Results 21 to 30 of about 43,956 (239)

The onset of grasses in the Amazon drainage basin, evidence from the fossil record [PDF]

, 2020
Poaceae (the grass family) originated in the Cretaceous, but first dominate the palynological records of the Amazon drainage basin (ADB) in the Neogene (23 to 2.5 million years ago (Ma)).
Hoorn, Carina, Kirschner, Judith A.
core   +3 more sources

Earliest filter-feeding pterosaur from the Jurassic of China and ecological evolution of Pterodactyloidea [PDF]

Royal Society Open Science, 2017
Pterosaurs were a unique clade of flying reptiles that were contemporaries of dinosaurs in Mesozoic ecosystems. The Pterodactyloidea as the most species-diverse group of pterosaurs dominated the sky during Cretaceous time, but earlier phases of their ...
Chang-Fu Zhou, Ke-Qin Gao, Hongyu Yi, Jinzhuang Xue, Quanguo Li, Richard C. Fox   +5 more
doaj   +1 more source

The palaeoecology of two Scottish encrinites: Jurassic crinoid assemblages from the Trotternish Peninsula, Isle of Skye, Scotland [PDF]

, 2009
Despite a long history of investigation, articulate crinoids from the Jurassic of Scotland have not received great attention compared to their counterparts in Southern England or continental Europe; this is thought to be largely due to poor preservation.
Clark, N.D.L., Hunter, A.W.
core   +1 more source

High-Resolution Multiproxy Record of Environmental Changes and Anthropogenic Activities at Unguja Ukuu, Zanzibar, Tanzania during the Last 5000 Years

Quaternary, 2023
A high-resolution multiproxy sedimentary record comprising pollen, charcoal, trace element, stratigraphy and particle size data is used to reveal environmental changes from the mangrove ecosystem at Unguja Ukuu, Zanzibar, Tanzania, over the last 5000 ...
Apichaya Englong, Paramita Punwong, Rob Marchant, Tosak Seelanan, Stephanie Wynne-Jones, Prae Chirawatkul   +5 more
doaj   +1 more source

Ascertaining the nature and timing of mire degradation : using palaeoecology to assist future conservation management in Northern England [PDF]

, 2017
This study was initiated under contract VT0419 from English Nature (Natural England) to CECQR. In 2015, additional funding was provided by the Yorkshire Peat Partnership, for 210Pb dating, to refine age–depth estimates.
Alistair Crowle, Dmitri Mauquoy, Frank Chambers, John Daniell, Julia McCarroll, Julia Webb, Nicole Sanderson, null null, Phil Toms, Tim Thom   +9 more
core   +3 more sources

Using Annual Resolution Pollen Analysis to Synchronize Varve and Tree-Ring Records

Quaternary, 2019
Fossil wood and varved lake sediments allow proxy analysis with exceptionally high, (sub-)annual resolution. Both archives provide dating through ring and layer counting, yet with different accuracy.
Martin Theuerkauf, Eike Engelbrecht, Nadine Dräger, Michael Hupfer, Almut Mrotzek, Anja Prager, Tobias Scharnweber   +6 more
doaj   +1 more source

Eastern Beringia and beyond: Late Wisconsinan and Holocene landscape dynamics along the Yukon Coastal Plain, Canada [PDF]

, 2012
Terrestrial permafrost archives along the Yukon Coastal Plain (northwest Canada) have recorded landscape development and environmental change since the Late Wisconsinan at the interface of unglaciated Beringia (i.e.
Fritz, Michael, Lantuit, Hugues, Meyer, Hanno, Pollard, W. H., Preusser, F., Schirrmeister, Lutz, Wetterich, Sebastian   +6 more
core   +1 more source

Lower Wenlock black shales in the northern Holy Cross Mountains, Poland: Sedimentary and geochemical controls on the Ireviken Event in a deep marine setting [PDF]

, 2016
The stratigraphic variability and geochemistry of Llandovery/Wenlock (L/W) Series boundary sediments in Poland reveals that hemipelagic sedimentation under an anoxic/euxinic water column was interrupted by low density bottom currents or detached diluted ...
Bond, David P. G., Marynowski, Leszek, Smolarek, Justyna, Trela, Wiesław   +3 more
core   +1 more source

Geographically weighted models in palaeoecology: R package and application to testate amoebae in peatlands [PDF]

Web Ecology
Transfer function (TF) models are commonly used in palaeoecology for quantitative inference of environmental variables based on biological proxies. Although the existence of spatial structure is well established in ecology, existing TFs do not account ...
S. Erb, S. Erb, S. Erb, S. Erb, M. Mulot, M. Mulot, A. Matei, E. A. D. Mitchell   +7 more
doaj   +1 more source

Influence of palaeoweathering on trace metal concentrations and environmental proxies in black shales [PDF]

, 2017
The mineralogical and chemical compositions of Lower Carboniferous (Tournaisian) marine black shale from the Kowala quarry, the Holy Cross Mountains, Poland, were investigated.
Agnieszka Pisarzowska, Algeo, Algeo, Algeo, Allan, Altabet, Altabet, Anbar, Anthony S. Cohen, Arkadiusz Derkowski, Arnold, Arthur, Averbuch, Baker, Barling, Bauersachs, Behar, Berkowski, Berner, Bolton, Bond, Brantley, Brumsack, Chadima, Chen, Clayton, Clayton, Dalai, Derkowski, Dias, Dickson, Duan, Erickson, Faure, Franke, Freudenthal, Frimmel, Georgiev, German, Goldberg, Gong, Grosjean, Hannigan, Hatch, Helz, Huerta-Diaz, Immenhauser, Jaffe, Jan Środoń, Joachimski, Jones, Keller, Kolowith, Kump, Landais, Lehmann, Leszek Marynowski, Lev, Leythaeuser, Liermann, Littke, Liu, Lo, Lyons, Ma, Macko, Macko, Marynowski, Marynowski, Marynowski, Marynowski, Marynowski, Marynowski, McArthur, McCarty, Michał Rakociński, Morford, Mort, Möbius, Nägler, Obreht, Pearce, Pearce, Perkins, Petsch, Peucker-Ehrenbrink, Pollack, Pope, Popp, Popp, Poulson, Pujol, Rachidi, Racka, Racki, Racki, Rafał Szaniawski, Reitz, Rimmer, Rimmer, Riquier, Rooney, Ross, Rudnick, Sachs, Sackett, Saino, Schmitz, Schoepfer, Siebert, Siebert, Slomp, Szaniawski, Szaniawski, Szulczewski, Tamamura, Torsvik, Tribovillard, Tribovillard, Tulipani, Tuttle, Wignall, Wildman, Williams, Yu, Zwing, Śliwiński, Środoń, Środoń   +128 more
core   +1 more source