Journal article 827 views 133 downloads
The phantom midge menace: Migratory Chaoborus larvae maintain poor ecosystem state in eutrophic inland waters
Water Research, Volume: 139, Pages: 30 - 37
Swansea University Author: Kam Tang
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DOI (Published version): 10.1016/j.watres.2018.03.060
Abstract
Chaoborus spp. (phantom midge) are prevalent in eutrophic lakes with methane-rich, oxygen depleted hypolimnion and sediments, and the methane-poor, oxygen-rich epilimnion. Using a combination of experiments and system modelling, we demonstrated that the larvae’s burrowing activities in and out of th...
Published in: | Water Research |
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ISSN: | 0043-1354 |
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Elsevier BV
2018
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URI: | https://cronfa.swan.ac.uk/Record/cronfa39194 |
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2020-11-12T20:36:18.5183891 v2 39194 2018-03-26 The phantom midge menace: Migratory Chaoborus larvae maintain poor ecosystem state in eutrophic inland waters 69af43a3b9da24aef65c5d3a44956fe3 0000-0001-9427-9564 Kam Tang Kam Tang true false 2018-03-26 SBI Chaoborus spp. (phantom midge) are prevalent in eutrophic lakes with methane-rich, oxygen depleted hypolimnion and sediments, and the methane-poor, oxygen-rich epilimnion. Using a combination of experiments and system modelling, we demonstrated that the larvae’s burrowing activities in and out of the sediment perturbed the sediment and reintroduced sequestered phosphorus into the overlying water, thereby exacerbating internal nutrient loading in the water column. Fluxes of sediment methane and other reduced solutes enhanced by the larval bioturbation sustain the hypoxic/anoxic condition below the thermocline. Migrating larvae also directly transported methane in their gas vesicles from the deep water and release it in the surface water, potentially contributing to methane emission to air. As nutrient pollution and climate warming persist or worsen in the coming decades, proliferation of Chaoborus could intensify this positive feedback loop and delay lake recovery. Journal Article Water Research 139 30 37 Elsevier BV 0043-1354 Chaoborus, eutrophication, methane, positive feedback, nutrient internal loading 1 8 2018 2018-08-01 10.1016/j.watres.2018.03.060 COLLEGE NANME Biosciences COLLEGE CODE SBI Swansea University 2020-11-12T20:36:18.5183891 2018-03-26T08:37:42.6138560 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Kam Tang 0000-0001-9427-9564 1 Sabine Flury 2 Dominic Vachon 3 César Ordóñez 4 Daniel F. McGinnis 5 0039194-03042018155329.pdf WRacceptedversion.pdf 2018-04-03T15:53:29.1700000 Output 1536207 application/pdf Accepted Manuscript true 2019-03-27T00:00:00.0000000 Released under the terms of a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND). true eng |
title |
The phantom midge menace: Migratory Chaoborus larvae maintain poor ecosystem state in eutrophic inland waters |
spellingShingle |
The phantom midge menace: Migratory Chaoborus larvae maintain poor ecosystem state in eutrophic inland waters Kam Tang |
title_short |
The phantom midge menace: Migratory Chaoborus larvae maintain poor ecosystem state in eutrophic inland waters |
title_full |
The phantom midge menace: Migratory Chaoborus larvae maintain poor ecosystem state in eutrophic inland waters |
title_fullStr |
The phantom midge menace: Migratory Chaoborus larvae maintain poor ecosystem state in eutrophic inland waters |
title_full_unstemmed |
The phantom midge menace: Migratory Chaoborus larvae maintain poor ecosystem state in eutrophic inland waters |
title_sort |
The phantom midge menace: Migratory Chaoborus larvae maintain poor ecosystem state in eutrophic inland waters |
author_id_str_mv |
69af43a3b9da24aef65c5d3a44956fe3 |
author_id_fullname_str_mv |
69af43a3b9da24aef65c5d3a44956fe3_***_Kam Tang |
author |
Kam Tang |
author2 |
Kam Tang Sabine Flury Dominic Vachon César Ordóñez Daniel F. McGinnis |
format |
Journal article |
container_title |
Water Research |
container_volume |
139 |
container_start_page |
30 |
publishDate |
2018 |
institution |
Swansea University |
issn |
0043-1354 |
doi_str_mv |
10.1016/j.watres.2018.03.060 |
publisher |
Elsevier BV |
college_str |
Faculty of Science and Engineering |
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facultyofscienceandengineering |
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Faculty of Science and Engineering |
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facultyofscienceandengineering |
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Faculty of Science and Engineering |
department_str |
School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences |
document_store_str |
1 |
active_str |
0 |
description |
Chaoborus spp. (phantom midge) are prevalent in eutrophic lakes with methane-rich, oxygen depleted hypolimnion and sediments, and the methane-poor, oxygen-rich epilimnion. Using a combination of experiments and system modelling, we demonstrated that the larvae’s burrowing activities in and out of the sediment perturbed the sediment and reintroduced sequestered phosphorus into the overlying water, thereby exacerbating internal nutrient loading in the water column. Fluxes of sediment methane and other reduced solutes enhanced by the larval bioturbation sustain the hypoxic/anoxic condition below the thermocline. Migrating larvae also directly transported methane in their gas vesicles from the deep water and release it in the surface water, potentially contributing to methane emission to air. As nutrient pollution and climate warming persist or worsen in the coming decades, proliferation of Chaoborus could intensify this positive feedback loop and delay lake recovery. |
published_date |
2018-08-01T03:49:46Z |
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1763752423149535232 |
score |
11.014358 |