Publication Abstracts

Larose et al. 2024

Larose, J., É. Boucher, A. de Vernal, I. Hermoso de Mendoza, F. Gennaretti, A. Lavergne, L. Andreu-Hayles, and R.D. Field, 2024: Labrador Sea's influence on black spruce forests: Insights from tree-ring stable oxygen isotopes. Commun. Earth Environ., 5, 108, doi:10.1038/s43247-024-01271-4.

In eastern Canada, Black spruce (Picea mariana Mill. B.S.P.) grows in a wide variety of climates, from maritime-oceanic conditions near the Labrador Sea, to more continental climates, inland. Along this gradient, timing and provenance of heat and moisture that support growth are uncertain, weakening our capacity to predict the response of boreal ecosystems to climate variability. Here, we measured the stable oxygen isotopic composition of black spruce tree-ring cellulose at three sites in eastern Canada and provide evidence of a rapid decrease of Labrador Sea's influence on adjacent ecosystems. Our results report a landwards decrease in the oxygen isotope composition of both tree-ring cellulose (δ18OTRC) and precipitation water (δ18Op). We also reveal a rapid landwards decoupling between δ18OTRC variability (1950-2013), maximum temperature and Sea Surface Temperature variations over the Northwest Atlantic. Thus, despite their apparent ecological homogeneity, eastern Canada's black spruce ecosystems rely on heterogeneous sources of heat and moisture.

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BibTeX Citation

@article{la02600k,
  author={Larose, J. and Boucher, É. and de Vernal, A. and Hermoso de Mendoza, I. and Gennaretti, F. and Lavergne, A. and Andreu-Hayles, L. and Field, R. D.},
  title={Labrador Sea's influence on black spruce forests: Insights from tree-ring stable oxygen isotopes},
  year={2024},
  journal={Communications Earth and Environment},
  volume={5},
  pages={108},
  doi={10.1038/s43247-024-01271-4},
}

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RIS Citation

TY  - JOUR
ID  - la02600k
AU  - Larose, J.
AU  - Boucher, É.
AU  - de Vernal, A.
AU  - Hermoso de Mendoza, I.
AU  - Gennaretti, F.
AU  - Lavergne, A.
AU  - Andreu-Hayles, L.
AU  - Field, R. D.
PY  - 2024
TI  - Labrador Sea's influence on black spruce forests: Insights from tree-ring stable oxygen isotopes
JA  - Commun. Earth Environ.
JO  - Communications Earth and Environment
VL  - 5
SP  - 108
DO  - 10.1038/s43247-024-01271-4
ER  -

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