Journal article 914 views 103 downloads
Effects of water column processes on the use of sediment traps to measure zooplankton non-predatory mortality: a mathematical and empirical assessment
Olga P Dubovskaya,
Aleksandr P Tolomeev,
Georgiy Kirillin,
Zhanna Buseva,
Kam Tang 
,
Michail I Gladyshev
,
Michail I Gladyshev
Journal of Plankton Research, Volume: 40, Issue: 1, Pages: 91 - 106
Swansea University Author:
Kam Tang
-
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DOI (Published version): 10.1093/plankt/fbx066
Abstract
Zooplankton populations can suffer mass mortality due to non-predatory mortality (NPM) factors, and the resulting carcasses can be captured by sediment traps, or be removed by ingestion, turbulent mixing and microbial degradation in the water column. We presented mathematical formulations to calcula...
| Published in: | Journal of Plankton Research |
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| ISSN: | 0142-7873 1464-3774 |
| Published: |
2018
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa36422 |
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| Abstract: |
Zooplankton populations can suffer mass mortality due to non-predatory mortality (NPM) factors, and the resulting carcasses can be captured by sediment traps, or be removed by ingestion, turbulent mixing and microbial degradation in the water column. We presented mathematical formulations to calculate NPM from sediment trap data by accounting for carcass removal by processes in addition to sinking, and demonstrated their application in Lake Shira, Russia. The estimated NPM values were comparable to physiological death rates. Estimated ingestion by the amphipod Gammarus lacustris could account for the disappearance of carcasses above the traps. Wind-driven turbulence could extend the carcass exposure time to microbial degradation. Collectively, these water column processes facilitate the remineralization of carcasses in the water column, and diminish the carcass carbon flux to the benthos. |
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| College: |
Faculty of Science and Engineering |
| Issue: |
1 |
| Start Page: |
91 |
| End Page: |
106 |