Distribution of siphonophores in the Northwest Pacific Ocean and links to environmental conditions
Despite their abundance in marine ecosystems, studies on siphonophores are limited. In this study, 26 species of siphonophores in the Northwest Pacific Ocean were identified during multiple cruises of the R/V ISABU from 2018–2020, and various factors that may affect the occurrence of siphonophores,...
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2023
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Online Access: | https://doi.org/10.3389/fmars.2023.1223477 https://doaj.org/article/109901de370747dc8832ae33816bc2a2 |
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ftdoajarticles:oai:doaj.org/article:109901de370747dc8832ae33816bc2a2 2023-10-09T21:56:29+02:00 Distribution of siphonophores in the Northwest Pacific Ocean and links to environmental conditions Nayeon Park Hyuntae Choi Kyung-Hoon Shin Wonchoel Lee 2023-09-01T00:00:00Z https://doi.org/10.3389/fmars.2023.1223477 https://doaj.org/article/109901de370747dc8832ae33816bc2a2 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fmars.2023.1223477/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2023.1223477 https://doaj.org/article/109901de370747dc8832ae33816bc2a2 Frontiers in Marine Science, Vol 10 (2023) biodiversity gelatinous zooplankton indicator species Kuroshio Extension siphonophore stable isotope Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2023 ftdoajarticles https://doi.org/10.3389/fmars.2023.1223477 2023-09-24T00:42:31Z Despite their abundance in marine ecosystems, studies on siphonophores are limited. In this study, 26 species of siphonophores in the Northwest Pacific Ocean were identified during multiple cruises of the R/V ISABU from 2018–2020, and various factors that may affect the occurrence of siphonophores, including water temperature, salinity, zooplankton biomass, and trophic niche were investigated. Statistical analysis revealed that the distribution of siphonophores and their biomass could be divided into two water mass groups, affected by the Kuroshio and Oyashio Currents. The species with high contributions to distinguishing the water mass groups (including Chelophyes contorta, Dimophyes arctica, Bassia bassensis, and Eudoxoides spiralis—mainly belonging to the Diphyidae) showed species-specific correlations with water temperature and salinity. This suggests that diphyids can be used as indicator species for currents and hydrological factors that influence water mass. The biomass of siphonophores exhibited a trend opposite to that of non-gelatinous zooplankton and showed no association with other gelatinous zooplankton. These results can be interpreted from an ecological niche perspective. Through nitrogen and carbon stable isotope analyses, the dietary sources of siphonophores could potentially overlap with those of chaetognaths or non-gelatinous zooplankton. Because the trophic position of siphonophores (2.4–3.2) also falls in the range of those of chaetognaths (2.8–3.4) and non-gelatinous zooplankton including copepods, euphausiids, and amphipods (2.4–3.5), diet competition with carnivorous mesozooplankton could be predicted. Considering that the diversity and biomass of most siphonophores are strongly positively correlated with water temperature and salinity, expansion of the Kuroshio Current is expected to lead to an increase in siphonophores in the Northwest Pacific in the future. The findings of this study are anticipated to provide novel insights into climate change prediction and response and enhance our ... Article in Journal/Newspaper Zooplankton Copepods Directory of Open Access Journals: DOAJ Articles Oyashio ENVELOPE(157.000,157.000,50.000,50.000) Pacific Frontiers in Marine Science 10 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
biodiversity gelatinous zooplankton indicator species Kuroshio Extension siphonophore stable isotope Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
biodiversity gelatinous zooplankton indicator species Kuroshio Extension siphonophore stable isotope Science Q General. Including nature conservation geographical distribution QH1-199.5 Nayeon Park Hyuntae Choi Kyung-Hoon Shin Wonchoel Lee Distribution of siphonophores in the Northwest Pacific Ocean and links to environmental conditions |
topic_facet |
biodiversity gelatinous zooplankton indicator species Kuroshio Extension siphonophore stable isotope Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
Despite their abundance in marine ecosystems, studies on siphonophores are limited. In this study, 26 species of siphonophores in the Northwest Pacific Ocean were identified during multiple cruises of the R/V ISABU from 2018–2020, and various factors that may affect the occurrence of siphonophores, including water temperature, salinity, zooplankton biomass, and trophic niche were investigated. Statistical analysis revealed that the distribution of siphonophores and their biomass could be divided into two water mass groups, affected by the Kuroshio and Oyashio Currents. The species with high contributions to distinguishing the water mass groups (including Chelophyes contorta, Dimophyes arctica, Bassia bassensis, and Eudoxoides spiralis—mainly belonging to the Diphyidae) showed species-specific correlations with water temperature and salinity. This suggests that diphyids can be used as indicator species for currents and hydrological factors that influence water mass. The biomass of siphonophores exhibited a trend opposite to that of non-gelatinous zooplankton and showed no association with other gelatinous zooplankton. These results can be interpreted from an ecological niche perspective. Through nitrogen and carbon stable isotope analyses, the dietary sources of siphonophores could potentially overlap with those of chaetognaths or non-gelatinous zooplankton. Because the trophic position of siphonophores (2.4–3.2) also falls in the range of those of chaetognaths (2.8–3.4) and non-gelatinous zooplankton including copepods, euphausiids, and amphipods (2.4–3.5), diet competition with carnivorous mesozooplankton could be predicted. Considering that the diversity and biomass of most siphonophores are strongly positively correlated with water temperature and salinity, expansion of the Kuroshio Current is expected to lead to an increase in siphonophores in the Northwest Pacific in the future. The findings of this study are anticipated to provide novel insights into climate change prediction and response and enhance our ... |
format |
Article in Journal/Newspaper |
author |
Nayeon Park Hyuntae Choi Kyung-Hoon Shin Wonchoel Lee |
author_facet |
Nayeon Park Hyuntae Choi Kyung-Hoon Shin Wonchoel Lee |
author_sort |
Nayeon Park |
title |
Distribution of siphonophores in the Northwest Pacific Ocean and links to environmental conditions |
title_short |
Distribution of siphonophores in the Northwest Pacific Ocean and links to environmental conditions |
title_full |
Distribution of siphonophores in the Northwest Pacific Ocean and links to environmental conditions |
title_fullStr |
Distribution of siphonophores in the Northwest Pacific Ocean and links to environmental conditions |
title_full_unstemmed |
Distribution of siphonophores in the Northwest Pacific Ocean and links to environmental conditions |
title_sort |
distribution of siphonophores in the northwest pacific ocean and links to environmental conditions |
publisher |
Frontiers Media S.A. |
publishDate |
2023 |
url |
https://doi.org/10.3389/fmars.2023.1223477 https://doaj.org/article/109901de370747dc8832ae33816bc2a2 |
long_lat |
ENVELOPE(157.000,157.000,50.000,50.000) |
geographic |
Oyashio Pacific |
geographic_facet |
Oyashio Pacific |
genre |
Zooplankton Copepods |
genre_facet |
Zooplankton Copepods |
op_source |
Frontiers in Marine Science, Vol 10 (2023) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fmars.2023.1223477/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2023.1223477 https://doaj.org/article/109901de370747dc8832ae33816bc2a2 |
op_doi |
https://doi.org/10.3389/fmars.2023.1223477 |
container_title |
Frontiers in Marine Science |
container_volume |
10 |
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1779321240854462464 |