The effect of river discharge and winds on the interannual variability of the pink shrimp farfantepenaeus paulensis production in Patos Lagoon
Autor(a) principal: | |
---|---|
Data de Publicação: | 2009 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da FURG (RI FURG) |
Texto Completo: | http://repositorio.furg.br/handle/1/2075 |
Resumo: | The Patos Lagoon estuary is an important environment for the life cycle of many species, including the pink shrimp Farfantepenaeus paulensis. This area acts as a nursery ground for the shrimp larvae, which are spawned in a coastal area and transported into the lagoon during spring and early summer (September to December). Harvesting of shrimp occurs from January to May, and yields have varied from around 1,000 to 8,000 tons year−1. This study is based on analysis of river discharge, pink shrimp catches, and wind velocity time series from 1964 to 2004. Negative correlation between pink shrimp catches and river runoff reflects the influence of discharge on the lagoon circulation and, consequently, on the intrusion of salt water and larvae. When river discharge is below average, landward currents forced by SW winds can enhance larval transport into the estuarine area, leading to an increase in pink shrimp captures. Above average river input would force a seaward flow that works as a barrier to ingress of larvae. This is unusual when compared to many other estuarine systems, and the main factor that accounts for this behavior is the morphology (choking) of Patos Lagoon. Interannual variability related to El Niño/Southern Oscillation events also influence pink shrimp production in this area. Low/high shrimp catches are related to El Niño(flood)/La Niña (drought) events. Wind can also impact production through its effect on the southward displacement of larvae from the spawning area. Long-term trends indicate an increase in river discharge around 20 m3 s−1year−1 and a decrease in shrimp catches on the order of 57 tons year-1. |
id |
FURG_7e6ebcc2d85ad1fcf4f16bb75efdd641 |
---|---|
oai_identifier_str |
oai:repositorio.furg.br:1/2075 |
network_acronym_str |
FURG |
network_name_str |
Repositório Institucional da FURG (RI FURG) |
repository_id_str |
|
spelling |
The effect of river discharge and winds on the interannual variability of the pink shrimp farfantepenaeus paulensis production in Patos LagoonCoastal lagoonRiver effectMorphological roleWind actionShrimp productionInterannual variabilityThe Patos Lagoon estuary is an important environment for the life cycle of many species, including the pink shrimp Farfantepenaeus paulensis. This area acts as a nursery ground for the shrimp larvae, which are spawned in a coastal area and transported into the lagoon during spring and early summer (September to December). Harvesting of shrimp occurs from January to May, and yields have varied from around 1,000 to 8,000 tons year−1. This study is based on analysis of river discharge, pink shrimp catches, and wind velocity time series from 1964 to 2004. Negative correlation between pink shrimp catches and river runoff reflects the influence of discharge on the lagoon circulation and, consequently, on the intrusion of salt water and larvae. When river discharge is below average, landward currents forced by SW winds can enhance larval transport into the estuarine area, leading to an increase in pink shrimp captures. Above average river input would force a seaward flow that works as a barrier to ingress of larvae. This is unusual when compared to many other estuarine systems, and the main factor that accounts for this behavior is the morphology (choking) of Patos Lagoon. Interannual variability related to El Niño/Southern Oscillation events also influence pink shrimp production in this area. Low/high shrimp catches are related to El Niño(flood)/La Niña (drought) events. Wind can also impact production through its effect on the southward displacement of larvae from the spawning area. Long-term trends indicate an increase in river discharge around 20 m3 s−1year−1 and a decrease in shrimp catches on the order of 57 tons year-1.2012-07-03T00:29:04Z2012-07-03T00:29:04Z2009info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfMÖLLER JUNIOR, Osmar Olinto; CASTELLO, Jorge Pablo; VAZ, Ana Carolina. The effect of river discharge and winds on the interannual variability of the pink shrimp farfantepenaeus paulensis production in Patos Lagoon. Estuaries and Coasts, v. 32, n. 4, p. 787-796, 2009. Disponível em: <http://www.springerlink.com/content/x5t1p6627214l681/fulltext.pdf>. Acesso em: 1 jun. 2012.http://repositorio.furg.br/handle/1/207510.1007/s12237-009-9168-6engMöller Junior, Osmar OlintoCastello, Jorge PabloVaz, Ana Carolinainfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da FURG (RI FURG)instname:Universidade Federal do Rio Grande (FURG)instacron:FURG2012-07-03T00:29:04Zoai:repositorio.furg.br:1/2075Repositório InstitucionalPUBhttps://repositorio.furg.br/oai/request || http://200.19.254.174/oai/requestopendoar:2012-07-03T00:29:04Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG)false |
dc.title.none.fl_str_mv |
The effect of river discharge and winds on the interannual variability of the pink shrimp farfantepenaeus paulensis production in Patos Lagoon |
title |
The effect of river discharge and winds on the interannual variability of the pink shrimp farfantepenaeus paulensis production in Patos Lagoon |
spellingShingle |
The effect of river discharge and winds on the interannual variability of the pink shrimp farfantepenaeus paulensis production in Patos Lagoon Möller Junior, Osmar Olinto Coastal lagoon River effect Morphological role Wind action Shrimp production Interannual variability |
title_short |
The effect of river discharge and winds on the interannual variability of the pink shrimp farfantepenaeus paulensis production in Patos Lagoon |
title_full |
The effect of river discharge and winds on the interannual variability of the pink shrimp farfantepenaeus paulensis production in Patos Lagoon |
title_fullStr |
The effect of river discharge and winds on the interannual variability of the pink shrimp farfantepenaeus paulensis production in Patos Lagoon |
title_full_unstemmed |
The effect of river discharge and winds on the interannual variability of the pink shrimp farfantepenaeus paulensis production in Patos Lagoon |
title_sort |
The effect of river discharge and winds on the interannual variability of the pink shrimp farfantepenaeus paulensis production in Patos Lagoon |
author |
Möller Junior, Osmar Olinto |
author_facet |
Möller Junior, Osmar Olinto Castello, Jorge Pablo Vaz, Ana Carolina |
author_role |
author |
author2 |
Castello, Jorge Pablo Vaz, Ana Carolina |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Möller Junior, Osmar Olinto Castello, Jorge Pablo Vaz, Ana Carolina |
dc.subject.por.fl_str_mv |
Coastal lagoon River effect Morphological role Wind action Shrimp production Interannual variability |
topic |
Coastal lagoon River effect Morphological role Wind action Shrimp production Interannual variability |
description |
The Patos Lagoon estuary is an important environment for the life cycle of many species, including the pink shrimp Farfantepenaeus paulensis. This area acts as a nursery ground for the shrimp larvae, which are spawned in a coastal area and transported into the lagoon during spring and early summer (September to December). Harvesting of shrimp occurs from January to May, and yields have varied from around 1,000 to 8,000 tons year−1. This study is based on analysis of river discharge, pink shrimp catches, and wind velocity time series from 1964 to 2004. Negative correlation between pink shrimp catches and river runoff reflects the influence of discharge on the lagoon circulation and, consequently, on the intrusion of salt water and larvae. When river discharge is below average, landward currents forced by SW winds can enhance larval transport into the estuarine area, leading to an increase in pink shrimp captures. Above average river input would force a seaward flow that works as a barrier to ingress of larvae. This is unusual when compared to many other estuarine systems, and the main factor that accounts for this behavior is the morphology (choking) of Patos Lagoon. Interannual variability related to El Niño/Southern Oscillation events also influence pink shrimp production in this area. Low/high shrimp catches are related to El Niño(flood)/La Niña (drought) events. Wind can also impact production through its effect on the southward displacement of larvae from the spawning area. Long-term trends indicate an increase in river discharge around 20 m3 s−1year−1 and a decrease in shrimp catches on the order of 57 tons year-1. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009 2012-07-03T00:29:04Z 2012-07-03T00:29:04Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
MÖLLER JUNIOR, Osmar Olinto; CASTELLO, Jorge Pablo; VAZ, Ana Carolina. The effect of river discharge and winds on the interannual variability of the pink shrimp farfantepenaeus paulensis production in Patos Lagoon. Estuaries and Coasts, v. 32, n. 4, p. 787-796, 2009. Disponível em: <http://www.springerlink.com/content/x5t1p6627214l681/fulltext.pdf>. Acesso em: 1 jun. 2012. http://repositorio.furg.br/handle/1/2075 10.1007/s12237-009-9168-6 |
identifier_str_mv |
MÖLLER JUNIOR, Osmar Olinto; CASTELLO, Jorge Pablo; VAZ, Ana Carolina. The effect of river discharge and winds on the interannual variability of the pink shrimp farfantepenaeus paulensis production in Patos Lagoon. Estuaries and Coasts, v. 32, n. 4, p. 787-796, 2009. Disponível em: <http://www.springerlink.com/content/x5t1p6627214l681/fulltext.pdf>. Acesso em: 1 jun. 2012. 10.1007/s12237-009-9168-6 |
url |
http://repositorio.furg.br/handle/1/2075 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da FURG (RI FURG) instname:Universidade Federal do Rio Grande (FURG) instacron:FURG |
instname_str |
Universidade Federal do Rio Grande (FURG) |
instacron_str |
FURG |
institution |
FURG |
reponame_str |
Repositório Institucional da FURG (RI FURG) |
collection |
Repositório Institucional da FURG (RI FURG) |
repository.name.fl_str_mv |
Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG) |
repository.mail.fl_str_mv |
|
_version_ |
1807384381872930816 |