Life and times of the Bering land bridge

  title={Life and times of the Bering land bridge},
  author={Scott A. Elias and Susan K. Short and Charles H. Nelson and Hilary H. Birks},
UNDERSTANDING the environment of the Bering land bridge and determining the timing of late Wisconsin inundation are important for several areas of study. These include: (1) the timing of the re-establishment of circulation between Pacific and Atlantic Oceans; (2) the timing of development of a northern biotic refugium and the closing of the bridge to species immigration; (3) Palaeoindian migration routes; and (4) palaeotopographic data for atmospheric general circulation models1. Late Wisconsin… Expand
Post-glacial flooding of the Bering Land Bridge dated to 11 cal ka BP based on new geophysical and sediment records
Abstract. The Bering Strait connects the Arctic and Pacific oceans and separates the North American and Asian landmasses. The presently shallow ( ∼  53 m) strait was exposed during the sea levelExpand
A new terrestrial palaeoenvironmental record from the Bering Land Bridge and context for human dispersal
It is found that the timing of the earliest unequivocal human dispersals into Alaska, based on archaeological evidence, corresponds with a shift to warmer/wetter conditions on the BLB between 14 700 and 13 500 years ago associated with the early Bølling/Allerød interstadial. Expand
Late glacial and holocene landscapes of central Beringia
Abstract New palynological and sedimentological data from St. Lawrence Island present a rare view into late-glacial and Holocene environments of the central Bering Land Bridge. The late glaciationExpand
The Bering Land Bridge: a moisture barrier to the dispersal of steppe-tundra biota?
The Bering Land Bridge (BLB) connected the two principal arctic biological refugia, Western and Eastern Beringia, during intervals of lowered sea level in the Pleistocene. Fossil evidence fromExpand
Beringian climate during the Late Pleistocene and Holocene
Abstract The difference between the climates of the Bering Land Bridge and Asiatic (western) Beringia 18–20 ka ago is discussed. The climatic reconstructions of the Bering Land Bridge and westernExpand
Pollen Evidence for Late Pleistocene Bering Land Bridge Environments from Norton Sound, Northeastern Bering Sea, Alaska
ABSTRACT After more than half a century of paleoenvironmental investigations, disagreements persist as to the nature of vegetation type and climate of the Bering land bridge (BLB) during the lateExpand
10 Eastern Beringian Studies
Publisher Summary This chapter discusses the Beringian story, developed on the eastern side of the arctic refugium. The origins of the modern arctic ecosystems date back to Late Tertiary environmentsExpand
The Lateglacial and Postglacial vegetation history of the northwestern limits of Beringia, based on pollen, stomate and tree stump evidence
Abstract In order to reconstruct the Late- and Postglacial vegetation history of the northwestern edge of Beringia, a sediment core was collected from a lake north of the present treeline along theExpand
Late Quaternary vegetation and climate history of the central Bering land bridge from St. Michael Island, western Alaska
  • T. Ager
  • Geology
  • Quaternary Research
  • 2003
Abstract Pollen analysis of a sediment core from Zagoskin Lake on St. Michael Island, northeast Bering Sea, provides a history of vegetation and climate for the central Bering land bridge andExpand
Land/sea relations and speciation in the marine and terrestrial realms
Publisher Summary This chapter reviews some well-documented examples of the effects of sea-level change on the distribution and evolution of terrestrial vertebrates and on marine invertebrates. TheExpand


Historical ecology in Beringia: The south land bridge coast at St. Paul Island
A 14-m core of lake sediments from St. Paul Island yields a long environmental history of the south coast of the Bering land bridge. Tritium assay demonstrates that sands in the bottom 8 m of depositExpand
Paleoecology of late-glacial peats from the bering land bridge, Chukchi Sea shelf region, northwestern Alaska
Abstract Insect fossils and pollen from late Pleistocene nonmarine peat layers were recovered from cores from the shelf region of the Chukchi Sea at depths of about 50 m below sea level. The peatsExpand
The nature of the late Pleistocene environment of Beringia is a topic of current debate. Some have concluded that it was a large arctic-steppe biome which supported an ungulate fauna as diverse asExpand
Sea-level data for parts of the Bering-Chukchi shelves of Beringia from 19,000 to 10,000 14C yr B.P.
Abstract Sea-level changes in Beringia are especially significant because they affect the migration of land plants and animals between Asia and North America, and marine plants and animals betweenExpand
Late Quaternary History of Tundra Vegetation in Northwestern Alaska
Abstract Pollen analysis of a new core from Joe Lake indicates that the late Quaternary vegetation of northwestern Alaska was characterized by four tundra and two forest-tundra types. TheseExpand
Extent and Timing of the Last Glacial Maximum in Southwestern Alaska
A glacier complex composed of confluent alpine glaciers, island ice caps, and piedmont lobes covered much of the Alaska Peninsula and Kodiak Island during the last glacial maximum (LGM). Because thisExpand
Analysis of pollen and plant and insect macrofossils from 9400-yr-old fluvial terrace deposits along the Ikpikpuk River on the Arctic Slope of Alaska permit reconstruction of the diversity ofExpand
Post-glacial sea-level rise from a coral record at Huon Peninsula, Papua New Guinea
DATING of coral reef terraces can provide a record of changes in sea level, which should be pronounced during the transition between glacial and interglacial periods. Cores drilled from coral reefsExpand
A framework for interpreting paleoclimatic variations in Eastern Beringia
Abstract Paleoclimatic variations in a particular region can be viewed as the outcome of the superimposition of the effects of a number of large-scale controls. A framework for understandingExpand
A Large Drop in Atmospheric 14C/12C and Reduced Melting in the Younger Dryas, Documented with 230Th Ages of Corals
These measurements satisfy one of the conditions required by the hypothesis that the diversion of meltwater from the Mississippi to the St. Lawrence River triggered the Younger Dryas event, and show that globally averaged rates of melting were relatively high at the beginning of the YD. Expand