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The phantom midge menace: Migratory Chaoborus larvae maintain poor ecosystem state in eutrophic inland waters

Kam Tang Orcid Logo, Sabine Flury, Dominic Vachon, César Ordóñez, Daniel F. McGinnis

Water Research, Volume: 139, Pages: 30 - 37

Swansea University Author: Kam Tang Orcid Logo

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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...

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Published in: Water Research
ISSN: 0043-1354
Published: Elsevier BV 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa39194
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first_indexed 2018-03-26T13:31:38Z
last_indexed 2020-11-13T03:52:58Z
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spelling 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
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title 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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score 10.998048

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