Abundance, distribution and diversity of gelatinous predators along the northern Mid-Atlantic Ridge: A comparison of different sampling methodologies
The diversity and distribution of gelatinous zooplankton were investigated along the northern Mid-Atlantic Ridge (MAR) from June to August 2004.Here, we present results from macrozooplankton trawl sampling, as well as comparisons made between five different methodologies that were employed during th...
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Online Access: | https://hdl.handle.net/1956/17044 https://doi.org/10.1371/journal.pone.0187491 |
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ftunivbergen:oai:bora.uib.no:1956/17044 2023-05-15T16:52:17+02:00 Abundance, distribution and diversity of gelatinous predators along the northern Mid-Atlantic Ridge: A comparison of different sampling methodologies Hosia, Aino Falkenhaug, Tone Baxter, Emily J. Pages, Fransesc 2017-11-23T16:03:09Z application/pdf https://hdl.handle.net/1956/17044 https://doi.org/10.1371/journal.pone.0187491 eng eng PLOS Norges forskningsråd: 248799 Artsdatabanken: 70184233 Norges forskningsråd: 146994 Artsdatabanken: 70184215 urn:issn:1932-6203 https://hdl.handle.net/1956/17044 https://doi.org/10.1371/journal.pone.0187491 cristin:1517873 Attribution CC BY http://creativecommons.org/licenses/by/4.0 Copyright 2017 The Author(s) PLoS ONE Peer reviewed Journal article 2017 ftunivbergen https://doi.org/10.1371/journal.pone.0187491 2023-03-14T17:43:04Z The diversity and distribution of gelatinous zooplankton were investigated along the northern Mid-Atlantic Ridge (MAR) from June to August 2004.Here, we present results from macrozooplankton trawl sampling, as well as comparisons made between five different methodologies that were employed during the MAR-ECO survey. In total, 16 species of hydromedusae, 31 species of siphonophores and four species of scyphozoans were identified to species level from macrozooplankton trawl samples. Additional taxa were identified to higher taxonomic levels and a single ctenophore genus was observed. Samples were collected at 17 stations along the MAR between the Azores and Iceland. A divergence in the species assemblages was observed at the southern limit of the Subpolar Frontal Zone. The catch composition of gelatinous zooplankton is compared between different sampling methodologies including: a macrozooplankton trawl; a Multinet; a ringnet attached to bottom trawl; and optical platforms (Underwater Video Profiler (UVP) & Remotely Operated Vehicle (ROV)). Different sampling methodologies are shown to exhibit selectivity towards different groups of gelatinous zooplankton. Only ~21% of taxa caught during the survey were caught by both the macrozooplankton trawl and the Multinet when deployed at the same station. The estimates of gelatinous zooplankton abundance calculated using these two gear types also varied widely (1.4 ± 0.9 individuals 1000 m-3 estimated by the macrozooplankton trawl vs. 468.3 ± 315.4 individuals 1000 m-3 estimated by the Multinet (mean ± s.d.) when used at the same stations (n = 6). While it appears that traditional net sampling can generate useful data on pelagic cnidarians, comparisons with results from the optical platforms suggest that ctenophore diversity and abundance are consistently underestimated, particularly when net sampling is conducted in combination with formalin fixation. The results emphasise the importance of considering sampling methodology both when planning surveys, as well as when ... Article in Journal/Newspaper Iceland University of Bergen: Bergen Open Research Archive (BORA-UiB) Mid-Atlantic Ridge PLOS ONE 12 11 e0187491 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
description |
The diversity and distribution of gelatinous zooplankton were investigated along the northern Mid-Atlantic Ridge (MAR) from June to August 2004.Here, we present results from macrozooplankton trawl sampling, as well as comparisons made between five different methodologies that were employed during the MAR-ECO survey. In total, 16 species of hydromedusae, 31 species of siphonophores and four species of scyphozoans were identified to species level from macrozooplankton trawl samples. Additional taxa were identified to higher taxonomic levels and a single ctenophore genus was observed. Samples were collected at 17 stations along the MAR between the Azores and Iceland. A divergence in the species assemblages was observed at the southern limit of the Subpolar Frontal Zone. The catch composition of gelatinous zooplankton is compared between different sampling methodologies including: a macrozooplankton trawl; a Multinet; a ringnet attached to bottom trawl; and optical platforms (Underwater Video Profiler (UVP) & Remotely Operated Vehicle (ROV)). Different sampling methodologies are shown to exhibit selectivity towards different groups of gelatinous zooplankton. Only ~21% of taxa caught during the survey were caught by both the macrozooplankton trawl and the Multinet when deployed at the same station. The estimates of gelatinous zooplankton abundance calculated using these two gear types also varied widely (1.4 ± 0.9 individuals 1000 m-3 estimated by the macrozooplankton trawl vs. 468.3 ± 315.4 individuals 1000 m-3 estimated by the Multinet (mean ± s.d.) when used at the same stations (n = 6). While it appears that traditional net sampling can generate useful data on pelagic cnidarians, comparisons with results from the optical platforms suggest that ctenophore diversity and abundance are consistently underestimated, particularly when net sampling is conducted in combination with formalin fixation. The results emphasise the importance of considering sampling methodology both when planning surveys, as well as when ... |
format |
Article in Journal/Newspaper |
author |
Hosia, Aino Falkenhaug, Tone Baxter, Emily J. Pages, Fransesc |
spellingShingle |
Hosia, Aino Falkenhaug, Tone Baxter, Emily J. Pages, Fransesc Abundance, distribution and diversity of gelatinous predators along the northern Mid-Atlantic Ridge: A comparison of different sampling methodologies |
author_facet |
Hosia, Aino Falkenhaug, Tone Baxter, Emily J. Pages, Fransesc |
author_sort |
Hosia, Aino |
title |
Abundance, distribution and diversity of gelatinous predators along the northern Mid-Atlantic Ridge: A comparison of different sampling methodologies |
title_short |
Abundance, distribution and diversity of gelatinous predators along the northern Mid-Atlantic Ridge: A comparison of different sampling methodologies |
title_full |
Abundance, distribution and diversity of gelatinous predators along the northern Mid-Atlantic Ridge: A comparison of different sampling methodologies |
title_fullStr |
Abundance, distribution and diversity of gelatinous predators along the northern Mid-Atlantic Ridge: A comparison of different sampling methodologies |
title_full_unstemmed |
Abundance, distribution and diversity of gelatinous predators along the northern Mid-Atlantic Ridge: A comparison of different sampling methodologies |
title_sort |
abundance, distribution and diversity of gelatinous predators along the northern mid-atlantic ridge: a comparison of different sampling methodologies |
publisher |
PLOS |
publishDate |
2017 |
url |
https://hdl.handle.net/1956/17044 https://doi.org/10.1371/journal.pone.0187491 |
geographic |
Mid-Atlantic Ridge |
geographic_facet |
Mid-Atlantic Ridge |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
PLoS ONE |
op_relation |
Norges forskningsråd: 248799 Artsdatabanken: 70184233 Norges forskningsråd: 146994 Artsdatabanken: 70184215 urn:issn:1932-6203 https://hdl.handle.net/1956/17044 https://doi.org/10.1371/journal.pone.0187491 cristin:1517873 |
op_rights |
Attribution CC BY http://creativecommons.org/licenses/by/4.0 Copyright 2017 The Author(s) |
op_doi |
https://doi.org/10.1371/journal.pone.0187491 |
container_title |
PLOS ONE |
container_volume |
12 |
container_issue |
11 |
container_start_page |
e0187491 |
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1766042427576025088 |