<abstract xmlns="http://www.w3.org/1999/xhtml"> Historical and current occurrence of halophytic-ruderal species <italic>Hordeum geniculatum </italic>was studied in Slovakia during 2003 - 2010. The species occurred only in the Podunajská nížina Lowland, where 16 sites were found in total including historical and recent locations. Recently, the number of sites decreased markedly and we confirmed only four localities. Due to the sharp decrease in the number of sites and proper habitats, <italic>Hordeum</italic><italic>geniculatum </italic>is re-evaluated as endangered (EN) plant of Slovak flora.</abstract>

Institute of Botany, Slovak Academy of Sciences, Dúbravská cesta 9, SK-845 23, Bratislava, Slovakia

Department of Botany, Slovak University of Agriculture, Tr. A. Hlinku 2, SK-949 76 Nitra, Slovakia

Institute of Botany and Zoology, Masaryk University, Kotlářská 2, CZ-61137 Brno, Czech Republic

The Revision of Historical and Current Distribution of Hordeum Geniculatum All. (Poaceae) In Slovakia

<abstract xmlns="http://www.w3.org/1999/xhtml"> In the present study, we investigated plant communities with Yellow Oat Grass (<italic>Trisetum flavescens </italic>(L.) Pb.) in the submontane and montane regions of Slovenia. In 2005-2007 ninety-one relevés were collected by using the standard procedure of the Braun-Blanquet approach. Relevés were analysed with multivariate analysis and classified within two associations: <italic>Astrantio-Trisetetum </italic>(<italic>Polygono-Trisetion</italic>) and the <italic>Pastinaco-Arrhenatheretum</italic> (<italic>Arrhenatherion</italic>). Management practices, soil conditions and altitude were found to be significant factors for a further subdivision of both associations. Within the <italic>Astrantio-Trisetetum </italic>association three subassociations could be distinguished: -<italic>typicum</italic>, -<italic>buphthalmetosum </italic>and -<italic>trollietosum</italic>, and subassociations -<italic>typicum</italic>, -<italic>medicagetosum</italic><italic>lupulinae</italic>, as well as -<italic>lolietosum </italic>subass. nova in the <italic>Pastinaco-Arrhenatheretum</italic>. The floristic composition and ecological characteristics of these plant communities are described and their implications for grassland conservation in Slovenia are discussed.</abstract>

University of Maribor, Faculty of Natural Sciences and Mathematics, Department of Biology, SI-2000 Maribor, Koroška 160, Slovenia

Plant Communities with Yellow Oat Grass (Trisetum Flavescens (L.) Pb.) In The Submontane And Montane Regions Of Slovenia

<abstract xmlns="http://www.w3.org/1999/xhtml"> Changes of species composition, plant community strategy and functional response trait turnover were studied in a succession from dry pastures to a forest community (oak-hornbeam forests). The following question was asked: are functional response traits and plant community strategies indicators of TAA (time since agricultural land use abandonment), thus of a specific succession stage.Indirect gradient analysis (DCA) was used in order to observe the position of the relevés along the axis and to correlate it with TAA. It was found that the position of relevés on DCA axis 1 is our proxy for TAA. Correlations (Spearman’s <italic>rho</italic>) between the occurrence of plant functional traits and TAA were performed.Low-growing herb species with scleromorphic leaves and green or red flowers are the predominant plant type on grassland areas, while plant species with digitate, hydro or mesomorphic leaves and white flowers typically prevail in forest. The proportion of chamaephytes increases immediately after land abandonment (afforestation). In a closed forest stand, there are many more herb species with vegetative propagation (bulbils). Herbal species in those stands most often reward pollinators with pollen. The ecological strategy of the entire plant community changes with spontaneous afforestation. On grassland, stress-tolerant species are dominant. After 10 years, the community is defined as CS and after 200 years as a community with a C-CS strategy.</abstract>

Institute of Biology, Scientific Research Centre of the Slovenian Academy of Sciences and Arts, Novi trg 2, SI-1000 Ljubljana, Slovenia.

Institute of Biology, Scientific Research Centre of the Slovenian Academy of Sciences and Arts, Novi trg 2, SI-1000 Ljubljana, Slovenia./University of Nova Gorica, Vipavska cesta 13, SI-5000 Nova Gorica, Slovenia.

Functional Response TRAITS and Plant Community Strategy Indicate the Stage of Secondary Succession

<abstract xmlns="http://www.w3.org/1999/xhtml"> A total of 546 releves collected in western Bulgaria and referred to <italic>Festuco-Brometea </italic>were classified into the alliances <italic>Festucion valesiacae</italic>, <italic>Saturejion montanae</italic>, <italic>Cirsio-Brachypodion pinnati </italic>and <italic>Chrysopogono-Danthonion calycinae</italic>. All releves assigned to alliance <italic>Cirsio-Brachypodion pinnati </italic>were further classified towards lower level which resulted in the description of a new association - <italic>Hieracio pilosellae-Festucetum dalmaticae </italic>and two new subassociations added to ass. <italic>Galio lovcense-Artemisietum chamaemelifoliae</italic>. Both associations were ecologically well differentiated on the basis of soil parameters (pH and humus content) as well as some additional factors (exposition, land use, etc.).</abstract>

Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Street, Bl. 23, 1113 Sofia, Bulgaria

Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Street, Bl.23, 1113 Sofia, Bulgaria

Festuco-Brometea In Western Bulgaria with an Emphasis on Cirsio-Brachypodion Pinnati

<abstract xmlns="http://www.w3.org/1999/xhtml"> The paper presents results of actual phytocoenological research of acidophilous dry grasslands of the <italic>Koelerio-</italic><italic>Phleion phleoidis </italic>Korneck 1974 alliance on the quartzite bedrock in western Slovakia. The modified TWINSPAN analysis distinguished two associations in the study area. <italic>Avenulo pratensis-Festucetum valesiacae </italic>Vicherek et al. in Chytry et al. 1997 is dominated by <italic>Festuca valesiaca </italic>s.l. and it is distributed on the quartzite hills in the Tribeč Mts. <italic>Potentillo heptaphyllae-Festucetum rupicolae </italic>(Klika 1951) Toman 1970 occurs at sites in the Biele Karpaty Mts and Považsky Inovec Mts and it is dominated by <italic>Festuca rupicola</italic>. The paper brings very first data on distribution of <italic>Avenulo pratensis-Festucetum valesiacae </italic>in Slovakia and extends knowledge on occurrence of <italic>Potentillo heptaphyllae-Festucetum rupicolae</italic>. Both associations represent very rare vegetation types of Central Europe. In Slovakia, they occur locally at small sized stands and are threatened by successional changes caused by cessation of traditional management and island occurrence within other vegetation types. Main environmental gradients responsible for variation in species composition of these grasslands were revealed by the principal component analysis (PCA) and interpreted using indicator values and measured characteristics of the study sites. The major pattern of variation reflects altitude, which is negatively correlated with temperature and soil depth. The relationship between species composition and environmental factors (pedology, topography, geographical position) was analysed by redundancy analysis (RDA). The most important factor affecting the data variation was longitude followed by soil pH, slope and latitude.</abstract>

Institute of Botany, Slovak Academy of Sciences, Dubravska cesta 9, SK-845 23 Bratislava, Slovakia/Homeland Museum in Považska Bystrica, Ul. odborov 244/8, SK-017 01 Považska Bystrica, Slovakia

State Nature Conservancy of the Slovak Republik, Administration of Protected Landscape Area Ponitrie, Samova 3, SK-949 01 Nitra, Slovakia

Acidophilous Dry Grasslands on the Quartzite Bedrock in Western Slovakia

<abstract xmlns="http://www.w3.org/1999/xhtml"> The evolutionary history of <italic>Ophioglossaceae </italic>is enigmatic mainly because fossils of the family trace back only from the earliest Tertiary. Phylogenetic analyses indicate that <italic>Helminthostachys </italic>is sister to the broadly defined <italic>Botrychium</italic>. Generally the sporophore of <italic>Botrychium </italic>is a pinnately compound, whereas it is simple in <italic>Helminthostachys.</italic> Here examples of different <italic>Helminthoistachys </italic>are represented which show double or triple spikes with some variations. Plants showing variations in their spike morphology are also grown normally. Variations of <italic>Helminthostachys </italic>spike morphology indicate a tendency to form a compound sporophore structure and in that way have a strong relationship with <italic>Botrychium</italic>.</abstract>

Present Address: Rishi Bankim Chandra College, Naihati, North 24 Parganas, West Bengal, India, Pin-743165/Department of Botany, Balurghat College, P.O. Balurghat, District – Dakshin Dinajpur, West Bengal, India, Pin-733101

Department of Botany, Balurghat College, P.O. Balurghat, District – Dakshin Dinajpur, West Bengal, India, Pin-733101

Morphological Varia Tions of Fertile Spike in Helminthostachys Zeylanica (L.) Hook

AHEAD OF PRINT

Volume 23 (2024): Issue 1 (June 2024)

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

Volume 22 (2023): Issue 1 (June 2023)

Volume 21 (2022): Issue 2 (December 2022)

Volume 21 (2022): Issue 1 (June 2022)

Volume 20 (2021): Issue 2 (December 2021)

Volume 20 (2021): Issue 1 (June 2021)

Volume 19 (2020): Issue 2 (December 2020)

Volume 19 (2020): Issue 1 (June 2020)

Volume 18 (2019): Issue 2 (December 2019)

Volume 18 (2019): Issue 1 (June 2019)

Volume 17 (2018): Issue 2 (December 2018)

Volume 17 (2018): Issue 1 (June 2018)

Volume 16 (2017): Issue 2 (December 2017)

Volume 16 (2017): Issue 1 (June 2017)

Volume 15 (2016): Issue 2 (December 2016)

Volume 15 (2016): Issue 1 (June 2016)

Volume 14 (2015): Issue 1 (June 2015)

Volume 13 (2014): Issue 2 (December 2014)

Volume 13 (2014): Issue 1 (June 2014)

Volume 12 (2013): Issue 2 (December 2013)

Volume 12 (2013): Issue 1 (June 2013)

Volume 11 (2012): Issue 2 (December 2012)

Volume 11 (2012): Issue 1 (January 2012)

Volume 10 (2011): Issue 2 (December 2011)

Volume 10 (2011): Issue 1 (June 2011)

Volume 9 (2010): Issue 2 (December 2010)

Volume 9 (2010): Issue 1 (June 2010)

Volume 8 (2009): Issue 2 (January 2009)

Volume 8 (2009): Issue 1 (June 2009)

Volume 7 (2008): Issue 2 (December 2008)

Volume 7 (2008): Issue 1 (June 2008)

Volume 6 (2007): Issue 2 (December 2007)

Volume 6 (2007): Issue 1 (July 2007)

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. 