Postglacial vegetation migration facilitated by outposts on proglacial lake islands in eastern North America

Vogel, Marianne F.S.; Ali, Adam A.; Joannin, Sébastien; Bergeron, Yves; Asselin, Hugo

doi:10.1016/j.qsa.2024.100164

Quaternary Science Advances

2024

DOI: 10.1016/j.qsa.2024.100164

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Postglacial vegetation migration facilitated by outposts on proglacial lake islands in eastern North America

Marianne F.S. Vogel,

Adam A. Ali,

Sébastien Joannin

et al.

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2024

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Cited by 3 publications

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Multi‐proxy analysis of early Holocene vegetation dynamics on the islands of proglacial Lake Ojibway (northeastern America)

Vogel,

Joannin,

Lamara

et al. 2024

J Quaternary Science

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Following deglaciation, lowland sites in eastern Canada that were covered by proglacial Lake Ojibway recorded direct afforestation with boreal mixedwood taxa, without an initial tundra phase, contrary to sites that were never covered by this lake. Because former islands of proglacial Lake Ojibway were colonized by vegetation before lake drainage around 8200 cal a bp, we hypothesized that these paleo‐islands went through a non‐arboreal phase which eventually transitioned to boreal mixedwoods, hence providing a source of propagules for rapid and later colonization of the lowlands. We carried out a multi‐proxy analysis combining pollen, macro‐remains, sedimentary ancient DNA and charcoal to document vegetation composition and dynamics on two paleo‐islands. Both study sites recorded progressive vegetation establishment starting with a tundra‐like phase with only herbs and shrubs, followed by open forests dominated by either larch or pine, culminating with the establishment of the boreal mixedwoods about 300 years before the final drainage of proglacial Lake Ojibway. Fire regimes seem to have partially driven vegetation dynamics and diversity on the paleo‐islands. Paleo‐islands were sources of propagules, which helps explain how the former Lake Ojibway lowlands were directly colonized by boreal mixedwoods, without an initial tundra phase.

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Multi‐proxy analysis of early Holocene vegetation dynamics on the islands of proglacial Lake Ojibway (northeastern America)

Vogel,

Joannin,

Lamara

et al. 2024

J Quaternary Science

View full text Add to dashboard Cite

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Implications of Geochemical Variables and Magnetic Susceptibility on Carbonate Levels in El-Guettiate Sebkha, Tunisia—Insights into Climate Cycles

Bouabid,

Srarfi,

Tagorti

2024

Carbonates Evaporites

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Increase in young forests, more than climate change may accelerate future colonization of temperate tree species in mixedwood boreal stands

Soubeyrand,

Gennaretti,

Brice

et al. 2024

Ecological Modelling

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Postglacial vegetation migration facilitated by outposts on proglacial lake islands in eastern North America

Cited by 3 publications

References 47 publications

Multi‐proxy analysis of early Holocene vegetation dynamics on the islands of proglacial Lake Ojibway (northeastern America)

Multi‐proxy analysis of early Holocene vegetation dynamics on the islands of proglacial Lake Ojibway (northeastern America)

Implications of Geochemical Variables and Magnetic Susceptibility on Carbonate Levels in El-Guettiate Sebkha, Tunisia—Insights into Climate Cycles

Increase in young forests, more than climate change may accelerate future colonization of temperate tree species in mixedwood boreal stands

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