Changes in the hydrochemistry of a karstic lake in Yucatan, Mexico

Cejudo, Eduardo; Acosta‐González, Gilberto; Ortega-Camacho, Daniela; Tun-Rosado, Giovani Emmanuel

doi:10.1007/s12665-020-8838-3

Cited by 12 publications

(9 citation statements)

References 33 publications

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“…An increase in temperature could enhance P gross at high pH if there are sufficient nutrients. Environmental conditions of high seawater temperature (Robledo & Freile-Pelegrín, 2005;Rodríguez-Martínez et al, 2010), alkaline pH seawater, likely because of the karstic origins of the Yucatán Peninsula (Cejudo et al, 2020), and pulsatile nutrient enrichment due to the submarine groundwater discharge (Hernández-Terrones et al, 2015), are common in Quintana Roo coastal areas where H. scabra and other Halimeda species colonize shallow environments. Interestingly, in the control treatment (no added nutrients) at low pH and high temperature high P gross was also observed, most probably because at low pH CO 2 availability is higher (Falkowski & Raven, 2007) and an increase in temperature facilitates photosynthesis (Bruno, Carr & O'Connor, 2015;Vásquez-Elizondo & Enríquez, 2016).…”

Section: Discussionmentioning

confidence: 99%

Photosynthetic responses ofHalimeda scabra(Chlorophyta, Bryopsidales) to interactive effects of temperature, pH, and nutrients and its carbon pathways

Zuñiga-Rios

Vásquez-Elizondo

Caamal

et al. 2021

PeerJ

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In this study, we evaluated the interactive effects of temperature, pH, and nutrients on photosynthetic performance in the calcareous tropical macroalga Halimeda scabra. A significant interaction among these factors on gross photosynthesis (Pgross) was found. The highest values of Pgross were reached at the highest temperature, pH, and nutrient enrichment tested and similarly in the control treatment (no added nutrients) at 33 °C at the lowest pH. The Q10 Pgross values confirmed the effect of temperature only under nutrient enrichment scenarios. Besides the above, bicarbonate (HCO3−) absorption was assessed by the content of carbon stable isotope (δ13C) in algae tissue and by its incorporation into photosynthetic products, as well as by carbonic anhydrase (CA) inhibitors (Acetazolamide, AZ and Ethoxyzolamide, EZ) assays. The labeling of δ13C revealed this species uses both, CO2 and HCO3− forms of Ci relying on a CO2 Concentration Mechanism (CCM). These results were validated by the EZ-AZ inhibition assays in which photosynthesis inhibition was observed, indicating the action of internal CA, whereas AZ inhibitor did not affect maximum photosynthesis (Pmax). The incorporation of 13C isotope into aspartate in light and dark treatments also confirmed photosynthetic and non-photosynthetic the HCO3−uptake.

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Section: Discussionmentioning

confidence: 99%

Photosynthetic responses ofHalimeda scabra(Chlorophyta, Bryopsidales) to interactive effects of temperature, pH, and nutrients and its carbon pathways

Zuñiga-Rios

Vásquez-Elizondo

Caamal

et al. 2021

PeerJ

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“…The elemental composition of the soil clearly re ect its sedimentary origin, with calcium as the element comprising 90% of the mineral fraction. The presence of Si and Mg are also result of rock weathering (Cejudo et al 2020). In case of Al, kaolinite is naturally present in young and intermediate karstic landscapes (Bautista et al 2011) and it is commonly in aluminosilicates and oxide minerals.…”

Section: Discussionmentioning

confidence: 99%

Physical and Biogeochemical Characterization of a Tropical Karstic Marsh in the Yucatan Peninsula, Mexico.

Cejudo

Ortega-Camacho

García-Vargas

et al. 2021

Preprint

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Karstic wetlands provide important ecosystem services such as maintenance of hydrological balance, flood regulation, drinking water supply and nutrients cycling. It is important to conserve and maintain karstic wetlands due to its interaction with groundwater systems and its socioeconomic relevance. The objective of this research was to generate base-line knowledge of the microtopography, hydroperiod and biogeochemical characteristics of poorly known tropical karstic marshes by testing two hypotheses, the phreatotrophic nature of tropical karstic marshes, and the alteration of its biogeochemistry by a highway dividing the marsh. The study site is located in the north of the state of Quintana Roo (Mexico), in pseudo-paludal depressions associated to fractures. The water level varied from few centimeters below the ground to more than 100 cm. We demonstrate that the wetland is groundwater-fed with differences among groundwater, interstitial and surface water in almost all parameters measured. The water is calcium bicarbonate type; the main processes occurring are recharge, evaporation and rock dissolution. Our results suggests active denitrification, low phosphates attributed to Ca- and Fe/Al-bound P, elevated alkalinity and sulfate reduction due to anaerobic conditions in water and soil. The soil reflect its sedimentary origin, the bulk density is low with very high water retention capacity. We do not have enough evidence of the highway modifying the biogeochemistry or hydrology of the marsh. These karstic wetlands provide important provisioning and supporting ecosystem services that should be studied, acknowledged and maintained.

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“…Los Leptosols son suelos delgados, común en áreas erosionadas de potencial limitado, algunos suelos negros pueden tener alta concentración de materia orgánica y fósforo (Estrada-Medina et al, 2016) pero la composición mineralógica es similar (Bautista-Zuñiga et al, 2003) por lo cual suponemos que la diferencia en el contenido iónico del agua no es altamente modificada por el suelo, sino por la interacción agua-roca ésta es la que modifica considerablemente la química del agua usada para irrigación. El agua subterránea está frecuentemente saturada por magnesio por disolución de dolomita (Cejudo et al, 2020) y puede estar correlacionado con sulfatos por la disolución de roca (Perry et al, 2002). La procedencia de estos cationes es debida a la disolución de minerales carbonatados (Ledesma-Ruiz, 2015; Kumar et al, 2009).…”

Section: Discussionunclassified

“…Asumimos que este enriquecimiento puede deberse a salinización del agua subterránea (no por intrusión salina) y actividades agroindustriales, ya que la relación Na/Cl difiere de la reportada para agua de mar y agua de lluvia. Las tendencias de iones descritas en estos sitios son comunes para el agua subterránea del noreste de la península de Yucatán (Cejudo et al, 2020).…”

Section: íNdices Agronómicosunclassified

Tendencias en La Biogeoquímica Del Agua Subterránea en La Region Agroindustrial Del Noreste De Yucatán]

Caamal¹,

Smith

Ortega-Camacho³

et al. 2021

Trop Subtrop Agroecosyst

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Background: The state of Yucatan has a significant amount of groundwater, but it is vulnerable to pollution due to agro-industrial contamination given the characteristics of thin soil and calcareous rocks that allow rapid infiltration of water, making easy for dissolved substances to reach the aquifer. The agro-industrial activities in the northeast of the peninsula of Yucatán promote changes in the geochemistry of groundwater in the region. Objective: Hereby, we present the observed changes in the geochemistry of groundwater by comparing three years of groundwater measurements from the agroindustrial area of Yucatan. Methodology: We measured physicochemical parameters, nutrients and ions during three years (2017 - 2019) in 14 wells of the municipalities of Sucilá, Panabá and Tizimín (east Yucatán). Results: Our results of three years show that ammonium, sulfate, chloride and calcium had an increasing trend; whereas nitrate and phosphate show a slight decrease. The agronomic indices SAR, CROSSf and RSC were evaluated to identify risk of sodification or alkalinization of the soil for irrigation. The water-rock interaction imparts special characteristics to groundwater that should be considered for its use in irrigation. Implications. This research updates information on the quality of water for irrigation and provides useful agronomic indices for better agro-industrial practices in the northeast region of Yucatán. Conclusion: The grouping of wells did not completely respond to the spatial location; rather, it might be a combination of seasonal effects, livestock, animal feeding operations and the use of manure and fertilizers, among others. With this research, we propose to establish the groundwater monitoring of the agro-industrial region of the northeast of Yucatan in the medium (5-10 years) and long term (> 20 years).

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Changes in the hydrochemistry of a karstic lake in Yucatan, Mexico

Cited by 12 publications

References 33 publications

Photosynthetic responses ofHalimeda scabra(Chlorophyta, Bryopsidales) to interactive effects of temperature, pH, and nutrients and its carbon pathways

Photosynthetic responses ofHalimeda scabra(Chlorophyta, Bryopsidales) to interactive effects of temperature, pH, and nutrients and its carbon pathways

Physical and Biogeochemical Characterization of a Tropical Karstic Marsh in the Yucatan Peninsula, Mexico.

Tendencias en La Biogeoquímica Del Agua Subterránea en La Region Agroindustrial Del Noreste De Yucatán]

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