Phytoplanktonic primary production modulated by coastal geomorphology in a highly dynamic environment of central Chile

Coastal upwelling circulation has a regional fertilizing effect upon phytoplanktonic communities (i.e. enhancement of photosynthetic rates, increased biomass), but its influence at smaller spatial and temporal scales is less clear. At local scale (100's m) and under upwelling-favorable conditio...

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Autores principales:	Palma,Alvaro T, Henríquez,Luis A, Ojeda,F. Patricio
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2009
Materias:	Nearshore oceanography upwelling phytoplanktonic biomass carbon flux coastal morphology
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572009000200006
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spelling	oai:scielo:S0718-195720090002000062010-04-08Phytoplanktonic primary production modulated by coastal geomorphology in a highly dynamic environment of central ChilePalma,Alvaro THenríquez,Luis AOjeda,F. Patricio Nearshore oceanography upwelling phytoplanktonic biomass carbon flux coastal morphology Coastal upwelling circulation has a regional fertilizing effect upon phytoplanktonic communities (i.e. enhancement of photosynthetic rates, increased biomass), but its influence at smaller spatial and temporal scales is less clear. At local scale (100's m) and under upwelling-favorable conditions, retention zones with higher primary production (PP) levels tend to occur at the lee or protected side of small headlands induced by the orientation, geometry, size and general geomorphology of these coastal formations. Here we quantified net and gross primary production (NPP and GPP), community respiration (CR) and biomass (Chl-α) of natural phytoplankton assemblages in coastal environments of central Chile. The main goal was to determine short-term patterns in PP and CR around two small peninsulas in central Chile where measurable differences in several environmental variables can be expected, and we hypothesize that differences will no longer occur under non-upwelling/relaxation conditions. Results indicate that NPP GPP and CR differ at local scale, and contrary to previous findings we found that weakening of upwelling-favorable winds can generate an opposite pattern to that observed under active upwelling periods, whereas the exposed site retains higher biomass and exhibits higher PP levels compared to the protected site. Our results highlight the importance of short-term variability in PP, CR and their coupling with the distribution and abundance of the quick-responding phytoplankton at local spatial scale.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.44 n.2 20092009-08-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572009000200006en10.4067/S0718-19572009000200006
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Nearshore oceanography upwelling phytoplanktonic biomass carbon flux coastal morphology
spellingShingle	Nearshore oceanography upwelling phytoplanktonic biomass carbon flux coastal morphology Palma,Alvaro T Henríquez,Luis A Ojeda,F. Patricio Phytoplanktonic primary production modulated by coastal geomorphology in a highly dynamic environment of central Chile
description	Coastal upwelling circulation has a regional fertilizing effect upon phytoplanktonic communities (i.e. enhancement of photosynthetic rates, increased biomass), but its influence at smaller spatial and temporal scales is less clear. At local scale (100's m) and under upwelling-favorable conditions, retention zones with higher primary production (PP) levels tend to occur at the lee or protected side of small headlands induced by the orientation, geometry, size and general geomorphology of these coastal formations. Here we quantified net and gross primary production (NPP and GPP), community respiration (CR) and biomass (Chl-α) of natural phytoplankton assemblages in coastal environments of central Chile. The main goal was to determine short-term patterns in PP and CR around two small peninsulas in central Chile where measurable differences in several environmental variables can be expected, and we hypothesize that differences will no longer occur under non-upwelling/relaxation conditions. Results indicate that NPP GPP and CR differ at local scale, and contrary to previous findings we found that weakening of upwelling-favorable winds can generate an opposite pattern to that observed under active upwelling periods, whereas the exposed site retains higher biomass and exhibits higher PP levels compared to the protected site. Our results highlight the importance of short-term variability in PP, CR and their coupling with the distribution and abundance of the quick-responding phytoplankton at local spatial scale.
author	Palma,Alvaro T Henríquez,Luis A Ojeda,F. Patricio
author_facet	Palma,Alvaro T Henríquez,Luis A Ojeda,F. Patricio
author_sort	Palma,Alvaro T
title	Phytoplanktonic primary production modulated by coastal geomorphology in a highly dynamic environment of central Chile
title_short	Phytoplanktonic primary production modulated by coastal geomorphology in a highly dynamic environment of central Chile
title_full	Phytoplanktonic primary production modulated by coastal geomorphology in a highly dynamic environment of central Chile
title_fullStr	Phytoplanktonic primary production modulated by coastal geomorphology in a highly dynamic environment of central Chile
title_full_unstemmed	Phytoplanktonic primary production modulated by coastal geomorphology in a highly dynamic environment of central Chile
title_sort	phytoplanktonic primary production modulated by coastal geomorphology in a highly dynamic environment of central chile
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572009000200006
work_keys_str_mv	AT palmaalvarot phytoplanktonicprimaryproductionmodulatedbycoastalgeomorphologyinahighlydynamicenvironmentofcentralchile AT henriquezluisa phytoplanktonicprimaryproductionmodulatedbycoastalgeomorphologyinahighlydynamicenvironmentofcentralchile AT ojedafpatricio phytoplanktonicprimaryproductionmodulatedbycoastalgeomorphologyinahighlydynamicenvironmentofcentralchile
_version_	1714202283536809984

Phytoplanktonic primary production modulated by coastal geomorphology in a highly dynamic environment of central Chile

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