Search results for " taxonomy."
showing 10 items of 313 documents
Supplementary material 4 from: Vecchi M, Stec D (2021) Integrative descriptions of two new Macrobiotus species (Tardigrada, Eutardigrada, Macrobiotid…
2021
Partitions and models selection results
Supplementary material 3 from: Vecchi M, Stec D (2021) Integrative descriptions of two new Macrobiotus species (Tardigrada, Eutardigrada, Macrobiotid…
2021
Thorpe normalization calculations and results
Living Coccolithophores from the Gulf of Sirte (Southern Mediterranean Sea) during the summer of 2008
2012
The Gulf of Sirte is a largely unexplored area in the southernmost Mediterranean Sea.We are presenting here 2008 summer data on the distribution pattern of living coccolithophores, a main phytoplankton calcifying group, in 105 samples from 20 stations. The survey includes coastal and offshore stations, enabling us to provide indications on the dynamics of phytoplankton productivity in relation to oceanographic processes. The total coccosphere concentrations show higher values in the offshore stations and lower ones for coastal sites. Umbellosphaera tenuis, Emiliania huxleyi, Florisphaera profunda, Syracosphaera pulchra HOL (Calyptrosphaera oblonga) and Rhabdosphaera spp. dominate the assemb…
Sisubiotus hakaiensis sp. nov. (Tardigrada, Macrobiotidae), a new tardigrade species from Calvert Island (British Columbia, Canada)
2022
Tardigrades reports from British Columbia (Canada) trace back to 1908 and numerous species have been recorded from this region, despite the relatively few published sampling studies. We describe by integrative taxonomy (light microscopy morphology, morphometrics, and DNA sequencing) a new tardigrade species, Sisubiotus hakaiensis sp. nov. from the British Columbia central coast. The new species has been found in moss collected from a vertical rock outcrop near the Hakai Institute Calvert Island Field Station. Sisubiotus hakaiensis sp. nov. differs from all the other known species in the genus by the presence of a labyrinthine layer inside the egg process walls, whereas no consistent differe…
A new species of Silene sect. Dipterosperma (Caryophyllaceae) from Sicily
2012
Silene kemoniana, a new species of the section Dipterosperma from NW Sicily, is described and illustrated. It is a therophyte that occurs in mountains near Palermo, where it grows on Mesozoic limestones in xerophilous garigues. Its relationships with S. colorata and allied species are also examined. A key of the species belonging to sect. Dipterosperma is provided. Se describe e ilustra Silene kemoniana, una nueva especie del NW de Sicilia perteneciente a la sección Dipterosperma. Se trata de un terófito que habita en algunas montañas próximas a Palermo, donde crece sobre calizas mesozoicas entre matorrales mediterráneos xerófilos. Se estudian sus relaciones con S. colorata y otras especies…
Late Quaternary marine ostracods of the Basque Basin (S Bay of Biscay): taxonomy and distribution
2018
Late Quaternary taxonomy and ecologic and age distributions of ostracods from the Basque Basin (S Bay of Biscay) are described. More than forty-four thousands ostracod specimens have been obtained from one hundred surface samples and core samples from six cores located in shelf and upper bathyal depths and other infrabathyal core as comparative deep reference. A total of 155 species have been taxonomically described, belonging to 67 genera. Most characteristic species (123) have been SEM figured, and ecologic-geographic distributions and ages have been provided for all species. The resulting database will be a useful help for palaeoceanographic and palaeoclimatologic studies of the region.
Hieracium hypochoeroides subsp. montis-scuderii (Asteraceae), a new endemic subspecies from Sicily (Italy)
2013
Hieracium hypochoeroides subsp. montis-scuderii, a new subspecies endemic to Sicily, is described and illustrated. It is only known from the carbonate cliffs of Monte Scuderi (Peloritani Mountains, NE-Sicily). Informations on its ecology and taxonomic relationships are provided.
The identity of the tropical African Polichne mukonja Griffini, 1908 (Orthoptera, Tettigoniidae, Phaneropterinae)
2016
Polichne mukonja Griffini, 1908 from Cameroon was hitherto known only from the holotype preserved at the Royal Belgian Institute of Natural Sciences, Brussels. This was probably due to the fact that the genus Polichne Stål, 1874 distributed only in Australia and Papua New Guinea. In view of this distribution, the tropical African species was therefore overlooked in the African literature. The recent discovery of two specimens at the Naturhistorisches Museum, Vienna, now provides us with a better understanding of the identity of this taxon, which is related to the African genus Catoptropteryx Karsch, 1890. Polichne mukonja is here transferred to a new genus Griffinipteryx and both taxa are p…
A systematic review of functional numeracy measures for 9–12 -year-olds: Validity and reliability evidence
2023
This systematic review aimed to summarize the characteristics and the measurement properties of functional numeracy measures developed for use by teachers among 9–12-year-old children with or without mathematical learning difficulties. A systematic search from five databases was conducted based on pre-defined criteria. PRISMA guidelines were followed for reporting the results. The terminology and classification of measurement properties adopted by the COSMIN taxonomy was used. Twenty-one studies of 18 measures met the inclusion criteria. Most of the identified measures did not report on several measurement properties due to incomplete or missing psychometric data. Knowledge of Mathematical …
Pyrus pedrottiana (Rosaceae), a new species from the Nebrodi Mountains (N-E Sicily)
2022
A new species of Pyrus for the dendroflora of Sicily is here described. It is Pyrus pedrottiana, actually considered endemic to the Nebrodi Mountains, a territory which includes the largest wooded area of the island with a high forest biodiversity.In the same area, P. vallis-demonis and P. ciancioi have also been described in recent times. The authors report diagnostic characters to distinguish the new taxon from the other two sympatric species.