Ecosystem functioning: The basis for restoration and management of a tropical coastal lagoon, Pacific coast of Mexico

Yáñez‐Arancibia, Alejandro; Day, John W.; Sánchez-Gil, Patricia; Day, John; Lane, Robert R.; Zárate-Lomelí, David; Vásquez, Héctor Alafita; Rojas-Galaviz, J. L.; Ramírez-Gordillo, José

doi:10.1016/j.ecoleng.2013.03.007

Cited by 33 publications

(20 citation statements)

References 24 publications

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“…The average values of nitrite, nitrate and ammonium recorded in different seasons were well below the values reported by Contreras-Espinoza et al (1996), Herrera-Silveira et al (2002) and Ramos-Miranda et al (2006) for the southern Gulf of Mexico. However, the same pattern of high values in the rainy season, coupled with the proximity of river mouths with strong freshwater influence, can be seen (Yáñez-Arancibia and Day, 2005). High values of orthophosphate and silicate are associated with the period of increased river discharge determined by circulation and biogeochemical processes (Ramos-Miranda et al, 2006).…”

Section: Discussionmentioning

confidence: 89%

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Potentially harmful cyanobacteria in oyster banks of Términos lagoon, southeastern Gulf of Mexico

Poot-Delgado¹,

Okolodkov²,

Aké-Castillo³

et al. 2018

Acta biol. Colomb.

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Cyanobacteria inhabit hypersaline, marine and freshwater environments. Some toxic and non-toxic species can form harmful blooms. The aim of this study was to identify potentially harmful cyanobacterial species in the oyster banks of Términos Lagoon, the southeastern Gulf of Mexico. Six sample sites (up to 2-m depth) were monitored monthly from August 2012 to September 2013. Water temperature, salinity, pH, dissolved oxygen saturation (% DO), inorganic nutrients and abundance of cyanobacteria were determined. Temperature and salinity were characterized by marked seasonal differences (26.8 to 30.6 °C and 6.1 to 19.5, respectively). The pH values (ranging from 7.1 to 8.4) and the % DO (88.4 to 118.2 %) suggest a predominance of photosynthetic activity in the windy season (October-February). Elevated nutrient contents are associated with the period of increased river discharge, determined by water circulation and biogeochemical processes. Fourteen taxa were identified, of which Anabaena sp., Merismopedia sp., Oscillatoria sp. and Cylindrospermopsis cuspis produced blooms. Cyanobacterial abundances were on the order of magnitude of 10 6 cells L -1 in October 2012 at stations S1-S6, with an average value of 3.2x10 5 cells L -1 and a range of 2000 to 3.1x10 6 cells L -1 throughout the study period; however, they showed a remarkable absence during the windy season (October to January). Anabaena sp. and C. cuspis reached abundances of 1.9x10 6 and 1.3x10 6 cells L -1, respectively. The latter caused the temporary closure of oyster Crassostrea virginica harvesting for 15 days in October 2012.

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Section: Discussionmentioning

confidence: 89%

“…The tides, the discharge of fresh water and the local winds are linked to the period of high river discharge by rainfall enriching the waters at the entrance with new nutrients and causing high turbidity and low salinity (Yáñez-Arancibia and Day, 2005).…”

Section: Discussionmentioning

confidence: 99%

Potentially harmful cyanobacteria in oyster banks of Términos lagoon, southeastern Gulf of Mexico

Poot-Delgado¹,

Okolodkov²,

Aké-Castillo³

et al. 2018

Acta biol. Colomb.

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“…Entre estos ecosistemas destacan las lagunas costeras, las cuales se definen según Yáñez-Arancibia et al (2014) y Tavares et al (2015) como ecosistemas muy fluctuantes caracterizados fundamentalmente por la mezcla de aguas continentales y marinas, donde la intensidad y frecuencia de esta mezcla, determina en su mayor parte los cambios estacionales de las características químicas del agua y de las poblaciones biológicas; se encuentran ubicadas en sectores con fuerte dinámica marina, sujetos a cambios rápidos en sus características tanto morfo-sedimentológicas como ambientales. Lankford (1977) plantea que son cuerpos de agua con un eje longitudinal paralelo a la costa que tiene comunicación con el mar (a través de una boca o un canal) y limitada por algún tipo de barrera física o hidrodinámica.…”

Section: Introductionunclassified

Composición y abundancia del zooplancton en la laguna El Morro, Isla de Margarita, Venezuela

et al. 2017

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Se analizó la composición y abundancia del zooplancton de la laguna El Morro en la isla de Margarita, Venezuela, durante el periodo de surgencia (marzo-mayo 2011) y de relajación (junio-agosto 2011). Las muestras fueron recolectadas en 6 estaciones de las diferentes zonas de la laguna. Se realizaron calados con una red de plancton de 333 µm durante 10 minutos. Se midió in situ la temperatura, salinidad y oxígeno disuelto, además de nutrientes. Se registraron valores medios de temperatura de 29.7 ºC, salinidad de 36 ups, oxígeno disuelto de 5.9 mg.L-1. La concentración de nutrientes fue baja (medias de 0.12; 0.04; 0.03 mg.L-1 para nitrato, nitrito y fosfato, respectivamente). Se detectaron diferencias significativas temporales con mayores registros en la temporada de relajación, mientras que espacialmente no mostró diferencias, a pesar que en las estaciones internas (Est. 4,5,6) se obtuvo mayor abundancia. Se identificaron quince grupos zooplanctónicos, determinándose nueve especies del grupo Copepoda, dos de Cladocera, una de Decapoda, Tunicada y Rotifera y diferentes formas larvarias de distintos taxa. Las larvas de crustáceos presentaron la abundancia media y relativa más alta (47738 ind.m-3 y 46.83%, respectivamente), seguido del copépodo Oithona nana (31740 ind.m-3 y 25.94%, respectivamente) y Paracalanus quasimodo (12958 ind.m-3 y 8.47%, respectivamente). Esta laguna involucra la estacionalidad surgencia-relajación como un efecto importante en la distribución y abundancia del zooplancton.

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“…Deforestation and dam-building upriver, as well as subsidence, oil and gas impacts and construction of river levees have caused wetland loss in both systems [9][10][11][12]. But the severity of these impacts has been much greater in the MAR delta, where more than 4800 km 2 of deltaic wetlands have converted to open water since 1930 [11,12].…”

Section: Introductionmentioning

confidence: 99%

Can Continental Shelf River Plumes in the Northern and Southern Gulf of Mexico Promote Ecological Resilience in a Time of Climate Change?

Kemp

Day

Yáñez‐Arancibia

et al. 2016

Water

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Ecosystem functioning: The basis for restoration and management of a tropical coastal lagoon, Pacific coast of Mexico

Cited by 33 publications

References 24 publications

Potentially harmful cyanobacteria in oyster banks of Términos lagoon, southeastern Gulf of Mexico

Potentially harmful cyanobacteria in oyster banks of Términos lagoon, southeastern Gulf of Mexico

Composición y abundancia del zooplancton en la laguna El Morro, Isla de Margarita, Venezuela

Can Continental Shelf River Plumes in the Northern and Southern Gulf of Mexico Promote Ecological Resilience in a Time of Climate Change?

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