Recovery of brown trout populations in streams exposed to atmospheric acidification in the Bohemian Forest

Q2 Agricultural and Biological Sciences
J. Matěna, V. Matěnová, P. Blabolil, J. Kopáček, Jana Peltanová, Michal Šorf, J. Žaloudík, J. Vrba
{"title":"Recovery of brown trout populations in streams exposed to atmospheric acidification in the Bohemian Forest","authors":"J. Matěna, V. Matěnová, P. Blabolil, J. Kopáček, Jana Peltanová, Michal Šorf, J. Žaloudík, J. Vrba","doi":"10.25225/fozo.v66.i1.a2.2017","DOIUrl":null,"url":null,"abstract":"Abstract. \n Water chemistry and fish occurrence in outflows from two lakes recovering from acidification were studied during 2005–2010. The two lakes represented the regional extremes: while Lake Laka (LA) was the least acidified among the Bohemian Forest lakes, Lake Čertovo (CT) was the most acidified. Water chemistry improved downstream in either outlet due to mixing with less acidic water from tributaries. While pH of the LA stream was circumneutral and concentrations of ionic aluminium (Ali) were low (< 50 μg.l-1) except for temporary acidic episodes during snowmelt, the CT stream remained permanently acidified with Ali concentrations (> 200 μg.l-1) throughout the year and was considered as a reference site. Brown trout (Salmo trutta s.l.) survived in the LA stream already at 0.7 km from the lake. A stable trout population, including young-of-the-year fish increasing in numbers, was found in the LA stream between 2005 and 2010 despite the spring short-term acid episodes. Any recovery of the CT stream is unlikely as the outflow continued to be acidic at 1.5 km from the lake and Ali concentrations were still by one order of magnitude higher than the limit acceptable by trout.","PeriodicalId":50436,"journal":{"name":"Folia Zoologica","volume":"1986 1","pages":"1 - 10"},"PeriodicalIF":0.0000,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Folia Zoologica","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.25225/fozo.v66.i1.a2.2017","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Agricultural and Biological Sciences","Score":null,"Total":0}
引用次数: 5

Abstract

Abstract. Water chemistry and fish occurrence in outflows from two lakes recovering from acidification were studied during 2005–2010. The two lakes represented the regional extremes: while Lake Laka (LA) was the least acidified among the Bohemian Forest lakes, Lake Čertovo (CT) was the most acidified. Water chemistry improved downstream in either outlet due to mixing with less acidic water from tributaries. While pH of the LA stream was circumneutral and concentrations of ionic aluminium (Ali) were low (< 50 μg.l-1) except for temporary acidic episodes during snowmelt, the CT stream remained permanently acidified with Ali concentrations (> 200 μg.l-1) throughout the year and was considered as a reference site. Brown trout (Salmo trutta s.l.) survived in the LA stream already at 0.7 km from the lake. A stable trout population, including young-of-the-year fish increasing in numbers, was found in the LA stream between 2005 and 2010 despite the spring short-term acid episodes. Any recovery of the CT stream is unlikely as the outflow continued to be acidic at 1.5 km from the lake and Ali concentrations were still by one order of magnitude higher than the limit acceptable by trout.
波西米亚森林中暴露于大气酸化的溪流中褐鳟种群的恢复
摘要在2005-2010年期间,研究了两个酸化恢复湖泊的水化学和鱼类发生情况。这两个湖泊代表了区域极端:Laka湖(LA)是波希米亚森林湖泊中酸化程度最低的,Čertovo湖(CT)酸化程度最高。由于与支流的酸性水混合,下游任一出口的水化学性质都有所改善。虽然LA流的pH值为环中性,离子铝(Ali)浓度较低(< 50 μg.l-1),但除了融雪期间短暂的酸性事件外,CT流全年保持永久性酸化,Ali浓度(> 200 μg.l-1),可作为参考点。褐鳟(Salmo trutta s.l.)已经在离湖0.7公里的洛杉矶溪流中存活下来。在2005年至2010年期间,尽管春季出现了短期的酸性事件,但在洛杉矶溪流中发现了一个稳定的鳟鱼种群,其中包括年轻的鱼类数量增加。CT流的任何恢复都不太可能,因为离湖1.5公里处的流出物仍然呈酸性,阿里浓度仍然比鳟鱼可接受的极限高一个数量级。
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
Folia Zoologica
Folia Zoologica 生物-动物学
CiteScore
1.70
自引率
0.00%
发文量
0
审稿时长
3 months
期刊介绍: Information not localized
×
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