scholarly journals Tree-ring density and carbon isotope composition are early-warning signals of drought-induced mortality in the drought tolerant Canary Island pine

2021 ◽  
Vol 310 ◽  
pp. 108634
Author(s):  
Rosana López ◽  
Francisco Javier Cano ◽  
Jesús Rodríguez-Calcerrada ◽  
Gabriel Sangüesa-Barreda ◽  
Antonio Gazol ◽  
...  
Keyword(s):  
Carbon Isotope ◽  
Tree Ring ◽  
Early Warning ◽  
Canary Island ◽  
Isotope Composition ◽  
Carbon Isotope Composition ◽  
Warning Signals ◽  
Early Warning Signals ◽  
Ring Density ◽  
Drought Tolerant

TREE-RING WIDTH AND STABLE CARBON ISOTOPE COMPOSITION OF JAPANESE CYPRESS IN THE LAKE BIWA AREA, CENTRAL JAPAN, AND THEIR HYDROLOGIC AND CLIMATIC IMPLICATIONS

IAWA Journal ◽  
2009 ◽  
Vol 30 (4) ◽  
pp. 395-406 ◽  
Author(s):  
Kenjiro Sho ◽  
Hiroshi Aoki Takahashi ◽  
Hiroshi Miyai ◽  
Shuichi Ikebuchi ◽  
Toshio Nakamura
Keyword(s):  
Carbon Isotope ◽  
Tree Ring ◽  
Lake Biwa ◽  
Isotope Composition ◽  
Stable Carbon Isotope ◽  
Ring Width ◽  
Early Summer ◽  
Carbon Isotope Composition ◽  
Central Japan ◽  
Japanese Cypress

Chronologies of tree-ring width and stable carbon isotope composition of Japanese cypress were developed to help reconstruct a 300-year record of past hydrologic and climatic environments in the Lake Biwa area, central Japan. Site chronologies were built with 37 trees for ring width and four trees for carbon isotope composition, respectively. Correlation analysis with monthly climatic data revealed that radial growth of the trees is related to temperature in early spring, precipitation (or number of precipitation days) in early summer and precipitation in previous-year summer to autumn. Tree-ring cellulose carbon isotopic composition is correlated most significantly with the number of precipitation days in early summer months. Consequently, a chronology of the number of precipitation days in May was reconstructed by multiple regression analysis with ring-width and carbon-isotope predictors and was validated by comparison with the recent observed record.

scholarly journals Carbon Isotopes of Riparian Forests Trees in the Savannas of the Volta Sub-Basin of Ghana Reveal Contrasting Responses to Climatic and Environmental Variations

Forests ◽  
2019 ◽  
Vol 10 (3) ◽  
pp. 251 ◽  
Author(s):  
Emmanuel Boakye ◽  
Aster Gebrekirstos ◽  
Dibi Hyppolite ◽  
Victor Barnes ◽  
Stefan Porembski ◽  
...  
Keyword(s):  
Climate Change ◽  
Stable Isotopes ◽  
Carbon Isotope ◽  
Tree Ring ◽  
Isotope Composition ◽  
Carbon Isotope Composition ◽  
Riparian Forests ◽  
Δ13c Values ◽  
Riparian Trees ◽  
Species Specific

Stable isotopes of tree rings are frequently used as proxies in climate change studies. However, species-specific relationships between climate and tree-ring stable isotopes have not yet been studied in riparian forests in the savannas of West Africa. Four cross-dated discs, each of Afzelia africana Sm. (evergreen) and Anogeissus leiocarpus (DC.) Guill. & Perr. (deciduous) in the humid (HSZ) and dry (DSZ) savanna zones of the Volta basin in Ghana were selected from a larger tree-ring dataset to assess the relationships between the tree-ring carbon isotope composition (δ13C values) and climatic parameters. The atmospherically corrected δ13C values of both studied species showed that A. africana was enriched in 13C compared to A. leiocarpus. Strong correlations were found between δ13C values of A. africana and A. leiocarpus with temperature, but weak correlations with precipitation. Spatial correlation analysis revealed significant relationships between δ13C values of both tree species and Sea Surface Temperatures in the Gulf of Guinea in the southern Atlantic Ocean. The results suggest that the carbon isotope composition of riparian trees in the Volta river basin has a potential to reconstruct climate variability and to assess tree ecological responses to climate change.

The influence of hydrodynamics on the carbon isotope composition of inorganically precipitated calcite

2021 ◽  
Vol 565 ◽  
pp. 116932
Author(s):  
Hao Yan ◽  
Wolfgang Dreybrodt ◽  
Huiming Bao ◽  
Yongbo Peng ◽  
Yu Wei ◽  
...  
Keyword(s):  
Carbon Isotope ◽  
Isotope Composition ◽  
Carbon Isotope Composition
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