Results 51 to 60 of about 4,336 (192)

Evaporitic Chert Provenance: Evaluating Petrographic and Geochemical Workflows for Source Discrimination

Archaeometry, EarlyView.
ABSTRACT Chert tools were widely used in prehistory by human societies due to their knapping suitability and availability, but their relatively uniform composition, especially in evaporitic cherts, complicates sourcing, requiring specialised analytical methods.
Bruno Gómez de Soler, Pablo Rodríguez‐Salgado, Maurice Brodbeck, Judit Bria, Thomas Belgrano, Julian Menuge   +5 more
wiley   +1 more source

Abundance of microbial community genes encoding terminal proteins of the aerobic and denitrification respiratory chains as indicators of ecohydrologic gradients in a coastal temperate rainforest

Ecological Indicators, 2023
The persistence of soil organic carbon (SOC) is closely linked to the capacity of the soil microbial community to catalyze oxidative degradation of organic matter. This study uses a landscape-scale metagenomics approach to examine the relative abundances
E.A. Kreitinger, D.V. D'Amore, S.M. Bisbing, S.A. Nadeau, J.P. Shapleigh, M.T. Walter   +5 more
doaj   +1 more source

Developing a route towards palustrine synthesis [PDF]

, 2016
Palustrine, a piperidine alkaloid, was retrosynthetically analyzed and two branches of a route to a key intermediate aziridine tried – namely, nitrene formation through UV irradiation and 1,3-dipolar cycloaddition.
Veidenberg, Indrek
core  

Refining the timing of Middle Pleistocene (MIS 12 to MIS 6) ice advances into northern central Europe: sedimentological analysis and single‐grain luminescence dating of glaciotectonic complexes and tunnel‐valley fills

Boreas, EarlyView.
We summarize the current state of knowledge on the age of the Middle Pleistocene ice advances into northern central Europe and provide 25 new single‐grain feldspar luminescence ages of Elsterian and Saalian glacigenic sediments to constrain the age of the ice advances and their tentative correlation with marine isotope stages/substages.
Niklas von Soest, Neda Rahimzadeh, Debra Colarossi, Falko Malis, Tobias Lauer, Wera Sander‐Beuermann, Yvonne Spychala, Christian Brandes, Runa Fälber, Sumiko Tsukamoto, Jutta Winsemann   +10 more
wiley   +1 more source

The potential of using LiDAR and color-infrared aerial imagery for palustrine wetland typology and change

GIScience & Remote Sensing, 2018
Wetlands are dynamic landscapes and their spatial extent and types can change over time. Mapping wetland locations, types, and monitoring wetland typological changes have important ecological significance. The National Wetlands Inventory data suffer from
Haiqing Xu, Michael E. Hodgson, Silvia E. Piovan, Daniel L. Tufford   +3 more
doaj   +1 more source

Geoheritage meaning of past humidity in the central Western Desert of Egypt

International Journal of Geoheritage and Parks, 2023
The central part of the Western Desert of Egypt, where the Bahariya and Farafra oases are situated, possesses many notable geological features. However, to date the related geoheritage information remains incomplete. Field investigation has permitted the
Fatma A. Mousa, Mohamed M. Abu El-Hassan, Hamdalla A. Wanas, Emad S. Sallam, Vladimir A. Ermolaev, Dmitry A. Ruban   +5 more
doaj   +1 more source

Environmental dynamics and timing of the late Eemian interglacial to the Weichselian pleniglacial at Lichtenberg, Germany: implications for the Oerel and Glinde interstadials

Boreas, EarlyView.
The terrestrial sediment archives of northern Germany provide important insights into Late Pleistocene climate variability, but continuous and well‐dated records remain rare. In particular, the age and stratigraphic position of the Oerel and Glinde interstadials within the Early Weichselian to pleniglacial transition remain poorly constrained.
Alexis Badai Samudra, Michael Hein, Martin Theuerkauf, Neda Rahimzadeh, Marcel Weiss, David Colin Tanner, Brigitte Urban   +6 more
wiley   +1 more source

A Trial of Ground‐Based Methods for Controlling Osmunda regalis L. Invasion of Waikato Wetlands, New Zealand

New Zealand Journal of Botany, Volume 64, Issue 4, December 2026.
Over 90% of palustrine wetlands in New Zealand have been lost, and those remaining face ongoing threats such as plant invasions. In the northern North Island, there is concern about widespread invasion of wetlands by royal fern (Osmunda regalis), a fast‐growing exotic fern introduced to New Zealand in 1890.
Charlotte G. Leicester, Susan Emmitt, Christopher H. Lusk   +2 more
wiley   +1 more source

An unusual titanosaur axis from the Upper Cretaceous of Brazil and its significance for sauropod anatomy and systematics

The Anatomical Record, Volume 309, Issue 11, Page 3137-3168, November 2026.
Abstract The Upper Cretaceous São José do Rio Preto Formation (Bauru Group, southeastern Brazil) has yielded a fragmentary but taxonomically diverse record of titanosaur sauropods, although elements from cervical series remain scarce. Here, we describe a nearly complete sauropod axis from the Vila Ventura Paleontological Area, representing an uncommon ...
Bruno A. Navarro, Jeffrey A. Wilson Mantilla, Jhonata H. A. Martins, Fabiano V. Iori, Leonardo S. Paschoa, Alberto B. Carvalho, Joseli M. Piranha, Hussam Zaher   +7 more
wiley   +1 more source

UAS Hyperspatial LiDAR Data Performance in Delineation and Classification across a Gradient of Wetland Types

Drones, 2022
Wetlands play a critical role in maintaining stable and productive ecosystems, and they continue to be at heightened risk from anthropogenic and natural degradation, especially along the rapidly developing Atlantic Coastal Plain of North America. As such,
Narcisa Gabriela Pricope, Asami Minei, Joanne Nancie Halls, Cuixian Chen, Yishi Wang   +4 more
doaj   +1 more source