Results 161 to 170 of about 80,233 (300)

Polygonal tepee structures of Arabia

The Depositional Record, Volume 12, Issue 1, February 2026.
Tepee structures on Sheybarah Island form polygonal microbial cemented crusts in the intertidal. Radiocarbon dating suggests they formed in the Holocene and reflect minor sea‐level changes, highlighting their value as palaeoenvironmental indicators. Satellite surveys identified 126 polygonal features, including coral reefs that may have developed on ...
Pauline Falkenberg, Sarima Vahrenkamp, Elisa Garuglieri, Alexander Petrovic, Kai Hachmann, Viswasanthi Chandra, Volker C. Vahrenkamp   +6 more
wiley   +1 more source

Taking machine learning with a grain of sand: Sediment Analysis Neural‐network Data‐engine (SAND‐e) reveals sedimentological differences between turbid and clear‐water reefs

The Depositional Record, Volume 12, Issue 1, February 2026.
Using machine learning, researchers can count and crudely identify sand grains from coral reefs automatically. This will allow us to generate larger datasets to answer sedimentological questions. Abstract Sediment is an important facet of sand cay reefs as it is responsible for reef accretion and island formation, with shifts in the proportions of ...
G. William M. Harrison, Teigan G. Collins, Allia Rosedy, Nadia Santodomingo, Willem Renema, Kenneth G. Johnson   +5 more
wiley   +1 more source

Impacts of Near-Future Ocean Acidification and Warming on the Shell Mechanical and Geochemical Properties of Gastropods from Intertidal to Subtidal Zones.

Environmental Science and Technology, 2017
J. Leung, S. Connell, I. Nagelkerken, B. Russell   +3 more
semanticscholar   +1 more source

Hydrothermal dolomitisation of a deep‐water bioherm isolated in a non‐dolomitised intraplatform basin within the Norian Dolomia Principale (Southern Alps, northern Italy)

The Depositional Record, Volume 12, Issue 1, February 2026.
We propose that one of the largest known bioconstructions (the Monte Zenone bioherm) in the Southern Alps, northern Italy, and its growth on a tilted and drowned platform block of the Norian Dolomia Principale was controlled by hydrothermal dolomitisation from fault‐controlled fluids during the Late Triassic–Early Jurassic rifting phase. Dolomitisation
Martin Müller, Stefano M. Bernasconi, Vincenzo Picotti, Jordon D. Hemingway   +3 more
wiley   +1 more source

Tafonomía del gasterópodo cf. Donaldina robusta (Heterobranchia: Streptacididae) del Pensilvánico Medio, Formación La Joya, Sonora, México

Revista de Biología Tropical, 2010
Los gasterópodos son un componente importante en la mayoría de los registros fósiles, sin embargo, las investigaciones se han centrado principalmente en la caracterización de las tafofacies y firmas tafonómicas en ambientes particulares. Se presentan los
Catalina Gómez E, Blanca Buitrón S, Daniel Vachard   +2 more
doaj  

Domed‐rim microbial polygons and their preservation potential

The Depositional Record, Volume 12, Issue 1, February 2026.
Microbially induced sedimentary structures (MISS) derive through interactions between minerals and microorganisms. We define a domed‐rim MISS, morphologically distinct from abiotic mud cracks and demonstrate its potential for long‐term preservation. These structures represent promising biosignatures in ancient environments on Earth and potentially Mars.
Franziska R. Blattmann, Timothy I. Eglinton, Negar Haghipour, Simon E. Rouwendaal, Stefano M. Bernasconi, John M. Rivers, Maria Dittrich, Zulfa Al Disi, Kenneth H. Williford, Fadhil Sadooni, Hamad A. Al‐Saad Al‐Kuwari, Tomaso R. R. Bontognali   +11 more
wiley   +1 more source

Performance Implications of Divergent Shell Size Preferences and Exoskeleton Mass of Two Closely Related Hermit Crabs

Ecology and Evolution, Volume 16, Issue 2, February 2026.
Two co‐occurring species of hermit crabs use very different shell sizes, one species using shells that are too small to accommodate all the carapace or claws. The two crab species were found to have diverged in their adaptations to their environment: one species adopting a suite of traits, including the use of large shells, that enhance protection from
Chloe B. MacLean, Louis A. Gosselin
wiley   +1 more source

Composición, distribución y abundancia de larvas de moluscos gastrópodos en el sur de Quintana Roo, México y norte de Belice

Revista de Biología Tropical, 2000
Para conocer la composición, abundancia y distribución de larvas de gastrópodos, se realizaron muestreos mensuales de abril a diciembre de 1996 en el sur de Quintana Roo, México y norte de Belice.
J Oliva Rivera, A de Jesús Navarrete
doaj  

Demographic Models and Behavioral Assessments Uncover Distinct Species Histories in the Pseudocryptic Nudibranch Genus Hermissenda

Ecology and Evolution, Volume 16, Issue 2, February 2026.
We reconstructed the speciation history of the recently split pseudocryptic nudibranch genus Hermissenda, finding divergence times in the Pleistocene (1.29–0.55 mya). Demographic modeling and behavioral experiments show no gene flow and assortative mating between sympatric species H. crassicornis (s.s.) and H.
Miranda T. Dennis, Austin L. Ka’ala Estores‐Pacheco, Keilan Williams, Russell C. Wyeth, Ángel Valdés, Arne Ø. Mooers, Michael W. Hart   +6 more
wiley   +1 more source

Survey of Tetrodotoxins (TTXs) in Gastropods, Sea Urchins, and Blue Crabs from the Adriatic Sea: First Report in <i>Paracentrotus lividus</i>. [PDF]

Foods
Bacchiocchi S, Siracusa M, Diomedi G, Mazza S, Calandri E, Tavoloni T, Vivani V, Cangini M, Arcangeli G, Losasso C, Rubini S, Di Francesco G, Leoni F, Piersanti A, Barchiesi F.   +14 more
europepmc   +1 more source