Primary productivity of phytoplankton estimated with the oxygen and carbon fourteen methods at one station of Estero de Punta Banda, Mexico

Primary productivity of phytoplankton estimated with the oxygen and carbon fourteen methods at one station of Estero de Punta Banda, Mexico

 In order to estimate primary productivity of the phytoplankton using the dissolved oxygen (ΔO2) method with different incubation times and to compare it with that estimated using the carbon fourteen (14C) method, simultaneous primary productivity experiments were carried out with both meth...

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প্রধান লেখক: Sosa-Ávalos, R, Millán-Núñez, R, Santamaría-del-Ángel, E
বিন্যাস: Online
ভাষা:eng
প্রকাশিত: Iniversidad Autónoma de Baja California 1997
অনলাইন ব্যবহার করুন:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/805
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spelling oai:cienciasmarinas.com.mx:article-8052019-05-22T22:07:45Z Primary productivity of phytoplankton estimated with the oxygen and carbon fourteen methods at one station of Estero de Punta Banda, Mexico Productividad primaria del fitoplancton estimada con los métodos de oxígeno y carbono catorce en una estación del estero de Punta Banda, México Sosa-Ávalos, R Millán-Núñez, R Santamaría-del-Ángel, E primary productivity chlorophyll a bacteria coastal lagoon productividad primaria clorofila a bacterias laguna costera  In order to estimate primary productivity of the phytoplankton using the dissolved oxygen (ΔO2) method with different incubation times and to compare it with that estimated using the carbon fourteen (14C) method, simultaneous primary productivity experiments were carried out with both methods, on 12 November 1993, 3 and 16 February 1994, and 24 May 1994. The gross primary productivity (GPP) estimated with the ΔO2, method was similar to the values derived from the 14C method, with α = 0.05. Furthermore, to know the variability of the chlorophyll concentration and bacteria1 abundance, sea water was collected every 30 min during the sampling period. We conclude that it is important to consider bacteria in studies that estimate primary productivity in coastal areas, since bacterial abundance affects the results of the ΔO2, method, due to the utilization of the oxygen when there is enough substrate inside the bottles. The GPP values estimated with the ΔO2 method can be recommended as viable alternatives to the 14C method for situations where it is not convenient or possible to use radioactive isotopes, provided that the experiments are accomplished with replicas and at least three final incubation times. Con el propósito de estimar la productividad primaria del fitoplancton mediante el método de oxígeno disuelto (ΔO2) con diferentes tiempos de incubación y compararlo con la estimada mediante el método de carbono catorce (14C), se realizaron simultáneamente experimentos de productividad primaria con ambos métodos, los días 12 de noviembre de 1993, 3 y 16 de febrero de 1994, y 24 de mayo de 1994. La productividad primaria bruta (PPB) estimada por el método de ΔO2 fue similar a los valores derivados por el método de 14C, con α = 0.05. Además, para conocer la variabilidad de la concentración de clorofila y abundancia bacteriana, se recolectó agua de mar cada 30 min durante el periodo de muestreo. Se concluye que, debido a su abundancia, es importante considerar las bacterias en estudios encaminados a estimar la productividad primaria en cuerpos costeros, ya que afectan el resultado del método de ΔO2, por la utilización del oxígeno por parte de las bacterias cuando hay suficiente sustrato dentro de las botellas. Los valores de la PPB estimada con el método de ΔO2, pueden ser recomendadas como una alternativa viable al método de 14C para situaciones donde no es conveniente o posible el uso de isótopos radioactivos, siempre y cuando se realicen los experimentos con réplicas y por lo menos con tres tiempos finales de incubación. Iniversidad Autónoma de Baja California 1997-03-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/805 10.7773/cm.v23i3.805 Ciencias Marinas; Vol. 23 No. 3 (1997); 361-375 Ciencias Marinas; Vol. 23 Núm. 3 (1997); 361-375 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/805/731
institution Ciencias Marinas
collection OJS
language eng
format Online
author Sosa-Ávalos, R
Millán-Núñez, R
Santamaría-del-Ángel, E
spellingShingle Sosa-Ávalos, R
Millán-Núñez, R
Santamaría-del-Ángel, E
Primary productivity of phytoplankton estimated with the oxygen and carbon fourteen methods at one station of Estero de Punta Banda, Mexico
author_facet Sosa-Ávalos, R
Millán-Núñez, R
Santamaría-del-Ángel, E
author_sort Sosa-Ávalos, R
title Primary productivity of phytoplankton estimated with the oxygen and carbon fourteen methods at one station of Estero de Punta Banda, Mexico
title_short Primary productivity of phytoplankton estimated with the oxygen and carbon fourteen methods at one station of Estero de Punta Banda, Mexico
title_full Primary productivity of phytoplankton estimated with the oxygen and carbon fourteen methods at one station of Estero de Punta Banda, Mexico
title_fullStr Primary productivity of phytoplankton estimated with the oxygen and carbon fourteen methods at one station of Estero de Punta Banda, Mexico
title_full_unstemmed Primary productivity of phytoplankton estimated with the oxygen and carbon fourteen methods at one station of Estero de Punta Banda, Mexico
title_sort primary productivity of phytoplankton estimated with the oxygen and carbon fourteen methods at one station of estero de punta banda, mexico
description  In order to estimate primary productivity of the phytoplankton using the dissolved oxygen (ΔO2) method with different incubation times and to compare it with that estimated using the carbon fourteen (14C) method, simultaneous primary productivity experiments were carried out with both methods, on 12 November 1993, 3 and 16 February 1994, and 24 May 1994. The gross primary productivity (GPP) estimated with the ΔO2, method was similar to the values derived from the 14C method, with α = 0.05. Furthermore, to know the variability of the chlorophyll concentration and bacteria1 abundance, sea water was collected every 30 min during the sampling period. We conclude that it is important to consider bacteria in studies that estimate primary productivity in coastal areas, since bacterial abundance affects the results of the ΔO2, method, due to the utilization of the oxygen when there is enough substrate inside the bottles. The GPP values estimated with the ΔO2 method can be recommended as viable alternatives to the 14C method for situations where it is not convenient or possible to use radioactive isotopes, provided that the experiments are accomplished with replicas and at least three final incubation times.
publisher Iniversidad Autónoma de Baja California
publishDate 1997
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/805
_version_ 1715724013781647360

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