Results 51 to 60 of about 1,141 (179)

From Gene Copies to Cell Numbers: Advancing Quantitative Approaches in Protistan Ecology Using Digital PCR

Molecular Ecology Resources, Volume 26, Issue 5, July 2026.
ABSTRACT Quantifying abundances of unicellular eukaryotes (protists) remains a central challenge in microbial ecology, as methodological differences can strongly influence abundance estimates and ecological interpretation. Although molecular tools have thus far greatly improved our understanding of protists, high rRNA gene copy numbers limit ...
Megan Gross, Ulrike Koll, Bettina Sonntag, Thorsten Stoeck   +3 more
wiley   +1 more source

Studies on Mesozoic and Cainozoic Dinoflagellate Cysts

Bulletin of the British Museum (Natural History). Geology. Supplement., 1966
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Davey, Roger Jack, Downie, Charles, Sargeant, William Antony Swithin, Williams, Graham Lee   +3 more
openaire   +2 more sources

Occurrence and germination of dinoflagellate cysts in surface sediments from the Red Sea off the coasts of Saudi Arabia

Oceanologia, 2011
The distribution and abundance of dinoflagellate cyst assemblages were investigated in surface sediments from south-western Red sea coasts of Saudi Arabiaat six sites during March 2010.
Zakaria A. Mohamed, Abdulrahman M. Al-Shehri   +1 more
doaj  

Unifying Retaria Research: A Common Framework for Studying Foraminifera and Radiolaria

BioEssays, Volume 48, Issue 6, June 2026.
Research on Foraminifera and Radiolaria has predominantly focused on their fossil remains. This synthesis identifies the “Big Five” disciplines of a unified Retaria research: diversity and evolution, ecology, life cycles, and ecosystem roles, highlighting this lineage as a model system for understanding life's resilience in a rapidly changing planet ...
Miguel M. Sandin, Nicole L. Coots, Nicolaas Glock, Mattia Greco, Natalia Llopis‐Monferrer, Julie Meilland, Raphael Morard   +6 more
wiley   +1 more source

DINOFLAGELLATE CYSTS AND CALCAREOUS NANNOFOSSILS FROM THE UPPER CRETACEOUS SARACENO FORMATION (CALABRIA, ITALY): IMPLICATIONS ABOUT THE HISTORY OF THE LIGURIDE COMPLEX

Rivista Italiana di Paleontologia e Stratigrafia, 2003
Organic-walled dinoflagellate cysts and calcareous nannofossils recovered from the turbidites of the Saraceno Formation outcropping in the type area (north-eastern Calabria, Italy) are presented. They provide new information about the age of the Saraceno
STEFANO TORRICELLI, MARIA ROSA AMORE
doaj   +1 more source

Rapid sexual reproduction intensifies blooms of a mixotrophic dinoflagellate

Limnology and Oceanography, Volume 71, Issue 6, June 2026.
Abstract Sexual reproduction is fundamental to the ecology and evolution of eukaryotes, yet its dynamics in microbial eukaryotes are often cryptic. Dinophysis are specialist mixotrophs that must balance prey capture, cell division, and sexual recombination during blooms, but relatively little is known about the occurrence and role of sex in their ...
Serena Sung‐Clarke, Nour Ayache, Wenguang Zhang, Mengmeng Tong, Juliette L. Smith, Michael Brosnahan   +5 more
wiley   +1 more source

Bipolar distribution of the cyst-forming dinoflagellate Polarella glacialis [PDF]

Polar Biology, 2003
Morphological investigations of motile cells and cysts of a small dinoflagellate (strain CCMP 2088) isolated from Canadian Arctic waters were carried out under both light and scanning electron microscopy. This species strongly resembled Polarella glacialis (strain CCMP 1383), which up to now was known only from Antarctic sea ice.
Montresor, M., Lovejoy, C., Orsini, L., Procaccini, G., Roy, S.   +4 more
openaire   +2 more sources

Evidence for Limited Atmospheric CO2 Rise at the Miocene Climatic Optimum

Paleoceanography and Paleoclimatology, Volume 41, Issue 6, June 2026.
Abstract The Miocene Climatic Optimum (MCO; 16.9–14.7 Ma) was a relatively warm period with atmospheric CO2 averaging ∼500 μatm but CO2 change across its onset is poorly documented. We present a record of algal 13C‐fractionation covering the Early to Middle Miocene (∼18.5–15 Ma), with a gap at the MCO onset, from Ocean Drilling Program Site 959 in the ...
Evi Wubben, Joost Frieling, Yannick F. Bats, Linda van Roij, Kirsten de Haan, Gert‐Jan Reichart, Francien Peterse, Francesca Sangiorgi, Marcel T. J. van der Meer, Appy Sluijs   +9 more
wiley   +1 more source

Similarities of the K/Pc dinoflagellate cyst associations between South Atlantic and Indian proto-oceans

Geologia USP. Série Científica, 2016
In this contribution we present the composition of the Late Cretaceous / Paleocene dinoflagellate cyst assemblages found in the Pelotas Basin, southern Brazil in order to provide a first paleobiogeographical comparison between this location, India and ...
Júnior Bispo de Menezes, Maria Judite Garcia, Eduardo Premaor, Paulo Eduardo De Oliveira, Mitsuru Arai, Mary Elizabeth Cerruti Bernardes-de-Oliveira, Pauline Sabina Kavali, Mahesh Shivanna   +7 more
doaj   +1 more source

Late Jurassic Carbon Isotope Excursion (Middle Oxfordian Event) Paces With Astronomical Forcing in the Northwestern Tethys

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract Marine carbonate carbon isotopes (δ13C), over orbital to multi‐million‐year timescales, provide critical insight into the carbon cycle connecting Earth's atmosphere, lithosphere, hydrosphere and biosphere. However, the influence of astronomical forcing on deep time carbon cycle dynamics remains poorly constrained.
Deyan Zhang, Su Li, Xu Yao, Chuanlong Mou, Ulrich Heimhofer   +4 more
wiley   +1 more source