Population dynamics and production of the small copepod Oithona spp. in a subarctic fjord of West Greenland
The small cyclopoid copepod Oithona is widely occurring in polar areas; however, knowledge of its biology and ecology is very limited. Here, we investigate the population dynamics, vertical distribution, and reproductive characteristics of Oithona spp. from late winter to summer, in a subarctic fjor...
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Language: | English |
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2014
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ftdtupubl:oai:pure.atira.dk:publications/a100fe8e-43b5-4c00-b468-6905be090546 2024-09-15T18:09:31+00:00 Population dynamics and production of the small copepod Oithona spp. in a subarctic fjord of West Greenland Zamora-Terol, Sara Kjellerup, Sanne Swalethorp, Rasmus Saiz, Enric 2014 https://orbit.dtu.dk/en/publications/a100fe8e-43b5-4c00-b468-6905be090546 https://doi.org/10.1007/s00300-014-1493-y eng eng https://orbit.dtu.dk/en/publications/a100fe8e-43b5-4c00-b468-6905be090546 info:eu-repo/semantics/closedAccess Zamora-Terol , S , Kjellerup , S , Swalethorp , R & Saiz , E 2014 , ' Population dynamics and production of the small copepod Oithona spp. in a subarctic fjord of West Greenland ' , Polar Biology , vol. 37 , no. 7 , pp. 953-965 . https://doi.org/10.1007/s00300-014-1493-y article 2014 ftdtupubl https://doi.org/10.1007/s00300-014-1493-y 2024-07-22T23:50:05Z The small cyclopoid copepod Oithona is widely occurring in polar areas; however, knowledge of its biology and ecology is very limited. Here, we investigate the population dynamics, vertical distribution, and reproductive characteristics of Oithona spp. from late winter to summer, in a subarctic fjord of West Greenland. During winter–early spring, the abundance of Oithona spp. was low (1.8 9 103 ind. m-2) and the population was mainly composed of late copepodites and adults, whereas in summer, abundance peaked and younger stages dominated (1.1 9 106 ind. m-2). In general, all stages of Oithona spp. remained in the upper 100 m, with nauplii exhibiting a shallower distribution. Although no general seasonal migration was found, a deeper distribution of the adult females in winter was observed. The mean clutch size of Oithona spp. varied from 16 to 30 eggs per female, peaking in summer. Egg production rates (EPR) were low in winter–early spring (0.13 ± 0.03 eggs female-1 day-1) and reached maximum values in summer (1.6 ± 0.45 eggs female-1 day-1). EPR of Oithona spp. showed a significantly positive relationship with both temperature and protozooplankton biomass, and the development of the population seemed to be appreciably affected by temperature. Oithona spp. remained active throughout the study, stressing the key importance of these small copepods in high-latitude ecosystems, especially in periods when larger copepods are not present in the surface layer Article in Journal/Newspaper Greenland Polar Biology Subarctic Copepods Technical University of Denmark: DTU Orbit Polar Biology 37 7 953 965 |
institution |
Open Polar |
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Technical University of Denmark: DTU Orbit |
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ftdtupubl |
language |
English |
description |
The small cyclopoid copepod Oithona is widely occurring in polar areas; however, knowledge of its biology and ecology is very limited. Here, we investigate the population dynamics, vertical distribution, and reproductive characteristics of Oithona spp. from late winter to summer, in a subarctic fjord of West Greenland. During winter–early spring, the abundance of Oithona spp. was low (1.8 9 103 ind. m-2) and the population was mainly composed of late copepodites and adults, whereas in summer, abundance peaked and younger stages dominated (1.1 9 106 ind. m-2). In general, all stages of Oithona spp. remained in the upper 100 m, with nauplii exhibiting a shallower distribution. Although no general seasonal migration was found, a deeper distribution of the adult females in winter was observed. The mean clutch size of Oithona spp. varied from 16 to 30 eggs per female, peaking in summer. Egg production rates (EPR) were low in winter–early spring (0.13 ± 0.03 eggs female-1 day-1) and reached maximum values in summer (1.6 ± 0.45 eggs female-1 day-1). EPR of Oithona spp. showed a significantly positive relationship with both temperature and protozooplankton biomass, and the development of the population seemed to be appreciably affected by temperature. Oithona spp. remained active throughout the study, stressing the key importance of these small copepods in high-latitude ecosystems, especially in periods when larger copepods are not present in the surface layer |
format |
Article in Journal/Newspaper |
author |
Zamora-Terol, Sara Kjellerup, Sanne Swalethorp, Rasmus Saiz, Enric |
spellingShingle |
Zamora-Terol, Sara Kjellerup, Sanne Swalethorp, Rasmus Saiz, Enric Population dynamics and production of the small copepod Oithona spp. in a subarctic fjord of West Greenland |
author_facet |
Zamora-Terol, Sara Kjellerup, Sanne Swalethorp, Rasmus Saiz, Enric |
author_sort |
Zamora-Terol, Sara |
title |
Population dynamics and production of the small copepod Oithona spp. in a subarctic fjord of West Greenland |
title_short |
Population dynamics and production of the small copepod Oithona spp. in a subarctic fjord of West Greenland |
title_full |
Population dynamics and production of the small copepod Oithona spp. in a subarctic fjord of West Greenland |
title_fullStr |
Population dynamics and production of the small copepod Oithona spp. in a subarctic fjord of West Greenland |
title_full_unstemmed |
Population dynamics and production of the small copepod Oithona spp. in a subarctic fjord of West Greenland |
title_sort |
population dynamics and production of the small copepod oithona spp. in a subarctic fjord of west greenland |
publishDate |
2014 |
url |
https://orbit.dtu.dk/en/publications/a100fe8e-43b5-4c00-b468-6905be090546 https://doi.org/10.1007/s00300-014-1493-y |
genre |
Greenland Polar Biology Subarctic Copepods |
genre_facet |
Greenland Polar Biology Subarctic Copepods |
op_source |
Zamora-Terol , S , Kjellerup , S , Swalethorp , R & Saiz , E 2014 , ' Population dynamics and production of the small copepod Oithona spp. in a subarctic fjord of West Greenland ' , Polar Biology , vol. 37 , no. 7 , pp. 953-965 . https://doi.org/10.1007/s00300-014-1493-y |
op_relation |
https://orbit.dtu.dk/en/publications/a100fe8e-43b5-4c00-b468-6905be090546 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1007/s00300-014-1493-y |
container_title |
Polar Biology |
container_volume |
37 |
container_issue |
7 |
container_start_page |
953 |
op_container_end_page |
965 |
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1810447084755615744 |