Results 51 to 60 of about 1,507 (177)

Plant growth conditions alter phytolith carbon

Frontiers in Plant Science, 2015
Many plants, including grasses and some important human food sources, accumulate and precipitate silica in their cells to form opaline phytoliths. These phytoliths contain small amounts of organic matter (OM) that are trapped during the process of ...
Kimberley L Gallagher, Alba eAlfonso-Garcia, Jessica eSanchez, Eric O Potma, Guaciara M Santos   +4 more
doaj   +1 more source

Silicon in Plants: Alleviation of Metal(loid) Toxicity and Consequential Perspectives for Phytoremediation

Plants, 2023
For the majority of higher plants, silicon (Si) is considered a beneficial element because of the various favorable effects of Si accumulation in plants that have been revealed, including the alleviation of metal(loid) toxicity.
Daniel Puppe, Danuta Kaczorek, Mathias Stein, Jörg Schaller   +3 more
doaj   +1 more source

The Phytoliths in the Flora of Ecuador project: Perspectives on phytolith classification, identification, and establishing regional phytolith databases [PDF]

Journal of Archaeological Science, 2016
Abstract The Phytoliths in the Flora of Ecuador project was undertaken to establish diagnostic phytolith types and phytolith vegetation signatures to enhance archaeological and paleoenvironmental phytolith applications in the region. In this paper I discuss the “products” of this research, and provide links to on-line resources.
openaire   +1 more source

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

Pollen and phytoliths from fired ancient potsherds as potential indicators for deciphering past vegetation and climate in Turpan, Xinjiang, NW China. [PDF]

PLoS ONE, 2012
It is demonstrated that palynomorphs can occur in fired ancient potsherds when the firing temperature was under 350°C. Pollen and phytoliths recovered from incompletely fired and fully fired potsherds (ca.
Yi-Feng Yao, Xiao Li, Hong-En Jiang, David K Ferguson, Francis Hueber, Ruby Ghosh, Subir Bera, Cheng-Sen Li   +7 more
doaj   +1 more source

The role of the Eastern Mediterranean in human evolution: recent results from Greece Le rôle du Bassin méditerranéen oriental dans l’évolution humaine : résultats récents en Grèce

Journal of the Royal Anthropological Institute, EarlyView.
The Eastern Mediterranean lies directly on the principal migration route for human groups dispersing across Africa, Europe, and Asia. It also encompasses the Balkans, where fauna and flora, as well as hominin populations, are thought to have persisted through glacial periods.
Katerina Harvati
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

Si-FITÓLITOS EM EUDICOTILEDÔNEAS E SEU POTENCIAL NA DESCONTAMINAÇÃO DE SOLOS CONTENDO METAIS PESADOS

Geochimica Brasiliensis, 2020
For the decontamination of soils, rich in heavy metals are proposed various methods and procedures. Among them, one is the phytoremediation. The present study investigates the phytoremediation by phytoliths.
Adolf Heinrich Horn, Heloiza Márcia Fernandes Horn, Regynaldo Arruda Sampaio, Márcio Neves Rodrigues, Anarelly Costa Alvarenga, Igo Fernando Lepsch   +5 more
doaj   +1 more source

Microbotanical evidence of domestic cereals in Africa 7000 years ago. [PDF]

PLoS ONE, 2014
The study of plant exploitation and early use of cereals in Africa has seen over the years a great input from charred and desiccated macrobotanical remains.
Marco Madella, Juan José García-Granero, Welmoed A Out, Philippa Ryan, Donatella Usai   +4 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