Neorhabdocoela oocytes — palaeoecological indicators found in pollen preparations from Holocene freshwater lake sediments

摘要: Abstract Oocytes produced by aquatic flatworms of the order Neorhabdocoela are not destroyed chemical treatment freshwater lake sediments for pollen analytical purposes. Until now these oocytes have commonly been ignored palynologists. We present here first detailed study from Central Europe, and discuss their palaeoecological significance. By analysing slides Boreal Atlantic periods northeast Switzerland, 14 different species types were identified (of 45 central European extant today). Because specificity restriction to certain habitats, allow reconstruction former quality productivity, may help us understand temperature hydrological changes during Quaternary.