par Verleyen, Elie;Sabbe, Koen;Vyverman, Wim;Nicosia, Cristiano 
Référence Archaeological Soil and Sediment Micromorphology, wiley, page (165-170)
Publication Publié, 2017-01
Référence Archaeological Soil and Sediment Micromorphology, wiley, page (165-170)
Publication Publié, 2017-01
Partie d'ouvrage collectif
| Résumé : | A few single-celled organisms, such as diatoms and chrysophytes (together with some lobose testate amoebae, silicoflagellates and radiolarians) produce siliceous cell walls, cysts, skeletons or plates that are preserved in sediments. Chrysophytes are represented in sediments by two forms of siliceous remains, namely disarticulated scales, bristles and spines and their resting stages, called stomatocysts or also sometimes statospores or statocysts. Stomatocysts have been observed in thin sections from dark earth, in which they were used to hypothesize an input of combusted turf or allochtonous sediments from wet areas. This chapter deals with the identification of diatoms and chrysophycean cysts in thin sections and their ecological preferences. Diatoms are the most widely used siliceous bioindicators in archaeological and palaeoecological studies. They can be studied directly in sediment samples from archaeological excavations or from dated sediment cores taken in marine or lacustrine environments close to human settlements. |
