1,275 research outputs found
Validation of the names of some Cretan high mountain syntaxa, with considerations about Article 3i, ICPN
No full textTo comply with the International Code of Phytosociological Nomenclature (ICPN), we validate the names Saturejo spinosae-Scutellarietalia hirtae, Arenarion creticae, Verbascion spinosi and Lomelosio sphacioticae-Centranthetum sieberi. Two divergent interpretations of Article 3i about the point at issue in the validation of the first three names are discussed. Syntaxonomic reference: Bergmeier (2002), unless indicated otherwise in the text
Utricularia ochroleuca and U. minor new‐found in nutrient‐poor waters of northern Greece
No full textNutrient-poor waters with small Utricularia species have been unknown in most of southern Europe and the Balkans. All the more notable are occurrences of Utricularia ochroleuca and Utricularia minor in north Greece. The records presented in this paper extend the known southeast European distribution boundaries of both species southward, and constitute U. ochroleuca a new species to Greece and southern Europe. U. ochroleuca was found in small peaty pools and seepage sites with base-poor water within subalpine fens and headwaters, U. minor in very shallow base-containing waters of spring brooks in upper montane ophiolite environments. The plant species composition of the Utricularia vegetation and its habitats are described. The pertinent vegetation types – Utricularietum ochroleucae and Scorpidio-Utricularietum, respectively, as well as their higher-ranking syntaxa – are new to Greece and the Balkans. The vegetation with U. ochroleuca forms part of the Annex I habitat type 3160 of the EU Habitats Directive, which is also new to Greece. Nature conservation status and management conditions of the detected plant communities and habitats with Utricularia in northern Greece are discussed
New floristic records, confirmations and other phytogeographical notes from Crete (Greece)
No full textThe present list of phytogeographically noteworthy plants recorded between 2008 and 2010 in Crete (Kriti, Greece) includes herbarium specimen data with taxonomic, ecological and distributional annotations of 53 vascular plants and one bryophyte species. Twelve native taxa are new for Crete: Althenia orientalis, Anthyllis vulneraria subsp. pindicola, Carex riparia, Cerastium pumilum s.l., Drepanocladus aduncus, Elytrigia atherica, Erodium chium, Galium parisiense, Plantago coronopus s. str., P. crassifolia, P. crypsoides and P. phaeostoma. The latter two are new to the Greek territory and P. phaeostoma to Europe, too. The occurrence of the following species in Crete could be confirmed after many decades, for some after more than a century: Crypsis aculeata, Parapholis filiformis, Polycarpon alsinifolium and Turgenia latifolia. Two new combinations are introduced: Lomelosia sphaciotica subsp. decalvans and Schedonorus pluriflorus
<i>Filago wagenitziana (Asteraceae, Gnaphalieae)</i>, a new species from western Crete, Greece
No full textFilago wagenitziana, discovered in 2008 in western Kriti (Crete), is described as a new species, illustrated and compared with similar species of the genus. This dwarf annual is a local endemic of the easternmost spurs of the Lefka Ori (White Mountains), growing between 700 and 800 m in altitude. It is restricted to open, shallow, semi-wet quartzite soil, chiefly in semi-shady conditions in or next to mixed mesophilous woodland with Platanus orientalis. The total known population of F. wagenitziana consists of very few subpopulations, comprising perhaps less than 1000 plants, in an area of about 1 km(2). This small area, which also harbours the only Sphagnum spring fen in Crete, lies only just outside the Natura 2000 site Asfendou-Kallikratis. The habitat of F. wagenitziana and its surroundings are endangered by water exploitation
The vegetation of Germany – a cross-referenced conspectus of classes, orders and alliances based on the EuroVegChecklist
No full textDie European Vegetation Checklist (EuroVegChecklist; MUCINA et al. 2016) ist eine Referenzliste der Vegetationseinheiten Europas samt angrenzender Gebiete. Sie bietet einen nomenklatorisch geprüften Bezugsrahmen mit ausführlicher Synonymie aller pflanzensoziologischen Klassen, Ordnungen und Verbände und kann zur syntaxonomischen Standardisierung auf nationaler und regionaler Ebene verwendet werden. Die vorliegende Arbeit setzt die EuroVegChecklist in Beziehung zu sechs pflanzensoziologischen Standardwerken Deutschlands, nämlich dem „Verzeichnis der Pflanzengesellschaften Deutschlands“ (RENNWALD & Mitarb. 2002), „Süddeutsche Pflanzengesellschaften“ (OBERDORFER 1977, 1978, 1983, 1992), „Die Pflanzengesellschaften Niedersachsens“ (PREISING et al. 1990a, b, 1993, 1995, 1997, 2003, 2012), „Pflanzengesellschaften Nordostdeutschlands“ (PASSARGE 1996, 1999, 2002), „Die Pflanzengesellschaften Mecklenburg-Vorpommerns und ihre Gefährdung“ (BERG et al. 2001a, 2004) und dem „Verzeichnis und Rote Liste der Pflanzengesellschaften Sachsens“ (BÖHNERT et al. 2001). Sie bietet eine aktuelle und standardisierte Übersicht aller höheren Syntaxa Deutschlands respektive einiger größerer Teilräume und schafft eine Grundlage für weitere quantitative und qualitative Vergleiche. Die nach der EuroVegChecklist referenzierte Vegetation Deutschlands umfasst 61 Klassen, 120 Ordnungen und 233 Verbände, was 55 %, 40 % bzw. 21 % der quantifizierbaren syntaxonomischen Diversität der gesamteuropäischen Vegetation entspricht (ohne Kryptogamen-, jedoch mit Armleuchteralgen-Syntaxa). Der „Taxa-Syntaxa-Index“, der Quotient aus der Zahl der Taxa und der Syntaxa des betreffenden Gebietes, wird als ein Maß für Delta-Diversität, verstanden als regionale Differenziertheit der Vegetation in einem Bezugsraum, hier eingeführt. Bezogen auf die Verbände beträgt er für Deutschland 18,5. Alle Vegetationsklassen, -ordnungen und -verbände werden mit einer kurzen Beschreibung gekennzeichnet und das Vorkommen jedes Verbandes und seine Bandbreite in Deutschland mit bis zu vier Assoziationen belegt.The EuroVegChecklist (MUCINA et al. 2016) is a reference catalogue of the European vegetation. It provides a synopsis of hierarchical vegetation classes, orders and alliances which can be used as a tool towards standardization of other syntaxonomic surveys and concepts. The present paper crossreferences the EuroVegChecklist to six regional and national influential works on the vegetation of Germany with different syntaxonomic concepts. It provides an update of the vegetation diversity of the country and some of its major territories and allows for quantitative and qualitative comparison of syntaxonomic variation. The EuroVegChecklist-referenced vegetation of Germany comprises 61 vegetation classes, 120 orders and 233 alliances, corresponding to 55 %, 40 % and 21 % of the pan-European numbers, respectively. Germany`s “Taxa-Syntaxa Index”, a measure of delta diversity, here introduced and calculated by dividing the number of taxa by the number of syntaxa, totals 18.5 at the level of alliance. Each vegetation class, order and alliance is characterized briefly in ecological, biological and geographic terms (in German), specifying the verbal diagnosis of the EuroVegChecklist for the Central European situation. One to four associations per alliance, documented mostly in the German reference works but with updated name if necessary, are listed to verify the alliances’ national occurrence
KRITI – the vegetation of Crete database
No full textThe TURBOVEG database on the Cretan covers the South Aegean island of Crete including surrounding islands. It contains plot data on all kinds of woody and non-woody vascular plant vegetation. Bryophytes are included in exceptional cases. It includes relevés from all available sources but chiefly own unpublished relevés. The database provides information on about 90% of the regional flora and of more than 100 endemics. KRITI (GIVD ID EU-GR-001) is a database to be continued. Publications dealing with selected vegetation types or areas have been published
Ecology and distribution of the Aegean wetland endemics Carex cretica and Lathyrus neurolobus
No full textLathyrus neurolobus and Carex cretica are two narrowly distributed, and often co-occurring, Aegean species of wetland habitats. Several new records are given from their main, or only (L. neurolobus), distribution area in western Crete (Greece). The species composition and ecological preferences are analysed using explorative ordination methods and classification. The most important habitats are submontane riparian Platanus orientalis woodland (C cretica), steep wet banks (Adiantion capilli-veneris; both species), and springs and seepage meadows (Brachypodio-Holoschoenion; both species). Both species are vulnerable due to increasing exploitation of spring and surface waters
Ecology and distribution of the Aegean wetland endemics Carex cretica and Lathyrus neurolobus
No full textLathyrus neurolobus and Carex cretica are two narrowly distributed, and often co-occurring, Aegean species of wetland habitats. Several new records are given from their main, or only (L. neurolobus), distribution area in western Crete (Greece). The species composition and ecological preferences are analysed using explorative ordination methods and classification. The most important habitats are submontane riparian Platanus orientalis woodland (C cretica), steep wet banks (Adiantion capilli-veneris; both species), and springs and seepage meadows (Brachypodio-Holoschoenion; both species). Both species are vulnerable due to increasing exploitation of spring and surface waters
SPECIES RICHNESS, ALPHA AND BETA DIVERSITY OF TREES, SHRUBS AND HERBACEOUS PLANTS IN THE WOODLANDS OF SWAT, PAKISTAN
No full textThe variation in species richness and diversity of trees, shrubs and herbs in the mountains of Miandam, Swat, North Pakistan, along an elevation gradient between 1600 m and 3400 m was explored. Field data were collected in 18 altitudinal intervals of 100 m each. Polynomial regression was used to find relations of the different growth forms with elevation. The Shannon index was used for calculating alpha-diversity and the Simpson index for beta-diversity. Species richness and alpha-diversity of herbs were unrelated to elevation. Herbaceous species turnover was high, ranging between 0.46 and 0.89, with its maximum between 2700 and 3000 m. Hump-shaped relationship was observed for shrubs with maximum richness between 2000 and 2200 m; and alpha-diversity decreased monotonically. Turnover of shrub species was highest between 2000 and 2500 m. Tree species richness was highest at low elevations, and alpha-diversity was relatively low along the entire gradient. Tree species turnover was also high in the lower zone and again at 2600-2800 m. Species richness of all vascular plants was highest at 2200-2500 m, and alpha-diversity was highest in the lower part of the gradient. Beta diversity of all growth forms was quite high ranging between 0.53 and 0.87along the entire gradient reflecting high species and structural turnover
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