Results 61 to 70 of about 6,795 (184)

A reappraisal of the Middle to Later Stone Age prehistory of Morocco Réévaluer la préhistoire du Maroc, du Middle Stone Age au Later Stone Age

Journal of the Royal Anthropological Institute, EarlyView.
Over the last 25 years, perceptions of the early prehistory of Northwest Africa have undergone radical changes due to new fieldwork projects and a corresponding growth in scientific interest in the region. Much of this work has been focused in Morocco, known for its extremely rich fossil and archaeological records in caves and rock shelters.
Nick Barton, Abdeljalil Bouzouggar, Stacy Carolin, Louise Humphrey   +3 more
wiley   +1 more source

Russian wheat aphid: a model for genomic plasticity and a challenge to breeders

Insect Science, EarlyView.
Invasive foundress finds suitable habitat and reproduces through pathogenesis. Wingless females produce life offspring quickly, which leads to high population densities. High population densities result in competition, which may induce epigenetic changes and wing development for dispersal.
Astrid Jankielsohn, Vicky L. Tolmay, Marlon‐Schylor Luke le Roux, Lintle Mohase, Mpho S. Mafa, Vittorio F. Nicolis, Eduard Venter, Nicolaas Francois Visser Burger, Anna‐Maria Botha   +8 more
wiley   +1 more source

An Examination of Six “Nutting Stones” from East Texas for Plant Phytoliths [PDF]

, 2015
In this article we report on an examination of six nutting stones from East Texas sites as well as an exploratory examination of their possible functions.
Bozarth, Steven, Guderjan, Thomas H., Walters, Mark   +2 more
core   +1 more source

Anatomía de las hojas y biomineralización en Empetrum rubrum Valh ex Willd. (Ericaceae). [PDF]

, 2012
The present paper describes and illustrates features of Empetrum rubrum epidermis and transverse leaf section. It also describes and quantifies siliceous and calcium phytoliths.Biomineralization quantification is expressed as the media biomineral content
Arriaga, Mirta Olga, Fabián Zucol, Alejandro, Fernández Pepi, María Gabriela   +2 more
core   +2 more sources

Role of phytolith occluded carbon of cereales plants for climate change mitigation [PDF]

Journal of Water and Land Development
Phytolith-occluded carbon (PhytOC) is highly stable, and constitutes an important source of long-term C storage in agrosystems. This stored carbon is resistant to the processes of oxidation of carbon compounds. In our research phytolith content in barley
Beata Rutkowska, Peter Schröder, Michel Mench, Francois Rineau, Witold Szulc, Wiesław Szulc, Jarosław Pobereżny, Kristjan Tiideberg, Tomasz Niedziński, Evelin Loit   +9 more
doaj   +1 more source

Bridging the Late Antique Gap in Northwest Arabia: New Archaeological Evidence on the Occupation of Wādī al‐Qurā (al‐ʿUlā [AlUla], Saudi Arabia) Between the Third and Seventh Centuries CE

Arabian Archaeology and Epigraphy, EarlyView.
ABSTRACT In 2019, the Dadan Archaeological Project (CNRS/RCU/AFALULA) identified a Late Antique village 1 km south of ancient Dadan in the al‐ʿUlā valley (northwest Saudi Arabia). Three excavation seasons at this site (2021–2023) have uncovered a massive building constructed in the late third or early fourth cent.
Jérôme Rohmer, Abdulrahman Alsuhaibani, Charlène Bouchaud, Elora Chambraud, Vladimir Dabrowski, Hatem Djerbi, Fabien Lesguer, Hervé Monchot, Paul Picavet, Louise Purdue, Bertrand Riba, Shadi Shabo   +11 more
wiley   +1 more source

Phytolith Concentration and Morphological Variation in Dendrocalamus brandisii (Munro) Kurz. Leaves in Response to Sodium Silicate Foliar Application Across Vegetative Phenological Stages

Agronomy
This study investigated the effects of the foliar application of sodium silicate (SS) on phytolith formations in Dendrocalamus brandisii (Munro) Kurz. leaves by analyzing the phytolith concentration, morphological parameters, and assemblage compositions ...
Yuntao Yang, Lei Huang, Lixia Yu, Maobiao Li, Shuguang Wang, Changming Wang, Hui Zhan   +6 more
doaj   +1 more source

Lithic analysis in African archaeology: Advances and key themes

Archaeometry, EarlyView.
Abstract Stone artifacts (lithics) preserve for extended periods; thus they are key evidence for probing the evolution of human technological behaviors. Africa boasts the oldest record of stone artifacts, spanning 3.3 Ma, rare instances of ethnographic stone tool‐making, and stone tool archives from diverse ecological settings, making it an anchor for ...
Deborah I. Olszewski, Amanuel Beyin, Justin Pargeter   +2 more
wiley   +1 more source

Anthropogenic interference and climatic change control long‐term dissolved silicate variation in the Yellow River

Limnology and Oceanography Letters, Volume 11, Issue 2, March 2026.
Abstract Dissolved silicate (DSi) export from rivers is shaped by both natural processes and human activities. Using long‐term observations at Lijin station combined with chemical weathering and reservoir silicon cycling models, we reconstructed annual DSi fluxes and source‐sink dynamics in the Yellow River Basin since the 1980s.
Ke Wang, Fuxia Yang, Tiezhu Mi, Zhigang Yu, Hongtao Chen, Qingzhen Yao   +5 more
wiley   +1 more source

Plant uses in different bronze and iron age settlements from the Nuoro province (Sardinia). The results of phytolith analyses from several ceramic fragments and grinding stones. [PDF]

, 2014
Ceramic vessels and milling stones are important components of the archaeological record in several Nuraghi from the Pranemuru Plateau (Sardinia). To obtain information on the possible uses of the milling stones and the content vessels is of great ...
Albert Cristóbal, Rosa Maria, Portillo Ramírez, Marta, 1976-   +1 more
core