The effect of El Niño on the nutrients and total organic cabon of a coastal lagoon of northwestern Baja California

The effect of El Niño on the nutrients and total organic cabon of a coastal lagoon of northwestern Baja California

Nutrients (NO3 + NO2, PO4) and total organic carbon (TOC) from Estero de Punta Banda, a coastal lagoon of Baja California (Mexico), were studied during the 1992–93 El Niño. Samples were collected at four sites distributed along the main channel of the lagoon, during four different tidal stages. Acco...

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Asıl Yazarlar: Galindo-Bect, MS, Galindo-Bect, LA, Hernández-Ayón, JM, Ley-Lou, F, Álvarez-Borrego, S
Materyal Türü: Online
Dil:eng
Baskı/Yayın Bilgisi: Iniversidad Autónoma de Baja California 1999
Online Erişim:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/664
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spelling oai:cienciasmarinas.com.mx:article-6642019-05-21T17:25:34Z The effect of El Niño on the nutrients and total organic cabon of a coastal lagoon of northwestern Baja California Efecto de El Niño en los nutrientes y el carbón orgánico total de una laguna costera del noroeste de Baja California Galindo-Bect, MS Galindo-Bect, LA Hernández-Ayón, JM Ley-Lou, F Álvarez-Borrego, S El Niño coastal lagoon tides organic carbon nutrients El Niño laguna costera mareas carbón orgánico nutrientes Nutrients (NO3 + NO2, PO4) and total organic carbon (TOC) from Estero de Punta Banda, a coastal lagoon of Baja California (Mexico), were studied during the 1992–93 El Niño. Samples were collected at four sites distributed along the main channel of the lagoon, during four different tidal stages. According to reports in the literature, this coastal lagoon behaves as an antiestuary most of the time, with salinity increasing significantly from the mouth inwards. Greater input of fresh water due to a larger rainfall, well above the annual mean (393 mm), caused the Estero to behave as an estuary, with salinity values of <25 and with an increase of NO3 + NO2, PO4 and TOC. PO4 values fluctuated between 0.5 and 3.5 µM, and those of TOC between 2.3 and 9.8 mg L–1, with a clear tendency to increase from the entrance to the interior of the lagoon. NO3 values fluctuated between 0.2 and 2.3 µM in September 1992, and between 1.4 and 6.8 µM in March 1993, also with a clear tendency to increase towards the lagoon´ s interior in the latter case. PO4 had a significant negative correlation (P < 0.05) with salinity in March 1993. The change of this lagoon from antiestuary to estuary for long periods, of almost up to one year, is related to meteorological phenomena influenced by large scale events like El Niño. Se estudió la dinámica de nutrientes (NO3 + NO2 y PO4) y carbón orgánico total (COT) en el Estero de Punta Banda, Baja California (México), durante El Niño 1992–93. Se recolectaron muestras de agua superficial en cuatro localidades distribuidas a lo largo de la laguna, considerando cuatro estados diferentes de marea. De acuerdo con lo informado en la literatura, la mayor parte del tiempo esta laguna costera se comporta claramente como un antiestuario, con la salinidad aumentando significativamente de la boca hacia el interior. El incremento del aporte de agua dulce debido a la precipitación pluvial muy por encima de la media anual durante este evento (393 mm), causó que el Estero se comportara como estuario, con valores de salinidad menores que 25 y con un incremento de NO3 + NO2, PO4 y COT. Los valores de PO4 fluctuaron entre 0.5 y 3.5 µM y los de COT entre 2.3 y 9.8 mg L–1, con una clara tendencia a incrementarse de la boca hacia el interior de la laguna. Los valores de NO3 fluctuaron entre 0.2 y 2.3 µM en septiembre de 1992 y entre 1.4 y 6.8 µM en marzo de 1993, también con una clara tendencia a aumentar hacia el extremo interno de la laguna en el segundo caso. PO4 presentó una correlación negativa significativa (P < 0.05) con la salinidad en marzo de 1993. La transformación de esta laguna costera de antiestuarina a estuarina por periodos prolongados, de hasta casi un año, está relacionada con eventos meteorológicos regionales, influenciados por fenómenos de gran escala como El Niño. Iniversidad Autónoma de Baja California 1999-03-06 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/664 10.7773/cm.v25i2.664 Ciencias Marinas; Vol. 25 No. 2 (1999); 225-237 Ciencias Marinas; Vol. 25 Núm. 2 (1999); 225-237 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/664/594
institution Ciencias Marinas
collection OJS
language eng
format Online
author Galindo-Bect, MS
Galindo-Bect, LA
Hernández-Ayón, JM
Ley-Lou, F
Álvarez-Borrego, S
spellingShingle Galindo-Bect, MS
Galindo-Bect, LA
Hernández-Ayón, JM
Ley-Lou, F
Álvarez-Borrego, S
The effect of El Niño on the nutrients and total organic cabon of a coastal lagoon of northwestern Baja California
author_facet Galindo-Bect, MS
Galindo-Bect, LA
Hernández-Ayón, JM
Ley-Lou, F
Álvarez-Borrego, S
author_sort Galindo-Bect, MS
title The effect of El Niño on the nutrients and total organic cabon of a coastal lagoon of northwestern Baja California
title_short The effect of El Niño on the nutrients and total organic cabon of a coastal lagoon of northwestern Baja California
title_full The effect of El Niño on the nutrients and total organic cabon of a coastal lagoon of northwestern Baja California
title_fullStr The effect of El Niño on the nutrients and total organic cabon of a coastal lagoon of northwestern Baja California
title_full_unstemmed The effect of El Niño on the nutrients and total organic cabon of a coastal lagoon of northwestern Baja California
title_sort effect of el niño on the nutrients and total organic cabon of a coastal lagoon of northwestern baja california
description Nutrients (NO3 + NO2, PO4) and total organic carbon (TOC) from Estero de Punta Banda, a coastal lagoon of Baja California (Mexico), were studied during the 1992–93 El Niño. Samples were collected at four sites distributed along the main channel of the lagoon, during four different tidal stages. According to reports in the literature, this coastal lagoon behaves as an antiestuary most of the time, with salinity increasing significantly from the mouth inwards. Greater input of fresh water due to a larger rainfall, well above the annual mean (393 mm), caused the Estero to behave as an estuary, with salinity values of <25 and with an increase of NO3 + NO2, PO4 and TOC. PO4 values fluctuated between 0.5 and 3.5 µM, and those of TOC between 2.3 and 9.8 mg L–1, with a clear tendency to increase from the entrance to the interior of the lagoon. NO3 values fluctuated between 0.2 and 2.3 µM in September 1992, and between 1.4 and 6.8 µM in March 1993, also with a clear tendency to increase towards the lagoon´ s interior in the latter case. PO4 had a significant negative correlation (P < 0.05) with salinity in March 1993. The change of this lagoon from antiestuary to estuary for long periods, of almost up to one year, is related to meteorological phenomena influenced by large scale events like El Niño.
publisher Iniversidad Autónoma de Baja California
publishDate 1999
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/664
_version_ 1715723995845754880

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