Remotely sensed mesoscale oceanography and the distribution of lllex argentinus in the South Atlantic

C. M. Waluda, P. G. Rodhouse, P. N. Trathan, Graham John Pierce

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

In this study, we consider the influence of mesoscale oceanographic processes around the Falkland Islands (Islas Malvinas) in the South-west Atlantic, during the period in which the commercial squid fishery for Illex argentinus operates. Spatially referenced fishery data and satellite-derived advanced very high resolution radiometry (AVHRR) sea surface temperature (SST) data were examined using geographic information system (GIS) techniques. The distribution and relative abundance of I. argentinus in the Falkland Islands fishery was examined for the period 1989-96. Three consistent areas of high abundance were observed to the north-east (shelf-break region) and north-west (shelf region) of the islands, and close to the northern coast of East Falkland. Areas of high sea surface temperature gradients (thermal gradients) extracted from remotely sensed satellite images were used as an indicator of mesoscale oceanographic activity and compared with the location of the fishery. I. argentinus were found to be associated with areas of thermal gradients, commonly seen at the interface of Falkland Current and Patagonian shelf waters. The techniques used in this analysis allow the overlay and analysis of physical oceanographic and fishery data with potential applications in fisheries management and operational fisheries oceanography.

Original languageEnglish
Pages (from-to)207-216
Number of pages9
JournalFisheries Oceanography
Volume10
DOIs
Publication statusPublished - 2001

Keywords

  • geographic information system
  • Illex argentinus
  • mesoscale oceanography
  • remote sensing
  • South Atlantic
  • squid fishery
  • SEA-SURFACE TEMPERATURES
  • TUNA CATCH
  • FISHERY
  • VARIABILITY
  • MANAGEMENT
  • LOCATION
  • ALBACORE
  • OCEAN

Cite this

Remotely sensed mesoscale oceanography and the distribution of lllex argentinus in the South Atlantic. / Waluda, C. M.; Rodhouse, P. G.; Trathan, P. N.; Pierce, Graham John.

In: Fisheries Oceanography, Vol. 10, 2001, p. 207-216.

Research output: Contribution to journalArticle

Waluda, C. M. ; Rodhouse, P. G. ; Trathan, P. N. ; Pierce, Graham John. / Remotely sensed mesoscale oceanography and the distribution of lllex argentinus in the South Atlantic. In: Fisheries Oceanography. 2001 ; Vol. 10. pp. 207-216.
@article{c4b670e36e6d4d7a840841cd207d916b,
title = "Remotely sensed mesoscale oceanography and the distribution of lllex argentinus in the South Atlantic",
abstract = "In this study, we consider the influence of mesoscale oceanographic processes around the Falkland Islands (Islas Malvinas) in the South-west Atlantic, during the period in which the commercial squid fishery for Illex argentinus operates. Spatially referenced fishery data and satellite-derived advanced very high resolution radiometry (AVHRR) sea surface temperature (SST) data were examined using geographic information system (GIS) techniques. The distribution and relative abundance of I. argentinus in the Falkland Islands fishery was examined for the period 1989-96. Three consistent areas of high abundance were observed to the north-east (shelf-break region) and north-west (shelf region) of the islands, and close to the northern coast of East Falkland. Areas of high sea surface temperature gradients (thermal gradients) extracted from remotely sensed satellite images were used as an indicator of mesoscale oceanographic activity and compared with the location of the fishery. I. argentinus were found to be associated with areas of thermal gradients, commonly seen at the interface of Falkland Current and Patagonian shelf waters. The techniques used in this analysis allow the overlay and analysis of physical oceanographic and fishery data with potential applications in fisheries management and operational fisheries oceanography.",
keywords = "geographic information system, Illex argentinus, mesoscale oceanography, remote sensing, South Atlantic, squid fishery, SEA-SURFACE TEMPERATURES, TUNA CATCH, FISHERY, VARIABILITY, MANAGEMENT, LOCATION, ALBACORE, OCEAN",
author = "Waluda, {C. M.} and Rodhouse, {P. G.} and Trathan, {P. N.} and Pierce, {Graham John}",
year = "2001",
doi = "10.1046/j.1365-2419.2001.00165.x",
language = "English",
volume = "10",
pages = "207--216",
journal = "Fisheries Oceanography",
issn = "1054-6006",
publisher = "Wiley-Blackwell",

}

TY - JOUR

T1 - Remotely sensed mesoscale oceanography and the distribution of lllex argentinus in the South Atlantic

AU - Waluda, C. M.

AU - Rodhouse, P. G.

AU - Trathan, P. N.

AU - Pierce, Graham John

PY - 2001

Y1 - 2001

N2 - In this study, we consider the influence of mesoscale oceanographic processes around the Falkland Islands (Islas Malvinas) in the South-west Atlantic, during the period in which the commercial squid fishery for Illex argentinus operates. Spatially referenced fishery data and satellite-derived advanced very high resolution radiometry (AVHRR) sea surface temperature (SST) data were examined using geographic information system (GIS) techniques. The distribution and relative abundance of I. argentinus in the Falkland Islands fishery was examined for the period 1989-96. Three consistent areas of high abundance were observed to the north-east (shelf-break region) and north-west (shelf region) of the islands, and close to the northern coast of East Falkland. Areas of high sea surface temperature gradients (thermal gradients) extracted from remotely sensed satellite images were used as an indicator of mesoscale oceanographic activity and compared with the location of the fishery. I. argentinus were found to be associated with areas of thermal gradients, commonly seen at the interface of Falkland Current and Patagonian shelf waters. The techniques used in this analysis allow the overlay and analysis of physical oceanographic and fishery data with potential applications in fisheries management and operational fisheries oceanography.

AB - In this study, we consider the influence of mesoscale oceanographic processes around the Falkland Islands (Islas Malvinas) in the South-west Atlantic, during the period in which the commercial squid fishery for Illex argentinus operates. Spatially referenced fishery data and satellite-derived advanced very high resolution radiometry (AVHRR) sea surface temperature (SST) data were examined using geographic information system (GIS) techniques. The distribution and relative abundance of I. argentinus in the Falkland Islands fishery was examined for the period 1989-96. Three consistent areas of high abundance were observed to the north-east (shelf-break region) and north-west (shelf region) of the islands, and close to the northern coast of East Falkland. Areas of high sea surface temperature gradients (thermal gradients) extracted from remotely sensed satellite images were used as an indicator of mesoscale oceanographic activity and compared with the location of the fishery. I. argentinus were found to be associated with areas of thermal gradients, commonly seen at the interface of Falkland Current and Patagonian shelf waters. The techniques used in this analysis allow the overlay and analysis of physical oceanographic and fishery data with potential applications in fisheries management and operational fisheries oceanography.

KW - geographic information system

KW - Illex argentinus

KW - mesoscale oceanography

KW - remote sensing

KW - South Atlantic

KW - squid fishery

KW - SEA-SURFACE TEMPERATURES

KW - TUNA CATCH

KW - FISHERY

KW - VARIABILITY

KW - MANAGEMENT

KW - LOCATION

KW - ALBACORE

KW - OCEAN

U2 - 10.1046/j.1365-2419.2001.00165.x

DO - 10.1046/j.1365-2419.2001.00165.x

M3 - Article

VL - 10

SP - 207

EP - 216

JO - Fisheries Oceanography

JF - Fisheries Oceanography

SN - 1054-6006

ER -