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Dead heat: copepod carcass occurrence along the Japanese coasts and implications for a warming ocean

K W Tang, J A Ivory, S Shimode, Y Nishibe, K Takahashi, Kam Tang Orcid Logo

ICES Journal of Marine Science

Swansea University Author: Kam Tang Orcid Logo

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DOI (Published version): 10.1093/icesjms/fsz017

Abstract

Global warming may increase marine zooplankton non-predation mortality with significant ramifications for marine resource management and fisheries. This is particularly important for Japan where the coastal water temperature has been increasing faster than the global average in the past decade. We s...

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Published in: ICES Journal of Marine Science
ISSN: 1054-3139 1095-9289
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa48153
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first_indexed 2019-01-14T14:01:32Z
last_indexed 2019-03-04T14:00:05Z
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spelling 2019-03-04T09:53:37.9968086 v2 48153 2019-01-14 Dead heat: copepod carcass occurrence along the Japanese coasts and implications for a warming ocean 69af43a3b9da24aef65c5d3a44956fe3 0000-0001-9427-9564 Kam Tang Kam Tang true false 2019-01-14 SBI Global warming may increase marine zooplankton non-predation mortality with significant ramifications for marine resource management and fisheries. This is particularly important for Japan where the coastal water temperature has been increasing faster than the global average in the past decade. We showed that marine copepod carcasses were ubiquitous along a latitudinal gradient of 34‒39 °N of the Japanese coasts. An average of 4.4‒18.1% of the main copepod genera (Acartia, Paracalanus, Oithona and Pseudocalanus) were carcasses in situ, with higher fractions of dead copepods occurring at higher water temperatures, implicating temperature-dependent non-predation mortality. Carcass occurrence represent a potential diversion of zooplankton production from the traditional predation-based food chain. On average 49.5% of the carcass carbon would be remineralised by bacteria in the water column, with the remainder potentially exported to the seafloor. Continuous warming in the Japanese coasts is expected to accelerate non-predation copepod mortality, with potentially negative consequences for the local marine food web. Journal Article ICES Journal of Marine Science 1054-3139 1095-9289 Marine copepods, vital status, non-predation mortality, global warming, carcass decomposition 31 12 2019 2019-12-31 10.1093/icesjms/fsz017 COLLEGE NANME Biosciences COLLEGE CODE SBI Swansea University 2019-03-04T09:53:37.9968086 2019-01-14T09:14:13.9155294 K W Tang 1 J A Ivory 2 S Shimode 3 Y Nishibe 4 K Takahashi 5 Kam Tang 0000-0001-9427-9564 6 0048153-14012019091623.pdf icesjms_authorsfinal.pdf 2019-01-14T09:16:23.8030000 Output 773325 application/pdf Accepted Manuscript true 2020-03-01T00:00:00.0000000 true eng
title Dead heat: copepod carcass occurrence along the Japanese coasts and implications for a warming ocean
spellingShingle Dead heat: copepod carcass occurrence along the Japanese coasts and implications for a warming ocean
Kam Tang
title_short Dead heat: copepod carcass occurrence along the Japanese coasts and implications for a warming ocean
title_full Dead heat: copepod carcass occurrence along the Japanese coasts and implications for a warming ocean
title_fullStr Dead heat: copepod carcass occurrence along the Japanese coasts and implications for a warming ocean
title_full_unstemmed Dead heat: copepod carcass occurrence along the Japanese coasts and implications for a warming ocean
title_sort Dead heat: copepod carcass occurrence along the Japanese coasts and implications for a warming ocean
author_id_str_mv 69af43a3b9da24aef65c5d3a44956fe3
author_id_fullname_str_mv 69af43a3b9da24aef65c5d3a44956fe3_***_Kam Tang
author Kam Tang
author2 K W Tang
J A Ivory
S Shimode
Y Nishibe
K Takahashi
Kam Tang
format Journal article
container_title ICES Journal of Marine Science
publishDate 2019
institution Swansea University
issn 1054-3139
1095-9289
doi_str_mv 10.1093/icesjms/fsz017
document_store_str 1
active_str 0
description Global warming may increase marine zooplankton non-predation mortality with significant ramifications for marine resource management and fisheries. This is particularly important for Japan where the coastal water temperature has been increasing faster than the global average in the past decade. We showed that marine copepod carcasses were ubiquitous along a latitudinal gradient of 34‒39 °N of the Japanese coasts. An average of 4.4‒18.1% of the main copepod genera (Acartia, Paracalanus, Oithona and Pseudocalanus) were carcasses in situ, with higher fractions of dead copepods occurring at higher water temperatures, implicating temperature-dependent non-predation mortality. Carcass occurrence represent a potential diversion of zooplankton production from the traditional predation-based food chain. On average 49.5% of the carcass carbon would be remineralised by bacteria in the water column, with the remainder potentially exported to the seafloor. Continuous warming in the Japanese coasts is expected to accelerate non-predation copepod mortality, with potentially negative consequences for the local marine food web.
published_date 2019-12-31T04:15:03Z
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score 10.871481