Hydrochemistry and carbonate sediment characterisation of Bacalar Lagoon, Mexican Caribbean

Velázquez, Nidia I. Tobón; Vieyra, Mario Rebolledo; Paytan, Adina; Broach, Kyle H.; Terrones, Laura M. Hernández

doi:10.1071/mf18035

Cited by 10 publications

(12 citation statements)

References 35 publications

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“…Water temperature in February averaged 24.05 ± 0.75 °C and in March 24.87 ± 1.80, with the subsequent months about 4 °C warmer, and consistent ( = 28.90 ± 0.55 °C). This change of temperature is less noticeable in deeper systems, such as the nearby Lake Bacalar with a mean depth of 13.3 m (data taken from De Jesús-Navarrete & Legorreta, 2022 ) and an annual variation of approximately 2 °C ( Tobón Velázquez et al 2019 ).…”

Section: Resultsmentioning

confidence: 99%

Discovering the fish fauna of a lagoon from the southeast of the Yucatan Peninsula, Mexico, using DNA barcodes

Uh-Navarrete,

Valdez-Moreno,

Callejas-Jiménez

et al. 2023

PeerJ

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Background Aquatic ecosystems in the tropics are typically environments with a high species richness of fishes. These systems are also among the most vulnerable in the world, threatening the overall biodiversity of tropical regions. As a first step, it is important to enumerate the species in any ecosystem to promote its conservation. This study aims to inventory the ichthyofauna in the Chile Verde Lagoon, Quintana Roo, on the Yucatan Peninsula, a system fortunately well protected in Mexico, based on faunal surveys backed up with mtDNA barcodes. Methods We collected larvae, juveniles, and adults of fishes in the lagoon with a variety of sampling gear targeting various life stages. Species were identified using both morphology and DNA barcodes. The abundance of species and ichthyoplankton biomass (wet weight, suction technique) were calculated from 43 samples. Results We collected 197 adult and juvenile fishes and 3,722 larvae, of which 306 specimens were DNA-sequenced with a success rate of 96.7%. We identified 13 families, 24 genera, and 27 species in our inventory. The species number was estimated to comprise 75% of the potential total richness using the Chao 1 richness estimator. Clupeids and gobiids accounted for 87.9% of the total abundance of fishes, and, together with cyprinodontids, also accounted for the highest ichthyoplankton biomass. Conclusion Adult and juvenile fishes were identified by morphology and meristic values, however larvae required DNA barcoding to identify species. The high biomass and abundance of larvae of clupeids, gobiids and cyprinodontids suggests that the Chile Verde Lagoon may be important for reproduction of these species in the region. Microgobius microlepis, a marine goby species, is reported for the first time in an inland oligohaline system. This study provides a basis for future environmental assessment and biomonitoring of the Chile Verde Lagoon in the Yucatan Peninsula of Mexico.

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Section: Resultsmentioning

confidence: 99%

Discovering the fish fauna of a lagoon from the southeast of the Yucatan Peninsula, Mexico, using DNA barcodes

Uh-Navarrete,

Valdez-Moreno,

Callejas-Jiménez

et al. 2023

PeerJ

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“…The wetlands are bounded to the south by the 891 km 2 Uaymil Flora and Fauna Protected Area (https://www.protectedplanet.net/uaymil-buffer-zone-flora-and-fauna-protection-area) and the 2 773 km 2 Santuario del Manatí extending to the Bahía Chetumal (Morales Vela, 2014; Sánchez‐Sánchez et al, 2009). The western edge of the SKW broadly coincides with the Rio Hondo Fault (Gondwe et al, 2010a, 2010b, 2010c, 2010d), a major SSW–NNE lineament (Figure 4) also bounding Laguna Bacalar to the south (Bauer‐Gottwein et al, 2011; Gischler et al, 2010; Tobón‐Velázquez et al, 2018). The fault has little surface expression further north but appears to focus groundwater flow (Gondwe et al, 2010; Perry et al, 2002).…”

Section: Sian Ka'an Wetlandsmentioning

confidence: 96%

Flooding of a carbonate platform: The Sian Kaʼan Wetlands, Yucatán, Mexico—A model for the formation and evolution of palustrine carbonate factories around the modern Caribbean Sea and in the depositional record

Platt¹,

Wright

2023

The Depositional Record

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The dynamic inter‐relationships between marine and freshwater carbonate depositional environments are illustrated in the Sian Ka'an Wetlands, a 5 280 km2 complex of groundwater‐fed freshwater marshes, lakes and brackish coastal lagoons in the South‐East Yucatán Peninsula (Mexico). The Yucatán Platform was subaerially emergent and extensively karstified during the last glacial maximum at 18, 000 yr bp. The Late Holocene transgression has caused progressive reflooding of the continental margin, backstepping of the MesoAmerican Reef and encroachment of coastal environments into the platform interior as rising groundwaters flood an interconnected cave and sinkhole system and feed seasonal marshes above. The Sian Ka'an Wetlands form a vast palustrine carbonate factory which is directly juxtaposed and dynamically linked with the marine carbonate factory to seaward. Continuing sea‐level rise has caused synchronous landward migration of marginal marine and freshwater environments as beach barriers were breached and palustrine sloughs flooded to form marginal marine seagrass lagoons. The Rio Hondo Fault conditions fluid inflow while the sub‐environments of the Sian Ka'an Wetlands reflect tectonic controls on microtopography and hydroperiod. Modern analogues for the Sian Ka'an Wetlands include the Florida Everglades, formed during transgression of the Florida Platform, and relict marsh environments preserved on leeward shores of Andros, Abaco and other Bahama islands. A wide range of ancient examples deposited in coastal and continental interior settings similarly reflect seasonal aquifer rise in response to marine transgression and/or onlap of late‐stage basin fill onto a karstified pediment. Freshwater palustrine carbonate factories on carbonate platforms are transient deposystems, controlled by subtle water depth, climate, vegetation and hydrological factors while being critically sensitive to sea‐level changes and tectonics. The preservation potential of palustrine carbonates may be relatively low in coastal settings due to erosion or shallow marine overprinting, while greater further inland where marine flooding is rarer and in tectonically subsident continental interior basins where accommodation space is continuously created.

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“…The north zone of tBacalar is characterized by higher electrolytic conductivity, due to the connectivity with other lagoons such as Chile Verde, Salada and the Bay of Chetumal [40,[65][66]. The south of Bacalar, has higher bicarbonate concentration than the North and has higher concentrations of NOx [30,60]. Sulfates are homogeneous throughout the lagoon, as described by Johnson et al, [39] and Beltrán et al, [30].…”

Section: Plos Onementioning

confidence: 99%

“…The Mexican Caribbean is an area whose economy depends mainly on tourism related to its natural resources [60,94]. Particularly within Quintana Roo, places like Cancun and Playa del Carmen that have intense tourist activity, show affectations to the water quality of the underground aquifer systems and cenotes [95][96].…”

Section: Changes In the Bacterial Community Of Microbialites In Bacalmentioning

confidence: 99%

“…This phenomenon is likely to continue and the infrastructure to accommodate these visitors is not available. Tobón-Velázquez et al, [60] mentioned that the lack of infrastructure regulation from the government could result in the degradation of the water quality of Bacalar Lagoon, hence affecting the microbialites.…”

Section: Changes In the Bacterial Community Of Microbialites In Bacalmentioning

confidence: 99%

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The microbiome of modern microbialites in Bacalar Lagoon, Mexico

et al. 2020

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Microbialites are highly diverse microbial communities that represent modern examples of the oldest life forms, stromatolites (dated >3.7 Ga). Bacalar Lagoon, in Mexico, harbors the largest freshwater microbialite occurrences of the world; yet diverse anthropogenic activities are changing the oligotrophic conditions of the lagoon. The objective of this work was to perform a spatial exploration of the microbialites of Bacalar Lagoon, analyze their prokaryote diversity, following a high throughput sequencing approach of the V4 region of the 16S rDNA, and correlate to the environmental parameters that influence the structure of these communities. The results indicate the presence of microbialites throughout the periphery of the lagoon. The microbiome of the microbialites is composed primarily of Proteobacteria (40-80%), Cyanobacteria (1-11%), Bacteroidetes (7-8%), Chloroflexi (8-14%), Firmicutes (1-23%), Planctomycetes (1-8%), and Verrucomicrobia (1-4%). Phylogenetic distance analyses suggests two distinct groups of microbialites associated with regions in the lagoon that have differences in their environmental parameters, including soluble reactive silicate (in the north), bicarbonates and available forms of nitrogen (ammonium, nitrates and nitrites) (in the south). These microbialite groups had differences in their microbiome composition associated to strong anthropogenic pressure on water quality (agriculture, landfill leachate, lack of water treatment infrastructure and intensive tourism), which were related to a loss of microbial diversity.

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Hydrochemistry and carbonate sediment characterisation of Bacalar Lagoon, Mexican Caribbean

Cited by 10 publications

References 35 publications

Discovering the fish fauna of a lagoon from the southeast of the Yucatan Peninsula, Mexico, using DNA barcodes

Discovering the fish fauna of a lagoon from the southeast of the Yucatan Peninsula, Mexico, using DNA barcodes

Flooding of a carbonate platform: The Sian Kaʼan Wetlands, Yucatán, Mexico—A model for the formation and evolution of palustrine carbonate factories around the modern Caribbean Sea and in the depositional record

The microbiome of modern microbialites in Bacalar Lagoon, Mexico

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