine duration variability from annually resolved palaeoclimatological archives is hindering progress in the understanding and modelling earth climate system. We show that a combination tree-ring carbon oxygen isotopes Siberia provides robust duration, which we use for an annual 1505-year reconstruction July (1,5K-SIB-JSDR). found Medieval maximum 56 % higher than average over 1505 years. Rapid drastic decreases up to 60 correspond major...
Global climatic changes have been observed for all natural biomes, with the greatest impact in permafrost zone. The short series of direct observations air temperature and precipitation from meteorological stations this territory make it difficult to use them studies climate change on forest forest-tundra ecosystems, but only longer gridded data expand temporal-spatial resolution analysis. We compared local temperature, vapor pressure deficit (VPD) data, analyzed trends their over last...
Boreal regions are strongly affected by climatic changes, and it is important to put these changes into a long-term perspective. Summer air temperature variability well recorded in conifer tree rings, but much less information available on other climate variables, like vapor pressure deficit, precipitation sunshine duration. Potentially, the application of stable isotopes rings can provide complementary over different seasons.In this study, we developed new triple isotope chronologies...
A theoretical and experimental verification of a simple hypothesis was carried out in this study to determine if features the anatomical structure coniferous annual rings (in case pine trees from moisture-deficient growth conditions steppe zone) quantified tracheidograms can be used reconstruct kinetics seasonal growth. During two sharply different seasons, sampling performed periodically, tree measured where forming ring separated into zones (cambium, extension zone, zone cell wall...
Classical tree-ring parameters like width, maximum latewood density and cell wall thickness record summer air temperature at high latitudes well allow for the reconstruction of over centuries millennia. However, information about other climatic factors (e.g. moisture sunshine duration) is limited in these proxies, especially temperature-limited environments subarctic forests growing on permafrost soils. The application stable hydrogen oxygen isotopes can provide complementary changes solar...
<p>In the work, a simple hypothesis was tested: whether treats of anatomical tree-ring structure conifer (i.e. tracheidograms rings) can be used for reconstruction seasonal growth kinetics. Using example two sharply different growing seasons during which annual rings measured with periodic sampling and dividing forming ring into zones (cambium, enlargement zone, cell wall thickening zone matured tracheids) final tracheidograms, scheme recalculating variability radial size...
<p>Rapid temperature and vapor pressure deficit (VPD) increase along with precipitation decrease over the past decades lead to massive wildfires permafrost degradation in boreal forests. Conifer trees growing subarctic regions are highly sensitive these climatic changes due their location at high latitudes, where air is limiting factor, but also water relations have a strong impact on tree growth.</p><p>In this study, we aimed (i) assess usability of...