Terrestrial and aquatic palynomorphs in Holocene sediments from the Chukchi–Alaskan margin, western Arctic Ocean: Implications for the history of marine circulation and climatic environments
Two sediment cores from the Chukchi Sea margin north of Alaska were analyzed for palynological composition including terrestrial and aquatic palynomorphs. Based on 13 radiocarbon ages, the investigated sedimentary record represents most of the Holocene with a century to multidecadal age resolution....
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crsagepubl:10.1177/0959683616678459 2023-05-15T15:09:10+02:00 Terrestrial and aquatic palynomorphs in Holocene sediments from the Chukchi–Alaskan margin, western Arctic Ocean: Implications for the history of marine circulation and climatic environments Kim, So-Young Polyak, Leonid Delusina, Irina Korea Polar Research Institute Korea Polar Research Institute 2016 http://dx.doi.org/10.1177/0959683616678459 http://journals.sagepub.com/doi/pdf/10.1177/0959683616678459 http://journals.sagepub.com/doi/full-xml/10.1177/0959683616678459 en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 27, issue 7, page 976-986 ISSN 0959-6836 1477-0911 Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change journal-article 2016 crsagepubl https://doi.org/10.1177/0959683616678459 2022-04-14T04:54:54Z Two sediment cores from the Chukchi Sea margin north of Alaska were analyzed for palynological composition including terrestrial and aquatic palynomorphs. Based on 13 radiocarbon ages, the investigated sedimentary record represents most of the Holocene with a century to multidecadal age resolution. Three palynological zones were discriminated based on the abundance of major palynomorph groups (terrestrial and freshwater palynomorphs and dinoflagellate cysts) and composition of spore and pollen assemblages. They are interpreted in terms of depositional and paleoclimatic changes including predominance of redeposition by meltwater or sea ice in the early-Holocene, a strong input of contemporaneous material related to Pacific water advection culminating after ca. 6000 yr BP, and more subtle changes in the late-Holocene. It is concluded that depositional environments, such as current transportation and mixing, have an overall major control on palynomorph distribution. The climatic factors may have also played an important role in palynomorph abundance and composition, especially in the middle- to late-Holocene, when circulation changes were less dramatic than during the flooding of the Bering Strait and the shallow Chukchi Sea shelf. Comprehending these linkages requires a better knowledge of the Holocene vegetation history in the coastal areas of Alaska and Chukchi Peninsula. Article in Journal/Newspaper Arctic Arctic Ocean Bering Strait Chukchi Chukchi Peninsula Chukchi Sea Sea ice Alaska SAGE Publications (via Crossref) Arctic Arctic Ocean Bering Strait Chukchi Sea Pacific The Holocene 27 7 976 986 |
institution |
Open Polar |
collection |
SAGE Publications (via Crossref) |
op_collection_id |
crsagepubl |
language |
English |
topic |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
spellingShingle |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change Kim, So-Young Polyak, Leonid Delusina, Irina Terrestrial and aquatic palynomorphs in Holocene sediments from the Chukchi–Alaskan margin, western Arctic Ocean: Implications for the history of marine circulation and climatic environments |
topic_facet |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
description |
Two sediment cores from the Chukchi Sea margin north of Alaska were analyzed for palynological composition including terrestrial and aquatic palynomorphs. Based on 13 radiocarbon ages, the investigated sedimentary record represents most of the Holocene with a century to multidecadal age resolution. Three palynological zones were discriminated based on the abundance of major palynomorph groups (terrestrial and freshwater palynomorphs and dinoflagellate cysts) and composition of spore and pollen assemblages. They are interpreted in terms of depositional and paleoclimatic changes including predominance of redeposition by meltwater or sea ice in the early-Holocene, a strong input of contemporaneous material related to Pacific water advection culminating after ca. 6000 yr BP, and more subtle changes in the late-Holocene. It is concluded that depositional environments, such as current transportation and mixing, have an overall major control on palynomorph distribution. The climatic factors may have also played an important role in palynomorph abundance and composition, especially in the middle- to late-Holocene, when circulation changes were less dramatic than during the flooding of the Bering Strait and the shallow Chukchi Sea shelf. Comprehending these linkages requires a better knowledge of the Holocene vegetation history in the coastal areas of Alaska and Chukchi Peninsula. |
author2 |
Korea Polar Research Institute Korea Polar Research Institute |
format |
Article in Journal/Newspaper |
author |
Kim, So-Young Polyak, Leonid Delusina, Irina |
author_facet |
Kim, So-Young Polyak, Leonid Delusina, Irina |
author_sort |
Kim, So-Young |
title |
Terrestrial and aquatic palynomorphs in Holocene sediments from the Chukchi–Alaskan margin, western Arctic Ocean: Implications for the history of marine circulation and climatic environments |
title_short |
Terrestrial and aquatic palynomorphs in Holocene sediments from the Chukchi–Alaskan margin, western Arctic Ocean: Implications for the history of marine circulation and climatic environments |
title_full |
Terrestrial and aquatic palynomorphs in Holocene sediments from the Chukchi–Alaskan margin, western Arctic Ocean: Implications for the history of marine circulation and climatic environments |
title_fullStr |
Terrestrial and aquatic palynomorphs in Holocene sediments from the Chukchi–Alaskan margin, western Arctic Ocean: Implications for the history of marine circulation and climatic environments |
title_full_unstemmed |
Terrestrial and aquatic palynomorphs in Holocene sediments from the Chukchi–Alaskan margin, western Arctic Ocean: Implications for the history of marine circulation and climatic environments |
title_sort |
terrestrial and aquatic palynomorphs in holocene sediments from the chukchi–alaskan margin, western arctic ocean: implications for the history of marine circulation and climatic environments |
publisher |
SAGE Publications |
publishDate |
2016 |
url |
http://dx.doi.org/10.1177/0959683616678459 http://journals.sagepub.com/doi/pdf/10.1177/0959683616678459 http://journals.sagepub.com/doi/full-xml/10.1177/0959683616678459 |
geographic |
Arctic Arctic Ocean Bering Strait Chukchi Sea Pacific |
geographic_facet |
Arctic Arctic Ocean Bering Strait Chukchi Sea Pacific |
genre |
Arctic Arctic Ocean Bering Strait Chukchi Chukchi Peninsula Chukchi Sea Sea ice Alaska |
genre_facet |
Arctic Arctic Ocean Bering Strait Chukchi Chukchi Peninsula Chukchi Sea Sea ice Alaska |
op_source |
The Holocene volume 27, issue 7, page 976-986 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1177/0959683616678459 |
container_title |
The Holocene |
container_volume |
27 |
container_issue |
7 |
container_start_page |
976 |
op_container_end_page |
986 |
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1766340389098225664 |