scholarly journals Łąki selernicowe (związek Cnidion dubii Bal.-Tul. 1966) w Polsce [Meadow communities of Cnidion dubii Bal.-Tul. 1966 alliance in Poland]

2014 ◽  
Vol 77 ◽  
pp. 1-142 ◽  
Author(s):  
Tomasz Zauski

The paper contains a characterization of the alliance <em>Cnidion dubii</em> Bal.-Tul. 1966 and of the association<em> Violo-Cnidietum dubii</em> Walther in Tx. 1954, belonging to it, both of which so far unreported from Poland. The syntaxonomy of those units has been based on analytic-synthetical phytosociological studies with the use of numerical classification and ordination methods, mainly of the TWINSPAN program. To demonstrate the distinct character of the units under study from Poland, the alliance <em>Cnidion dubii</em> has been analysed in comparison with the alliances <em>Molinion caeruleae</em> and <em>Alopecurion pratensis</em>. The identify of the association has been established by analysing Polish and European materials. New criteria have been proposed for the diagnosis of the associations of the alliance <em>Cnidion dubii</em> in Central Europe. The rank of some diagnostic species of the association and of the alliance has been verified. The nomenclature of the units has been based on the principles of the Code of phytosociological nomenclature. The association <em>Violo-Cnidietum dubii</em> from the area of Poland has been characterized syntaxonomically, synchorologically and synecologically. Three subassociations have been described: <em>Violo-Cnidietum dubii</em> Walther in Tx. 1954 <em>typicum</em>, <em>V.-C.d. stellarietosum palustris</em> T. Załuski subass. nova, <em>V.-C.d. galietosum veris</em> T. Załuski subass. nova, including eight variants. At the same time, the distinct character of communities with <em>Cnidium dubium</em> and <em>Molinia caerulea</em> has been demonstrated, and they have been classified with <em>Molinietum caeruleae</em> W. Koch 1926 <em>cnidietosum dubii</em> T. Załuski subass. nova.

Author(s):  
L. E. Ryff

The aim of the work is to revise the prodrome and diagnostic species of the classes of natural dry grassland and phrygana vegetation of the Southern Crimea based on own field studies and modern literature data. Methods. The work is based on the Braun-Blanquet approach to classification of vegetation communities. Higher syntaxonomy units and lists of diagnostic species are given in accordance with “Vegetation of Europe ...” (EuroVegChecklist), nomenclature of syntaxon according to the requirements of the “International Code of Phytosociological Nomenclature”, nomenclature of taxon according to the Catalogue of Life and Euro + Med PlantBase international databases. Results. A preliminary version of the prodrome of natural dry grassland and phrygana vegetation of the Southern Crimea has been compiled. It was established that this vegetation type includes communities of 12 classes: Sedo-Scleranthetea , Trifolio-Geranietea sanguinei , Festuco-Brometea , Festuco-Puccinellietea , Kalidietea foliati , Ononido-Rosmarinetea , Cisto-Lavanduletea stoechadis , Helianthemetea guttati , Stipo-Trachynietea distachyae , Saginetea maritimae , Asplenietea trichomanis , Drypidetea spinosae. There are 14 orders, 14 alliances and 30 associations, three of which need to be validated. The classes of rock and scree vegetation ( Asplenietea trichomanis , Drypidetea spinosae ) are described in most detail. For most classes, a significant part of the classification units has not yet been established. Conclusion. The preliminary prodrome of the natural dry grassland and phrygana vegetation of the Southern Crimea includes 12 classes, 14 orders, 14 alliances and 30 associations. A great part of syntaxa has not yet been established. The composition of the diagnostic species indicates a significant floristic proximity of the classes Sedo-Scleranthetea - Helianthemetea guttati - Stipo-Trachynietea distachyae , Festuco-Puccinellietea - Kalidietea foliati , Ononido-Rosmarinetea - Cisto-Lavanduletea stoechadis .


2021 ◽  
Vol 2 (9) ◽  
pp. 76-83
Author(s):  
Yury Semenishchenkov ◽  

The article presents the typification and correction of the syntaxa of grass vegetation, established at different times for the Southern Nechernozemye of Russia. 3 associations and 5 subassociations are validated according to the requirements of the International Code of Phytosociological Nomenclature (Theurillat et al., 2021). The description of syntaxa is given according to the plan: name, synonyms, nomenclature type (holotype or lectotype), diagnostic species (their single blocks were used without dividing into characteristic, differential and constant), definition (verbal diagnosis). The belonging of associations and subassociations to the highest classification units is indicated in accordance with the modern hierarchical system of floristic classification of vegetation in Europe (Mucina et al., 2016). All of these units belong to the group of Intrazonal boreo-temperate grasslands and heath.


2017 ◽  
Vol 20 ◽  
pp. 43-50 ◽  
Author(s):  
Michal Tupec ◽  
Veronika Hýsková ◽  
Kateřina Bělonožníková ◽  
Jakub Hraníček ◽  
Václav Červený ◽  
...  

2021 ◽  
Vol 12 (3) ◽  
Author(s):  
O Klyachenko ◽  
◽  
I Shliakhtun ◽  

National Nature Park “Pyryatynsky” is a valuable reserve of flora and vegetation of the Left-Bank Dnipro. The extensive hydrological network of the Udai River and the wide representation within this nature reserve of floodplain reservoirs are the reason for the high diversity of plant communities of higher aquatic vegetation. In this article we classified the communities of order Callitricho-Batrachietalia in National nature park "Pyryatynskyi" and identify the features of their syntaxonomic and ecological differentiation. Fragmentary and non-comlete information about this type of vegetation are existed in literature, however, without geobotanical releves and detailed characteristics of the structure of phytoceonoses, synecology and synchorology. All obtained results based on original field data. In total, 22 geobotanical releves were performed during the period 2010–2017. The description of communities was carried out within their natural boundaries. Treatment of fitosociological data was performed with the JUICE software package. The nomenclature of syntaxons was consistent with the International Code of Phytosociological Nomenclature (ICFN).The order of Callitricho-Batrachietalia on the territory of NPP "Pyriatynsky" is represented by alliance Batrachion aquatilis Gehu 1961 and 4 associations (Batrachietum aquatilis Gehu 1961, Potameto perfoliati–Batrachietum circinati Sauer 1937, Hottonietum palustris Sauer 1947, Veronico beccabungae–Callitrichetum stagnalis (Oberdorfer 1957) Th. Müller 1962). This is first prodrome of order Callitricho-Batrachietalia for territory of National Nature Park “Pyryatynskyi”. The communities of this syntaxon occupy small areas and have a limited distribution in the region. Most of them are rare and vulnerable to changes in environmental conditions. Monitoring of their structure, chorology and dynamics is an important task to maintain and preserve the species and coenotic diversity of NPP "Pyryatynsky".


2021 ◽  
Vol 42 ◽  
pp. e68062
Author(s):  
Pauline Delbosc ◽  
Mathieu Le Dez ◽  
Jean-Bernard Bouzillé ◽  
Kevin Cianfaglione ◽  
Frédéric Bioret

Carici-Genistetea lobelii Klein 1972 corresponds to cyrno-sardinian oromediterranean cushion scrub and related grasslands. In France, this class is only present in Corsica and the syntaxonomic scheme is debated among phytosociologists. The aim of this paper is to highlight the main plant associations of Carici-Genistetea lobelii Klein 1972 and to define the diagnostic species for each phytosociological unit. We compiled 519 vegetation plots and we applied EuropeanVegetationChecklist expert system for the classes of European vegetation to retain only vegetation plots belonging to Carici-Genistetea lobelii. We obtained a dataset with 189 vegetation plots and we classified them with Modified TWINSPAN classification. Our analyses recognized 6 plant associations and 3 sub-associations already described in the literature; and to describe a new alliance corresponding to the supra-mediterranean vegetations (Genistion salzmannii), a new association (Brimeuro fastigiatae-Juniperetum nanae) and its sub-association (alnetosum suaveolentis). For each of them, we identified diagnostic, constant and dominant species and produced their distribution map. Formal definitions were then written for each phytosociological unit (from subassociation to class) and grouped in an expert system to automatically classify the vegetations of Carici-Genistetea lobelii.


2021 ◽  
Author(s):  
A. Nurhasan

Pertamina EP is operating a small block in Offshore North Sumatera Basin where a couple of the fields are producing gas and condensate from the Belumai Carbonate. However, the wells production is depleting and several delineation wells are unable to find additional reserves, it is important to find a new play within the block. Few discoveries in the Middle Baong Sand (MBS) reservoir suggested a promising stratigraphic play to be explored, but it requires more detailed characterization of the reservoir extent. The Malacca strait-sourced MBS consists of several deposited sand packages during a mega sequence. The term MBS might represent a deltaic environment from a transgressive system tract of some marine shore bar or a basin floor fan. Each system has a distinct character (thickness, net to gross ratio, distribution) that must be evaluated before proposing an exploration well. The depositional environment and reservoir distribution are interpreted and modeled using regional 2D seismic and high-quality 3D seismic. Paleo-bathymetric interpretation from well samples shows a good correlation with the palinspastic reconstruction. The result shows that the Pertamia EP working area is located in the shore bar depositional environment. Seismic attributes are used to delineate reservoir distribution within the working block and well logs are used to constrain prospective sand bodies and water zones identification. Furthermore, source rock maturation and migration path and hydrocarbon occurrence from the discovery wells have been evaluated for hydrocarbon prospecting and risking. This study suggests a promising lead for hydrocarbon exploration in the study area and opens up a new opportunity for an underexplored play.


2017 ◽  
Vol 56 (7) ◽  
pp. 1827-1845 ◽  
Author(s):  
Fabian Senf ◽  
Hartwig Deneke

AbstractThe growth phase of convective storms and their transition to maturity is investigated based on more than 100 cases selected from the years 2012–14 over central Europe. Dynamical growth properties as well as cloud-top glaciation and microphysical characteristics are derived from the SEVIRI imaging radiometer aboard the geostationary Meteosat satellites. In addition, onset and intensity of surface precipitation are related to growth and glaciation processes using observations from the radar network of the German Weather Service. The majority of analyzed cases shows a distinct maximum in cloud-top cooling rate, which is used here for temporal synchronization. Cloud growth spans a period of approximately half an hour. Glaciation rate indicators suggest that freezing 15 min prior to the maximum cooling plays an important role in invigorating convective updrafts through the release of latent heat. Smaller ice particles are found for larger cloud-top cooling, which provides observational evidence that ice particles form later and have less time to grow in stronger convective updrafts. Furthermore, maximum cloud-top height, anvil expansion rate, maximum precipitation intensity, and core size are found to be positively correlated. With respect to the onset of precipitation, this analysis shows a high probability that significant precipitation already occurs 30 min prior to maximum cloud-top cooling.


2016 ◽  
Vol 24 (3) ◽  
pp. 2166-2181 ◽  
Author(s):  
Chiara Avataneo ◽  
Michel Sablier
Keyword(s):  

2009 ◽  
Vol 43 (13) ◽  
pp. 4665-4671 ◽  
Author(s):  
Ivan Kourtchev ◽  
Lucian Copolovici ◽  
Magda Claeys ◽  
Willy Maenhaut

Sign in / Sign up

Export Citation Format

Share Document