Microbial diversity and physicochemical characteristics of tropical karst soils in the northeastern Yucatan peninsula, Mexico

2021 ◽  
Vol 165 ◽  
pp. 103969
Author(s):  
Jazmín Santillán ◽  
Rafael López-Martínez ◽  
Eduardo J. Aguilar-Rangel ◽  
Karina Hernández-García ◽  
María Soledad Vásquez-Murrieta ◽  
...  
2020 ◽  
Vol 66 (1) ◽  
pp. 46-58 ◽  
Author(s):  
Anni Moore ◽  
Melissa Lenczewski ◽  
Rosa Maria Leal-Bautista ◽  
Melvin Duvall

Microbial community composition in selected karst groundwater sites in the Yucatan Peninsula, Mexico, was assessed to determine the environmental variables influencing groundwater microbial diversity. The karst aquifer system is a groundwater-dependent ecosystem and is the world’s second largest underwater karst cave system. The area’s geology allows precipitation to infiltrate into the groundwater system and prevents accumulation of surface water; as such, groundwater is the only source of fresh water on the peninsula. The sampling locations consisted of three karst sinkholes that extend through the freshwater zone into the saline water, and an abandoned drinking water well of an ocean-side resort, during the dry and rainy seasons. The analysis showed that highly diverse microbial communities are present in the Yucatan groundwater, sustained by permanently warm temperatures and high nutrient input from human activity. Proximity to densely populated areas, such as tourist resorts, is the most important factor influencing both the diversity and presence of fecal bacteria and the antibiotic resistance profile.


2015 ◽  
Vol 4 (5) ◽  
pp. 25 ◽  
Author(s):  
Victor M. Moo-Huchin ◽  
Gustavo A. Gonzalez-Aguilar ◽  
Jose D. Lira-Maas ◽  
Emilio Perez-Pacheco ◽  
Raciel Estrada-Leon ◽  
...  

<p>The knowledge regarding the physicochemical characteristics of the honey produced by stingless bees is still limited, mainly due to the high diversity of the floral resources and the low production that is inherent to these species. This manuscript describes the physicochemical characterization of 27 honey samples produced by <em>Melipona beecheii, </em>from the Yucatan Peninsula, Mexico. The objective of this study was to contribute to the establishment of standards for quality control. The following parameters were evaluated in the honey samples: reducing sugars, moisture content, acidity, pH, hydroxymethylfurfural (HMF), ash, soluble solids, formol index, proline and color. Most of physico-chemical parameters fulfilled the quality criteria established by the International Legislation for Apis honey, with the exception of moisture content, which presented higher values; for that, the results indicate that the international standard procedures are not completing adequate for all the parameters analyzed on <em>Apis mellifera</em> honey and therefore is need establish a suitable standard of quality control for honey from <em>Melipona</em>.<em> </em></p>


Author(s):  
Eduardo Cejudo ◽  
Daniela Ortega-Camacho ◽  
Eduardo Arturo García-Vargas ◽  
Elizabeth Hernández-Alarcón

2018 ◽  
Vol 130 (1) ◽  
pp. 45-50 ◽  
Author(s):  
S Guillén-Hernández ◽  
C González-Salas ◽  
D Pech-Puch ◽  
H Villegas-Hernández

2019 ◽  
Author(s):  
Jonathan B. Martin ◽  
◽  
Andrea J. Pain ◽  
Caitlin Young ◽  
Arnoldo Valle-Levinson

2021 ◽  
Vol 38 ◽  
pp. 103028
Author(s):  
Tania A. Gutiérrez-García ◽  
Kyle J. Shaney ◽  
Ella Vázquez-Domínguez ◽  
Jacob Enk ◽  
Joaquín Arroyo-Cabrales

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