Pollen-Derived Paleovegetation Reconstruction and Long-Term Carbon Accumulation at a Fen Site in the Attawapiskat River Watershed, Hudson Bay Lowlands, Canada

摘要: Abstract The Hudson Bay Lowlands (HBL) constitute a globally significant carbon pool; the paleoecological record provides an opportunity to investigate long-term drivers of change in accumulation and related changes vegetation. We present Holocene from Victor Fen site (VM-3-3) Ontario's HBL reconstruct vegetation history, quantify rates accumulation, determine role paleoclimatic drivers. Pollen analysis indicates initiation peat over mineral substrate, accompanied by relatively rapid following emergence Tyrrell Sea ∼6900 yrs BP. earliest assemblage consisted tidal marsh, quickly succeeding Typha then poor fen dominated Sphagnum Cyperaceae 6400 Rapid isostatic uplift at time likely contributed these changes. Once established, this community persisted without major until most recent century, when abundance...