Evaluating the influence of snow and ice conditions on under-ice light regimes, dissolved oxygen, and primary production in shallow lakes using controlled manipulative systems

IF 3.8 1区 地球科学 Q1 LIMNOLOGY
David C. Barrett, Frederick J. Wrona
{"title":"Evaluating the influence of snow and ice conditions on under-ice light regimes, dissolved oxygen, and primary production in shallow lakes using controlled manipulative systems","authors":"David C. Barrett,&nbsp;Frederick J. Wrona","doi":"10.1002/lno.12788","DOIUrl":null,"url":null,"abstract":"<p>Shifts in hydroclimatic regimes associated with global climate change are affecting the timing and duration of winter ice-cover in temperate and high-latitude lakes. Less is known on how associated changes in ice quality potentially affect under-ice ecological processes and related biogeochemistry, particularly in shallow lake systems. This experimental study examined how differing surface ice-cover types (slushed white ice, unmanipulated ice formation [black], snow-on-ice) affected under-ice light and oxygen regimes and associated chlorophyll <i>a</i> concentrations, and water quality parameters using a combination of aboveground mesocosms and natural ponds over two consecutive winter seasons. In both systems, light transmission under white ice did not differ significantly from black but was significantly greater than snow-on-ice. Measures of light extinction coefficients taken at the ice-water interface in the experimental ponds increased for black, white, and snow-on-ice, respectively, with all values being above thresholds for autotrophic activity. Under-ice dissolved oxygen levels in all mesocosm ice treatments increased continually over time with increasing day length, peaking prior to ice off. Accumulated DO levels were aligned with observed chlorophyll <i>a</i> concentrations, with peaks early after ice onset, and decreases as winter progressed though patterns differed between years. No significant differences were observed in mean chlorophyll <i>a</i> levels in snow-removed treatment ponds, regardless of whether white or black ice was present while the snow-on-ice ponds displayed consistently lower levels. This study highlights the complexities and importance of using manipulative experimental approaches to advance our understanding of how alterations in surface ice-cover quality affect under-ice hydro-ecological processes.</p>","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"70 3","pages":"599-616"},"PeriodicalIF":3.8000,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lno.12788","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Limnology and Oceanography","FirstCategoryId":"89","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/lno.12788","RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"LIMNOLOGY","Score":null,"Total":0}
引用次数: 0

Abstract

Shifts in hydroclimatic regimes associated with global climate change are affecting the timing and duration of winter ice-cover in temperate and high-latitude lakes. Less is known on how associated changes in ice quality potentially affect under-ice ecological processes and related biogeochemistry, particularly in shallow lake systems. This experimental study examined how differing surface ice-cover types (slushed white ice, unmanipulated ice formation [black], snow-on-ice) affected under-ice light and oxygen regimes and associated chlorophyll a concentrations, and water quality parameters using a combination of aboveground mesocosms and natural ponds over two consecutive winter seasons. In both systems, light transmission under white ice did not differ significantly from black but was significantly greater than snow-on-ice. Measures of light extinction coefficients taken at the ice-water interface in the experimental ponds increased for black, white, and snow-on-ice, respectively, with all values being above thresholds for autotrophic activity. Under-ice dissolved oxygen levels in all mesocosm ice treatments increased continually over time with increasing day length, peaking prior to ice off. Accumulated DO levels were aligned with observed chlorophyll a concentrations, with peaks early after ice onset, and decreases as winter progressed though patterns differed between years. No significant differences were observed in mean chlorophyll a levels in snow-removed treatment ponds, regardless of whether white or black ice was present while the snow-on-ice ponds displayed consistently lower levels. This study highlights the complexities and importance of using manipulative experimental approaches to advance our understanding of how alterations in surface ice-cover quality affect under-ice hydro-ecological processes.

Abstract Image

利用控制操作系统评估冰雪条件对浅湖冰下光照、溶解氧和初级产量的影响
与全球气候变化相关的水文气候系统的变化正在影响温带和高纬度湖泊冬季冰盖的时间和持续时间。对于冰质的相关变化如何潜在影响冰下生态过程和相关生物地球化学,尤其是在浅水湖泊系统中,人们知之甚少。本实验研究在连续两个冬季,利用地面中型模拟池和天然池塘,考察了不同的表面冰盖类型(碎白冰、未经人工处理的冰层(黑色)、冰上积雪)如何影响冰下光照和氧气机制、相关的叶绿素 a 浓度以及水质参数。在这两个系统中,白冰下的透光率与黑冰下的透光率没有明显差异,但明显高于冰雪下的透光率。在实验池塘的冰水交界处测量的光消光系数在黑冰、白冰和冰上积雪下分别有所增加,所有数值都高于自养活动的临界值。随着昼长的增加,所有中观冰处理的冰下溶解氧水平都在持续增加,并在冰层脱落前达到峰值。累积溶解氧水平与观测到的叶绿素 a 浓度一致,在结冰后初期达到峰值,随着冬季的到来逐渐降低,但不同年份的模式有所不同。无论出现的是白冰还是黑冰,除雪处理池塘的平均叶绿素 a 水平都没有明显差异,而冰上积雪池塘的叶绿素 a 水平一直较低。这项研究强调了使用操作性实验方法的复杂性和重要性,以促进我们对地表冰盖质量变化如何影响冰下水文生态过程的理解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Limnology and Oceanography
Limnology and Oceanography 地学-海洋学
CiteScore
8.80
自引率
6.70%
发文量
254
审稿时长
3 months
期刊介绍: Limnology and Oceanography (L&O; print ISSN 0024-3590, online ISSN 1939-5590) publishes original articles, including scholarly reviews, about all aspects of limnology and oceanography. The journal''s unifying theme is the understanding of aquatic systems. Submissions are judged on the originality of their data, interpretations, and ideas, and on the degree to which they can be generalized beyond the particular aquatic system examined. Laboratory and modeling studies must demonstrate relevance to field environments; typically this means that they are bolstered by substantial "real-world" data. Few purely theoretical or purely empirical papers are accepted for review.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信