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Copepod secondary production in the sea: Errors due to uneven molting and growth patterns and incidence of carcasses

Sonia Yáñez, Pamela Hidalgo, Paula Ruz, Kam Tang Orcid Logo

Progress in Oceanography, Volume: 165, Pages: 257 - 267

Swansea University Author: Kam Tang Orcid Logo

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DOI (Published version): 10.1016/j.pocean.2018.06.008

Abstract

Copepod secondary production is one of the most fundamental parameters in biological oceanography, but the common approach to estimate this parameter relies on two important, but rarely verified, assumptions: (1) even developmental stage duration and inter-molt growth; (2) all copepods are alive in...

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Published in: Progress in Oceanography
ISSN: 0079-6611
Published: Elsevier BV 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa40801
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first_indexed 2018-06-23T19:33:38Z
last_indexed 2020-11-13T03:54:54Z
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spelling 2020-11-12T20:33:49.8299909 v2 40801 2018-06-23 Copepod secondary production in the sea: Errors due to uneven molting and growth patterns and incidence of carcasses 69af43a3b9da24aef65c5d3a44956fe3 0000-0001-9427-9564 Kam Tang Kam Tang true false 2018-06-23 SBI Copepod secondary production is one of the most fundamental parameters in biological oceanography, but the common approach to estimate this parameter relies on two important, but rarely verified, assumptions: (1) even developmental stage duration and inter-molt growth; (2) all copepods are alive in situ. We conducted a year-long study within the Humboldt Current system to assess the errors in the secondary production estimation of three dominant copepod species when these assumptions are violated. The error varied in magnitude between months and even switched sign (over- vs. under-estimation) in some cases. The errors also varied in magnitude and in sign among developmental stages, reaching nearly 70% over-estimation in some cases. The annual average error was ca. -39% for Paracalanus cf. indicus, 3% for Acartia tonsa, and 5% for Calanus chilensis. Our study showed that careful assessment of species-specific stage duration, inter-stage growth and in situ live/dead abundances is required for more reliable secondary production estimation. Journal Article Progress in Oceanography 165 257 267 Elsevier BV 0079-6611 copepods, secondary production, molting rate, neutral red, Humboldt Current System 1 7 2018 2018-07-01 10.1016/j.pocean.2018.06.008 COLLEGE NANME Biosciences COLLEGE CODE SBI Swansea University 2020-11-12T20:33:49.8299909 2018-06-23T13:35:45.7408783 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Sonia Yáñez 1 Pamela Hidalgo 2 Paula Ruz 3 Kam Tang 0000-0001-9427-9564 4 0040801-23062018133629.pdf Yanezetal_revised_Revision2.pdf 2018-06-23T13:36:29.0470000 Output 1943513 application/pdf Accepted Manuscript true 2019-06-21T00:00:00.0000000 Released under the terms of a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND). true eng https://creativecommons.org/licenses/by-nc-nd/4.0/
title Copepod secondary production in the sea: Errors due to uneven molting and growth patterns and incidence of carcasses
spellingShingle Copepod secondary production in the sea: Errors due to uneven molting and growth patterns and incidence of carcasses
Kam Tang
title_short Copepod secondary production in the sea: Errors due to uneven molting and growth patterns and incidence of carcasses
title_full Copepod secondary production in the sea: Errors due to uneven molting and growth patterns and incidence of carcasses
title_fullStr Copepod secondary production in the sea: Errors due to uneven molting and growth patterns and incidence of carcasses
title_full_unstemmed Copepod secondary production in the sea: Errors due to uneven molting and growth patterns and incidence of carcasses
title_sort Copepod secondary production in the sea: Errors due to uneven molting and growth patterns and incidence of carcasses
author_id_str_mv 69af43a3b9da24aef65c5d3a44956fe3
author_id_fullname_str_mv 69af43a3b9da24aef65c5d3a44956fe3_***_Kam Tang
author Kam Tang
author2 Sonia Yáñez
Pamela Hidalgo
Paula Ruz
Kam Tang
format Journal article
container_title Progress in Oceanography
container_volume 165
container_start_page 257
publishDate 2018
institution Swansea University
issn 0079-6611
doi_str_mv 10.1016/j.pocean.2018.06.008
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 Copepod secondary production is one of the most fundamental parameters in biological oceanography, but the common approach to estimate this parameter relies on two important, but rarely verified, assumptions: (1) even developmental stage duration and inter-molt growth; (2) all copepods are alive in situ. We conducted a year-long study within the Humboldt Current system to assess the errors in the secondary production estimation of three dominant copepod species when these assumptions are violated. The error varied in magnitude between months and even switched sign (over- vs. under-estimation) in some cases. The errors also varied in magnitude and in sign among developmental stages, reaching nearly 70% over-estimation in some cases. The annual average error was ca. -39% for Paracalanus cf. indicus, 3% for Acartia tonsa, and 5% for Calanus chilensis. Our study showed that careful assessment of species-specific stage duration, inter-stage growth and in situ live/dead abundances is required for more reliable secondary production estimation.
published_date 2018-07-01T03:51:57Z
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score 11.014358

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