Deep-pelagic (0–3000m) fish assemblage structure over the Mid-Atlantic Ridge in the area of the Charlie-Gibbs Fracture Zone.
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| Title: | Deep-pelagic (0–3000m) fish assemblage structure over the Mid-Atlantic Ridge in the area of the Charlie-Gibbs Fracture Zone. |
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| Authors: | Cook, April B.1 acook@vims.edu, Sutton, Tracey T.1, Galbraith, John K.2, Vecchione, Michael3 |
| Source: | Deep-Sea Research Part II, Topical Studies in Oceanography. Dec2013, Vol. 98, p279-291. 13p. |
| Subjects: | Pelagic fishes, Submarine fracture zones, Fish populations, Ecosystems, Marine biodiversity |
| Geographic Terms: | Mid-Atlantic Ridge |
| Abstract: | Abstract: Only a miniscule fraction of the world’s largest volume of living space, the ocean’s midwater biome, has ever been sampled. As part of the International Census of Marine Life field project on Mid-Atlantic Ridge ecosystems (MAR-ECO), a discrete-depth trawling survey was conducted in 2009 aboard the NOAA FSV Henry B. Bigelow to examine the pelagic faunal assemblage structure and distribution over the Charlie-Gibbs Fracture Zone (CGFZ) of the northern Mid-Atlantic Ridge. Day/night sampling at closely spaced stations allowed the first characterization of diel vertical migration of pelagic nekton over the MAR-ECO study area. Discrete-depth sampling from 0–3000m was conducted using a Norwegian “Krill” trawl with five codends that were opened and closed via a pre-programmed timer. Seventy-five species of fish were collected, with a maximum diversity and biomass observed between depths of 700–1900m. A gradient in sea-surface temperature and underlying watermasses, from northwest to southeast, was mirrored by a similar gradient in ichthyofaunal diversity. Using multivariate analyses, eight deep-pelagic fish assemblages were identified, with depth as the primary discriminatory variable. Strong diel vertical migration (DVM) of the mesopelagic fauna was a prevalent feature of the study area, though the numerically dominant fish, Cyclothone microdon (Gonostomatidae), exhibited a broad (0–3000m) vertical distribution and did not appear to migrate on a diel basis. Three patterns of vertical distribution were observed in the study area: (a) DVM of mesopelagic, and possibly bathypelagic, taxa; (b) broad vertical distribution spanning meso- and bathypelagic depths; and (c) discrete vertical distribution within a limited depth range. Overall species composition and rank order of abundance of fish species agreed with two previous expeditions to the CGFZ (1982–1983 and 2004), suggesting some long-term consistency in the ichthyofaunal composition of the study area, at least in the summer. Frequent captures of putative bathypelagic fishes, shrimps, and cephalopods in the epipelagic zone (0–200m) were confirmed. The results of this expedition reveal distributional patterns unlike those previously reported for open-ocean ecosystems, with the implication of increased transfer efficiency of surface production to great depths in the mid-North Atlantic. [Copyright &y& Elsevier] |
| Copyright of Deep-Sea Research Part II, Topical Studies in Oceanography is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 92512462 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Deep-pelagic (0–3000m) fish assemblage structure over the Mid-Atlantic Ridge in the area of the Charlie-Gibbs Fracture Zone. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Cook%2C+April+B%2E%22">Cook, April B.</searchLink><relatesTo>1</relatesTo><i> acook@vims.edu</i><br /><searchLink fieldCode="AR" term="%22Sutton%2C+Tracey+T%2E%22">Sutton, Tracey T.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Galbraith%2C+John+K%2E%22">Galbraith, John K.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Vecchione%2C+Michael%22">Vecchione, Michael</searchLink><relatesTo>3</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Deep-Sea+Research+Part+II%2C+Topical+Studies+in+Oceanography%22">Deep-Sea Research Part II, Topical Studies in Oceanography</searchLink>. Dec2013, Vol. 98, p279-291. 13p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Pelagic+fishes%22">Pelagic fishes</searchLink><br /><searchLink fieldCode="DE" term="%22Submarine+fracture+zones%22">Submarine fracture zones</searchLink><br /><searchLink fieldCode="DE" term="%22Fish+populations%22">Fish populations</searchLink><br /><searchLink fieldCode="DE" term="%22Ecosystems%22">Ecosystems</searchLink><br /><searchLink fieldCode="DE" term="%22Marine+biodiversity%22">Marine biodiversity</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Mid-Atlantic+Ridge%22">Mid-Atlantic Ridge</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: Only a miniscule fraction of the world’s largest volume of living space, the ocean’s midwater biome, has ever been sampled. As part of the International Census of Marine Life field project on Mid-Atlantic Ridge ecosystems (MAR-ECO), a discrete-depth trawling survey was conducted in 2009 aboard the NOAA FSV Henry B. Bigelow to examine the pelagic faunal assemblage structure and distribution over the Charlie-Gibbs Fracture Zone (CGFZ) of the northern Mid-Atlantic Ridge. Day/night sampling at closely spaced stations allowed the first characterization of diel vertical migration of pelagic nekton over the MAR-ECO study area. Discrete-depth sampling from 0–3000m was conducted using a Norwegian “Krill” trawl with five codends that were opened and closed via a pre-programmed timer. Seventy-five species of fish were collected, with a maximum diversity and biomass observed between depths of 700–1900m. A gradient in sea-surface temperature and underlying watermasses, from northwest to southeast, was mirrored by a similar gradient in ichthyofaunal diversity. Using multivariate analyses, eight deep-pelagic fish assemblages were identified, with depth as the primary discriminatory variable. Strong diel vertical migration (DVM) of the mesopelagic fauna was a prevalent feature of the study area, though the numerically dominant fish, Cyclothone microdon (Gonostomatidae), exhibited a broad (0–3000m) vertical distribution and did not appear to migrate on a diel basis. Three patterns of vertical distribution were observed in the study area: (a) DVM of mesopelagic, and possibly bathypelagic, taxa; (b) broad vertical distribution spanning meso- and bathypelagic depths; and (c) discrete vertical distribution within a limited depth range. Overall species composition and rank order of abundance of fish species agreed with two previous expeditions to the CGFZ (1982–1983 and 2004), suggesting some long-term consistency in the ichthyofaunal composition of the study area, at least in the summer. Frequent captures of putative bathypelagic fishes, shrimps, and cephalopods in the epipelagic zone (0–200m) were confirmed. The results of this expedition reveal distributional patterns unlike those previously reported for open-ocean ecosystems, with the implication of increased transfer efficiency of surface production to great depths in the mid-North Atlantic. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Deep-Sea Research Part II, Topical Studies in Oceanography is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.dsr2.2012.09.003 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 13 StartPage: 279 Subjects: – SubjectFull: Pelagic fishes Type: general – SubjectFull: Submarine fracture zones Type: general – SubjectFull: Fish populations Type: general – SubjectFull: Ecosystems Type: general – SubjectFull: Marine biodiversity Type: general – SubjectFull: Mid-Atlantic Ridge Type: general Titles: – TitleFull: Deep-pelagic (0–3000m) fish assemblage structure over the Mid-Atlantic Ridge in the area of the Charlie-Gibbs Fracture Zone. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Cook, April B. – PersonEntity: Name: NameFull: Sutton, Tracey T. – PersonEntity: Name: NameFull: Galbraith, John K. – PersonEntity: Name: NameFull: Vecchione, Michael IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 12 Text: Dec2013 Type: published Y: 2013 Identifiers: – Type: issn-print Value: 09670645 Numbering: – Type: volume Value: 98 Titles: – TitleFull: Deep-Sea Research Part II, Topical Studies in Oceanography Type: main |
| ResultId | 1 |
