Results 41 to 50 of about 252 (128)
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 +5 more
openaire +2 more sources
Identifying microbial life in rocks: Insights from population morphometry
Geobiology, Volume 18, Issue 3, Page 282-305, May 2020., 2020 Abstract The identification of cellular life in the rock record is problematic, since microbial life forms, and particularly bacteria, lack sufficient morphologic complexity to be effectively distinguished from certain abiogenic features in rocks. Examples include organic pore‐fillings, hydrocarbon‐containing fluid inclusions, organic coatings on ...
Joti Rouillard +7 more
wiley +1 more source
Habitat expansion of a tropical chironomid by seasonal alternation in use of littoral and profundal zones [PDF]
, 2023 The consistent warming of tropical lakes at all depths causes rapid development and long persistence of seasonal anoxia in the hypolimnion, which greatly reduces the biodiversity of hypolimnetic benthic invertebrates. Full mixing of the water column in a
Prat i Fornells, Narcís +5 more
core +1 more source
Ciliate food vacuole content and bacterial community composition in the warm-monomictic crater Lake Alchichica, México [PDF]
FEMS Microbiology Ecology, 2011 To evaluate trophic relationships between ciliates and bacterioplankton during the stratification period in a lake, samples from three different layers [the upper part of the metalimnion (UM), the base of the metalimnion (BM) and the hypolimnion] were studied. The autotrophic picoplankton numbers, phylogenetic composition of heterotrophic picoplankton (
Fernando, Bautista-Reyes +1 more
openaire +2 more sources
Seasonal and Interannual Dynamics of Pelagic Rotifers in a Tropical, Saline, Deep Lake
, 2022 This is the first long-term study (monthly samples at two 4-year intervals: 1998 to 2001 and 2013 to 2016) on rotifers in a saline, deep lake. The pelagic rotifer assemblage of Lake Alchichica is simple and comprised by two species, both new and most ...
Javier Alcocer +4 more
core +1 more source
Sedimentology, Volume 72, Issue 5, Page 1518-1547, August 2025.ABSTRACT Recent interest in Mg‐rich silicate formation stems from its role as a valuable palaeoclimatic indicator in fluvio‐lacustrine environments and its insights into metal geochemical cycling. Traditionally, Mg‐silicate genesis in lacustrine contexts is linked to alkaline or saline conditions in closed, evaporitic basins.
Ramon Mercedes‐Martín +8 more
wiley +1 more source
Late Pleistocene–Holocene environmental fluctuations of southern Chihuahua Desert, Mexico
Journal of Quaternary Science, Volume 40, Issue 4, Page 634-644, May 2025.ABSTRACT Paleoenvironmental reconstructions from the Mexican Chihuahua Desert based on biological proxies are scarce, creating a gap in our understanding of the ecological responses to climate change in this water‐scarce region. Here, we present a paleoenvironmental reconstruction based on geochemical data and biological proxies such as ostracods and ...
C. M. Chávez‐Lara +4 more
wiley +1 more source
Calcium carbonate and phosphorus interactions in inland waters
Limnology and Oceanography Letters, Volume 10, Issue 2, Page 158-178, April 2025.Abstract Phosphorus, an element essential to all life, is impacted by calcium carbonate (CaCO3) co‐precipitation and dissolution dynamics across aquatic ecosystems. Changes to climate, hydrology, and eutrophication, coupled with differences in terminology related to naming CaCO3‐producing ecosystems (i.e., chalk, carbonate, karst, travertine), point to
Jessica R. Corman
wiley +1 more source
Journal of Geophysical Research: Biogeosciences, Volume 129, Issue 12, December 2024.Abstract Isotope hydrological studies to understand groundwater‐surface water interactions in tropical, high‐elevation catchments are limited. These interactions are important in controlling lake water residence time, aqueous biogeochemistry, and water availability for downstream communities and ecosystems. To better comprehend the complexity of spatio‐
Germain Esquivel‐Hernández +8 more
wiley +1 more source
Sedimentology, Volume 71, Issue 3, Page 850-870, April 2024.ABSTRACT Lake Van, the world's largest alkaline lake, hosts some of the largest microbialite towers worldwide, which are considered as modern analogues of ancient stromatolites. This study investigates the links between microbialite evolution, geology, climate and hydrology, and the role of biotic and abiotic processes in microbialite growth and ...
M. Namık Çağatay +3 more
wiley +1 more source