Satellite-derived phytoplankton biomass and production variability in 2 contrasting coastal areas: off southern California and off northern Baja California

Satellite-derived phytoplankton biomass and production variability in 2 contrasting coastal areas: off southern California and off northern Baja California

In order to compare phytoplankton biomass (satellite-derived chlorophyll, Chlsat) and production (PP), and sea surface temperature (SST) between the regions north and south of the Ensenada Front, time series were generated from satellite imagery for 250-km transects perpendicular to the coast: one o...

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Hlavní autoři: Mirabal-Gómez, Uriel, Álvarez-Borrego, Saúl, Lara-Lara, José Rubén
Médium: Online
Jazyk:eng
Vydáno: Iniversidad Autónoma de Baja California 2017
On-line přístup:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2763
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id oai:cienciasmarinas.com.mx:article-2763
record_format ojs
institution Ciencias Marinas
collection OJS
language eng
format Online
author Mirabal-Gómez, Uriel
Álvarez-Borrego, Saúl
Lara-Lara, José Rubén
spellingShingle Mirabal-Gómez, Uriel
Álvarez-Borrego, Saúl
Lara-Lara, José Rubén
Satellite-derived phytoplankton biomass and production variability in 2 contrasting coastal areas: off southern California and off northern Baja California
author_facet Mirabal-Gómez, Uriel
Álvarez-Borrego, Saúl
Lara-Lara, José Rubén
author_sort Mirabal-Gómez, Uriel
title Satellite-derived phytoplankton biomass and production variability in 2 contrasting coastal areas: off southern California and off northern Baja California
title_short Satellite-derived phytoplankton biomass and production variability in 2 contrasting coastal areas: off southern California and off northern Baja California
title_full Satellite-derived phytoplankton biomass and production variability in 2 contrasting coastal areas: off southern California and off northern Baja California
title_fullStr Satellite-derived phytoplankton biomass and production variability in 2 contrasting coastal areas: off southern California and off northern Baja California
title_full_unstemmed Satellite-derived phytoplankton biomass and production variability in 2 contrasting coastal areas: off southern California and off northern Baja California
title_sort satellite-derived phytoplankton biomass and production variability in 2 contrasting coastal areas: off southern california and off northern baja california
description In order to compare phytoplankton biomass (satellite-derived chlorophyll, Chlsat) and production (PP), and sea surface temperature (SST) between the regions north and south of the Ensenada Front, time series were generated from satellite imagery for 250-km transects perpendicular to the coast: one off La Jolla (TLJ), southern California (USA), and the other off San Quintín Bay (TSQB), Baja California (Mexico). Moderate Resolution Imaging Spectroradiometer (MODIS) SST and Chlsat monthly composites and PP monthly composites were used for the 2002–2016 period. An “average year” was generated for each transect and each variable as an approximation to the climatology. Data show spatial variation in Chlsat and PP with higher values in the coastal zone (>10.0 mg·m–3 and >4.0 g C·m–2·d–1, respectively) than offshore (~0.1 mg·m–3 and 0.4 g C·m–2·d–1, respectively), while SST showed, in general, minimum values in the coastal zone (~15.0 ºC) and maxima offshore (~21.0 ºC). In the coastal zone, Chlsat values were higher on TSQB than on TLJ. However, sometimes phytoplankton biomass was higher in the offshore waters of TLJ than in the offshore waters of TSQB because of the effect of high Chlsat plumes coming from Point Conception into the Southern California Bight. The SST, Chlsat, and PP variations had clear seasonal and interannual components. Spectral analysis shows that the seasonal component of variation was dominant for the 3 variables. The 2004 central Pacific type of El Niño, the 2014 “Blob”, and the 2015–2016 eastern Pacific type of El Niño had very strong effects on phytoplankton biomass and production along both transects. Nevertheless, the effects generally tended to be stronger at TLJ than at TSQB. There are spatial variations in the coastal dynamics of the California Current System, and thus the effects of seasonal and interannual events will not be the same at different geographic locations. 
publisher Iniversidad Autónoma de Baja California
publishDate 2017
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2763
_version_ 1797332412504473600
spelling oai:cienciasmarinas.com.mx:article-27632024-04-05T20:24:57Z Satellite-derived phytoplankton biomass and production variability in 2 contrasting coastal areas: off southern California and off northern Baja California Variabilidad de la biomasa y la producción fitoplanctónicas, derivadas de satélite, en 2 áreas costeras contrastantes: frente al sur de California y frente al norte de Baja California Mirabal-Gómez, Uriel Álvarez-Borrego, Saúl Lara-Lara, José Rubén In order to compare phytoplankton biomass (satellite-derived chlorophyll, Chlsat) and production (PP), and sea surface temperature (SST) between the regions north and south of the Ensenada Front, time series were generated from satellite imagery for 250-km transects perpendicular to the coast: one off La Jolla (TLJ), southern California (USA), and the other off San Quintín Bay (TSQB), Baja California (Mexico). Moderate Resolution Imaging Spectroradiometer (MODIS) SST and Chlsat monthly composites and PP monthly composites were used for the 2002–2016 period. An “average year” was generated for each transect and each variable as an approximation to the climatology. Data show spatial variation in Chlsat and PP with higher values in the coastal zone (>10.0 mg·m–3 and >4.0 g C·m–2·d–1, respectively) than offshore (~0.1 mg·m–3 and 0.4 g C·m–2·d–1, respectively), while SST showed, in general, minimum values in the coastal zone (~15.0 ºC) and maxima offshore (~21.0 ºC). In the coastal zone, Chlsat values were higher on TSQB than on TLJ. However, sometimes phytoplankton biomass was higher in the offshore waters of TLJ than in the offshore waters of TSQB because of the effect of high Chlsat plumes coming from Point Conception into the Southern California Bight. The SST, Chlsat, and PP variations had clear seasonal and interannual components. Spectral analysis shows that the seasonal component of variation was dominant for the 3 variables. The 2004 central Pacific type of El Niño, the 2014 “Blob”, and the 2015–2016 eastern Pacific type of El Niño had very strong effects on phytoplankton biomass and production along both transects. Nevertheless, the effects generally tended to be stronger at TLJ than at TSQB. There are spatial variations in the coastal dynamics of the California Current System, and thus the effects of seasonal and interannual events will not be the same at different geographic locations.  Se generaron series de tiempo de imágenes satelitales para 2 transectos de 250 km perpendiculares a la costa, uno frente a La Jolla (TLJ), California (EUA), y otro frente a la bahía San Quintín (TBSQ), Baja California (México), para comparar la biomasa (clorofila derivada de sátelite, Chlsat) y producción fitoplanctónicas (PP) y la temperatura superficial del mar (TSM) entre las regiones al sur y al norte del Frente Ensenada. Se utilizaron composiciones mensuales de TSM y Chlsat del sensor Moderate Resolution Imaging Spectroradiometer (MODIS), y de PP para 2002–2016. Se generó un “año promedio” para cada transecto y cada variable como aproximación a la climatología. Los datos mostraron que Chlsat y PP fueron mayores en la zona costera (>10.0 mg·m–3 y >4.0 g C·m–2·d–1, respectivamente) que en la oceánica (~0.1 mg·m–3 y 0.4 g C·m–2·d–1, respectivamente), mientras que la TSM presentó, en general, valores mínimos en la zona costera (~15.0 ºC) y máximos mar adentro (~21.0 ºC). En la zona costera los valores de Chlsat fueron más altos en TBSQ que en TLJ. Sin embargo, algunas veces la biomasa fitoplanctónica fue más alta en la zona oceánica de TLJ que en la de TBSQ debido al efecto de lengüetas de Chlsat alta fluyendo de punta Concepción hacia la ensenada del sur de California. Las variaciones de la TSM, Chlsat y PP tuvieron componentes estacionales e interanuales claros. El análisis espectral mostró que el componente estacional fue dominante para las 3 variables. El Niño de 2004 del tipo Pacífico central, el “Blob” de 2014 y El Niño de 2015–2016 del tipo Pacífico oriental tuvieron efectos muy fuertes en la biomasa y producción fitoplanctónicas en ambos transectos. Sin embargo, en general, hubo una tendencia a que los efectos fuesen más fuertes en TLJ que en TBSQ. La dinámica costera del Sistema de la Corriente de California tiene variaciones espaciales, y esto hace que los impactos de eventos estacionales e interanuales sean diferentes en las diversas localidades geográficas. Iniversidad Autónoma de Baja California 2017-12-22 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf text/xml text/xml https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2763 10.7773/cm.v43i4.2763 Ciencias Marinas; Vol. 43 No. 4 (2017); 229–248 Ciencias Marinas; Vol. 43 Núm. 4 (2017); 229–248 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2763/1950 https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2763/420420607 https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2763/420420783 Copyright (c) 2017 Ciencias Marinas https://creativecommons.org/licenses/by/4.0

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