<abstract xmlns="http://www.w3.org/1999/xhtml">

The characteristics of shaded chasmophytic habitats on calcareous rocks in forest conditions are described, where the forest canopy primarily acts as a shading factor that determines microclimate, humidity and light levels. These communities can be found in deciduous forests of the <italic>Carpinion betuli</italic>, <italic>Fagion sylvaticae</italic> and <italic>Tilio-Acerion</italic> alliances, where they are confined to steep calcareous rock faces and cliffs. Syntaxonomically, these communities belong to the <italic>Polypodietea</italic> class (<italic>Ctenidio-Polypodietalia vulgaris</italic> order, <italic>Ctenidio-Polypodion vulgaris</italic> alliance) and to four informal communities: <italic>Isothecium alopecuroides-Polystichum braunii, Porella platyphylla-Asplenium ruta-muraria</italic>, <italic>Pseudanomodon attenuatus-Chrysosplenium alternifolium</italic> and <italic>Pedinophyllum interruptum-Polystichum aculeatum</italic>. We evaluated indices of environmental parameters according to the synphytoindication method using Didukh’s scales. An assessment of the threat impacts and indicators of sociological significance shows that the habitat belongs to a rare type (II class), and therefore requires specific conservation measures.
</abstract>

Yuriy Fedkovych Chernivtsi National University

Vasyl’ Stus Donetsk National University

Taras Shevchenko Kyiv National University

Rare shady chasmophytic habitat communities (8210) in Ukraine

<abstract xmlns="http://www.w3.org/1999/xhtml">

Using vegetation as a bioindicator in urban and degraded areas is an effective way to assess the status of the environment. In this work, we present the results of a phytosociological investigation of a suburban river and of its surroundings in southern Tuscany (Bestina river and its tributary Bestinino in Asciano, Province of Siena). By means of 94 phytosociological relevés, we identified 34 plant communities belonging to the 17 classes. Six habitats included in the 92/43/EEC Directive, plus two habitats recently proposed for inclusion, were identified, as well as one habitat of regional interest. The study revealed that, despite the high levels of human disturbance, aquatic and herbaceous riparian vegetation is still well-preserved, though mostly represented by stress-tolerant communities. On the contrary, most of the vegetation types not being directly linked to the river dynamic are in poor conservation status. Despite this, some habitats of community interest were detected even in non-riverine sites. Our work provides the basic knowledge for future restoration of the Bestina river and of its surroundings, wished by the Tuscany Region.
</abstract>

Vegetation and Annex I habitats of a suburban river in southern Tuscany (central Italy): remnants of plant diversity or need for restoration?

<abstract xmlns="http://www.w3.org/1999/xhtml">

The plant communities dominated by <italic>Asphodelus ramosus</italic> are quite common in the Mediterranean Basin, especially in the most degraded vegetation stages caused by grazing and fires. The aim of this paper is to provide a phytosociological description of the <italic>Asphodelus ramosus</italic>-dominated plant community of the Murge Plateau, in southeastern Italy, through 28 phytosociological relevés. Cluster analysis (flexible Beta method) and ordination (non-metric multidimentional scaling) were used to compare this plant community with other dry grassland associations in the same area and with other <italic>Asphodelus ramosus</italic>-dominated plant communities from Italy and western Balkans. The results allowed the description of a new association for the Murge Plateau: the <italic>Gelasio columnae-Asphodeletum ramosi</italic>.
The new association has been tentatively classified in the alliance <italic>Hippocrepido glaucae-Stipion austroitalicae</italic> (<italic>Scorzoneretalia villosae</italic> order), because of the presence of several species typical of this alliance, although it is intermediate between this alliance and the more thermophilous vegetation of the <italic>Lygeo sparti-Stipetea tenacissimae</italic> class.
</abstract>

A new <italic>Asphodelus ramosus</italic>-dominated association from the Murge Plateau (SE Italy)

<abstract xmlns="http://www.w3.org/1999/xhtml">

Communities with constant presence of two insular endemic species of genus <italic>Brassica</italic> (<italic>B. cazzae</italic> Ginzb. et Teyber, <italic>B. mollis</italic> Vis.) were studied on the small southeastern Adriatic islands and islets (South Croatia), following the Braun-Blanquet approach. From a total of 51 phytosociological relevés, mostly collected in the period from 2020 and 2022, eight associations and three subassociations belonging to seven alliances and six classes were identified. <italic>Brassica cazzae</italic> and <italic>B. mollis</italic> occur in a variety of habitat types (i) in bare or very shallow soils on which halophilous and halotolerant communities of the <italic>Limonion anfracti-cancellati</italic> and <italic>Anthyllidion barbae-jovis</italic> mostly thrive, (ii) on rocky crevices and cliffs with rupicolous chasmophytic vegetation of the <italic>Centaureo cuspidatae-Portenschlagiellion ramosissimae</italic>, (iii) within woody vegetation of the <italic>Pistacio lentisci-Pinion halepensis</italic>, maquis of the <italic>Oleo-Ceratonion siliquae</italic> and garrigues of the <italic>Cisto cretici-Ericion manipuliflorae</italic>, and (iv) grasslands of the <italic>Chrysopogono grylli-Koelerion splendentis</italic>. Two associations (<italic>Plantagino holostei-Limonietum cazzae</italic>, <italic>Brassico mollis-Anthyllidetum barbae-jovis</italic>) and one subassociation (<italic>Centaureetum ragusinae limonietosum cazzae</italic>) are described for the first time.
</abstract>

University of Zagreb, Faculty of Science, Botanical Garden

Contribution to the syntaxonomy of plant communities with insular endemic species of genus <italic>Brassica</italic> (southern Croatia)

<abstract xmlns="http://www.w3.org/1999/xhtml">

Identification and characterization of forest habitats on the territory of the “Central Balkan” National Park in Bulgaria was carried out. The national park is one of the most valuable and largest protected areas in Europe – second category according to the International Union for Conservation of Nature (IUCN). Based on 786 phytosociological relevés, a total of 17 different habitat types, according to EUNIS were identified and mapped. The habitats were ecologically characterized by Ellenberg indicator values and their area was determined. A comparison was made with the areas determined in previous works. The applied method is suitable for the purposes of managing protected territories and zones, for monitoring the status and especially the conservation status of the habitats. The results and especially the established new habitats support this point of view.
</abstract>

Forest habitats on the territory of the National Park “Central Balkan” Bulgaria

<abstract xmlns="http://www.w3.org/1999/xhtml">

<italic>Epipactis palustris</italic> (L.) Crantz is a protected species in Ukraine. In order to organize optimal protection measures comprehensive studies of various aspects of its biology are necessary. The aim of this study was to determine the pollinators and visitors of <italic>E. palustris.</italic> The study was conducted in Kyiv city (Ukraine) between 2020 and 2022. The research focused on arthropod visitors in two human-made populations. Specimens of 31 families and 48 genera from 9 arthropod orders were identified and established. The greatest number of species represented <italic>Hymenoptera, Coleoptera</italic> and <italic>Diptera</italic>. Evaluation of visitor activity show that <italic>Hymenoptera</italic> were the most frequent visitors. <italic>E. palustris</italic> in the conditions of Kyiv is mainly characterized by entomophily. <italic>Halictidae</italic>, <italic>Apidae</italic> and <italic>Coccinellidae</italic> played an important role in <italic>E. palustris</italic> pollination. It was found that populations of <italic>E. palustris</italic> in the conditions of the Kyiv city form a unique self-regulating biocenosis that provides shelter and food for 53 identified species of arthropods.
</abstract>

National University of Life and Environmental Sciences of Ukraine

Diversity of <italic>Epipactis palustris</italic> (L.) Crantz (<italic>Orchidaceae</italic>) pollinators and visitors in conditions of Kyiv city (Ukraine)

<abstract xmlns="http://www.w3.org/1999/xhtml">

During field surveys, carried out between 2021 and 2022 in northeastern Algeria, two populations of <italic>Tipuana tipu</italic> (Benth.) Kuntze were discovered. One population was located in the middle of a quite natural habitat in the Filfilla region (wilaya of Skikda). This population seems more or less established and can be considered to be at the beginning of the naturalization process, a degree of naturalization not previously reported in Algeria and mainland North Africa. The surveys also revealed several populations of <italic>Paraserianthes lophantha</italic> (Vent.) I.C. Nielsen, a species that was recently reported as naturalized in Algeria but for which details on its naturalization were lacking. Details about the localities in which the two species were observed are given, including a present map of their distribution and field photographs. A key for the identification of both genera is also provided.
</abstract>

Department of Nature and Life Sciences, Faculty of Sciences

Additional records on the occurrence of two alien Leguminosae in Algeria

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Hacquetia

 Hacquetia is a science journal bearing on Taxonomy, Floristics, Faunistic, Vegetation ecology, Biocoenology and Palynology. with a geographical focus on Southeastern Europe, although more general topics from all over the world are also invited. Why subscribe and read   Publication of quality research papers   Why submit   Fast, fair and constructive peer review (two or three competent reviewers),  Language corrections for non-native speakers,  Promotion of published works.   Archiving  Sciendo archives the contents of this journal in Portico - digital long-term preservation service of scholarly books, journals and collections.  Plagiarism Policy  The editorial board is participating in a growing community of Similarity Check System's users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process. 

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Volume 22 (2023): Issue 2 (December 2023)

Rare shady chasmophytic habitat communities (8210) in Ukraine

Vegetation and Annex I habitats of a suburban river in southern Tuscany (central Italy): remnants of plant diversity or need for restoration?

A new Asphodelus ramosus-dominated association from the Murge Plateau (SE Italy)

Contribution to the syntaxonomy of plant communities with insular endemic species of genus Brassica (southern Croatia)

Forest habitats on the territory of the National Park “Central Balkan” Bulgaria

Diversity of Epipactis palustris (L.) Crantz (Orchidaceae) pollinators and visitors in conditions of Kyiv city (Ukraine)

Additional records on the occurrence of two alien Leguminosae in Algeria

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