scholarly journals Syntaxonomic diversity of dry grassland and phrygana vegetation of the Southern Crimea: preliminary analysis

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.


2001 ◽  
pp. 62-70 ◽  
Author(s):  
V. Yu. Neshataev

The Code of phytosociological nomenclature of the International Association of Vegetation Science (Barkman et al., 1986) may be applied only to floristic-sociological classification of vegetation. Russian phytosociological tradition was based on the dominant aproach and used since 1900 the nomenclature proposed by R. Sernander. Though for a long time there were no formal rules in the form of the code. In 1989 the author published the Project of the All-Union Code of the Phytocoenological Nomenclature. Since that time many Russian phytosociologists applied the Code in their works. The author received many suggestions on the improvement of the Code that were taken into account in the new variant of the Code. The Code consists of principles, rules and advices. The Code is independent of the Code of the floristic-sociological classification. It regulates the names of syntaxa. Syntaxon is the type of the plant community with the determined rank. The usage of the names of the syntaxa is based on the nomenclature types (types of names) and the priority in the publication of their diagnoses and releves. The Code is retroactive to 1900. The ranks of the syntaxa of the main system (in ­ascending order) are the next: variant, subassociation, association, group of associations, class of associations, subformation, formation, group of formations, class of formations, subtype of vegetation, type of vegetation, group of types of vegetation, class of types of vegetation, subdivision, division. The main ranks are association, formation, type of vegetation, division. The ortogonal system is used mainly for the forest plant communities and based on the similarity of the moss and the grass layers. It has two ranks of syntaxa — cicle and group of cycles. The name of the formation is based on the names of one or two dominating species or on the names of dominating ecobiomorfs. The nomenclature type of the formation is the association. The names of the syntaxa that have the rank higher then formation must be made of the name of the formation that is the nomenclature type of the syntaxon. The suffixes in the names of formation and higher syntaxa are the next: formation — «-eta», group of formations — «-etesum», class of fomations — «-etosa», subtype of vegetation — «-etium», type of vegetation — «‑etion», group of types of vegetation — «-phytum», class of types of vegetation — «-phytosa», subdivision — «‑phytium», division — «-phytion». The names of associations, groups and classes of associations and subformations are binary. The first word in the name is the name of formation to which the association belonges with the suffix «-etum» for association, «‑eta» for group, class of associations and subformations. The second word is made of the names of constant or dominant one or two species or of the names of dominating ecobiomorfs with the suffix «-osum» for association and «-osa» for group of associations, «-osium» for classes of associations, «-osion» for subformation. The type of the name of the association is the published releve in which the abundance or the cover is shown for all species. The name of subassociation consists of the name of association, the word subass. and the word characterising dominant, constant species or structural, ecological, ecobiomorfological peculiarities of the suassociation The suffix of the last word is «-osum». For the suassociation containing the nomenclature type of association the name «typicum» may be used. The name of variant consists of the name of the association, the word var. and the word characterising the variant with suffix «-osum». The last word may be produced similarly as the last word in the name of subassociation. The names of cycle and group of cycles must be made of the second part of the name of the assotiation that is a type of cycle or the group of cycles. The suffix for cycle is «-osum» for the group of cycles «-osa».


2018 ◽  
Vol 7 (4) ◽  
pp. 74-80
Author(s):  
Tatyana Mikhaylovna Lysenko

The paper describes the study of steppe vegetation in the Samara Region. It contains results of the steppe communities field study conducted in 2014-2015 in the vicinity of Togliatti (Samara Region). Geobotanical relevs were made on standard sites for steppe vegetation. Projective covering of plant species in field conditions was estimated as a percentage and then converted to scores using B.M. Mirkins scale. The relevs are placed in the geobotanical database Vegetation of the Volga and Ural Basins and processed using the computer program JUICE. Bioindication studies were conducted using the IBIS program. As a result of the syntaxonomic analysis carried out using the floral approach to the classification of vegetation by J. Braun-Blanquet, 2 new associations and 6 new subassociations were identified. Their names are given in accordance with the International Code of Phytosociological Nomenclature. Their position in the system of higher syntaxons of Europe is established, nomenclature types, diagnostic types are given, composition and structure, ecology and distribution of communities are characterized as well as the results of processing according to the scales by L.G. Ramensky. The communities of all established syntaxons are recommended for inclusion in the 2nd edition of the Green Book of the Samara Region.


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.


Hacquetia ◽  
2013 ◽  
Vol 12 (2) ◽  
pp. 39-54 ◽  
Author(s):  
Svetlana Aćić ◽  
Urban Šilc ◽  
Dmitar Lakušić ◽  
Snežana Vukojičić ◽  
Zora Dajić Stevanović

Abstract A list of corrected and typified grassland communities of the class Molinio-Arrhenatheretea Tx. 1937 occurring in Serbia was provided. The nomenclature rules of the International Code of Phytosociological Nomenclature were strictly followed. Syntaxonomic affiliation of communities to higher syntaxa was assessed according to the existing syntaxonomical schemes for Serbia, i.e. according to the position determined by the original source. Higher syntaxa followed the synsystem of the so-called “EuroVegChecklist”. Since syntaxonomic disagreements concerning a certain plant association’s position within the whole classification system have not been discussed, such a list should serve as the starting point for a further revision of the status of grassland communities in Serbia. So far, a total of 87 plant communities of the class Molinio-Arrhenatheretea were described for Serbia. The list provided here will enable more precise and more accurate mapping of vegetation in Serbia, as well as classification of these communities into the Habitat Directive which will enable the establishment of the Red list of Habitats for Serbia.


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.


Koedoe ◽  
1995 ◽  
Vol 38 (1) ◽  
Author(s):  
G.J. Bredenkamp ◽  
H. Bezuidenhout

A procedure for the effective classification of large phytosociological data sets, and the combination of many data sets from various parts of the South African grasslands is demonstrated. The procedure suggests a region by region or project by project treatment of the data. The analyses are performed step by step to effectively bring together all releves of similar or related plant communities. The first step involves a separate numerical classification of each subset (region), and subsequent refinement by Braun- Blanquet procedures. The resulting plant communities are summarised in a single synoptic table, by calculating a synoptic value for each species in each community. In the second step all communities in the synoptic table are classified by numerical analysis, to bring related communities from different regions or studies together in a single cluster. After refinement of these clusters by Braun-Blanquet procedures, broad vegetation types are identified. As a third step phytosociological tables are compiled for each iden- tified broad vegetation type, and a comprehensive abstract hierarchy constructed.


2009 ◽  
Vol 13 (1) ◽  
pp. 63 ◽  
Author(s):  
Yolanda Domínguez-Castellanos ◽  
Beatriz Hernandez Meza ◽  
Angeles Mendoza D. ◽  
Gerardo Ceballos González

Resumen: Se determinó la estructura y el contenido de las madrigueras de Liomys pictus por tipo de vegetación y temporada del año, en dos selvas tropicales del Pacífico Mexicano. Se encontraron 24 madrigueras: en la selva baja la mayoría son complejas, mientras que  en la selva mediana son lineales, por consiguiente y de acuerdo a la clasificación de las madrigueras, en selva baja se presentaron madrigueras múltiples y en selva mediana madrigueras simples. De acuerdo al contenido, las de selva baja tienen en promedio una mayor cantidad de materiales en comparación a las de selva mediana. Se catalogaron un total de 248 especies de plantas de estas 50 se comparten en ambos sitios, del total de las especies se llegaron a identificar sólo 77. Las familias más representativas fueron Leguminoseae, Euphorbiaceae y Convolvulaceae. La estructura de las madrigueras no esta determinada por la temporalidad, sin embargo el contenido esta determinado con la cantidad de material almacenado aunque la producción de semillas esta definido por el patrón de fructificación que esta dado a lo largo del año.Palabras clave: Madrigueras, estructura, contenido, Liomys pictus, Jalisco, México.Abstract: We determined the structure and contents of burrows of Liomys pictus by vegetation type and season in two tropical forests of the Mexican Pacific. 24 burrows were found in the tropical dry forest and most complex, in the semi deciduous forest is linear, and therefore according to the classification of the burrows in the tropical dry forest are more numerous and simple in the semi deciduous forest. According to the content, of the tropical dry forest have on average a greater amount of material compared to the semi deciduous forest. Were categorized a total of 248 plant species of these 50 sites are shared in both the total number of species is to determine 77. The most representative families were Leguminoseae, Euphorbiaceae and Convulvolaceae. The structure of the burrows is not affected by the timing, but the content is determined with the amount of stored material but seed production is defined by the pattern of fruit that is given throughout the year.Key words: Burrows, structure, food hoarding, Liomys pictus, Jalisco, Mexico.


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