| Title | Underestimation of the Tambora effects in North American taiga ecosystems |
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| Author | Gennaretti, F; Boucher, E; Nicault, A; Gea-Izquierdo, G; Arseneault, D; Berninger, F; Savard, M M ; Bégin, C; Guiot, J |
| Source | Environmental Research Letters vol. 13, no. 3, 034017, 2018 p. 1-13, https://doi.org/10.1088/1748-9326/aaac0c  Open Access |
| Image |  |
| Year | 2018 |
| Alt Series | Natural Resources Canada, Contribution Series 20182303 |
| Publisher | IOP Publishing |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf; html |
| Province | Quebec; Newfoundland and Labrador; Ontario; Manitoba |
| NTS | 12; 13; 14; 21; 22; 23; 24; 31; 32; 33; 34; 41; 42; 43; 44; 52; 53; 54 |
| Area | Labrador |
| Lat/Long WENS | -95.0000 -60.0000 59.0000 45.0000 |
| Subjects | environmental geology; geochemistry; tectonics; Nature and Environment; Science and Technology; dendrochronology; stable isotope studies; oxygen isotopes; carbon isotopes; ecosystems; tectonic history;
volcanism; climatology; climate effects; meteorology; vegetation; anomalies; 1815 Tambora Volcano eruption; Taiga Shield Ecozone; Climate change; cumulative effects; Forests; Trees |
| Illustrations | location maps; time series; tables; models; geoscientific sketch maps; profiles; bar graphs; plots |
| Program | Environmental Geoscience
Sources |
| Released | 2018 02 23 |
| Abstract | The Tambora eruption (1815 AD) was one of the major eruptions of the last two millennia and has no equivalents over the last two centuries. Here, we collected an extensive network of early
meteorological time series, climate simulation data and numerous, well-replicated proxy records from Eastern Canada to analyze the strength and the persistence of the Tambora impact on the regional climate and forest processes. Our results show that
the Tambora impacts on the terrestrial biosphere were stronger than previously thought, and not only affected tree growth and carbon uptake for a longer period than registered in the regional climate, but also determined forest demography and
structure. Increased tree mortality, four times higher than the background level, indicates that the Tambora climatic impact propagated to influence the structure of the North American taiga for several decades. We also show that the Tambora signal
is more persistent in observed data (temperature, river ice dynamics, forest growth, tree mortality) than in simulated ones (climate and forest-growth simulations), indicating that our understanding of the mechanisms amplifying volcanic perturbations
on climates and ecosystems is still limited, notably in the North American taiga. |
| GEOSCAN ID | 310878 |
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