Holocene climate history of the Nunatsiavut (northern Labrador, Canada) established from pollen and dinoflagellate cyst assemblages covering the past 7000 years

This study documents the past ~7000 years of Holocene climatic history for Labrador and Nunatsiavut, using a sedimentary sequence of more than 8 m retrieved in Nachvak fjord, one of the northernmost fjords of Nunatsiavut. Using a multi-proxy approach combining a solid Accelerator Mass Spectrometry (AMS)- 14 C chronology and the fossil assemblages of pollen grains and dinoflagellate cysts (dinocysts), we were able to compare terrestrial and marine records in an effort to obtain a better understanding of the mid- to late-Holocene climate history of the Nunatsiavut. Records begin at the end of the deglaciation and showed a general delay in the sequence of climate events which followed, both in terrestrial and marine realms. The presence of Pentapharsodinium dalei in great abundance in Nachvak Fjord revealed a strong influence of the North Atlantic Ocean and the Labrador Sea until ~3000 yr BP. Afterward, its rather fast disappearance marked the increased influence of Arctic waters. The last 1000 years show climate stability in the region over the marine realm and a cooling trend over terrestrial landscapes

Arctic · Climate change · Deglaciation · Dinoflagellate · Fjord · Geography · Holocene · Physical geography · Pollen · Geology and Paleoclimatology Research · Isotope Analysis in Ecology · Methane Hydrates and Related Phenomena · Ecology · Geology · Oceanography

• Historical Perspectives on Exceptional Climatic Years at the Labrador/Nunatsiavut Coast 1780 to 1950

  Open Access•Marie‐Michèle Ouellet‐Bernier, Anne De Vernal et al.•Quaternary Research•2021

  Incluir item

• Evaluation of organic-walled dinoflagellate cyst distributions in coastal surface sediments of the China Seas in relation with hydrographic conditions for paleoceanographic reconstruction

  Open Access•Zhen Li, Vera Pospelova et al.•Quaternary International•2023

  Incluir item

• Spatial and temporal variability of Holocene temperature in the North Atlantic region

  Open Access•Michael R Kaplan, Alexander P Wolfe•Quaternary Research•2006

  Incluir item

• A Proposed Diachronic Revision of Late Quaternary Time-Stratigraphic Classification in the Eastern and Northern Great Lakes Area

  Open Access•Paul F Karrow, Aleksis Dreimanis et al.•Quaternary Research•2000

  Incluir item

• Late Quaternary Temporal and Event Classifications, Great Lakes Region, North America

  Open Access•W Hilton Johnson, Ardith K Hansel et al.•Quaternary Research•1997

  Incluir item

• Holocene thermal maximum in the western Arctic (0–180°W)

  Open Access•D S Kaufman, Thomas A Ager et al.•Quaternary Science Reviews•2004

  Incluir item

• The spatial and temporal complexity of the Holocene thermal maximum

  Open Access•Hans Renssen, Heikki Seppä et al.•Nature Geoscience•2009

  Incluir item

• An outline of North American deglaciation with emphasis on central and northern Canada

  Open Access•Arthur S Dyke•Developments in Quaternary Sciences•2004

  Incluir item

• Forcing of the cold event of 8,200 years ago by catastrophic drainage of Laurentide lakes

  Open Access•Donald C Barber, A S Dyke et al.•Nature•1999

  Incluir item

• Gradistat

  Open Access•Simon J Blott, Ken Pye et al.•Earth Surface Processes and…•2001

  Incluir item

• Formal ratification of the Quaternary System/Period and the Pleistocene Series/Epoch with a base at 2.58 Ma

  Open Access•Philip L Gibbard, Martin J Head et al.•Journal of Quaternary Science•2010

  Incluir item

• A Reconstruction of Regional and Global Temperature for the Past 11,300 Years

  Open Access•Shaun A Marcott, Jeremy D Shakun et al.•Science•2013

  Incluir item

• Global Glacial Isostasy and the Surface of the Ice-Age Earth

  W R Peltier•Annual Review of Earth and…•2004

  Incluir item

• Late-Holocene sea-surface conditions offshore Newfoundland based on dinoflagellate cysts

  Open Access•Sandrine Solignac, Marit-Solveig Seidenkrantz et al.•The Holocene•2011

  Incluir item

• Comparison of marine and terrestrial Holocene climatic reconstructions from northeastern North America

  Open Access•Masato Sawada, Konrad Gajewski et al.•The Holocene•1999

  Incluir item

• Reconstruction of the late-Holocene changes in the Sub-Arctic Front position at the Reykjanes Ridge, north Atlantic

  Open Access•Matthias Moros, Eystein Jansen et al.•The Holocene•2012

  Incluir item

• Holocene climatic records from Agassiz Ice Cap, Ellesmere Island, NWT, Canada

  Open Access•David Fisher, David A Fisher et al.•The Holocene•1995

  Incluir item

• IntCal13 and Marine13 Radiocarbon Age Calibration Curves 0–50,000 Years cal BP

  Open Access•Paula J Reimer, Edouard Bard et al.•Radiocarbon•2013

  Incluir item

• Prehistoric cultures, reconstructed coasts

  Trevor Bell, M A P Renouf•World Archaeology•2004

  Incluir item

• World Survey of Climatology

  Open Access•H P Bailey, H E Landsberg et al.•Geographical Review•1975

  Incluir item