Phytoplankton biomass and production off the Baja California Peninsula: 1997–2016

Phytoplankton biomass and production off the Baja California Peninsula: 1997–2016

Between 1997 and 2016, the Investigaciones Mexicanas de la Corriente de California (IMECOCAL, Mexican Investigations of the California Current) program conducted measurements of chlorophyll a and phytoplankton production off Baja California. Here, we summarize the main results obtained during the su...

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Главные авторы: De La Cruz-Orozco, Martín E, Gómez-Ocampo, Eliana, Miranda-Bojórquez, Luis E, Cepeda-Morales, Jushiro, Durazo, Reginaldo, Lavaniegos, Bertha E, Espinosa-Carreón, Teresa L, Sosa-Ávalos, Ramón, Aguirre-Hernández, Elsa, Gaxiola-Castro, Gilberto
Формат: info:eu-repo/semantics/article
Язык:eng
Опубликовано: Iniversidad Autónoma de Baja California 2017
Online-ссылка:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2793
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institution Repositorio Institucional
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language eng
description Between 1997 and 2016, the Investigaciones Mexicanas de la Corriente de California (IMECOCAL, Mexican Investigations of the California Current) program conducted measurements of chlorophyll a and phytoplankton production off Baja California. Here, we summarize the main results obtained during the survey period. Long-term means indicated that high productivity occurred along the coastal zone where upwelling occurs, and in a semi-permanent cyclonic gyre off Punta Eugenia. At the seasonal scale, the variability of integrated primary production showed differences with respect to integrated chlorophyll a variability. Integrated chlorophyll a exhibited maximum values during the coastal upwelling season in spring and summer, while minimum values occurred during the inflow of tropical-subtropical waters south of Punta Eugenia in autumn and winter. In contrast, the highest values of integrated primary production occurred in spring and summer to the north of Punta Eugenia, whereas to the south of this location, the highest values occurred in winter and autumn. This seasonal variability was associated with phytoplankton size and maximum photosynthetic rates. At the interannual scale, low productivity was associated with increased stratification during the subarctic water intrusion events and the “Blob” and El Niño events in 2015–2016. Productivity time-series were in agreement with the seasonal variability of the north Pacific Gyre Oscillation index. Given that phytoplankton is the first level of the marine food web, this study contributes to the understanding of regional variations in higher trophic levels at the seasonal and interannual scales. 
format info:eu-repo/semantics/article
author De La Cruz-Orozco, Martín E
Gómez-Ocampo, Eliana
Miranda-Bojórquez, Luis E
Cepeda-Morales, Jushiro
Durazo, Reginaldo
Lavaniegos, Bertha E
Espinosa-Carreón, Teresa L
Sosa-Ávalos, Ramón
Aguirre-Hernández, Elsa
Gaxiola-Castro, Gilberto
spellingShingle De La Cruz-Orozco, Martín E
Gómez-Ocampo, Eliana
Miranda-Bojórquez, Luis E
Cepeda-Morales, Jushiro
Durazo, Reginaldo
Lavaniegos, Bertha E
Espinosa-Carreón, Teresa L
Sosa-Ávalos, Ramón
Aguirre-Hernández, Elsa
Gaxiola-Castro, Gilberto
Phytoplankton biomass and production off the Baja California Peninsula: 1997–2016
author_facet De La Cruz-Orozco, Martín E
Gómez-Ocampo, Eliana
Miranda-Bojórquez, Luis E
Cepeda-Morales, Jushiro
Durazo, Reginaldo
Lavaniegos, Bertha E
Espinosa-Carreón, Teresa L
Sosa-Ávalos, Ramón
Aguirre-Hernández, Elsa
Gaxiola-Castro, Gilberto
author_sort De La Cruz-Orozco, Martín E
title Phytoplankton biomass and production off the Baja California Peninsula: 1997–2016
title_short Phytoplankton biomass and production off the Baja California Peninsula: 1997–2016
title_full Phytoplankton biomass and production off the Baja California Peninsula: 1997–2016
title_fullStr Phytoplankton biomass and production off the Baja California Peninsula: 1997–2016
title_full_unstemmed Phytoplankton biomass and production off the Baja California Peninsula: 1997–2016
title_sort phytoplankton biomass and production off the baja california peninsula: 1997–2016
publisher Iniversidad Autónoma de Baja California
publishDate 2017
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2793
_version_ 1792608800163758080
spelling repositorioinstitucional-20.500.12930-75372023-05-09T14:30:23Z Phytoplankton biomass and production off the Baja California Peninsula: 1997–2016 Biomasa y producción del fitoplancton frente a la península de Baja California: 1997–2016 De La Cruz-Orozco, Martín E Gómez-Ocampo, Eliana Miranda-Bojórquez, Luis E Cepeda-Morales, Jushiro Durazo, Reginaldo Lavaniegos, Bertha E Espinosa-Carreón, Teresa L Sosa-Ávalos, Ramón Aguirre-Hernández, Elsa Gaxiola-Castro, Gilberto Between 1997 and 2016, the Investigaciones Mexicanas de la Corriente de California (IMECOCAL, Mexican Investigations of the California Current) program conducted measurements of chlorophyll a and phytoplankton production off Baja California. Here, we summarize the main results obtained during the survey period. Long-term means indicated that high productivity occurred along the coastal zone where upwelling occurs, and in a semi-permanent cyclonic gyre off Punta Eugenia. At the seasonal scale, the variability of integrated primary production showed differences with respect to integrated chlorophyll a variability. Integrated chlorophyll a exhibited maximum values during the coastal upwelling season in spring and summer, while minimum values occurred during the inflow of tropical-subtropical waters south of Punta Eugenia in autumn and winter. In contrast, the highest values of integrated primary production occurred in spring and summer to the north of Punta Eugenia, whereas to the south of this location, the highest values occurred in winter and autumn. This seasonal variability was associated with phytoplankton size and maximum photosynthetic rates. At the interannual scale, low productivity was associated with increased stratification during the subarctic water intrusion events and the “Blob” and El Niño events in 2015–2016. Productivity time-series were in agreement with the seasonal variability of the north Pacific Gyre Oscillation index. Given that phytoplankton is the first level of the marine food web, this study contributes to the understanding of regional variations in higher trophic levels at the seasonal and interannual scales.  Entre 1997 y 2016, en el programa de Investigaciones Mexicanas de la Corriente de California (IMECOCAL) se realizaron mediciones de clorofila a y producción del fitoplancton frente a la península de Baja California. En este trabajo se resumen los resultados del periodo de observaciones. Se encontró que la productividad promedio fue alta en zonas de surgencias costeras, y en el giro ciclónico semipermanente frente a punta Eugenia. A escala estacional, la variación de la producción primaria fue diferente a la de la clorofila a integrada. La clorofila a integrada presentó máximos durante la época de surgencias costeras en primavera y verano, y mínimos durante la influencia de agua cálida de origen tropical-subtropical en la zona al sur de punta Eugenia en otoño e invierno. Los mayores valores de producción primaria integrada ocurrieron en primavera y verano al norte de punta Eugenia y en invierno y otoño al sur de esta localidad. Esta variabilidad se relacionó con la presencia de fitoplancton de ciertos tamaños y sus tasas fotosintéticas máximas características. A escala interanual, la menor productividad estuvo asociada con la mayor estratificación durante los eventos de intrusión de agua subártica, y los eventos el “Blob” y El Niño entre 2015 y 2016. Los cambios en la productividad observados concuerdan con la variación temporal del índice de la Oscilación del Giro del Pacifico Norte. La variabilidad observada en ambas escalas contribuye a entender la variación regional en niveles tróficos superiores, dado que el fitoplancton es el principal componente de la cadena trófica marina. 2017-12-22 2021-06-03T03:55:37Z 2021-06-03T03:55:37Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2793 10.7773/cm.v43i4.2793 https://hdl.handle.net/20.500.12930/7537 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2793/1941 Copyright (c) 2017 Ciencias Marinas application/pdf Iniversidad Autónoma de Baja California Ciencias Marinas; Vol. 43 No. 4 (2017); 217–228 Ciencias Marinas; Vol. 43 Núm. 4 (2017); 217–228 2395-9053 0185-3880

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