Synchrony in catchment stream colour levels is driven by both local and regional climate.
Streams draining upland catchments carry large quantities of carbon from terrestrial stocks to downstream freshwater and marine ecosystems. Here it either enters long-term storage in sediments or enters the atmosphere as gaseous carbon through a combination of biotic and abiotic processes. There are...
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ftdundalkit:oai:eprints.dkit.ie:674 2023-05-15T17:36:02+02:00 Synchrony in catchment stream colour levels is driven by both local and regional climate. Doyle, Brian C. de Eyto, Elvira Dillane, Mary Poole, Russell McCarthy, Valerie Ryder, Elizabeth Jennings, Eleanor 2019-03-15 application/pdf http://eprints.dkit.ie/674/ https://doi.org/10.5194/bg-16-1053-2019 en eng European Geosciences Union /674/1/Synchrony%20in.pdf Doyle, Brian C. and de Eyto, Elvira and Dillane, Mary and Poole, Russell and McCarthy, Valerie and Ryder, Elizabeth and Jennings, Eleanor (2019) Synchrony in catchment stream colour levels is driven by both local and regional climate. Biogeosciences, 16 (5). pp. 1053-1071. ISSN 1726-4170 https://doi.org/10.5194/bg-16-1053-2019 Science Article PeerReviewed 2019 ftdundalkit https://doi.org/10.5194/bg-16-1053-2019 2022-09-19T17:23:06Z Streams draining upland catchments carry large quantities of carbon from terrestrial stocks to downstream freshwater and marine ecosystems. Here it either enters long-term storage in sediments or enters the atmosphere as gaseous carbon through a combination of biotic and abiotic processes. There are, however, increasing concerns over the long-term stability of terrestrial carbon stores in blanket peatland catchments as a result of anthropogenic pressures and climate change. We analysed sub-annual and inter-annual changes in river water colour (a reliable proxy measurement of dissolved organic carbon; DOC) using 6 years of weekly data, from 2011 to 2016. This time-series dataset was gathered from three contiguous river sub-catchments, the Black, the Glenamong and the Srahrevagh, in a blanket peatland catchment system in western Ireland, and it was used to identify the drivers that best explained observed temporal change in river colour. The data were also used to estimate annual DOC loads from each catchment. General additive mixed modelling was used to identify the principle environmental drivers of water colour in the rivers, while wavelet cross-correlation analysis was used to identify common frequencies in correlations. At 130 mg Pt Co L−1, the mean colour levels in the Srahrevagh (the sub-catchment with lowest rainfall and higher forest cover) were almost 50 % higher than those from the Black and Glenamong, at 95 and 84 mg Pt Co L−1 respectively. The decomposition of the colour datasets revealed similar multi-annual, annual and event-based (random component) trends, illustrating that environmental drivers operated synchronously at each of these temporal scales. For both the Black and its nested Srahrevagh catchment, three variables (soil temperature, soil moisture deficit, SMD, and the weekly North Atlantic Oscillation, NAO) combined to explain 54 % and 58 % of the deviance in colour respectively. In the Glenamong, which had steeper topography and a higher percentage of peat intersected by streams, soil ... Article in Journal/Newspaper North Atlantic North Atlantic oscillation Dundalk Institute of Technology: STÓR Biogeosciences 16 5 1053 1071 |
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Science Doyle, Brian C. de Eyto, Elvira Dillane, Mary Poole, Russell McCarthy, Valerie Ryder, Elizabeth Jennings, Eleanor Synchrony in catchment stream colour levels is driven by both local and regional climate. |
topic_facet |
Science |
description |
Streams draining upland catchments carry large quantities of carbon from terrestrial stocks to downstream freshwater and marine ecosystems. Here it either enters long-term storage in sediments or enters the atmosphere as gaseous carbon through a combination of biotic and abiotic processes. There are, however, increasing concerns over the long-term stability of terrestrial carbon stores in blanket peatland catchments as a result of anthropogenic pressures and climate change. We analysed sub-annual and inter-annual changes in river water colour (a reliable proxy measurement of dissolved organic carbon; DOC) using 6 years of weekly data, from 2011 to 2016. This time-series dataset was gathered from three contiguous river sub-catchments, the Black, the Glenamong and the Srahrevagh, in a blanket peatland catchment system in western Ireland, and it was used to identify the drivers that best explained observed temporal change in river colour. The data were also used to estimate annual DOC loads from each catchment. General additive mixed modelling was used to identify the principle environmental drivers of water colour in the rivers, while wavelet cross-correlation analysis was used to identify common frequencies in correlations. At 130 mg Pt Co L−1, the mean colour levels in the Srahrevagh (the sub-catchment with lowest rainfall and higher forest cover) were almost 50 % higher than those from the Black and Glenamong, at 95 and 84 mg Pt Co L−1 respectively. The decomposition of the colour datasets revealed similar multi-annual, annual and event-based (random component) trends, illustrating that environmental drivers operated synchronously at each of these temporal scales. For both the Black and its nested Srahrevagh catchment, three variables (soil temperature, soil moisture deficit, SMD, and the weekly North Atlantic Oscillation, NAO) combined to explain 54 % and 58 % of the deviance in colour respectively. In the Glenamong, which had steeper topography and a higher percentage of peat intersected by streams, soil ... |
format |
Article in Journal/Newspaper |
author |
Doyle, Brian C. de Eyto, Elvira Dillane, Mary Poole, Russell McCarthy, Valerie Ryder, Elizabeth Jennings, Eleanor |
author_facet |
Doyle, Brian C. de Eyto, Elvira Dillane, Mary Poole, Russell McCarthy, Valerie Ryder, Elizabeth Jennings, Eleanor |
author_sort |
Doyle, Brian C. |
title |
Synchrony in catchment stream colour levels is driven by both local and regional climate. |
title_short |
Synchrony in catchment stream colour levels is driven by both local and regional climate. |
title_full |
Synchrony in catchment stream colour levels is driven by both local and regional climate. |
title_fullStr |
Synchrony in catchment stream colour levels is driven by both local and regional climate. |
title_full_unstemmed |
Synchrony in catchment stream colour levels is driven by both local and regional climate. |
title_sort |
synchrony in catchment stream colour levels is driven by both local and regional climate. |
publisher |
European Geosciences Union |
publishDate |
2019 |
url |
http://eprints.dkit.ie/674/ https://doi.org/10.5194/bg-16-1053-2019 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
/674/1/Synchrony%20in.pdf Doyle, Brian C. and de Eyto, Elvira and Dillane, Mary and Poole, Russell and McCarthy, Valerie and Ryder, Elizabeth and Jennings, Eleanor (2019) Synchrony in catchment stream colour levels is driven by both local and regional climate. Biogeosciences, 16 (5). pp. 1053-1071. ISSN 1726-4170 https://doi.org/10.5194/bg-16-1053-2019 |
op_doi |
https://doi.org/10.5194/bg-16-1053-2019 |
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Biogeosciences |
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16 |
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5 |
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1053 |
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1071 |
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1766135370861248512 |