The microbial community in the coastal upwelling system off Concepción, Chile, 36°S, 2002-2003 period

This study describes the abundance and vertical distribution of microbial assemblages (from femto to nanoplankton) in the upwelling area off Concepción (~36ºS), analyses their relationship to oceanographic conditions during the upwelling season (austral spring-summer: December 2002- March 2003), and...

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Autores principales:	Eissler,Yoanna, Letelier,Jaime, Cuevas,L. Antonio, Morales,Carmen E, Escribano,Rubén
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2010
Materias:	Viruses bacterioplankton nanoplankton microbial assemblages
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572010000100001
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spelling	oai:scielo:S0718-195720100001000012010-09-14The microbial community in the coastal upwelling system off Concepción, Chile, 36°S, 2002-2003 periodEissler,YoannaLetelier,JaimeCuevas,L. AntonioMorales,Carmen EEscribano,Rubén Viruses bacterioplankton nanoplankton microbial assemblages This study describes the abundance and vertical distribution of microbial assemblages (from femto to nanoplankton) in the upwelling area off Concepción (~36ºS), analyses their relationship to oceanographic conditions during the upwelling season (austral spring-summer: December 2002- March 2003), and explores microbial community inter-relationships; at one shelf station and at the shelf break off the Southeastern Pacific coast. Virioplankton (VP), bacterioplankton (BP), and autotrophic (ANF) and heterotrophic (HNF) nanoflagellates were enumerated by epifluorescence microscopy. Abundances of VP, BP, HNF and ANF ranged as follows: 0.04-13.9 x 10(7) virus like particles mL-1, 0.5-5.6 x 10(6), 0.016- 0.4 x 10³, and 0.08-0.6 x 10³ cells mL_1, respectively. Variability in VP, BP and HNF abundance was explained in less than 27% by the oceanographic setting (i.e. temperature, salinity and dissolved oxygen). Upwelling conditions have a significant effect on distribution and abundance only of VP in both station examined. VP abundance was significant and positively related to the abundances of BP, ANF and HNF, suggesting that they may be possible hosts of marine viruses. Furthermore, the VP/BP ratio (mean = 9) obtained represented the upper limit of literature values, suggesting a high interaction between virioplankton and bacterioplankton.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.45 n.1 20102010-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572010000100001en10.4067/S0718-19572010000100001
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Viruses bacterioplankton nanoplankton microbial assemblages
spellingShingle	Viruses bacterioplankton nanoplankton microbial assemblages Eissler,Yoanna Letelier,Jaime Cuevas,L. Antonio Morales,Carmen E Escribano,Rubén The microbial community in the coastal upwelling system off Concepción, Chile, 36°S, 2002-2003 period
description	This study describes the abundance and vertical distribution of microbial assemblages (from femto to nanoplankton) in the upwelling area off Concepción (~36ºS), analyses their relationship to oceanographic conditions during the upwelling season (austral spring-summer: December 2002- March 2003), and explores microbial community inter-relationships; at one shelf station and at the shelf break off the Southeastern Pacific coast. Virioplankton (VP), bacterioplankton (BP), and autotrophic (ANF) and heterotrophic (HNF) nanoflagellates were enumerated by epifluorescence microscopy. Abundances of VP, BP, HNF and ANF ranged as follows: 0.04-13.9 x 10(7) virus like particles mL-1, 0.5-5.6 x 10(6), 0.016- 0.4 x 10³, and 0.08-0.6 x 10³ cells mL_1, respectively. Variability in VP, BP and HNF abundance was explained in less than 27% by the oceanographic setting (i.e. temperature, salinity and dissolved oxygen). Upwelling conditions have a significant effect on distribution and abundance only of VP in both station examined. VP abundance was significant and positively related to the abundances of BP, ANF and HNF, suggesting that they may be possible hosts of marine viruses. Furthermore, the VP/BP ratio (mean = 9) obtained represented the upper limit of literature values, suggesting a high interaction between virioplankton and bacterioplankton.
author	Eissler,Yoanna Letelier,Jaime Cuevas,L. Antonio Morales,Carmen E Escribano,Rubén
author_facet	Eissler,Yoanna Letelier,Jaime Cuevas,L. Antonio Morales,Carmen E Escribano,Rubén
author_sort	Eissler,Yoanna
title	The microbial community in the coastal upwelling system off Concepción, Chile, 36°S, 2002-2003 period
title_short	The microbial community in the coastal upwelling system off Concepción, Chile, 36°S, 2002-2003 period
title_full	The microbial community in the coastal upwelling system off Concepción, Chile, 36°S, 2002-2003 period
title_fullStr	The microbial community in the coastal upwelling system off Concepción, Chile, 36°S, 2002-2003 period
title_full_unstemmed	The microbial community in the coastal upwelling system off Concepción, Chile, 36°S, 2002-2003 period
title_sort	microbial community in the coastal upwelling system off concepción, chile, 36°s, 2002-2003 period
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572010000100001
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The microbial community in the coastal upwelling system off Concepción, Chile, 36°S, 2002-2003 period

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