دورية أكاديمية
Regime Shifts in Lake Oxygen and Temperature in the Rapidly Warming High Arctic
| العنوان: | Regime Shifts in Lake Oxygen and Temperature in the Rapidly Warming High Arctic |
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| المؤلفون: | Yohanna Klanten, Sally MacIntyre, Cameron Fitzpatrick, Warwick F. Vincent, Dermot Antoniades |
| المصدر: | Geophysical Research Letters, Vol 51, Iss 6, Pp n/a-n/a (2024) |
| بيانات النشر: | Wiley, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Geophysics. Cosmic physics |
| مصطلحات موضوعية: | climate change, oxygen dynamics, stratification, high Arctic lakes, annual cycles, lake ice cover, Geophysics. Cosmic physics, QC801-809 |
| الوصف: | Abstract Global warming is destabilizing the cryosphere, with consequences for glaciers, permafrost, sea ice and lake ice. Polar lakes have short ice‐free seasons, and small changes in ice cover duration have the potential to provoke alterations to ecosystem structure. However, these lakes are understudied, and the consequences for mixing regimes, thermal structures and biogeochemical processes remain unclear. We measured three annual cycles of dissolved oxygen, temperature and specific conductivity in a lake at ∼83°N to investigate limnological processes and their interannual variability. There were sharp interannual contrasts in lake dynamics, with state shifts in mixing, stratification and oxygen regimes due to air temperature variability and meteorological events. We also observed unusual thermal profiles that were associated with solute gradients. These striking differences underscore the sensitivity of high Arctic lakes to interannual variations in meteorological forcing, and their susceptibility to regime shifts in response to ongoing global change. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1944-8007 0094-8276 |
| Relation: | https://doaj.org/toc/0094-8276; https://doaj.org/toc/1944-8007 |
| DOI: | 10.1029/2023GL106985 |
| URL الوصول: | https://doaj.org/article/eb6501d488ae457bb0d66ff29b8f31b4 |
| رقم الأكسشن: | edsdoj.b6501d488ae457bb0d66ff29b8f31b4 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 19448007 00948276 |
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| DOI: | 10.1029/2023GL106985 |