Results 51 to 60 of about 757 (174)

Caco3 precipitation in multilayered cyanobacterial mats: Clues to explain the alternation of micrite and sparite layers in calcareous stromatolites [PDF]

, 2015
© 2015 by the authors; licensee MDPI, Basel, Switzerland. Marine cyanobacterial mats were cultured on coastal sediments (Nivå Bay, Øresund, Denmark) for over three years in a closed system. Carbonate particles formed in two different modes in the mat: (i)
Fenchel, T, Kaźmierczak, J, Kempe, S, Kremer, B, Kühl, M, Małkowski, K, Łącka, B   +6 more
core   +3 more sources

Preservation in microbial mats: mineralization by a talc-like phase of a fish embedded in a microbial sarcophagus [PDF]

, 2015
Frontiers in Earth Science 3 (2015): 51 This Document is Protected by copyright and was first published by Frontiers. All rights reserved. it is reproduced with permissionMicrobial mats have been repeatedly suggested to promote early fossilization of ...
Benzerara, Karim, Bernard, Sylvain, Buscalioni, Ángela, Guerrero, M. Carmen, Iniesto, Miguel, López-Archilla, Ana, Zeyen, Nina   +6 more
core   +4 more sources

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, Alejandro Novelo-R.   +1 more
doaj   +1 more source

Formation of Mg‐silicates in the microbial sediments of a saline, mildly alkaline coastal lake (Lake Clifton, Australia): Environmental versus microbiological drivers

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, Mónica Sánchez‐Román, Carlos Ayora, Mike Rogerson, Camille Thomas, Rob Van Spanning, Alex Brasier, David Wacey, John J. G. Reijmer   +8 more
wiley   +1 more source

Active eukaryotes in microbialites from Highborne Cay, Bahamas, and Hamelin Pool (Shark Bay), Australia [PDF]

, 2013
Author Posting. © The Author(s), 2013. This is the author's version of the work. It is posted here by permission of Nature Publishing Group for personal use, not for redistribution. The definitive version was published in The ISME Journal 8 (2014): 418–
Beaudoin, David J., Bernhard, Joan M., Edgcomb, Virginia P., Orsi, William D., Summons, Roger E., Visscher, Pieter T.   +5 more
core   +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, N. B. Palacios‐García, K. García‐Macedo, D. Ibarra‐Morales, M. Caballero   +4 more
wiley   +1 more source

Forensic Profiling Analogue Approach for the Investigation of Natural Hazards – A Case Study from Onokoba Elementary School, Unzen Volcano, Japan [PDF]

, 2021
Internal temperature variations of pyroclastic flows and their deposits are arguably the most challenging data to acquire. As a preliminary study of the temperature variation inside pyroclastic flows, the remains of Onokoba Elementary School (Shimabara ...
Bradák, Balázs, Gomez, Christopher, Hotta, Norifumi, Shinohara, Yoshinori   +3 more
core   +2 more sources

Why bacteria are smaller in the epilimnion than in the hypolimnion? A hypothesis comparing temperate and tropical lakes

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, Cristiana Callieri, J. Salvador Hernandez-Aviles, Miroslav Macek   +3 more
doaj   +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

Calidad microbiológica y fisicoquímica del agua en cuatro lagos cráter del estado Puebla, México [PDF]

, 2021
Se realizó la calidad microbiológica del agua (CMA) de cuatro lagos cráter, Alchichica (ALCHI), Atexcac (ATx), La Preciosa (LPr) y Quechulac (QUE), de manera mensual durante un año.
Cabrera, Rubén, Castañeda-Roldan, Elsa I., Cruz-Aviña, Juan Ricardo, Díaz-Larrea, Jhoana, Núñez-García, Laura G.   +4 more
core   +1 more source