Results 61 to 70 of about 8,102 (227)

Trophic Changes off Southwest Greenland During the Holocene and Their Influence on Carbon Burial

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract Organic carbon (OC) burial in sediments is partly controlled by catabolic biodegradation and remineralization by heterotrophic bacteria, but long‐term records of these bacterially‐mediated processes have not been available. Here, we use stable hydrogen isotope ratio of the saturated C16 fatty acid (δ2HC16:0) as a proxy of the prevalence of ...
Estelle Allan, Yunfeng Wang, Anne de Vernal, Yves Gélinas, Alfonso O. Mucci, Marit‐Solveig Seidenkrantz, Peter M. J. Douglas   +6 more
wiley   +1 more source

Modulation of ecdysal cyst and toxin dynamics of two Alexandrium (Dinophyceae) species under small-scale turbulence [PDF]

, 2007
Some dinoflagellate species have shown different physiological responses to certain turbulent conditions. Here we investigate how two levels of turbulent kinetic energy dissipation rates (epsilon = 0.4 and 27 cm(2) s(-3)) affect the PSP toxins and ...
Berdalet, E., Bolli, L., Garces, E., Guadayol, Oscar, Llaveria, G., Peters, F., van Lenning, K.   +6 more
core   +4 more sources

Building like a Coral—Parallelized, Multiscale Biofabrication

Advanced Materials, Volume 38, Issue 17, 20 March 2026.
Corals build stiff, strong, and inherently circular skeletal materials under resource‐ and energy‐limited conditions—offering blueprints for transformative materials. We synthesize the current understanding of coral biomineralization and reframe coral growth as a multiscale, parallelized biofabrication process.
Asma Rehman, Marta Peña Fernández, Kristina K. Beck, Gavin L. Foster, Sebastian J. Hennige, Uwe Wolfram   +5 more
wiley   +1 more source

Regional geothermal aquifer architecture of the fluvial Lower Cretaceous Nieuwerkerk Formation – a palynological analysis [PDF]

, 2017
The primary challenge for efficient geothermal doublet design and deployment is the adequate prediction of the size, shape, lateral extent and thickness (or aquifer architecture) of aquifers.
Donselaar, Marinus E., Mijnlieff, Harmen F., Munsterman, Dirk K., Vondrak, Andrea, Willems, Cees J.L.   +4 more
core   +2 more sources

New Zealand Geological Timescale 2025

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
New Zealand Geological Timescale 2025 (NZGT 2025) is the first comprehensive update and revision of the New Zealand Geological Timescale in a decade. The criteria used to establish age ranges of New Zealand Stages within the NZGT have been reviewed, calibrated, and revised where required against the 2023/04 International Chronostratigraphic Chart and ...
Christopher D. Clowes, James S. Crampton, Kyle J. Bland, J. Ian Raine, Andrew F. Boyes, Hamish J. Campbell, Erica M. Crouch, Martin P. Crundwell, Neville Hudson, Elizabeth M. Kennedy, Donald A. B. MacFarlan, Hugh E. G. Morgans, Marcus D. Richards, Matthew W. Sagar   +13 more
wiley   +1 more source

First evidence of Campanian-Maastrichtian shallow marine deposits from eastern Atlantic margin (Doualasub-basin, Cameroon): Palynological and sedimentological approaches

Geosystems and Geoenvironment
Integration of facies analysis with organic microfossils (mainly dinoflagellate cysts) provides insights into the paleoenvironmental reconstruction of the onshore part of the Douala sub-basin of Cameroon.
Milan Stafford Tchouatcha, Cecile Olive Mbesse, Magdy Salah Mahmoud, Amr Said Deaf, Jeannette Ngo Elogan Ntem, Miran Mostafa Khalaf   +5 more
doaj   +1 more source

Ingestion of Alexandrium pacificum Cysts by a Deposit Feeder: An Option for Ecosystem‐Based Approach Benefiting Aquaculture and Coastal Communities?

New Zealand Journal of Marine and Freshwater Research, Volume 60, Issue 1, March 2026.
Harmful algal blooms caused by the paralytic shellfish toxin‐producing species Alexandrium pacificum have increased in recent years in one of the most important aquaculture regions of New Zealand, the Marlborough Sounds. Reoccurring blooms have created large cysts beds in the sediments throughout the sounds. In this region, large populations of the sea
Leonardo N. Zamora, Kirsty F. Smith, Jacqui Stuart, D. Tim Harwood, Shenae L. Wales, Emillie M. F. Passfield, Lincoln Mackenzie   +6 more
wiley   +1 more source

Transcriptome and metabolome analyses of cold and darkness-induced pellicle cysts of Scrippsiella trochoidea

BMC Genomics, 2021
Background Dinoflagellates are a group of unicellular organisms that are a major component of aquatic eukaryotes and important contributors to marine primary production.
Xin Guo, Zhaohui Wang, Lei Liu, Yang Li
doaj   +1 more source

Dinoflagellate cysts from the Bathonian – Tithonian (Jurassic) of North Bulgaria. III. Tithonian dinoflagellate cysts

Geologica Balcanica, 1994
Tithonian marine sediments from 34 boreholes and one outcrop in North Bulgaria have been palynologically examined. They contain rich anа commonly well preserved dinocyst assemblages. This paper includes brief comments on morphology, taxonomy, geographic and stratigraphic distribution of 56 dinocyst taxa and 2 acritarch species which start ill this ...
openaire   +1 more source

Terrestrial Ecosystem Response to Changing Temperature and Seasonality in the Paleocene‐Eocene Thermal Maximum: Shallow Marine Records From the Salisbury Embayment, USA

Paleoceanography and Paleoclimatology, Volume 41, Issue 3, March 2026.
Abstract The Paleocene‐Eocene thermal maximum (PETM, ∼56 Ma) is marked by a massive and rapid rise in atmospheric CO2 and ∼5°C of global warming. It is globally characterized by a negative carbon isotope excursion (CIE), and, at least locally, is preceded by a pre‐onset excursion (POE).
Debra A. Willard, Mei Nelissen, Appy Sluijs, Henk Brinkhuis, Tammo Reichgelt, Marci Robinson, Jean M. Self‐Trail   +6 more
wiley   +1 more source