Results 41 to 50 of about 477 (162)
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
Journal of Limnology, 2014 Cletocamptus gomezi Suárez-Morales, Barrera-Moreno & Ciros-Pérez (2013) is a recently described new species of meiobenthic Harpacticoida copepod, micro-endemic to Lake Alchichica, Puebla, Central Mexico. Cletocamptus gomezi lives in saline water (K25
Javier Alcocer +3 more
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Journal of Limnology, 2014 The deep benthic communities of tropical lakes are poorly understood with respect to their composition, abundance, biomass and regulatory factors. Whereas the hypolimnia of temperate oligotrophic lakes remain oxygenated, the higher temperatures in ...
María del Carmen Hernández +3 more
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Estimation of the eddy diffusivity coefficient in a warm monomictic tropical Lake
Journal of Limnology, 2016 We used a two-year dataset (1998-1999) of monthly temperature profiles from Lake Alchichica, Mexico to estimate values of the vertical coefficient of eddy diffusivity.
David A. Salas de León +3 more
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Cyanobacterial calcification in modern microbialites at the submicrometer scale [PDF]
Biogeosciences, 2013 The search for microfossils in the geological record has been a long-term challenge. Part of the problem comes from the difficulty of identifying such microfossils unambiguously, since they can be morphologically confused with abiotic biomorphs.
E. Couradeau +6 more
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La vegetación acuática vascular de seis lagos-cráter del estado de Puebla, México
Botanical Sciences, 1984 Las aguas de los seis lagos presentan una elevada concentración de sales y fueron divididos en dos grupos de acuerdo a la concentración de las mismas: el primero, denominado "concentrados" o "salinos'', formado por los lagos Alchichica y Atexcac y el ...
Pedro Ramírez-Gracía +1 more
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The Depositional Record, Volume 12, Issue 1, February 2026.Sediments, unlithified and lithified microbial mats in the Salar de Atacama, are formed by similar pathways involving coupled precipitation of authigenic Mg silicate and calcium carbonate. Differences in products reflect differences in the initial distribution of organic biomass.
Erica P. Suosaari +7 more
wiley +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
Journal of Limnology, 2012 Bacterial size and morphology are controlled by several factors including predation, viral lysis, UV radiation, and inorganic nutrients. We observed that bacterial biovolume from the hypolimnion of two oligotrophic lakes is larger than that of bacteria ...
Roberto Bertoni +3 more
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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