Past, present and future biomes in Beringia: Comparison between simulations and pollen analysis
- 1International Arctic Research Center, University of Alaska Fairbanks, Fairbaks, Alaska 99775, USA
- 2Japan Agency for Marine-Earth Science and Technology, Yokohama, 236-0001, Japan
- 3Alaska Quaternary Center, University of Alaska Fairbanks, Fairbaks, Alaska 99775, USA
- 1International Arctic Research Center, University of Alaska Fairbanks, Fairbaks, Alaska 99775, USA
- 2Japan Agency for Marine-Earth Science and Technology, Yokohama, 236-0001, Japan
- 3Alaska Quaternary Center, University of Alaska Fairbanks, Fairbaks, Alaska 99775, USA
Abstract. Past, present and future biomes in Beringia, a region including Alaska and Eastern Russia, were simulated using an equilibrium vegetation model, BIOME4 and a statistical downscaling method in order to illustrate their geographical and temporal changes. Outputs form five CMIP5 models were utilized to represent the climate for four time periods, i.e., the Last Glacial Maximum (LGM; 21 ka), the mid-Holocene Optimum (6 ka), the modern period, and the near future (the end of this century under a RCP8.5 scenario). Present-day biome simulations were generally consistent with current vegetation observations in the study region. Pollen samples indicate that the Bering Land Bridge was covered almost entirely by cushionforb and graminoid tundra during the LGM, whereas the paleoclimate simulations show large across-model variations in this region. Three out of the five modelsʼ climate data produce evergreen and deciduous taiga at 21 ka in what is now southwestern Alaska and southeastern Bering continental shelf. The 6 ka simulations are in better agreement with pollen-based distributions of biomes. Future simulations show a general northward shift of biomes, including intrusions of cool and warm-temperate mixed, and cool coniferous forests above 60° N, especially in southwest Alaska.
-
Withdrawal notice
This preprint has been withdrawn.
-
Preprint
(2657 KB)
Kazuyuki Saito et al.
Interactive discussion


-
SC1: 'Comment', Iestyn Barr, 23 Apr 2018
-
AC2: 'Have decided to withdraw', Kazuyuki Saito, 22 May 2018
-
AC2: 'Have decided to withdraw', Kazuyuki Saito, 22 May 2018
-
RC1: 'This study does not advance the science, unfortunately', Anonymous Referee #1, 17 May 2018
-
AC1: 'Have decided to withdraw', Kazuyuki Saito, 22 May 2018
-
AC1: 'Have decided to withdraw', Kazuyuki Saito, 22 May 2018
Interactive discussion


-
SC1: 'Comment', Iestyn Barr, 23 Apr 2018
-
AC2: 'Have decided to withdraw', Kazuyuki Saito, 22 May 2018
-
AC2: 'Have decided to withdraw', Kazuyuki Saito, 22 May 2018
-
RC1: 'This study does not advance the science, unfortunately', Anonymous Referee #1, 17 May 2018
-
AC1: 'Have decided to withdraw', Kazuyuki Saito, 22 May 2018
-
AC1: 'Have decided to withdraw', Kazuyuki Saito, 22 May 2018
Kazuyuki Saito et al.
Kazuyuki Saito et al.
Viewed
HTML | XML | Total | BibTeX | EndNote | |
---|---|---|---|---|---|
1,316 | 342 | 55 | 1,713 | 52 | 50 |
- HTML: 1,316
- PDF: 342
- XML: 55
- Total: 1,713
- BibTeX: 52
- EndNote: 50
Viewed (geographical distribution)
Country | # | Views | % |
---|
Total: | 0 |
HTML: | 0 |
PDF: | 0 |
XML: | 0 |
- 1