Results 71 to 80 of about 103,905 (335)

Foraminiferal test abnormalities in the western Baltic Sea [PDF]

, 2008
Abnormal tests were commonly found in recent benthic foraminiferal assemblages in two fjords of the Kiel Bay, the western Baltic Sea. We assessed 18 different types of abnormalities, which were classified into five groups: chamber, apertural, umbilical ...
Polovodova, Irina, Schönfeld, Joachim
core   +1 more source

Geochronology of the Whittlesey sedimentary succession, eastern England: The ‘Pompeii’ of the British late Middle Pleistocene to Holocene record

Journal of Quaternary Science, EarlyView.
Abstract The sedimentary succession at Whittlesey preserves a unique British late Middle Pleistocene to Holocene record back to a time equivalent to at least marine oxygen isotope stage 8 (ca. 250 ka). This study builds on previously published sedimentology, geochronology and palaeoecology results to establish 20 sedimentary facies associations, with ...
H. E. Langford, M. D. Bateman, R. M. Briant, D. J. Horne   +3 more
wiley   +1 more source

Paleocene orthophragminids from the Lakadong Limestone, Mawmluh Quarry section, Meghalaya (Shillong, NE India). Implications for the regional geology and paleobiogeography [PDF]

, 2018
The late Paleocene orthophragminids, hitherto poorly known from the Himalayan foreland basins, are studied from the Lakadong Limestone in Meghalaya, northeastern India, in order to establish a systematic, biostratigraphic, and paleobiogeographical ...
Barattolo, Filippo, Drobne, Katica, Pereira, Christer, Pignatti, Johannes, Saraswati, Pratul Kumar, Yücel, Ali Osman, Özcan, Ercan   +6 more
core   +1 more source

Deciphering the Variability in Mg/Ca and Stable Oxygen Isotopes of Individual Foraminifera

Paleoceanography and Paleoclimatology, 2019
Foraminifera are commonly used in paleoclimate reconstructions as they occur throughout the world's oceans and are often abundantly preserved in the sediments. Traditionally, foraminifera‐based proxies like δ18O and Mg/Ca are analyzed on pooled specimens
J. Groeneveld, S. Ho, A. Mackensen, M. Mohtadi, T. Laepple   +4 more
semanticscholar   +1 more source

Holocene climate oscillations, seismotectonic events and human–environmental interactions reconstructed from the Giannades palaeolake on Corfu (Eastern Mediterranean, Greece)

Journal of Quaternary Science, EarlyView.
ABSTRACT The Mediterranean is particularly sensitive to rapid climate changes (RCCs) during the Holocene. An increasing number of natural climate archives revealed that socio‐economic developments were influenced by such RCCs since the Palaeolithic. However, multi‐millennial and high‐resolution archives are still rare and often located in mountainous ...
Esra Reichert, Peter Fischer, Bernd Zolitschka, Tina Georg, Lea Obrocki, Denis Scholz, Katja Sporn, Andreas Vött   +7 more
wiley   +1 more source

Marine trophic architecture and hidden ecological connections in the Strait of Magellan: keystone species and ecosystem resilience

Oikos, EarlyView.
Understanding the ecological implications of species coexistence is central to biodiversity studies and to identify environmental and anthropogenic drivers of ecosystem dynamics, where ecological network analysis offers valuable insights. This study examines the complexity, structure, and potential responses to disturbances of the Strait of Magellan's ...
Claudia D. Andrade, Taryn Sepúlveda, Cristóbal Rivera, Cristian Aldea, Tomás I. Marina   +4 more
wiley   +1 more source

Tubular agglutinated foraminifera as indicators of organic carbon flux [PDF]

, 1995
The dimensions of tubular agglutinated foraminifera such as Rhizammina and Rhabdammina respond in a predictable manner to changes in the flux of organic carbon to the sea floor. In both the modern western North Atlantic and in an ancient example (the K/
Kaminski, M.A., Kuhnt, W.
core  

Calcium isotopic composition of high-latitude proxy carrier Neogloboquadrina pachyderma (sin.) [PDF]

, 2009
The accurate reconstruction of sea surface temperature (SST) history in climate-sensitive regions (e.g. tropical and polar oceans) became a challenging task in palaeoceanographic research.
Darling, K. F., Eisenhauer, Anton, Hippler, D., Kozdon, Reinhard, Nagler, T. F.   +4 more
core   +5 more sources

Digitizing collections to unlock the full potential of palynology: A case study with the Smithsonian palynology collection

PLANTS, PEOPLE, PLANET, EarlyView.
Large palynological collections have been built over decades and contain vital information. However, they are often difficult to access and use effectively. What is the point of having such collections if they are not fully utilizable? To solve this problem, we digitized the Smithsonian palynological collection using both light and confocal microscopy.
Carlos Jaramillo, Surangi W. Punyasena, Daurys de Alba, Roxana Alveo, Angelica Arcila, Jorge Bermudez, Jonatan Bustos, Dayenari Caballero‐Rodriguez, Karen Cardenas, David Caro, Francy Carvajal, Ivonne Marcela Castañeda, Shara Chaves, Carlos D'Apolito, Andres Diaz‐Jaramillo, Laura Diaz, Luisa Gomez, Mauricio León‐Carreño, Paula Lopera, Maria Alejandra Lopez, Priscila Lopez, Luke Mander, Jhonatan Martínez Murcia, Carlos Moreno, Enrique Moreno, Enrique Neyra, Brenda Orosco, Jhon Ortiz, Natalia Ossa, Natalia Ovalle, Carolina Ovalle, Angelo Plata, Ingrid Romero, Bruno Scudeiro, Silane A. F. da Silva Caminha, Axel Tejada‐Fajardo, Vinicius Do Valle, Thiago Wood   +37 more
wiley   +1 more source

Changing atmospheric Δ^(14)C and the record of deep water paleoventilation ages [PDF]

, 1997
We propose a new calculation method to better estimate the deep water ventilation age from benthic-planktonic foraminifera ^(14)C ages. Our study is motivated by the fact that changes in atmospheric Δ^(14)C through time can cause contemporary benthic and
Adkins, Jess F., Boyle, Edward A.
core   +1 more source