What Drives Warming Trends in Streams? A Case Study from the Alpine Foothills
Abstract We investigated the effects of climate warming and land‐use changes on the temperature and discharge of seven Swiss and Italian streams in the catchment of Lake Lugano. In addition, we attempted to predict future stream conditions based on regional climate scenarios. Between 1976 and 2012,...
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crwiley:10.1002/rra.2763 2024-06-02T08:11:30+00:00 What Drives Warming Trends in Streams? A Case Study from the Alpine Foothills Lepori, F. Pozzoni, M. Pera, S. 2014 http://dx.doi.org/10.1002/rra.2763 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Frra.2763 https://onlinelibrary.wiley.com/doi/pdf/10.1002/rra.2763 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor River Research and Applications volume 31, issue 6, page 663-675 ISSN 1535-1459 1535-1467 journal-article 2014 crwiley https://doi.org/10.1002/rra.2763 2024-05-03T10:59:46Z Abstract We investigated the effects of climate warming and land‐use changes on the temperature and discharge of seven Swiss and Italian streams in the catchment of Lake Lugano. In addition, we attempted to predict future stream conditions based on regional climate scenarios. Between 1976 and 2012, the study streams warmed by 1.5–4.3 °C, whereas discharge showed no long‐term trends. Warming trends were driven mainly by catchment urbanization and two large‐scale climatic oscillations, the North Atlantic Oscillation and the Atlantic Multidecadal Oscillation. In comparison, independent influences by radiative forcing due to increased atmospheric CO 2 were uncertain. However, radiative forcing was predicted to further increase stream temperature (to +3–7 °C), reduce summer discharge (to −46%) and increase winter discharge (to +96%) between the present and 2070–2099. These results provide new insights into the drivers of long‐term temperature and discharge trends in European streams subject to multiple impacts. The picture emerging is one of transition, where greenhouse‐gas forcing is gaining ground over climate oscillations and urbanization, the drivers of past trends. This shift would impress a more directional nature upon future changes in stream temperature and discharge, and extend anthropogenic warming to rural streams. Diffusing future impacts on stream ecosystems would require adaptation measures at local to national scales and mitigation of greenhouse‐gas emissions at the global scale. Copyright © 2014 John Wiley & Sons, Ltd. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Wiley Online Library River Research and Applications 31 6 663 675 |
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English |
description |
Abstract We investigated the effects of climate warming and land‐use changes on the temperature and discharge of seven Swiss and Italian streams in the catchment of Lake Lugano. In addition, we attempted to predict future stream conditions based on regional climate scenarios. Between 1976 and 2012, the study streams warmed by 1.5–4.3 °C, whereas discharge showed no long‐term trends. Warming trends were driven mainly by catchment urbanization and two large‐scale climatic oscillations, the North Atlantic Oscillation and the Atlantic Multidecadal Oscillation. In comparison, independent influences by radiative forcing due to increased atmospheric CO 2 were uncertain. However, radiative forcing was predicted to further increase stream temperature (to +3–7 °C), reduce summer discharge (to −46%) and increase winter discharge (to +96%) between the present and 2070–2099. These results provide new insights into the drivers of long‐term temperature and discharge trends in European streams subject to multiple impacts. The picture emerging is one of transition, where greenhouse‐gas forcing is gaining ground over climate oscillations and urbanization, the drivers of past trends. This shift would impress a more directional nature upon future changes in stream temperature and discharge, and extend anthropogenic warming to rural streams. Diffusing future impacts on stream ecosystems would require adaptation measures at local to national scales and mitigation of greenhouse‐gas emissions at the global scale. Copyright © 2014 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Lepori, F. Pozzoni, M. Pera, S. |
spellingShingle |
Lepori, F. Pozzoni, M. Pera, S. What Drives Warming Trends in Streams? A Case Study from the Alpine Foothills |
author_facet |
Lepori, F. Pozzoni, M. Pera, S. |
author_sort |
Lepori, F. |
title |
What Drives Warming Trends in Streams? A Case Study from the Alpine Foothills |
title_short |
What Drives Warming Trends in Streams? A Case Study from the Alpine Foothills |
title_full |
What Drives Warming Trends in Streams? A Case Study from the Alpine Foothills |
title_fullStr |
What Drives Warming Trends in Streams? A Case Study from the Alpine Foothills |
title_full_unstemmed |
What Drives Warming Trends in Streams? A Case Study from the Alpine Foothills |
title_sort |
what drives warming trends in streams? a case study from the alpine foothills |
publisher |
Wiley |
publishDate |
2014 |
url |
http://dx.doi.org/10.1002/rra.2763 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Frra.2763 https://onlinelibrary.wiley.com/doi/pdf/10.1002/rra.2763 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
River Research and Applications volume 31, issue 6, page 663-675 ISSN 1535-1459 1535-1467 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/rra.2763 |
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River Research and Applications |
container_volume |
31 |
container_issue |
6 |
container_start_page |
663 |
op_container_end_page |
675 |
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1800757673529966592 |