Spatial variability of inorganic nutrients and physical parameters in the waters of Bahia Magdalena lagoon, Pacific Coast, Mexico

Sujitha, S.B.; Jonathan, M.P.; Escobedo-Urías, Diana Cecilia; Aguirre-Bahena, Fernando; Villegas, Lorena Elizabeth Campos

doi:10.1016/j.chnaes.2017.01.003

Cited by 8 publications

(7 citation statements)

References 52 publications

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“…En lo referente a nutrientes inorgánicos disueltos, el nitrito presentó la mayor concentración en las estaciones frente al MFP (0.002 mg/L; Cuadro II), de manera similar a lo reportado por Sujitha et al (2017) en la misma laguna, particularmente en las estaciones más cercanas a la costa y en el litoral de la zona de manglar. Los valores de nitrito tienden a incrementarse en condiciones de pH > 8, saturación de oxígeno > 95% y escasa iluminación (Dvir et al 1999, Sujitha et al 2017.…”

Section: Discusión Efecto De La éPoca Del Año Y La Amplitud De La Mareaunclassified

“…Los valores promedio de nitrato (0.007 mg/L) fueron menores a los reportados para esta laguna (0.025 mg/L) en el mes de octubre del mismo año por Sujitha et al (2017), quienes mencionan que la única fuente de nitrato es la mezcla, advección y procesos de difusión del reservorio oceánico adyacente; sin embargo, la distribución de nitrito y nitrato presentada por estos autores mostró que los valores tendieron a incrementarse hacia la zona norte de la laguna (Fig. 5a-f).…”

Section: Discusión Efecto De La éPoca Del Año Y La Amplitud De La Mareaunclassified

“…El intervalo de concentración de fosfato (0.012 a 0.075 mg/L) fue mayor al reportado en la laguna por Sujitha et al (2017) (0.005 a 0.045 mg/L); estos autores sugieren que las altas concentraciones de fosfato se deben a una rápida mineralización y alto pH (8.28) en las aguas subyacentes que provocan la liberación de fosfato de los sedimentos aeróbicos al agua intersticial y posteriormente a la columna de agua.…”

Section: Discusión Efecto De La éPoca Del Año Y La Amplitud De La Mareaunclassified

“…El fosfato rebasó el límite permitido (0.002 mg/L) en el 100 % de las muestras, por lo que este nutriente es un componente no limitante para los productores primarios de la laguna (Cervantes-Duarte et al 2012). En este estudio, los niveles altos de nitrito y amonio en mareas muertas están relacionados con la fuente de aguas residuales y procesos de descomposición de materia orgánica in situ; sin embargo, con valores de pH > 8, condiciones de saturación de oxígeno y buena iluminación pueden contribuir a incrementar la concentración de nitrito (Dvir et al 1999, Sujitha et al 2017. Por otra parte, en mareas vivas la fuente de fosfato y silicato estuvo relacionada con la fuente local antrópica y la fuente natural aledaña al área de estudio; por ejemplo, en el caso del fosfato, al aporte de detergentes y productos de limpieza, así como el guano de las aves.…”

Section: Fuentes De Contaminación En La Zonaunclassified

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Estudio Integral De La Calidad Del Agua en El Litoral Del Puerto San Carlos, Baja California Sur, México

Cervantes‐Duarte

Santos-Echeandía

Rodríguez-Herrera

et al. 2020

RICA

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Physical, chemical and biological parameters were measured in March and November 2014. These water analyses were carried out at 22 sites on the coast of Puerto San Carlos (Magdalena Bay, Baja California Sur, Mexico), with the objective of assessing water quality and identifying possible sources of water pollution and its status according to Mexican regulations. The study area was divided into three zones according to its main activity: (1) thermoelectric power station, (2) fiscal port harbor and (3) San Carlos estuary, adjacent to the to the town of the same name. The measured physical, chemical and biological parameters were temperature, salinity, dissolved oxygen, chlorophyll-a, nutrients, dissolved trace metals, and coliform bacteria. The results showed poor water quality in the three areas studied, in accordance with NOM-001-SEMARNAT-1996 and the ecological criteria for water quality CE-CCA-001/89, in particular regarding phosphate, ammonium, and silicate (unregulated) concentrations, as well as the presence of Escherichia coli. The three zones are considered sources of anthropogenic contamination whose impact is greater in the warmest month and dead tides, probably due to the entry of water contaminated by anthropogenic waste derivatives. According to the sanitary authorities of the state of Baja California Sur, the certification of water quality in Magdalena Bay has been variable: it was not certified in 2014, whilst in the period 2015-2017 it was re-certified. Although this region is an important touristic and fishing site, it is at risk of contamination due to the lack of a wastewater treatment system in the town and the inadequate disposal of raw sewage from the port.

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Section: Discusión Efecto De La éPoca Del Año Y La Amplitud De La Mareaunclassified

Section: Fuentes De Contaminación En La Zonaunclassified

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Estudio Integral De La Calidad Del Agua en El Litoral Del Puerto San Carlos, Baja California Sur, México

Cervantes‐Duarte

Santos-Echeandía

Rodríguez-Herrera

et al. 2020

RICA

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“…Its location between land and sea is very possible to be influenced by both freshwater and seawater (Kjerfve 1994;Pérez-Ruzafa et al 2011;de Barros et al 2014;Medina-Gómez et al 2014). This ecosystem acts as a filter and preserves nutrients and organic and inorganic materials despite fluctuations due to the influence of low and high tides (Sujitha et al 2017;Ratnayake et al 2018;Pérez-Ruzafa et al 2019). Tidal lakes are very vulnerable to nutrient enrichment from surface runoff (both fresh and seawater), groundwater, and atmospheric sensitivity (Rodellas et al 2018;Mentzafou and Dimitriou 2019;Pérez-Ruzafa et al 2019).…”

Section: Introductionmentioning

confidence: 99%

The dynamics of the plankton community on Lake Siombak, a tropical tidal lake in North Sumatra, Indonesia

et al. 2020

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Abstract. Muhtadi A, Pulungan A, Nurmaiyah, Fadlhin A, Melati P, Sinaga RZ, Uliya R, Rizki M, Rohim N, Ifanda D, Leidonald R, Wahyuningsih H, Hasani Q. 2020. The dynamics of the plankton community on Lake Siombak, a tropical tidal lake in North Sumatra, Indonesia. Biodiversitas 21: 3707-3719. The tidal lake is a very dynamic estuary ecosystem and very vulnerable to environmental stresses and disturbances. Plankton is an aquatic organism that is very easily affected by environmental pressures and disturbances. This study aimed to reveal the phenomenon of plankton dynamics in tropical tidal lakes in Indonesia. The study was conducted at Siombak Lake from September 2018 to August 2019. Data were collected at high and low tides every month during the full month. The data analysis included plankton abundance, diversity index, and the relationship between water quality and plankton with PCA and succession analysis. The results showed that in Siombak Lake was found 66 genera which consisted of 54 phytoplankton genera and 12 zooplankton genera. Plankton abundance is higher in parts of the lake (stations 1-8) than in the river (stations 9-11) at both high and low tide. Temporally it shows that plankton abundance is higher in the rainy season (Feb-Aug, outside May) than in the rainy season (Sep-Jan, and May). Spatially, plankton in Siombak Lake at high tide is more influenced by TSS, phosphate, and salinity, while at low tide, it is influenced by TSS, Water transparency, BOD, silicate, salinity, and dissolved oxygen. Temporally, plankton in Siombak Lake at high tide is more influenced by salinity, conductivity, Debit, TSS, and salinity, while at low tide, it is influenced by salinity, conductivity, turbidity, TSS, TDS, DO, BOD, and COD. Based on the plankton Frontier succession graph, it shows that Siombak Lake is included in stage 1 and stage 2. Stage 1 occurs before the rainy season (August-September) and the peak of the dry season (March-April).

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Trace elements in marine organisms of Magdalena Bay, Pacific Coast of Mexico: Bioaccumulation in a pristine environment

Sujitha

Jonathan

Aurioles‐Gamboa

et al. 2018

Environ Geochem Health

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Spatial variability of inorganic nutrients and physical parameters in the waters of Bahia Magdalena lagoon, Pacific Coast, Mexico

Cited by 8 publications

References 52 publications

Estudio Integral De La Calidad Del Agua en El Litoral Del Puerto San Carlos, Baja California Sur, México

Estudio Integral De La Calidad Del Agua en El Litoral Del Puerto San Carlos, Baja California Sur, México

The dynamics of the plankton community on Lake Siombak, a tropical tidal lake in North Sumatra, Indonesia

Trace elements in marine organisms of Magdalena Bay, Pacific Coast of Mexico: Bioaccumulation in a pristine environment

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