The Hydrogeochemistry of the Karst Aquifer System of the Northern Yucatan Peninsula, Mexico

Perry, Eugene C.; Velazquez-Oliman, Guadalupe; Marín, Luis E.

doi:10.2747/0020-6814.44.3.191

Cited by 174 publications

(222 citation statements)

References 39 publications

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“…1). The Peninsula is characterized by its massive carbonate platform composed of limestone, dolomite, and evaporites, and by its extensive underground karstic system (Perry et al 2002). The age of the platform ranges from Cretaceous to Holocene with the bedrock becoming younger toward the north (Hodell et al 2004;Perry et al 2009;Bauer-Gottwein et al 2011;Perez et al 2011).…”

Section: Study Areamentioning

confidence: 99%

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Textural and Geochemical Features of Freshwater Microbialites From Laguna Bacalar, Quintana Roo, Mexico

Castro-Contreras¹,

Gingras²,

Peçoits³

et al. 2014

PALAIOS

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Microbialites provide some of the oldest direct evidence of life on Earth. They reached their peak during the Proterozoic and declined afterward. Their decline has been attributed to grazing and/or burrowing by metazoans, to changes in ocean chemistry, or to competition with other calcifying organisms.The freshwater microbialites at Laguna Bacalar (Mexico) provide an opportunity to better understand microbialite growth in terms of interaction between grazing organisms versus calcium carbonate precipitation. The Laguna Bacalar microbialites are described in terms of their distinct mesostructures. Stromatolites display internal lamination, attributed to the precipitation of calcite and the upward migration of cyanobacteria during periods of low sedimentation. Thrombolitic stromatolites show internal lamination in addition to internal clotting. The clotting is seen as a result of binding and/or trapping of micritic peloids by cyanobacteria and attributed to periods of high sedimentation. The carbonates in both microbialites had similar C-and Ostable-isotopic signatures, both enriched in 13 C relative to bivalves, suggesting photosynthetic CO 2 uptake was the trigger for carbonate precipitation. This implies that the rate of microbialite growth is largely a function of ambient carbonate saturation state, while the texture is especially dependent on accretion rates and sediment deposition on their surface. Importantly, the coexistence with grazing animals suggests no significant inhibition on microbialite growth, thereby calling into question the decline of microbialite as a result of metazoan evolution. Varying sedimentation rates are likely important in controlling the distribution of thrombolite-stromatolite packages in the geological record, given the importance of this factor at Bacalar.

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Section: Study Areamentioning

confidence: 99%

“…The regional geology has been subdivided into six different hydrogeochemical-physiographical zones: (1) Chicxulub Sedimentary Basin, (2) Cenote Ring, (3) Pock-Marked Terrain, (4) Ticul fault zone, (5) Holbox Fracture zone-Xel-Ha Zone, and (6) the Evaporite Region where Laguna Bacalar is found ( Fig. 1; Perry et al 2002).…”

Section: Study Areamentioning

confidence: 99%

Textural and Geochemical Features of Freshwater Microbialites From Laguna Bacalar, Quintana Roo, Mexico

Castro-Contreras¹,

Gingras²,

Peçoits³

et al. 2014

PALAIOS

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“…The Cenote Azul has unusual water geochemistry and hydrogeological properties according to Perry et al (2002), who considered this system an extreme environment, different to the nearby Lake Bacalar, found 200 m to the East. This effect is reflected in the biota.…”

Section: Discussionmentioning

confidence: 99%

“…The Cenote Azul is the biggest karstic sinkhole (cenote) located in the south of Quintana Roo state, in the Yucatan Peninsula (Mexico). It is in a good status of conservation and has particular properties of water geochemistry (Perry et al, 2002). It is a famous regional touristic attraction and is vulnerable to anthropogenic perturbations derived from population growth, like other freshwater ecosystems in the region (Elías-Gutiérrez et al, 2007;Elías-Gutiérrez et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Faunistic survey of the zooplankton community in an oligotrophic sinkhole, Cenote Azul (Quintana Roo, Mexico), using different sampling methods, and documented with DNA barcodes

Montes-Ortiz

Elías‐Gutiérrez

2018

J Limnol

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This study is the first faunistic inventory of a zooplankton community from an open, karstic and oligotrophic aquatic sinkhole in the south of the Yucatan Peninsula (Mexico), we describe the richness of the zooplankton collected with the combination of plankton nets and light traps of our own design, using morphological and molecular characters to identify the species and demonstrate the effectiveness of only one set of primers to sequence all taxa. Recently, it has been demonstrated that different sampling methods can increase the number of zooplankton species from tropical and temperate systems dramatically. These more effective methods together with DNA barcoding can give a new and more realistic picture of the species dwelling in a freshwater system. In total, we sequenced 268 specimens, and the list of species known in this sinkhole increased from 13 to 77 taxa, with a projection of 87 in total, including cladocerans, copepods, ostracods, fish larvae, tadpoles, rotifers, chironomids, water mites, among others. From the 77 taxa identified by us, 72 BINS (Barcode Index Numbers, equivalent to putative species) were assigned by the BOLD Database (boldsystems.org), and 30 of them are new records for both, BOLD and GenBank (www.ncbi.nlm.nih.gov). There was an essential difference in the number of taxa collected with the plankton nets and the light traps. Only 23 taxa were registered in the nets, representing between 28 and 29% of the total richness, while 67 were present in the light traps representing 87% of the species found. From these, 46 taxa were exclusive to this sampling method. Light traps are an effective method for rapid evaluation of zooplankton. In the future, combining DNA barcoding and high-throughput sequencing methods with more efficient collecting will enable us to perform quick and precise biomonitoring of any aquatic ecosystem, enabling the detection of changes in zooplankton composition resulting from climate change and anthropogenic disturbances. Nevertheless, as a first step it is fundamental to establish a baseline of DNA barcodes for the species in these ecosystems.

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“…Sulfate can derive through 30 runoff from mining and agricultural areas, mobilization from pyrite deposits by oxygen intrusion during desiccation and weathering of rocks containing Sulphur (Holmer and Storkholm, 2001;Lamers et al, 2002). Sulfate contents in groundwaters and surface waters result from dissolution of gypsum and anhydrite occurrences (Perry et al, 2002) and mixing with seawater (Sacks et al, 1995). In Yucatan, a gypsum-rich stratigraphic unit occurs providing a solution-enhanced subsurface drainage Biogeosciences Discuss., https://doi.org /10.5194/bg-2017-390 Manuscript under review for journal Biogeosciences Discussion started: 10 November 2017 c Author(s) 2017.…”

Section: +mentioning

confidence: 99%

Impact of climate and hydrochemistry on shape variation – a case study on Neotropical cytheroidean Ostracoda

Wrozyna¹,

Neubauer²,

Meyer³

et al. 2017

Preprint

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Abstract. How environmental change affects a species' phenotype is crucial not only for taxonomy and biodiversity assessments but also for their application as (paleo-)ecological indicators. Previous investigations addressing the impact of climate and hydrochemical regime on ostracod valve morphology have yielded quite contrasting results. Frequently identified ecological factors influencing carapace shape are salinity, cation and sulphate concentrations and alkalinity. Here, we present a thorough approach integrating data from carapace outline and surface details of the ubiquitous Neotropical cytheroidean 15 ostracod species Cytheridella ilosvayi, as well as several climatic and hydrochemical variables, in order to investigate a potential link between morphology and environmental conditions. A previous study lately demonstrated considerable biogeographical variation in valve morphology among Floridian, Mexican and Brazilian populations of this species. We hypothesize that the climatic differences between the regions it inhabits and associated differences in hydrochemical regimes have influenced valve morphology and eventually led to biogeographically distinctive groups. Generalized least-squares 20Procrustes Analyses based on outline and structural features were applied to left and right valves of adult females and males.The analyses identified relative carapace length and shape symmetry as most important morphological characteristics representing shape change across all datasets. Two-block partial least-squares analyses and multiple regressions indicate strong relationships between morphological and environmental variables, specifically with temperature seasonality, annual precipitation and chloride and sulphate concentrations. We hypothesize that increased temperature seasonality slowed down 25 growth rates during colder months, potentially triggering the development of shortened valves with well-developed brood pouches. Differences in chloride and sulphate concentrations, related to fluctuations in precipitation, are considered to affect valve development via controlling osmoregulation and carapace calcification. These factors represent hitherto unknown drivers for ostracod ecophenotypy and emphasise that environmental predictors for morphological variability are not consistent across non-marine ostracods. 30Biogeosciences Discuss., https://doi

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The Hydrogeochemistry of the Karst Aquifer System of the Northern Yucatan Peninsula, Mexico

Cited by 174 publications

References 39 publications

Textural and Geochemical Features of Freshwater Microbialites From Laguna Bacalar, Quintana Roo, Mexico

Textural and Geochemical Features of Freshwater Microbialites From Laguna Bacalar, Quintana Roo, Mexico

Faunistic survey of the zooplankton community in an oligotrophic sinkhole, Cenote Azul (Quintana Roo, Mexico), using different sampling methods, and documented with DNA barcodes

Impact of climate and hydrochemistry on shape variation – a case study on Neotropical cytheroidean Ostracoda

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