rss_2.0Hacquetia FeedSciendo RSS Feed for Hacquetia 's Cover and ecology of wild lettuces L. and L. in central Chile<abstract><title style='display:none'>Abstract</title><p>Wild lettuces (<italic>Lactuca</italic> L.) provide valuable genetic resources for crop breeding, but are also significant invasive weeds. We explored the distributions, habitats, and ecological characteristics of populations of wild <italic>Lactuca</italic> species in central Chile. We documented two species – <italic>Lactuca serriola</italic> L. (prickly lettuce) and <italic>Lactuca virosa</italic> L. (opium/bitter lettuce) in 204 localities. These observations indicate that: i) both allochthonous (Euroasian) <italic>Lactuca</italic> species occur and are able to regenerate in central Chile; ii) <italic>L. serriola</italic> forms dense populations in urbanized areas; iii) both species can expand along transport corridors to high elevations; iv) the spread of <italic>L. virosa</italic> and persistence of dense populations in elevations above 2,000 m a.s.l. prove the invasiveness of this species in extreme climates; v) both species may contain novel traits of interest for germplasm conservation.</p></abstract>ARTICLE2022-02-12T00:00:00.000+00:00Relationships between vegetation of Macedonian pine ( Griseb.) and different types of soils on which it develops<abstract><title style='display:none'>Abstract</title><p>This paper deals with relationships between vegetation of Macedonian pine (<italic>Pinus peuce</italic>) and soils developed on different parent materials on the territory of North Macedonia. We analysed the floristic composition at localities on limestone, on scree of dolomite marble and on scree of silicate. On limestone and scree of dolomite marble, rendzinas on hard limestone and dolomite have developed, and on silicate parent material brown forest soils. The vegetation was sampled according to the Braun-Blanquet approach. DCA and indicator values were used for ecological interpretation of the vegetation patterns. The mechanical and chemical properties of soil and textural classes were also processed. An evident increased presence of carbonates in the soil of scree of dolomite marble on Nidže Mountain was observed, unlike that on Shar Mountain which has formed on typical limestone. Although it is a forest community dominated by the same species, differences between the massifs, the precipitation regime, geology, differences in soil properties in relation to the appearance of carbonates and pH values, and other factors, result in differences in their floristic composition and are the reason for the distinction between the two groups. On silicate on Nidže Mountain, Macedonian pine forests have also developed on brown forest soils, with a different floristic composition to that of the other group on carbonate (dolomite and limestone).</p></abstract>ARTICLE2022-02-12T00:00:00.000+00:00Comparison of the differences in the composition of ruderal flora between conventional tram tracks and managed green tram tracks in the urban ecosystem of the city of Bratislava<abstract><title style='display:none'>Abstract</title><p>Green infrastructure (GI) brings many benefits to urban ecosystems. Green tram tracks can be considered to be a part of GI. The presented study is focused on the comparison of the species’ frequency and composition between conventional tram tracks and green tram tracks in Bratislava, Slovakia, Central Europe. This comparison also provides an insight into the changes of the flora of tram tracks over time, as we compare the results of the older research with recent research on green tram tracks. The results revealed significant differences in the composition of flora between conventional tram tracks and green tram tracks. In particular, the total number of species has decreased over time, as green tram tracks host fewer spontaneously growing taxa than conventional ones. The frequency of occurrence of archaeophytes and neophytes has decreased on the strict rail yard while on the tracksides it has increased. Green tram tracks deliver positive features to ecosystems, but may also have negative aspects because they present a pool of alien, potentially invasive plants.</p></abstract>ARTICLE2022-02-12T00:00:00.000+00:00Conservation Assessment of a critically endangered endemic Polygonum samsunicum (Polygonaceae) with emended description from Turkey<abstract><title style='display:none'>Abstract</title><p><italic>Polygonum samsunicum</italic> is one of the endemic species from Turkey. Up to now, it has been only known from the type locality (Samsun /Ladik). This research intends to define the global conservation status and strategies of locally distributed endemic <italic>P. samsunicum</italic> which has been confronted with the danger of extinction due to anthropogenic effects in recent years. In this research, we did extensive field studies and collected all needed data for determining the precise conservation status of <italic>P. samsunicum</italic>. We reported nine additional populations from Upper Tersakan valley, where the Mediterranean climate is dominant, and the size of populations, altitude, coordinates, habitat types, and the threats it faces in each locality were given. GeoCAT analyses at global levels indicate the grade of occurrence 21.609 km2 and area of occupancy 10.094 km2 and there could be an inferred decline due to habitat loss and fragmentation of the original population, suggesting local endemic species might be classified as CR, based on criteria B1ab (i, ii, iii) + 2ab (i, ii, iii) in the Red List categorization. Its parts are also consumed by local people due to its medicinal features. For in-situ conservation, phenological life history and detailed ecological studies, as well as population monitoring and ex-situ conservation studies should be continued together. Establishing cooperation between universities, research institutes, and local management authorities is strongly needed for long-term monitoring of population size, distribution, overgrazing, and public awareness.</p></abstract>ARTICLE2022-02-12T00:00:00.000+00:00Phytosociology and taxonomic notes on some endemic-rich associations of the Naples Gulf<abstract><title style='display:none'>Abstract</title><p>The Gulf of Naples is an important centre of endemism, well known from the floristic point of view, but much less from the phytosociological one. In this paper we investigated the non-forest vegetation focusing on communities rich in endemics. We described two communities as new: <italic>Eryngio amethystini-Santolinetum neapolitanae</italic> for the garrigues on limestone, <italic>Globulario neapolitanae-Loniceretum stabianae</italic> for the vegetation on dolomitic rocks, both from the Lattari mountains, and we extend the area of <italic>Crithmo maritimi-Limonietum cumani</italic> for the vegetation on volcanic rocks and rarely on limestones along the coast, which was known for a few localities. The syntaxonomical position and the phytogeographical context of these communities are discussed. A few taxonomic notes are added on rare or interesting species retrieved in the course of the enquiry.</p></abstract>ARTICLE2022-02-12T00:00:00.000+00:00 × Trabut (Fagaceae, Quercoideae) and Laribi ex El Mokni ass. nov. new taxon and syntaxon to Kroumirian oak forests of Tunisia with remarks on their ecology and conservation<abstract><title style='display:none'>Abstract</title><p>The very little-known <italic>Quercus</italic> ×<italic>numidica</italic> Trabut, recently typified and synonymised to <italic>Q.</italic> ×<italic>kabylica</italic> Trabut, was found within the <italic>Cynosuro peltierii-Quercetum afaredis</italic> Laribi ex El Mokni ass. nov. (<italic>Quercion suberis</italic> Loisel 1971). Both the taxon and the syntaxon are described here for the first time for the oak forests of Kroumiria in Tunisia. The distribution, ecology and field photographs of the new taxon are presented and IUCN Red List assessment is provided in this paper. Threats at the national level are assessed and conservation measures for the taxon are proposed.</p></abstract>ARTICLE2022-02-12T00:00:00.000+00:00Natural calcareous Norway spruce woodlands in Slovakia and their syntaxonomical classification<abstract><title style='display:none'>Abstract</title><p>A second version of the syntaxonomical classification of calcareous Norway spruce communities is presented for the region of Slovak Western Carpathians. Recent knowledge on delimitation of natural Norway spruce woodlands in Slovakia is summarized as well. As result, four in Slovakia traditionally recognized associations are distinguished: <italic>Seslerio caeruleae-Piceetum</italic> on the ecologically most extreme habitats, followed by <italic>Cirsio erisithalis-Piceetum</italic> (a replacement for pseudonymically used <italic>Cortuso matthioli-Piceetum</italic>), tall-forb community of <italic>Adenostylo alliariae-Piceetum</italic> and ca. species-poor low-forb community of <italic>Mnio spinosi-Piceetum</italic> (syn. <italic>Oxalido-Piceetum</italic>). Additionally, two new associations are differentiated: <italic>Fragario vescae-Piceetum</italic> ass. prov. standing between <italic>Cirsio-Piceetum</italic> and <italic>Adenostylo-Piceetum</italic> and acidified <italic>Hieracio murorum-Piceetum</italic> on deeper soils developed over rocks of the Mráznica formation. For nomenclatural reasons, new order <italic>Cortuso-Piceetalia</italic> is described for species-rich calcicolous communities of the class <italic>Vaccinio-Piceetea</italic> as well as subordinated new alliance <italic>Cortuso matthioli-Piceion</italic> for the supramontane calcicolous Norway spruce communities.</p></abstract>ARTICLE2022-02-12T00:00:00.000+00:00Contribution to the knowledge of the non-calcareous grasslands of the Monti Sibillini National Park (central Italy): coenological structure, syntaxonomy, ecology, and floristic aspects<abstract><title style='display:none'>Abstract</title><p>This study provides the first contribution to the knowledge of the non-calcareous grasslands of the arenaceous sector of the Monti Sibillini National Park (central Italy). We conducted 55 relevés using the Braun-Blanquet phytosociological method and analysed the ecology of plant communities by Redundancy analysis using topographic variables and Ellenberg Indicator Values as predictors. We identified nine plant communities, belonging to four classes. Communities of <italic>Calluno-Ulicetea</italic> and <italic>Nardetea strictae</italic> were found on acidic soils at higher elevations, those of <italic>Festuco-Brometea</italic> were mainly associated with steeper south-facing slopes, while <italic>Molinio-Arrhenatheretea</italic> communities were associated with low altitudes and gentle slopes, semi-flat lands, and high soil nutrient and moisture values. We recorded a total of 410 taxa at the species and subspecies level, representing about 20% of the flora of the Monti Sibillini National Park. Some of these are of high conservation interest, e.g. <italic>Calluna vulgaris</italic>, <italic>Genista sagittalis</italic>, <italic>Juncus capitatus</italic>, and <italic>Ophioglossum vulgatum</italic>. Eight species are new to the flora of Sibillini National Park.</p></abstract>ARTICLE2022-02-12T00:00:00.000+00:00Features of development of species of the genus L. in the conditions of steppe zone of Ukraine<abstract><title style='display:none'>Abstract</title><p>The paper deals with peculiar features of development of the species <italic>Veronica</italic> L. in the conditions of the steppe zone of Ukraine (central part of the country). Under the action of climatic changes occurring for the last 20 years, the species began to grow 6–14 days earlier and increased the vegetation period by 15–25 days. Under the effect of extreme growing conditions (hot weather and drought) decrease in the area of the leaf blade by almost 2 times was recorded in <italic>V. prostrata</italic> and <italic>V. incana</italic>. Length and width of the leaf in <italic>V. prostrata</italic> and <italic>V. incana</italic> decreased by 20–30%, but in <italic>V. austriaca</italic> ssp. <italic>teucrium</italic> a decrease was observed for the leaf width only while its length increased by 17%. Analysis of correlation of climatic factors (air temperature, precipitation amount) to the morphometric parameters of the leaf during seasonal development showed greater dependence of their value on the air temperature, which was confirmed by the inverse correlation coefficients (r = -0.55–-0.66). In the unfavorable growing conditions, the features of formation of the underground part of species are manifested in the inhibited development of underground shoots (by 80–85%) and stimulation of branching and increase in the length of thin sucking roots (1.5 times). Studied species of the genus <italic>Veronica</italic> in the climatic conditions of the steppe zone of Ukraine go through all stages of phenological development and are marked by rather wide range of phenotypic changes in the vegetative sphere.</p></abstract>ARTICLE2022-02-12T00:00:00.000+00:00On the occurrence and naturalization of (Amaranthaceae) in some European countries, with notes on its climatic features<abstract><title style='display:none'>Abstract</title><p>The occurrence and invasion status of <italic>Amaranthus hypochondriacus</italic> in Belarus, Estonia, Italy, the Netherlands, and the North Caucasus were discussed. For Italy, we change the status from casual to naturalized based on living populations which are able to sustain themselves for 5 and over 20 years. Concerning the other countries, we clarified the invasion status of the species (inconsistently reported in literature) indicating it as a casual alien in Belarus, Estonia, and the North Caucasus and naturalized in the Netherlands. Climatic data of the European stations in which <italic>Amaranthus hypochondriacus</italic> was found were compared with those referring to the native distribution area (Mexico and southeastern regions of the US). The occurrence of the species in Europe appears to be facilitated by the temperate climate (Dutch and Italian localities), which also characterizes the native distribution area (N-America). The occurrence of the species in Estonia, the Netherlands, and the North Caucasus is interesting. In fact, although the types of climates (“Cold, Dfb” and “Temperate, Cfb”) occur in America (northeastern US and central Mexico), there are some differences in precipitation and temperature values, i.e. lower mean precipitation [644.1 mm (Estonia) <italic>vs</italic>. 1119 mm (N-America); climate Dfb] and lower mean temperature [9.7–11.1 °C (Netherlands and North Caucasus) <italic>vs</italic>. 15.3 °C (Mexico); climate Cfb].</p></abstract>ARTICLE2022-02-12T00:00:00.000+00:00Dry grasslands on fluvial terraces of the middle reaches of river Piave in the North East Italy<abstract><title style='display:none'>Abstract</title><p>Dry grassland vegetation on fluvial terraces along middle reaches of river Piave and river Brenta in Northeastern high Po plain were investigated through a phytosociological approach. Comparisons with ecologically analogous communities described from neighbouring territories lead to the description of a new association belonging to <italic>Centaureion dichroanthae</italic> alliance: <italic>Astragalo onobrychidis-Koelerietum pyramidatae</italic>. Residual fragments of <italic>Chrysopogon gryllus-</italic>dominated grassland on slighly deeper soils are refered to <italic>Chamaecytiso hirsuti-Chrysopogonetum grylli</italic>.</p></abstract>ARTICLE2022-02-12T00:00:00.000+00:00A new species for the vascular flora of Algeria: (Cyperaceae)<abstract><title style='display:none'>Abstract</title><p>This study provides a definition and description of <italic>Cyperus eragrostis</italic> as a new alien species to Algeria and North African flora. This hemicryptophyte, native to the tropical parts of South America, is recorded for the first time in Jijel eco-complex wetlands in North-East Algeria. Applying the standard phytosociological method we studied the stands in which this alien species grows together with other hygrophilous and ruderal species. The present study improves the knowledge of the Algerian flora and completes the information about the distribution of <italic>C. eragrostis</italic> reported by the available international literature and public herbaria.</p></abstract>ARTICLE2022-02-12T00:00:00.000+00:00Two new mesophilous oriental hornbeam communities from the northern Dinaric Alps (Bosnia and Herzegovina)<abstract><title style='display:none'>Abstract</title><p>The paper describes two new mesophilous communities of oriental hornbeam (<italic>Carpinus orientalis</italic>) coppice from the northern Dinaric Alps in Bosnia and Herzegovina (B&amp;H). While oriental hornbeam is mainly considered to be a part of thermophilous forests and scrub, numerical analysis of 103 relevés of <italic>C. orientalis</italic> dominated coppice from B&amp;H has shown that two new, rather mesophilous, communities thrive on calcareous bedrock of NW B&amp;H. They represent secondary successional stages of mesotermic forest vegetation in this region. Association <italic>Epimedio alpini-Carpinetum orientalis</italic> ass. nova hoc loco is related to Illyrian oak-hornbeam forests of <italic>Erythronio-Carpinion betuli</italic>, while <italic>Asplenio scolopendrii-Carpinetum orientalis</italic> ass. nova hoc loco is linked to Balkan submediterranean ravine forests of <italic>Ostryo-Tilion</italic>. Although these two associations were recorded only in the NW B&amp;H, their distribution is potentially larger, as their source communities are relatively common throughout the Dinaric Alps, so the information about their distribution, vertical structure, and syndynamic relations could be very useful in a national scale forest management and nature conservation.</p></abstract>ARTICLE2020-06-25T00:00:00.000+00:00Genetic and morphological variability in medicinal plant Boiss. (Asteraceae) in Iran<abstract><title style='display:none'>Abstract</title><p><italic>Helichrysum oocephalum</italic> is a medicinal plant of the genus <italic>Helichrysum</italic> that have limited distribution in Iran. Local geographical populations may differ in their genetic content and form different gene pools. Therefore, we carried out population genetic investigation and morphological studies in five geographical populations of <italic>Helichrysum oocephalum</italic> by using ISSR molecular markers. AMOVA produced the significant genetic differences. The mean Nm value revealed some degree of gene flow among <italic>Helichrysum oocephalum 8</italic>. Molecular and morphological analysis indicated that we have 2 groups in the studied populations. The present findings may be of use in the conservation of this medicinal plant in Iran.</p></abstract>ARTICLE2020-06-25T00:00:00.000+00:00Conservation assessment and action on (Fabaceae), a critically endangered endemic species to Turkey<abstract><title style='display:none'>Abstract</title><p><italic>Lotus sanguineus</italic> is one of the endemic taxa from Mediterranean Region of Turkey. It has hitherto been known from type locality and was assessed under VU and EN categories despite the lack of information on the population size, number of location and habitat quality. This study aims to determine the global conservation status and conservation strategies of the narrow endemic species. We collected all available data and evaluated them with the field studies. We reported the sizes of populations, altitude, coordinates, habitat types and the threats it faces for each locality. GeoCAT analyses at global levels indicate the extent of occurrence 19.965 km<sup>2</sup> and area of occupancy 9 km<sup>2</sup> and there could be an inferred decline due to habitat loss and fragmentation of the original population, suggesting this species might be classified as Critically Endangered, based on criterium B1ab (i, ii, iii) + 2ab (i, ii, iii) in the Red List categorization. Conservation priorities include life history and ecology studies, in-situ conservation, population monitoring and ex-situ conservation to prevent the destruction of the existing gene pool.</p></abstract>ARTICLE2020-06-25T00:00:00.000+00:00Forest vegetation diversity of the Slivenska Mountain (Eastern Stara planina, Bulgaria)<abstract><title style='display:none'>Abstract</title><p>This study deals with the diversity of forest vegetation in the Slivenska Mountain (Eastern Stara planina) and presents a contemporary classification scheme for the identified syntaxa. A total of 137 relevés were collected and analyzed using specialized software (JUICE 7.0 and PC-ORD Version 4). As a result, forest vegetation is classified into 10 associations, 3 subassociations, 4 variants and 5 communities They belong to 7 alliances, 5 orders and 3 classes: <italic>Carpino-Fagetea sylvatica</italic>e, <italic>Quercetea pubescentis</italic> and <italic>Alno glutinosae-Populetea albae</italic>. The recorded 18 distinguished vegetation groups show a relatively high diversity of forest plant communities of the study area.</p></abstract>ARTICLE2020-06-25T00:00:00.000+00:00Identifying habitat use of , and in Albanian forests using occupancy modelling<abstract><title style='display:none'>Abstract</title><p>Forests are the principal terrestrial ecosystem for protected and endangered large carnivores, providing the main habitat for species maintenance and survival. Changes in forest cover influence species distribution. The aim was (1) to test hypotheses on the natural environmental (abiotic) and biological (biotic) factors and human disturbances that determine the colonization and local extinction of three large carnivore species in relation to forest cover, (2) to infer the biotic interactions between these three large carnivore species occupying the same forested areas in Albania. Colonization is estimated to be positively affected by forest cover for brown bear, Balkan lynx and grey wolf. Brown bear and grey wolf tend to compete for the same forested areas. Local extinction increased with decreasing forest cover for brown bear and increased with decreasing mixed broadleaved forests for Balkan lynx. Anthropological variables (proximity to villages and to neighbourhood roads) increased local extinction for brown bear, grey wolf and Balkan lynx. Further studies are recommended for better understanding biotic interactions of large carnivore species in forest habitats in Albania and its neighbouring countries, which could contribute to conservation of large carnivore species on a large scale.</p></abstract>ARTICLE2020-06-25T00:00:00.000+00:00 L. (Amaryllidaceae, Amaryllidoideae), first record as naturalized geophyte in Tunisia and continental North Africa<abstract><title style='display:none'>Abstract</title><p><italic>Amaryllis belladonna</italic> L. is recorded for the first time as a naturalized non-native geophyte new to Tunisian and continental North African flora. Additional information on its current distribution and habitat, a brief morphological description, as well as some taxonomic notes, are provided.</p></abstract>ARTICLE2020-06-25T00:00:00.000+00:00Plant communities of moist rock crevices with endemic in the (sub)montane belt of western Slovenia<abstract><title style='display:none'>Abstract</title><p>Based on our analysis of a large number of relevés of communities of moist rock crevices in western Slovenia (southern Julian Alps, northern part of the Trnovski Gozd Plateau) we described several new syntaxa with the endemic <italic>Primula carniolica</italic>. The most unique in terms of ecology is a hygrophytic chasmophytic community classified into the association <italic>Astrantio carniolicae-Primuletum carniolicae</italic>, which is, together with similar hygrophytic associations <italic>Astrantio carniolicae-Pinguiculetum alpinae</italic> and <italic>Campanulo cespitosae-Saxifragetum aizoidis,</italic> associations <italic>Phyteumato columnae-Primuletum carniolicae</italic>, <italic>Primulo carniolicae-Potentilletum clusianae</italic> and the subassociation <italic>Primuletum carniolicae violetosum biflorae,</italic> temporarily classified into the alliance <italic>Cystopteridion</italic> and order <italic>Potentilletalia caulescentis</italic>. Only the new association <italic>Paederoto luteae-Potentilletum caulescentis</italic> is classified into the alliance <italic>Physoplexido comosae-Saxifragion petraeae.</italic> The elevational range of chasmophytic communities with <italic>Primula carniolica</italic> is 200 to 1460 m a.s.l. Species that most commonly accompany <italic>Primula carniolica</italic> in rock crevices include <italic>Paederota lutea</italic>, <italic>Phyteuma scheuchzeri</italic> subsp. <italic>columnae</italic>, <italic>Sesleria caerulea, Aster bellidiastrum</italic> and moss <italic>Orthothecium rufescens</italic>.</p></abstract>ARTICLE2020-06-25T00:00:00.000+00:00 (Malvaceae) a new genus for the flora of Africa, with nomenclatural notes<abstract><title style='display:none'>Abstract</title><p>As part of ongoing studies of Tunisian Malvaceae, a population of <italic>Phymosia umbellata</italic> was discovered in Monastir city. It represents the first generic record for the national and continental flora. Morphological characters, as well as ecological data are given. A list of all the accepted names in <italic>Phymosia</italic>, their synonyms and types is also provided, with nomenclatural notes about some accepted <italic>Phymosia</italic> species.</p></abstract>ARTICLE2020-06-25T00:00:00.000+00:00en-us-1