Porewater methane transport within the gas vesicles of diurnally migrating Chaoborus spp.
Diurnally-migrating Chaoborus spp. reach populations of up to 130,000 individuals m−2 in lakes up to 70 meters deep on all continents except Antarctica. Linked to eutrophication, migrating Chaoborus spp. dwell in the anoxic sediment during daytime and feed in the oxic surface layer at night. Our exp...
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ftubpotsdam:oai:kobv.de-opus4-uni-potsdam:55200 2023-05-15T13:30:45+02:00 Porewater methane transport within the gas vesicles of diurnally migrating Chaoborus spp. McGinnis, Daniel F. Flury, Sabine Tang, Kam W. Grossart, Hans-Peter F. (Prof. Dr.) 2017-03-14 https://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/55200 https://doi.org/10.1038/srep44478 eng eng https://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/55200 https://doi.org/10.1038/srep44478 https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/closedAccess CC-BY ddc:570 Institut für Biochemie und Biologie article doc-type:article 2017 ftubpotsdam https://doi.org/10.1038/srep44478 2022-08-21T22:37:07Z Diurnally-migrating Chaoborus spp. reach populations of up to 130,000 individuals m−2 in lakes up to 70 meters deep on all continents except Antarctica. Linked to eutrophication, migrating Chaoborus spp. dwell in the anoxic sediment during daytime and feed in the oxic surface layer at night. Our experiments show that by burrowing into the sediment, Chaoborus spp. utilize the high dissolved gas partial pressure of sediment methane to inflate their tracheal sacs. This mechanism provides a significant energetic advantage that allows the larvae to migrate via passive buoyancy rather than more energy-costly swimming. The Chaoborus spp. larvae, in addition to potentially releasing sediment methane bubbles twice a day by entering and leaving the sediment, also transport porewater methane within their gas vesicles into the water column, resulting in a flux of 0.01–2 mol m−2 yr−1 depending on population density and water depth. Chaoborus spp. emerging annually as flies also result in 0.1–6 mol m−2 yr−1 of carbon export from the system. Finding the tipping point in lake eutrophication enabling this methane-powered migration mechanism is crucial for ultimately reconstructing the geographical expansion of Chaoborus spp., and the corresponding shifts in the lake’s biogeochemistry, carbon cycling and food web structure. Article in Journal/Newspaper Antarc* Antarctica University of Potsdam: publish.UP Scientific Reports 7 1 |
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University of Potsdam: publish.UP |
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ftubpotsdam |
language |
English |
topic |
ddc:570 Institut für Biochemie und Biologie |
spellingShingle |
ddc:570 Institut für Biochemie und Biologie McGinnis, Daniel F. Flury, Sabine Tang, Kam W. Grossart, Hans-Peter F. (Prof. Dr.) Porewater methane transport within the gas vesicles of diurnally migrating Chaoborus spp. |
topic_facet |
ddc:570 Institut für Biochemie und Biologie |
description |
Diurnally-migrating Chaoborus spp. reach populations of up to 130,000 individuals m−2 in lakes up to 70 meters deep on all continents except Antarctica. Linked to eutrophication, migrating Chaoborus spp. dwell in the anoxic sediment during daytime and feed in the oxic surface layer at night. Our experiments show that by burrowing into the sediment, Chaoborus spp. utilize the high dissolved gas partial pressure of sediment methane to inflate their tracheal sacs. This mechanism provides a significant energetic advantage that allows the larvae to migrate via passive buoyancy rather than more energy-costly swimming. The Chaoborus spp. larvae, in addition to potentially releasing sediment methane bubbles twice a day by entering and leaving the sediment, also transport porewater methane within their gas vesicles into the water column, resulting in a flux of 0.01–2 mol m−2 yr−1 depending on population density and water depth. Chaoborus spp. emerging annually as flies also result in 0.1–6 mol m−2 yr−1 of carbon export from the system. Finding the tipping point in lake eutrophication enabling this methane-powered migration mechanism is crucial for ultimately reconstructing the geographical expansion of Chaoborus spp., and the corresponding shifts in the lake’s biogeochemistry, carbon cycling and food web structure. |
format |
Article in Journal/Newspaper |
author |
McGinnis, Daniel F. Flury, Sabine Tang, Kam W. Grossart, Hans-Peter F. (Prof. Dr.) |
author_facet |
McGinnis, Daniel F. Flury, Sabine Tang, Kam W. Grossart, Hans-Peter F. (Prof. Dr.) |
author_sort |
McGinnis, Daniel F. |
title |
Porewater methane transport within the gas vesicles of diurnally migrating Chaoborus spp. |
title_short |
Porewater methane transport within the gas vesicles of diurnally migrating Chaoborus spp. |
title_full |
Porewater methane transport within the gas vesicles of diurnally migrating Chaoborus spp. |
title_fullStr |
Porewater methane transport within the gas vesicles of diurnally migrating Chaoborus spp. |
title_full_unstemmed |
Porewater methane transport within the gas vesicles of diurnally migrating Chaoborus spp. |
title_sort |
porewater methane transport within the gas vesicles of diurnally migrating chaoborus spp. |
publishDate |
2017 |
url |
https://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/55200 https://doi.org/10.1038/srep44478 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
https://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/55200 https://doi.org/10.1038/srep44478 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/closedAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/srep44478 |
container_title |
Scientific Reports |
container_volume |
7 |
container_issue |
1 |
_version_ |
1766011760587833344 |