A review of the spatial extent of fishery effects and species vulnerability of the deep-sea demersal fish assemblage of the Porcupine Seabight, Northeast Atlantic Ocean (ICES Subarea VII)

Imants George Priede, Jasmin Annica Godbold, Tomasz Mieczyslaw Niedzielski, Martin Collins, D. M. Bailey, J. D. M. Gordon, A F Zuur

Research output: Contribution to journalLiterature review

26 Citations (Scopus)

Abstract

We review information from scientific trawl surveys carried out between 1977 and 2002 in the Porcupine Seabight and Abyssal Plain area of the Northeast Atlantic (240-4865 m water depth). Since the late 1980s, commercial bottom-trawl fisheries targeting mainly roundnose grenadier (Coryphaenoides rupestris), black scabbardfish (Aphanopus carbo), and orange roughy (Hoplostethus atlanticus) have been operating at depths of 500-1500 m, intersecting the depth ranges of 77 demersal fish species that would therefore be vulnerable to fishery effects. Comparisons of trawls pre-1989 and post-1997 indicate a significant decrease in total abundance of demersal fish down to 2500 m. Detailed analyses of the 15 most-abundant species showed that nine species with depth ranges within the commercial fishing depth have decreased in abundance. Other species were either not affected (Bathypterois dubius) or only affected at the shallow end of their range (Coryphaenoides guentheri). Species with a minimum depth of occurrence >1500 m (Coryphaenoides armatus and Coryphaenoides leptolepis) increased in abundance over part of their depth range. Decreases in abundance are probably caused by commercial fishing activities, an effect that is transmitted downslope by removal of fish at the shallow end of their depth range, resulting in declines at the deeper end of the depth range. The estimated fishery area is ca. 52 000 km(2), but the potential impact probably extends to ca. 142 000 km(2) and to many non-target species.
Original languageEnglish
Pages (from-to)281-289
JournalICES Journal of Marine Science
Volume68
Issue number2
DOIs
Publication statusPublished - Jan 2011

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demersal fish
Atlantic Ocean
marine fish
deep sea
vulnerability
fishery
fisheries
ocean
Hoplostethus atlanticus
fishing
Macrouridae
abyssal plain
bottom trawling
effect
nontarget organisms
targeting
water depth
fish

Keywords

  • Abundance
  • Continental slope
  • fisheries
  • impacts
  • marine protected areas
  • Rockall trough
  • Hoplostethus Atlanticus
  • Orange Roughy
  • New Zealand
  • ecosystems
  • expression
  • management
  • Grenadier

Cite this

A review of the spatial extent of fishery effects and species vulnerability of the deep-sea demersal fish assemblage of the Porcupine Seabight, Northeast Atlantic Ocean (ICES Subarea VII). / Priede, Imants George; Godbold, Jasmin Annica; Niedzielski, Tomasz Mieczyslaw; Collins, Martin; Bailey, D. M.; Gordon, J. D. M.; Zuur, A F .

In: ICES Journal of Marine Science, Vol. 68, No. 2, 01.2011, p. 281-289.

Research output: Contribution to journalLiterature review

Priede, Imants George ; Godbold, Jasmin Annica ; Niedzielski, Tomasz Mieczyslaw ; Collins, Martin ; Bailey, D. M. ; Gordon, J. D. M. ; Zuur, A F . / A review of the spatial extent of fishery effects and species vulnerability of the deep-sea demersal fish assemblage of the Porcupine Seabight, Northeast Atlantic Ocean (ICES Subarea VII). In: ICES Journal of Marine Science. 2011 ; Vol. 68, No. 2. pp. 281-289.
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abstract = "We review information from scientific trawl surveys carried out between 1977 and 2002 in the Porcupine Seabight and Abyssal Plain area of the Northeast Atlantic (240-4865 m water depth). Since the late 1980s, commercial bottom-trawl fisheries targeting mainly roundnose grenadier (Coryphaenoides rupestris), black scabbardfish (Aphanopus carbo), and orange roughy (Hoplostethus atlanticus) have been operating at depths of 500-1500 m, intersecting the depth ranges of 77 demersal fish species that would therefore be vulnerable to fishery effects. Comparisons of trawls pre-1989 and post-1997 indicate a significant decrease in total abundance of demersal fish down to 2500 m. Detailed analyses of the 15 most-abundant species showed that nine species with depth ranges within the commercial fishing depth have decreased in abundance. Other species were either not affected (Bathypterois dubius) or only affected at the shallow end of their range (Coryphaenoides guentheri). Species with a minimum depth of occurrence >1500 m (Coryphaenoides armatus and Coryphaenoides leptolepis) increased in abundance over part of their depth range. Decreases in abundance are probably caused by commercial fishing activities, an effect that is transmitted downslope by removal of fish at the shallow end of their depth range, resulting in declines at the deeper end of the depth range. The estimated fishery area is ca. 52 000 km(2), but the potential impact probably extends to ca. 142 000 km(2) and to many non-target species.",
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AU - Priede, Imants George

AU - Godbold, Jasmin Annica

AU - Niedzielski, Tomasz Mieczyslaw

AU - Collins, Martin

AU - Bailey, D. M.

AU - Gordon, J. D. M.

AU - Zuur, A F

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N2 - We review information from scientific trawl surveys carried out between 1977 and 2002 in the Porcupine Seabight and Abyssal Plain area of the Northeast Atlantic (240-4865 m water depth). Since the late 1980s, commercial bottom-trawl fisheries targeting mainly roundnose grenadier (Coryphaenoides rupestris), black scabbardfish (Aphanopus carbo), and orange roughy (Hoplostethus atlanticus) have been operating at depths of 500-1500 m, intersecting the depth ranges of 77 demersal fish species that would therefore be vulnerable to fishery effects. Comparisons of trawls pre-1989 and post-1997 indicate a significant decrease in total abundance of demersal fish down to 2500 m. Detailed analyses of the 15 most-abundant species showed that nine species with depth ranges within the commercial fishing depth have decreased in abundance. Other species were either not affected (Bathypterois dubius) or only affected at the shallow end of their range (Coryphaenoides guentheri). Species with a minimum depth of occurrence >1500 m (Coryphaenoides armatus and Coryphaenoides leptolepis) increased in abundance over part of their depth range. Decreases in abundance are probably caused by commercial fishing activities, an effect that is transmitted downslope by removal of fish at the shallow end of their depth range, resulting in declines at the deeper end of the depth range. The estimated fishery area is ca. 52 000 km(2), but the potential impact probably extends to ca. 142 000 km(2) and to many non-target species.

AB - We review information from scientific trawl surveys carried out between 1977 and 2002 in the Porcupine Seabight and Abyssal Plain area of the Northeast Atlantic (240-4865 m water depth). Since the late 1980s, commercial bottom-trawl fisheries targeting mainly roundnose grenadier (Coryphaenoides rupestris), black scabbardfish (Aphanopus carbo), and orange roughy (Hoplostethus atlanticus) have been operating at depths of 500-1500 m, intersecting the depth ranges of 77 demersal fish species that would therefore be vulnerable to fishery effects. Comparisons of trawls pre-1989 and post-1997 indicate a significant decrease in total abundance of demersal fish down to 2500 m. Detailed analyses of the 15 most-abundant species showed that nine species with depth ranges within the commercial fishing depth have decreased in abundance. Other species were either not affected (Bathypterois dubius) or only affected at the shallow end of their range (Coryphaenoides guentheri). Species with a minimum depth of occurrence >1500 m (Coryphaenoides armatus and Coryphaenoides leptolepis) increased in abundance over part of their depth range. Decreases in abundance are probably caused by commercial fishing activities, an effect that is transmitted downslope by removal of fish at the shallow end of their depth range, resulting in declines at the deeper end of the depth range. The estimated fishery area is ca. 52 000 km(2), but the potential impact probably extends to ca. 142 000 km(2) and to many non-target species.

KW - Abundance

KW - Continental slope

KW - fisheries

KW - impacts

KW - marine protected areas

KW - Rockall trough

KW - Hoplostethus Atlanticus

KW - Orange Roughy

KW - New Zealand

KW - ecosystems

KW - expression

KW - management

KW - Grenadier

U2 - 10.1093/icesjms/fsq045

DO - 10.1093/icesjms/fsq045

M3 - Literature review

VL - 68

SP - 281

EP - 289

JO - ICES Journal of Marine Science

JF - ICES Journal of Marine Science

SN - 1054-3139

IS - 2

ER -