Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 신경훈 | - |
dc.date.accessioned | 2021-09-07T06:20:14Z | - |
dc.date.available | 2021-09-07T06:20:14Z | - |
dc.date.issued | 2020-07 | - |
dc.identifier.citation | FRONTIERS IN MARINE SCIENCE, v. 7, Article no. 489, 10pp | en_US |
dc.identifier.issn | 2296-7745 | - |
dc.identifier.uri | https://www.frontiersin.org/articles/10.3389/fmars.2020.00489/full | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/164809 | - |
dc.description.abstract | In polar ecology, zooplankton diets and survival rates vary according to the seasonality of solar radiation and oceanographic conditions. Each zooplankton species has evolved feeding strategies to survive in the diet-limited conditions of the "polar night." Many zooplankton studies have reported seasonal adaptations in feeding activity during polar night based on their trophic niches. Nitrogen isotope analysis of amino acids has provided improved accuracy in estimates of trophic position (TP) in various marine species. In this study, field work was conducted in Kongsfjorden before (October 2017) and after polar night (April 2018). As representative zooplankton, an amphipod (Themisto abyssorum), euphausids (Meganycitiphanes norvegica and Thysanoessa sp.), a chaetognath (Parasagitta elegans), and copepods (Calanus spp. and Oithona similis) were collected. trophic position values of each taxon were estimated using the nitrogen isotope ratio of glutamic acid (delta N-15(Glu)) and phenylalanine (delta N-15(Phe)). Results showed that TP values of P. elegans were relatively constant, averaging 3.2 in both seasons, likely due to continuous feeding activity during polar night. Trophic position values were also constant for Calanus spp., ranging 2.5-3.0 in both seasons, due to their ability to utilize stored high-energy wax. In contrast, average TP values for O. similis, an omnivorous zooplankton, were 2.9 in October and 2.3 the following April. Trophic position values for O. similis before polar night can be attributed to the relatively high availability of algae during longer periods of daylight. We found that TP variation in zooplankton before and after polar night differed according to feeding activities in diet-restricted circumstances. | en_US |
dc.description.sponsorship | This research was a part of a project titled “Carbon assimilation rate and organic carbon cycle in sea ice-algal ecosystem (PE19170),” which was funded by the Korea Polar Research Institute. We appreciate the contributions of members of the field team in sample collection. The captain of the research vessel (MS Teisten) carefully supported and scheduled our field work. We also thank the Marine Laboratory in Ny-Ålesund, which provided space and equipment for our research. | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | FRONTIERS MEDIA SA | en_US |
dc.subject | trophic position | en_US |
dc.subject | nitrogen isotope | en_US |
dc.subject | amino acid | en_US |
dc.subject | zooplankton | en_US |
dc.subject | Kongsfjorden | en_US |
dc.subject | Svalbard | en_US |
dc.title | Trophic Dynamics of Zooplankton Before and After Polar Night in the Kongsfjorden (Svalbard): Evidence of Trophic Position Estimated by delta N-15 Analysis of Amino Acids | en_US |
dc.type | Article | en_US |
dc.relation.volume | 7 | - |
dc.identifier.doi | 10.3389/fmars.2020.00489 | - |
dc.relation.page | 1-10 | - |
dc.relation.journal | FRONTIERS IN MARINE SCIENCE | - |
dc.contributor.googleauthor | Choi, Hyuntae | - |
dc.contributor.googleauthor | Ha, Sun-Yong | - |
dc.contributor.googleauthor | Lee, Seunghan | - |
dc.contributor.googleauthor | Kim, Jee-Hoon | - |
dc.contributor.googleauthor | Shin, Kyung-Hoon | - |
dc.relation.code | 2020048436 | - |
dc.sector.campus | E | - |
dc.sector.daehak | COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E] | - |
dc.sector.department | DEPARTMENT OF MARINE SCIENCE AND CONVERGENCE ENGINEERING | - |
dc.identifier.pid | shinkh | - |
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