Synoptic oceanography of San Jorge Gulf (Argentina): A template for Patagonian red shrimp (Pleoticus muelleri) spatial dynamics

An extensive series of high-resolution satellite images from the advanced very high-resolution radiometer (AVHRR) and the sea-viewing wide field-of-view sensor (SeaWIFS) was used in a synoptic oceanographic characterization of San Jorge Gulf (SJG, Argentine Patagonia), an area of great significance...

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Autores principales: Glembocki, N.G., Williams, G.N., Góngora, M.E., Gagliardini, D.A., Orensanz, J.M.(.
Formato: JOUR
Materias:
Argentine patagonia
Chlorophyll a
Frontal systems
Pleoticus muelleri
Remote sensing
SST
AVHRR
chlorophyll a
crustacean
frontal feature
nursery ground
satellite imagery
SeaWiFS
shrimp fishery
spatial variation
sustainability
thermohaline structure
Argentina
Atlantic Ocean
San Jorge Gulf
Farfantepenaeus aztecus
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_13851101_v95_n_p22_Glembocki
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_13851101_v95_n_p22_Glembocki
record_format dspace
spelling todo:paper_13851101_v95_n_p22_Glembocki2023-10-03T16:12:08Z Synoptic oceanography of San Jorge Gulf (Argentina): A template for Patagonian red shrimp (Pleoticus muelleri) spatial dynamics Glembocki, N.G. Williams, G.N. Góngora, M.E. Gagliardini, D.A. Orensanz, J.M.(. Argentine patagonia Chlorophyll a Frontal systems Pleoticus muelleri Remote sensing SST AVHRR chlorophyll a crustacean frontal feature nursery ground satellite imagery SeaWiFS shrimp fishery spatial variation sustainability thermohaline structure Argentina Atlantic Ocean San Jorge Gulf Farfantepenaeus aztecus Pleoticus muelleri An extensive series of high-resolution satellite images from the advanced very high-resolution radiometer (AVHRR) and the sea-viewing wide field-of-view sensor (SeaWIFS) was used in a synoptic oceanographic characterization of San Jorge Gulf (SJG, Argentine Patagonia), an area of great significance for marine conservation and commercial fishing. Remotely sensed information was combined with on-board observer's data and published information to investigate the role of distinctive oceanographic features in relation to the life cycle of the Patagonian red shrimp (Pleoticus muelleri), main target of the industrial fleet in SJG. Three frontal systems-North, South and Outer SJG-are characterized. The North and South SJG fronts are associated with shrimp reproductive aggregations during late spring and summer. While both function as spawning/nursery grounds, they differ from each other in many respects. The thermohaline South SJG front has its maximum expression during the winter, reflecting the influence of the low-salinity Magellanic Plume, while the thermal North SJG front develops during spring and summer as the water column becomes stratified in the central basin of the gulf. Wind-related down-welling inshore of the front prevails in the North SJG, and upwelling in the South SJG frontal area. Chlorophyll a is concentrated near the thermocline on the stratified side of the North SJG, and for that reason, it is not detected by remote sensors during the spring bloom and the summer but becomes apparent offshore from the location of the front when the thermocline deepens during the fall (May). In the South SJG front, Chl-a concentration is apparent inshore from the front all year-round, related in part to upwelling-mediated resuspension. The northern end of the outer front coincides in time and space with a recurrent non-reproductive aggregation of red shrimp between November and January and is presumably related to foraging. It is argued that keeping the North and South SJG frontal systems off-limits to fishing is a central precautionary requisite for the sustainability of the shrimp fishery. © 2014 Elsevier B.V. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_13851101_v95_n_p22_Glembocki
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Argentine patagonia
Chlorophyll a
Frontal systems
Pleoticus muelleri
Remote sensing
SST
AVHRR
chlorophyll a
crustacean
frontal feature
nursery ground
satellite imagery
SeaWiFS
shrimp fishery
spatial variation
sustainability
thermohaline structure
Argentina
Atlantic Ocean
San Jorge Gulf
Farfantepenaeus aztecus
Pleoticus muelleri
spellingShingle Argentine patagonia
Chlorophyll a
Frontal systems
Pleoticus muelleri
Remote sensing
SST
AVHRR
chlorophyll a
crustacean
frontal feature
nursery ground
satellite imagery
SeaWiFS
shrimp fishery
spatial variation
sustainability
thermohaline structure
Argentina
Atlantic Ocean
San Jorge Gulf
Farfantepenaeus aztecus
Pleoticus muelleri
Glembocki, N.G.
Williams, G.N.
Góngora, M.E.
Gagliardini, D.A.
Orensanz, J.M.(.
Synoptic oceanography of San Jorge Gulf (Argentina): A template for Patagonian red shrimp (Pleoticus muelleri) spatial dynamics
topic_facet Argentine patagonia
Chlorophyll a
Frontal systems
Pleoticus muelleri
Remote sensing
SST
AVHRR
chlorophyll a
crustacean
frontal feature
nursery ground
satellite imagery
SeaWiFS
shrimp fishery
spatial variation
sustainability
thermohaline structure
Argentina
Atlantic Ocean
San Jorge Gulf
Farfantepenaeus aztecus
Pleoticus muelleri
description An extensive series of high-resolution satellite images from the advanced very high-resolution radiometer (AVHRR) and the sea-viewing wide field-of-view sensor (SeaWIFS) was used in a synoptic oceanographic characterization of San Jorge Gulf (SJG, Argentine Patagonia), an area of great significance for marine conservation and commercial fishing. Remotely sensed information was combined with on-board observer's data and published information to investigate the role of distinctive oceanographic features in relation to the life cycle of the Patagonian red shrimp (Pleoticus muelleri), main target of the industrial fleet in SJG. Three frontal systems-North, South and Outer SJG-are characterized. The North and South SJG fronts are associated with shrimp reproductive aggregations during late spring and summer. While both function as spawning/nursery grounds, they differ from each other in many respects. The thermohaline South SJG front has its maximum expression during the winter, reflecting the influence of the low-salinity Magellanic Plume, while the thermal North SJG front develops during spring and summer as the water column becomes stratified in the central basin of the gulf. Wind-related down-welling inshore of the front prevails in the North SJG, and upwelling in the South SJG frontal area. Chlorophyll a is concentrated near the thermocline on the stratified side of the North SJG, and for that reason, it is not detected by remote sensors during the spring bloom and the summer but becomes apparent offshore from the location of the front when the thermocline deepens during the fall (May). In the South SJG front, Chl-a concentration is apparent inshore from the front all year-round, related in part to upwelling-mediated resuspension. The northern end of the outer front coincides in time and space with a recurrent non-reproductive aggregation of red shrimp between November and January and is presumably related to foraging. It is argued that keeping the North and South SJG frontal systems off-limits to fishing is a central precautionary requisite for the sustainability of the shrimp fishery. © 2014 Elsevier B.V.
format JOUR
author Glembocki, N.G.
Williams, G.N.
Góngora, M.E.
Gagliardini, D.A.
Orensanz, J.M.(.
author_facet Glembocki, N.G.
Williams, G.N.
Góngora, M.E.
Gagliardini, D.A.
Orensanz, J.M.(.
author_sort Glembocki, N.G.
title Synoptic oceanography of San Jorge Gulf (Argentina): A template for Patagonian red shrimp (Pleoticus muelleri) spatial dynamics
title_short Synoptic oceanography of San Jorge Gulf (Argentina): A template for Patagonian red shrimp (Pleoticus muelleri) spatial dynamics
title_full Synoptic oceanography of San Jorge Gulf (Argentina): A template for Patagonian red shrimp (Pleoticus muelleri) spatial dynamics
title_fullStr Synoptic oceanography of San Jorge Gulf (Argentina): A template for Patagonian red shrimp (Pleoticus muelleri) spatial dynamics
title_full_unstemmed Synoptic oceanography of San Jorge Gulf (Argentina): A template for Patagonian red shrimp (Pleoticus muelleri) spatial dynamics
title_sort synoptic oceanography of san jorge gulf (argentina): a template for patagonian red shrimp (pleoticus muelleri) spatial dynamics
url http://hdl.handle.net/20.500.12110/paper_13851101_v95_n_p22_Glembocki
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