| Widespread occurrence of distinct alkenones from Group I haptophytes in freshwater lakes: Implications for paleotemperature and paleoenvironmental reconstructions | |
| Longo, William M.1,18; Huang, Yongsong1,2; Yao, Yuan2; Zhao, Jiaju2; Giblin, Anne E.3; Wang, Xian1; Zech, Roland4; Haberzettl, Torsten17; Jardillier, Ludwig5; Toney, Jaime6; Liu, Zhonghui7; Krivonogov, Sergey8,9; Kolpakova, Marina8; Chu, Guoqiang10; D'Andrea, William J.11; Harada, Naomi12; Nagashima, Kana12; Sato, Miyako12; Yonenobu, Hitoshi13; Yamada, Kazuyoshi14; Gotanda, Katsuya15; Shinozuka, Yoshitsugu16 | |
| 2018-06-15 | |
| 发表期刊 | EARTH AND PLANETARY SCIENCE LETTERS
 |
| 卷号 | 492期号:4页码:239-250 |
| 文章类型 | Article |
| 摘要 | Alkenones are C35-C42 polyunsaturated ketone lipids that are commonly employed to reconstruct changes in sea surface temperature. However, their use in coastal seas and saline lakes can be hindered by species-mixing effects. We recently hypothesized that freshwater lakes are immune to species-mixing effects because they appear to exclusively host Group I haptophyte algae, which produce a distinct distribution of alkenones with a relatively consistent response of alkenone unsaturation to temperature. To evaluate this hypothesis and explore the geographic extent of Group I haptophytes, we analyzed alkenones in sediment and suspended particulate matter samples from lakes distributed throughout the mid- and high latitudes of the Northern Hemisphere (n = 30). Our results indicate that Group I-type alkenone distributions are widespread in freshwater lakes from a range of different climates (mean annual air temperature range: -17.3-10.9 degrees C; mean annual precipitation range: 125-1657 mm yr(-1); latitude range: 40-81 degrees N), and are commonly found in neutral to basic lakes (pH > 7.0), including volcanic lakes and lakes with mafic bedrock. We show that these freshwater lakes do not feature alkenone distributions characteristic of Group II lacustrine haptophytes, providing support for the hypothesis that freshwater lakes are immune to species-mixing effects. In lakes that underwent temporal shifts in salinity, we observed mixed Group I/II alkenone distributions and the alkenone contributions from each group could be quantified with the RIK37 index. Additionally, we observed significant correlations of alkenone unsaturation (U-37(K)) with seasonal and mean annual air temperature with this expanded freshwater lakes dataset, with the strongest correlation occurring during the spring transitional season (U-37(K) = 0.029 * T - 0.49; r(2) = 0.60; p < 0.0001). We present new sediment trap data from two lakes in northern Alaska (Toolik Lake, 68.632 degrees N, 149.602 degrees W; lake E5, 68.643 degrees N, 149.458 degrees W) that demonstrate the highest sedimentary fluxes of alkenones in the spring transitional season, concurrent with the period of lake ice melt and isothermal mixing. Together, these data provide a framework for evaluating lacustrine alkenone distributions and utilizing alkenone unsaturation as a lake temperature proxy. (C) 2018 Elsevier B.V. All rights reserved. |
| 关键词 | Alkenones Paleoclimate Paleoenvironment Temperature Proxy Freshwater Lakes Chemotaxonomy |
| WOS标题词 | Science & Technology ; Physical Sciences |
| DOI | 10.1016/j.eps1.2018.04.002 |
| 关键词[WOS] | LONG-CHAIN-ALKENONES ; GROWTH TEMPERATURE ; EMILIANIA-HUXLEYI ; GEPHYROCAPSA-OCEANICA ; TIBETAN PLATEAU ; BALTIC SEA ; DISTRIBUTIONS ; LACUSTRINE ; SEDIMENTS ; SALINITY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Geochemistry & Geophysics |
| WOS类目 | Geochemistry & Geophysics |
| WOS记录号 | WOS:000432762000023 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ieecas.cn/handle/361006/5128 |
| 专题 | 加速器质谱中心 |
| 作者单位 | 1.Brown Univ, Dept Earth Environm & Planetary Sci, 324 Brook St, Providence, RI 02912 USA 2.Chinese Acad Sci, Inst Earth Environm, Beijing, Shaanxi, Peoples R China 3.Marine Biol Lab, Ecosyst Ctr, 7 MBL St, Woods Hole, MA 02543 USA 4.Friedrich Schiller Univ Jena, Inst Geog, D-07745 Jena, Germany 5.Univ Paris 11, CNRS UMR 8079, Unite Ecol Systemat & Evolut, F-91405 Orsay, France 6.Univ Glasgow, Dept Geog & Earth Sci, Glasgow, Lanark, Scotland 7.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China 8.RAS, SB, Inst Geol & Mineral, Novosibirsk 630090, Russia 9.Novosibirsk State Univ, Novosibirsk 630090, Russia 10.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China 11.Columbia Univ, Lamont Doherty Earth Observ, 61 Route 9W, Palisades, NY 10964 USA 12.Japan Agcy Marine Earth Sci & Technol, Yokosuka, Kanagawa 2370061, Japan 13.Naruto Univ Educ, Coll Educ, Naruto 7728502, Japan 14.Museum Nat & Environm Hist, Shizuoka 4228017, Japan 15.Chiba Univ Commerce, Chiba 2728512, Japan 16.Ritsumeikan Univ, Kyoto 6038577, Japan 17.Ernst Moritz Arndt Univ Greifswald, Inst Geog & Geol, D-17489 Greifswald, Germany 18.Woods Hole Oceanog Inst, Dept Marine Chem & Geochem, 266 Woods Hole Rd, Woods Hole, MA 02543 USA |
| 推荐引用方式 GB/T 7714 | Longo, William M.,Huang, Yongsong,Yao, Yuan,et al. Widespread occurrence of distinct alkenones from Group I haptophytes in freshwater lakes: Implications for paleotemperature and paleoenvironmental reconstructions[J]. EARTH AND PLANETARY SCIENCE LETTERS,2018,492(4):239-250. |
| APA | Longo, William M..,Huang, Yongsong.,Yao, Yuan.,Zhao, Jiaju.,Giblin, Anne E..,...&Shinozuka, Yoshitsugu.(2018).Widespread occurrence of distinct alkenones from Group I haptophytes in freshwater lakes: Implications for paleotemperature and paleoenvironmental reconstructions.EARTH AND PLANETARY SCIENCE LETTERS,492(4),239-250. |
| MLA | Longo, William M.,et al."Widespread occurrence of distinct alkenones from Group I haptophytes in freshwater lakes: Implications for paleotemperature and paleoenvironmental reconstructions".EARTH AND PLANETARY SCIENCE LETTERS 492.4(2018):239-250. |
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