﻿Proposal (31) to conserve the name Brachypodietalia pinnati Korneck 1974 as a nomen conservandum with a conserved type

Dengler, Jürgen; Willner, Wolfgang

doi:10.3897/vcs.100985

Cited by 3 publications

(1 citation statement)

References 23 publications

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“…The two alliances separated match the concepts of Pedashenko et al (2013), Aćić et al (2015), Mucina et al (2016) order Scorzoneretalia villosae; Willner et al, 2017, Dengler & Willner, 2023, within the order Brachypodietalia pinnati), we tested whether this alliance might be the better 'home' for the Central and Eastern Balkan 'Cirsio-Brachypodion' stands than the Central European Cirsio-Brachypodion s.str. As expected from the geographic location, our stands were intermediate transitional between both units, but overall, we found the arguments for inclusion into the Cirsio-Brachypodion more convincing (Appendix S29).…”

Section: Brachypodietalia Pinnatimentioning

confidence: 99%

Classification of the high‐rank syntaxa of the Central and Eastern Balkan dry grasslands with a new hierarchical expert system approach

Vassilev,

Bergmeier,

Boch

et al. 2024

Applied Vegetation Science

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AimsDeveloping a hierarchical classification system for classes, orders and alliances of the diverse dry grasslands of the Central and Eastern Balkan Peninsula and translating this into an electronic expert system (ES) for the automatic assignment of plots.LocationSerbia, Kosovo, North Macedonia, Bulgaria and northern Greece.MethodsWe extracted 5734 plots from the Balkan Dry Grassland Database corresponding to eight classes of dry grasslands reported from the region, using the EuroVegChecklist ES. This data set and later the plots within each derived subunit were subjected to a new numerical approach: starting with an initial partitioning (expert‐interpreted TWINSPAN classification), diagnostic species were determined based on their phi‐values for the target vegetation type and the differences in phi‐values to the next similar types. These diagnostic species were fed into an ES to create a new partitioning, a procedure which was iterated until diagnostic species and species of the ES converged. Then the same approach was applied within each of the derived units to define the units of the next‐lower level.ResultsThe iterative cluster optimisation (ICO) converged in all cases. The resulting hierarchical expert system (HES) classified 95% of all plots to alliances. We distinguished four classes with eight orders and 12 alliances: (1) Tuberarietea guttatae (Romuleion); (2) Stipo‐Brachypodietea distachyi (Clinopodio alpini‐Thymion striati); (3) Festuco‐Brometea with Brachypodietalia pinnati (Chrysopogono‐Danthonion calycinae and Cirsio‐Brachypodion pinnati), Festucetalia valesiacae (Festucion valesiacae), an unnamed order of rocky steppes (with Pimpinello‐Thymion zygioidis) and Koelerietalia splendentis (Centaureo‐Bromion fibrosi, Saturejion montanae and Diantho haematocalycis‐Festucion hirtovaginatae); (four) Koelerio‐Corynephoretea with Sedo acris‐Festucetalia (Festucion vaginatae) and Trifolio arvensis‐Festucetalia ovinae (Armerio rumelicae‐Potentillion and Minuartio montanae‐Poion molinerii all. nov.).ConclusionsWe created a unified hierarchical classification with an electronic ES using diagnostic species defined by phi‐values. Our new approach (ICO‐HES: iterative cluster optimisation for hierarchical expert systems) allows dividing large data sets into meaningful units at several hierarchical levels, and thus has high potential for complex classifications. Importantly, it overcomes the divide between ES species and diagnostic species and re‐unites them into one concept.

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Section: Brachypodietalia Pinnatimentioning

confidence: 99%

Classification of the high‐rank syntaxa of the Central and Eastern Balkan dry grasslands with a new hierarchical expert system approach

Vassilev,

Bergmeier,

Boch

et al. 2024

Applied Vegetation Science

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Dry grasslands and thorn-cushion communities of Armenia: a first syntaxonomic classification

Vynokurov,

Aleksanyan,

Becker

et al. 2024

VCS

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Aim: To provide the first syntaxonomic, plot-based classification of the dry grasslands and thorn-cushion communities in Armenia. Study area: Armenia. Methods: We sampled 111 vegetation plots (10 m2) and recorded environmental and structural parameters. We collected additional 487 relevés from surrounding countries for a broad-scale comparison. We used modified TWINSPAN to derive a syntaxonomic classification system, whose units were then compared among each other regarding species composition, structure, site conditions and distribution. Results: The classification of Armenian vegetation plots resulted in a 12-cluster solution. Unsupervised classification of the broad-scale dataset yielded five main groups, which were used for the high-level syntaxonomic assignments of the Armenian data. We assigned about half of the plots of the Armenian dataset to the Festuco-Brometea, while the remaining represented a potential new class, preliminarily called “Ziziphora tenuior-Stipa arabica grasslands”. Most of the syntaxa below class level are new to science, therefore we provide formal descriptions of three orders (Plantagini atratae-Bromopsietalia variegatae, Onobrychido transcaucasicae-Stipetalia pulcherrimae, Cousinio brachypterae-Stipetalia arabicae), four alliances (Acantholimono caryophyllacei-Stipion holosericeae, Artemision fragrantis, Onobrychido michauxii-Stipion capillatae, Onobrychido transcaucasicae-Stipion pulcherrimae) and six associations. We found significant differences in the topographic, climatic and soil characteristics, and structural parameters, species life forms and distribution range types between the grassland types at different syntaxonomic levels. The mean species richness was 47.3 (vascular plants: 46.8, bryophytes: 0.4, lichens: 0.1). Conclusions: We found remarkable differences of the Armenian dry grasslands from the previously known units and described most of the higher syntaxa and all the associations as new to science. Our study provides arguments for a potential new class of Ziziphora tenuior-Stipa arabica grasslands separate both from the Euro-Siberian Festuco-Brometea and the Anatolian Astragalo-Brometea. Finally, we found plot scale richness of vascular plants clearly above the Palaearctic average of dry grasslands and that of non-vascular plants clearly below, which calls for further biodiversity analyses. Taxonomic reference: Euro+Med (2023) for vascular plants, Hodgetts et al. (2020) for bryophytes, Nimis et al. (2018) for lichens except for Xanthoparmelia camtschadalis (Ach.) Hale. Abbreviations: EDGG = Eurasian Dry Grassland Group; DCA = detrended correspondence analysis; ICPN = International Code of Phytosociological Nomenclature (Theurillat et al. 2021); TWINSPAN = two-way indicator species analysis.

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Proposal (39) to conserve the name Koelerietalia splendentis Horvatić 1973 as a nomen conservandum

Dengler,

Vassilev,

Bergmeier

2024

VCS

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After a nomenclatural revision of the available names for the order of rocky grasslands of the Balkan Peninsula within the class Festuco-Brometea, based on Article 52 ICPN we propose the conservation of the name Koelerietalia splendentis against the name Halacsyetalia sendtneri. In syntaxonomic concepts not combining the limestone and serpentine rocky grasslands of the Balkans in a single order, the latter name would still be available as it is based on a different nomenclatural type. (39) Koelerietalia splendentisHorvatić 1973 nom. cons. propos. Typus: Chrysopogono grylli-Koelerion splendentisHorvatić 1973 (holotypus) (=) Halacsyetalia sendtneriRitter-Studnička 1970 Typus: Potentillion visianiiRitter-Studnička 1970 (lectotypus: Kuzmanović et al. 2016) Taxonomic reference: Mucina et al. (2016). Abbreviations: ICPN = International Code of Phytosociological Nomenclature, 4th edition (Theurillat et al. 2021).

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Proposal (31) to conserve the name Brachypodietalia pinnati Korneck 1974 as a nomen conservandum with a conserved type

Cited by 3 publications

References 23 publications

Classification of the high‐rank syntaxa of the Central and Eastern Balkan dry grasslands with a new hierarchical expert system approach

Classification of the high‐rank syntaxa of the Central and Eastern Balkan dry grasslands with a new hierarchical expert system approach

Dry grasslands and thorn-cushion communities of Armenia: a first syntaxonomic classification

Proposal (39) to conserve the name Koelerietalia splendentis Horvatić 1973 as a nomen conservandum

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﻿Proposal (31) to conserve the name Brachypodietalia pinnati Korneck 1974 as a nomen conservandum with a conserved type

Cited by 3 publications

References 23 publications

Classification of the high‐rank syntaxa of the Central and Eastern Balkan dry grasslands with a new hierarchical expert system approach

Classification of the high‐rank syntaxa of the Central and Eastern Balkan dry grasslands with a new hierarchical expert system approach

Dry grasslands and thorn-cushion communities of Armenia: a first syntaxonomic classification

Proposal (39) to conserve the name Koelerietalia splendentis Horvatić 1973 as a nomen conservandum

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Proposal (31) to conserve the name Brachypodietalia pinnati Korneck 1974 as a nomen conservandum with a conserved type