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| DOI | 10.1007/s00027-023-01021-2 |
| Effects of climate change and variability on thermal regime and dissolved oxygen resources of oligotrophic lakes in the Adirondack Mountain region | |
| 发表日期 | 2024 |
| ISSN | 1015-1621 |
| EISSN | 1420-9055 |
| 起始页码 | 86 |
| 结束页码 | 1 |
| 卷号 | 86期号:1 |
| 英文摘要 | An analysis of multidecadal (1994-2021) temperature and dissolved oxygen profiles revealed a generally consistent pattern of response to climate change among oligotrophic lakes in the Adirondack Mountain region. Regional increases in annual average air temperature (0.34 +/- 0.09 degrees C per decade) were accompanied by warming and thinning of epilimnia, cooling and expansion of hypolimnia, and declining hypolimnetic dissolved oxygen. Lakes in this region are recovering from acidification and we hypothesize that associated increases in dissolved color have caused greater heat trapping in the surface layer and earlier onset of stratification. The combined effects of increasing air temperature and declining water clarity resulted in stronger thermal stratification and greater oxygen depletion in bottom waters. Although the lakes were clustered in a relatively small geographic region, we found considerable interlake variability in trends for epilimnetic temperature (-0.06 to 0.66 degrees C decade(-1)), hypolimnetic temperature (-0.44 to 0.31 degrees C decade(-1)), and hypolimnetic oxygen (-55 to 0.7 mu g L-1 year(-1)). Lake bathymetry was a key variable determining the sensitivity of lakes to climate effects on oxygen resources. Lakes with thin hypolimnia exhibited low dissolved oxygen concentrations, which were exacerbated by strengthening of vertical temperature gradients and earlier onset of stratification. Photic depths are decreasing faster than mixing depths such that declines in photosynthesis may contribute to lower dissolved oxygen in deeper layers. We predict that with climate warming, fewer Adirondack lakes will provide suitable habitat for cold water fisheries such as brook trout due to decreasing hypolimnetic oxygen. |
| 英文关键词 | Lakes; Climate change; Thermal stratification; Dissolved oxygen |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology |
| WOS类目 | Environmental Sciences ; Limnology ; Marine & Freshwater Biology |
| WOS记录号 | WOS:001104279800002 |
| 来源期刊 | AQUATIC SCIENCES
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/286733 |
| 作者单位 | Virginia Commonwealth University |
| 推荐引用方式 GB/T 7714 | . Effects of climate change and variability on thermal regime and dissolved oxygen resources of oligotrophic lakes in the Adirondack Mountain region[J],2024,86(1). |
| APA | (2024).Effects of climate change and variability on thermal regime and dissolved oxygen resources of oligotrophic lakes in the Adirondack Mountain region.AQUATIC SCIENCES,86(1). |
| MLA | "Effects of climate change and variability on thermal regime and dissolved oxygen resources of oligotrophic lakes in the Adirondack Mountain region".AQUATIC SCIENCES 86.1(2024). |
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