Larval fish assemblages off central Chile upwelling ecosystem

Spatial (both vertical and horizontal) and seasonal differences were detected in larval fish assemblages from samples collected off central Chile. Vertically-stratified sampling was carried out over the slope and continental shelf off Talcahuano in central Chile, during October 1998 and July 1999 to...

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Autores principales:	Landaeta,Mauricio F, Veas,Rodrigo, Letelier,Jaime, Castro,Leonardo R
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2008
Materias:	Ichthyoplankton southeast Pacific upwelling halocline
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572008000300016
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spelling	oai:scielo:S0718-195720080003000162009-04-09Larval fish assemblages off central Chile upwelling ecosystemLandaeta,Mauricio FVeas,RodrigoLetelier,JaimeCastro,Leonardo R Ichthyoplankton southeast Pacific upwelling halocline Spatial (both vertical and horizontal) and seasonal differences were detected in larval fish assemblages from samples collected off central Chile. Vertically-stratified sampling was carried out over the slope and continental shelf off Talcahuano in central Chile, during October 1998 and July 1999 to examine differences in larval fish assemblages. During October, the entire water column in the shelf and slope stations was characterized by cold and saltier waters, indicative of a recent upwelling event; during this period the larval fish assemblage was structured by time of the day in the shelf station. This assemblage was dominated by larvae of the mesopelagic lightfish Maurolicus parvipinnis and anchoveta Engraulis ringens. By contrast, ichthyoplankton was vertically structured in the slope station, showing different taxa associations in function of the depth (largely dominated by M. parvipinnis and the myctophid Hygophum bruuni). During July 1999, oceanographic conditions were characterized by higher surface temperatures, thermal inversion and a low salinity surface layer (33.6-33.8). Larval fish assemblages from slope and shelf were vertically stratified, and were aggregated below the halocline. Larval E. ringens and H. bruuni were highly abundant in both stations, and larvae of several taxa of subtidal/intertidal habitat (Hypsoblennius sordidus, Sebastes capensis) were collected over the shelf. During both periods the oceanographic features affecting the structure of larval fish assemblages off central Chile changed, wich was more noticeable during July (effects of the low salinity layer) than October (presence of recently upwelled waters).info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.43 n.3 20082008-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572008000300016en10.4067/S0718-19572008000300016
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Ichthyoplankton southeast Pacific upwelling halocline
spellingShingle	Ichthyoplankton southeast Pacific upwelling halocline Landaeta,Mauricio F Veas,Rodrigo Letelier,Jaime Castro,Leonardo R Larval fish assemblages off central Chile upwelling ecosystem
description	Spatial (both vertical and horizontal) and seasonal differences were detected in larval fish assemblages from samples collected off central Chile. Vertically-stratified sampling was carried out over the slope and continental shelf off Talcahuano in central Chile, during October 1998 and July 1999 to examine differences in larval fish assemblages. During October, the entire water column in the shelf and slope stations was characterized by cold and saltier waters, indicative of a recent upwelling event; during this period the larval fish assemblage was structured by time of the day in the shelf station. This assemblage was dominated by larvae of the mesopelagic lightfish Maurolicus parvipinnis and anchoveta Engraulis ringens. By contrast, ichthyoplankton was vertically structured in the slope station, showing different taxa associations in function of the depth (largely dominated by M. parvipinnis and the myctophid Hygophum bruuni). During July 1999, oceanographic conditions were characterized by higher surface temperatures, thermal inversion and a low salinity surface layer (33.6-33.8). Larval fish assemblages from slope and shelf were vertically stratified, and were aggregated below the halocline. Larval E. ringens and H. bruuni were highly abundant in both stations, and larvae of several taxa of subtidal/intertidal habitat (Hypsoblennius sordidus, Sebastes capensis) were collected over the shelf. During both periods the oceanographic features affecting the structure of larval fish assemblages off central Chile changed, wich was more noticeable during July (effects of the low salinity layer) than October (presence of recently upwelled waters).
author	Landaeta,Mauricio F Veas,Rodrigo Letelier,Jaime Castro,Leonardo R
author_facet	Landaeta,Mauricio F Veas,Rodrigo Letelier,Jaime Castro,Leonardo R
author_sort	Landaeta,Mauricio F
title	Larval fish assemblages off central Chile upwelling ecosystem
title_short	Larval fish assemblages off central Chile upwelling ecosystem
title_full	Larval fish assemblages off central Chile upwelling ecosystem
title_fullStr	Larval fish assemblages off central Chile upwelling ecosystem
title_full_unstemmed	Larval fish assemblages off central Chile upwelling ecosystem
title_sort	larval fish assemblages off central chile upwelling ecosystem
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2008
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572008000300016
work_keys_str_mv	AT landaetamauriciof larvalfishassemblagesoffcentralchileupwellingecosystem AT veasrodrigo larvalfishassemblagesoffcentralchileupwellingecosystem AT letelierjaime larvalfishassemblagesoffcentralchileupwellingecosystem AT castroleonardor larvalfishassemblagesoffcentralchileupwellingecosystem
_version_	1714202275903176704

Larval fish assemblages off central Chile upwelling ecosystem

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