Results 21 to 30 of about 412 (115)

Nitrogen is unlikely to consistently limit primary productivity in most tropical lakes

Ecosphere, Volume 14, Issue 3, March 2023., 2023
Abstract Despite mounting evidence that tropical lakes may experience an array of phytoplankton nutrient limitation regimes, references to low‐latitude lakes being predominantly nitrogen limited remain common in the literature. To assess the current understanding of nutrient limitation regimes in tropical lakes, we performed a literature review with ...
Jemma M. Fadum, Ed K. Hall
wiley   +1 more source

Diversity and distribution of lacustrine diatoms along the Trans‐Mexican Volcanic Belt

Freshwater Biology, Volume 68, Issue 3, Page 391-405, March 2023., 2023
Abstract The Trans‐Mexican Volcanic Belt is recognised as a highly biodiverse zone and we present a study of diatom diversity and species distributions in its lakes. We aimed to identify diatom taxa with the highest regional occupancy, explore diversity at a regional level, identify the main variables associated with species distributions, and present ...
Avendaño Diana, Caballero Margarita, Vázquez Gabriela   +2 more
wiley   +1 more source

Planktonic microbial communities from microbialite‐bearing lakes sampled along a salinity‐alkalinity gradient

Limnology and Oceanography, Volume 67, Issue 12, Page 2718-2733, December 2022., 2022
Abstract Continental freshwater systems are particularly vulnerable to environmental variation. Climate change‐induced desertification and the anthropogenic exploitation of hydric resources result in the progressive evaporation and salinization of inland water bodies in many areas of the globe.
Miguel Iniesto, David Moreira, Karim Benzerara, Guillaume Reboul, Paola Bertolino, Rosaluz Tavera, Purificación López‐García   +6 more
wiley   +1 more source

Alkaline phosphatases in microbialites and bacterioplankton from Alchichica soda lake, Mexico [PDF]

FEMS Microbiology Ecology, 2014
Dissolved organic phosphorus utilization by different members of natural communities has been closely linked to microbial alkaline phosphatases whose affiliation and diversity is largely unknown. Here we assessed genetic diversity of bacterial alkaline phosphatases phoX and phoD, using highly diverse microbial consortia (microbialites and ...
Patricia M, Valdespino-Castillo, Rocio J, Alcántara-Hernández, Javier, Alcocer, Martín, Merino-Ibarra, Miroslav, Macek, Luisa I, Falcón   +5 more
openaire   +2 more sources

Late Pleistocene and Holocene palaeoecological reconstruction of Lake Texcoco (Basin of Mexico) based on its ostracod record

Journal of Quaternary Science, Volume 37, Issue 7, Page 1270-1279, October 2022., 2022
Abstract We present a palaeohydrological reconstruction of Lake Texcoco over the last 32.7 cal ka based on ostracod records consisting of two species, Candona patzcuaro and Limnocytherina axalapasco. Overall, the presence of these species suggests that Lake Texcoco was highly saline and experienced occasional desiccation periods.
C.M. Chávez‐Lara, S. Lozano‐García, B. Ortega‐Guerrero, M. Caballero‐Miranda   +3 more
wiley   +1 more source

20 Years of Global Change on the Limnology and Plankton of a Tropical, High-Altitude Lake

Diversity, 2022
The present long-term (1993–2013) study was aimed at identifying the effects of global change on the environmental characteristics and the plankton community of the tropical, high-altitude Lake Alchichica, Puebla, Mexico.
Javier Alcocer, Alfonso Lugo, Rocío Fernández, Gloria Vilaclara, María Guadalupe Oliva, Luis A. Oseguera, Raúl A. Silva-Aguilera, Óscar Escolero   +7 more
doaj   +1 more source

Micropearls and other intracellular inclusions of amorphous calcium carbonate: an unsuspected biomineralization capacity shared by diverse microorganisms

Environmental Microbiology, Volume 24, Issue 2, Page 537-550, February 2022., 2022
Summary An unsuspected biomineralization process, which produces intracellular inclusions of amorphous calcium carbonate (ACC), was recently discovered in unicellular eukaryotes. These mineral inclusions, called micropearls, can be highly enriched with other alkaline‐earth metals (AEM) such as Sr and Ba.
Inés Segovia‐Campos, Agathe Martignier, Montserrat Filella, Jean‐Michel Jaquet, Daniel Ariztegui   +4 more
wiley   +1 more source

Formation of Magnesium Carbonates on Earth and Implications for Mars

Journal of Geophysical Research: Planets, Volume 126, Issue 7, July 2021., 2021
Abstract Magnesium carbonates have been identified within the landing site of the Perseverance rover mission. This study reviews terrestrial analog environments and textural, mineral assemblage, isotopic, and elemental analyses that have been applied to establish formation conditions of magnesium carbonates.
Eva L. Scheller, Carl Swindle, John Grotzinger, Holly Barnhart, Surjyendu Bhattacharjee, Bethany L. Ehlmann, Ken Farley, Woodward W. Fischer, Rebecca Greenberger, Miquela Ingalls, Peter E. Martin, Daniela Osorio‐Rodriguez, Ben P. Smith   +12 more
wiley   +1 more source

Deposition, burial and sequestration of carbon in an oligotrophic, tropical lake

Journal of Limnology, 2014
The amount of biogenic carbon that may be deposited, buried and eventually preserved (sequestered) in the sediments of a tropical, oligotrophic lake, was evaluated based on i) the temporal variation of the particulate organic carbon (POC) concentration ...
Javier Alcocer, Ana C. Ruiz-Fernández, Elva Escobar, Libia H. Pérez-Bernal, Luis A. Oseguera, Vilma Ardiles-Gloria   +5 more
doaj   +1 more source

Microbial and diagenetic steps leading to the mineralisation of Great Salt Lake microbialites. [PDF]

, 2016
12 pagesInternational audienceMicrobialites are widespread in modern and fossil hypersaline environments, where they provide a unique sedimentary archive.
Anguy, Yannick, Bourillot, Raphaël, Bouton, Anthony, Bundeleva, Irina, Dupraz, Christophe, Franceschi, Michel, Pace, Aurélie, Patrier Mas, Patricia, Pigot, Léa, Sansjofre, Pierre, Serge, Galaup, Thomazo, Christophe, Vennin, Emmanuelle, Virgone, Aurélien, Visscher, Pieter T., Yokoyama, Yusuke   +15 more
core   +5 more sources