Chironomid-inferred postglacial temperature reconstruction from Gold Lake, Oregon, USA
Datos Bibliográficos
| ID | 24086671 |
|---|---|
| Autores | Jamila Baig (0000-0003-0095-2856, University of Oregon, autor de correspondencia), Daniel G Gavin (0000-0001-8743-3949, University of Oregon), Ian Walker (0000-0002-0079-3149), Ian R Walker (0009-0003-1028-5708, University of British Columbia, Okanagan Campus), David Porinchu, David F Porinchu (0000-0002-0495-3082, University of Georgia) |
| Año | 2025 |
| Volumen | 125 |
| Páginas | 104-117 |
| Fecha de publicación | 2025-05-01 |
| Peer Reviewed | Sí |
| Open Access | Sí |
| Tipo | ARTICLE |
| Revista | Quaternary Research (JOURNAL) |
| Identificadores de la revista | ISSN: 0033-5894 • E-ISSN: 1096-0287 |
| Editorial | Cambridge University Press (CUP) (PUBLISHER) |
| DOI | 10.1017/qua.2024.56 |
| OpenAlex | W4408415374 |
| Idioma | EN |
| Referencias citadas | 79 |
A paleotemperature reconstruction inferred from subfossil chironomid (non-biting midge) assemblages in a 13-meter, 14,500-yr lake sediment record from a montane forest in the Pacific Northwest is compared to existing quantitative temperature reconstructions from the Pacific Northwest. With updated temperatures, a regional training set was used to develop a midge-based mean July air temperature (MJAT) inference model (r 2 jack = 0.71, root mean square error of prediction = 1.09°C). The average inferred MJAT varied between 9.4°C and 13.2°C. During the late-glacial period, MJAT ranged between 9.4°C and 10.8°C, and the lowest MJAT (9.4°C) is inferred at ca. 12.7 ka during the Younger Dryas. The transition into the Early Holocene was marked by an increase from 11°C at 11 ka to 12°C at 9.2 ka. Following deposition of the Mazama tephra, chironomid concentration decreased rapidly, and MJAT rose to 12.3°C at ca. 7.6 ka. This change in chironomid assemblage may be due to the direct effects of the tephra on the surface energy balance. The reconstructed temperature did not track decreasing Holocene summer insolation but instead revealed Late Holocene warming, which is similar to a chironomid reconstruction in the eastern Sierra Nevada and a sea-surface temperature reconstruction from northern California.
Archaeology · Geography · Evolution and Paleontology Studies · Geology · Geology and Paleoclimatology Research · Oceanography · Paleontology · Pleistocene-Era Hominins and Archaeology
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| Velocidad de citación | historical |
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| Altamente citado | No |