Search results for " Taxonomy"
showing 10 items of 352 documents
A multi-locus inference of the evolutionary diversification of extant flamingos (Phoenicopteridae).
2014
9 pages; International audience; BACKGROUND: Modern flamingos (Phoenicopteridae) occupy a highly specialized ecology unique among birds and represent a potentially powerful model system for informing the mechanisms by which a lineage of birds adapts and radiates. However, despite a rich fossil record and well-studied feeding morphology, molecular investigations of the evolutionary progression among modern flamingos have been limited. Here, using three mitochondrial (mtDNA) markers, we present the first DNA sequence-based study of population genetic variation in the widely distributed Chilean Flamingo and, using two mtDNA and 10 nuclear (nDNA) markers, recover the species tree and divergence…
Studies on the genus Capparis L. (Capparaceae) in Lao PDR. VI: a new species from the Bolikhamxai Province
2022
A new species of Capparis, C. phatadke, is described and illustrated from the Bolikhamxai Province, central Lao PDR. The new species is characterized by lianous habit, brown-reddish indumentum, straight stipular thorns, laminar bracts, large flowers arranged in terminal corymbs or subumbels, long filaments and large ovary. It is so far known from a single locality, where has been observed in mixed deciduous forest and secondary forest in a limestone area. Its ecology and phenology are discussed, and its conservation status is assessed.
Il contributo dell'Orto Botanico di Palermo allo studio tassonomico delle flore tropicali
1990
The Palermo Botanical Garden contained, since its foundation, rich collections of tropical and subtropical plants. In the past various botanists like A. Todaro, A. Borzì, G.E. Mattei, D. Lanza, V. Riccobono, A. Terracciano, carried out studies on entities growing in the Garden, describing several new taxa. Taxonomical and phytogeographical researches on the flora of the Horn of Africa have been recently undertaken.
Typification of names inDrabasect.Aizopsis(Cruciferae, Arabideae) based on material from Italy
2013
Names of 20 presumed taxa in Draba sect. Aizopsis, all based on material from Italy, are considered. Full synonymies are provided, and types are designated (for 14 names) or indicated. Most of the taxa are currently considered unworthy of recognition, of which 16 belong to D. aspera sensu lato. However, the question of whether the Sicilian populations might be distinct from the peninsular populations is still unsettled.
Prospero hierae (Hyacinthaceae), a New Species from Marettimo Island (Sicily)
2009
A new species, Prospero hierae C. Brullo, S. Brullo, Giusso, Pavone & Salmeri (Hyacinthaceae), from Island of Marettimo (Egadi Archipelago, Sicily) is described and illustrated. Its chromosome number (2n = 14), leaf anatomy and ecology are examined. This small species with glaucous, adaxially flat leaves is closely related with the taxa belonging to the Prospero autumnale group and, in particular, it shows more affinities with P. corsicum, P. pulchellum and P. minimum.
Hieracium terraccianoi (Asteraceae), a new species endemic to the Pollino National Park (Southern Italy)
2014
Gristina, Emilio Di, Gottschlich, Günter, Raimondo, Francesco M. (2014): Hieracium terraccianoi (Asteraceae), a new species endemic to the Pollino National Park (Southern Italy). Phytotaxa 188 (1): 55-60, DOI: 10.11646/phytotaxa.188.1.8, URL: http://dx.doi.org/10.11646/phytotaxa.188.1.8
A new Diplura species from Georgia caves, Plusiocampa (Plusiocampa) imereti (Diplura, Campodeidae), with morphological and molecular data
2021
A new dipluran species, Plusiocampa (Plusiocampa) imereti Sendra & Barjadze sp. nov., from the deep zone in three caves in the Imereti region, Georgia, is described. This new troglobitic Plusiocampa is an addition to four others known Diplura from around the Black Sea region, two Dydimocampa and two Plusiocampa s. str. The present study also provides the first CO1 sequences for the Plusiocampinae taxa and the first molecular data for cave-dwelling Plusiocampa species. Although bootstrap values were low, the maximum-likelihood phylogenetic tree grouped Plusiocampa (P.) imereti Sendra & Barjadze sp. nov. with two Plusiocampa s. str. species from Eastern Europe. Morphologically, P. (P.…
A new narrow-leaved species of Capparis (Capparaceae) from central Palawan, Philippines
2016
A new species of Capparis, C. tagbanuorum, is described and illustrated from Palawan Island in the Philippines. It is known from a single locality in Mount Victoria, in forest habitats at medium elevation. The new species is characterized by a peculiar leaf morphology, with blade up to 9 times as long as wide, by the racemose inflorescence and by the size of the petals and the number and length of the stamens. The diagnostic characters are discussed and a key is given for the species of Capparis known from the Philippines.
Factors Influencing Soil Organic Carbon Stock Variations in Italy During the Last Three Decades
2010
Soils contain about three times the amount of carbon globally available in vegetation, and about twice the amount in the atmosphere. However, soil organic carbon (SOC) has been reduced in many areas, while an increase in atmospheric CO2 has been detected. Recent research works have shown that it is likely that past changes in land use history and land management were the main reasons for the loss of carbon rather than higher temperatures and changes of precipitation resulting from climate change. The primary scope of this work was to estimate soil organic carbon stock (CS) variations in Italy during the last three decades and to relate them to land use changes. The study was also aimed at f…
Cercospora leaf spot of sugar beet (Cercospora beticola Sacc.) Part I. Biology and occurrence
2019
Cercospora beticola Sacc. jest najgroźniejszym patogenem liści buraka cukrowego we wszystkich rejonach uprawy tej rośliny. W niniejszym opracowaniu zebrano najważniejszą wiedzę dotyczącą pozycji systematycznej, biologii, morfologii grzyba oraz jego żywicieli. Opisano warunki, w których dochodzi do infekcji roślin gospodarza oraz wpływ warunków atmosferycznych na rozwój choroby na roślinach. Podano podstawowe informacje na temat rozprzestrzeniania się oraz zimowania C. beticola w warunkach naturalnych. Opisano wpływ na rośliny gospodarza oraz powodowane straty w plonie korzeni i cukru. Całość zagadnienia omówiono w oparciu o polską i światową szeroką bazę literaturową.