Some contributions to the wall flora of North Cyprus

A survey of plants growing on walls in North Cyprus resulted in a preliminary checklist of some 200 vascular plant species. This corresponds to more than 15 percent of all species known for North Cyprus. In comparison to Europe the amounts of therophytes, phanerophytes and geophytes are considerably higher

Some contributions to the wall flora of the French coastland between Antibes and Menton (Côte d’Azur)

86 vascular plant species are observed on walls between Antibes and Menton. Most records are made on retaining walls and historical fortifications. 60,5 % of the plants are indigenous, 7,0 % are archaeophytes, 32,6 % are neophytes. Wooded species, at least 20 (23,3 %) play a more important role compared to Central Europe due to the climatically preferred area in the western Mediterranean. Some further species which may grow spontaneously in joints are pointed out, however clear evidence could not be found

Wall flora of villages in the northern foreland of the Harz mountains (Sachsen-Anhalt)

The wall vegetation of 15 villages at the northern foreland of the Harz mountains (Germany, Sachsen-Anhalt) have been investigated. In a whole 173 vascular plants have been recorded whereas the micro habitats wall joints and wall tops are reported seperately. 173 vascular plants have been found in/on walls, 153 of them in wall joints, 106 on wall tops. The most frequent species are common ruderal plants and weeds whereas the amount of pteridophyta is low. 37% of the whole species pool are aliens. There exists a positive correlation between the whole number of species and the number of the neophytes for the wall joints as well as for the wall tops. Our results show obviously no negative effect of the neophytes on the diversity of the wall flora

Ruderal- und Saumgesellschaften des Etschtals zwischen Bozen und Rovereto / von Dietmar und Elisabeth Brandes

Aus dem Etschtal zwischen Bozen und Rovereto werden 44 Ruderal- und Saumgesellschaften beschrieben und mit Literaturangaben aus anderen Teilen Mitteleuropas verglichen. Die meisten Assoziationen werden erstmalig für Südtirol mit Aufnahmen belegt. Die Ruderalvegetation spiegelt die klimatischen Verhältnisse des Untersuchungsgebietes sehr genau wider, sowohl den submediterranen Einfluß im südlichen Teil, als auch die mit zunehmender Höhe abnehmende Klimagunst.44 ruderal and skirt communities are described from the Etsch valley between Bozen and Rovereto and compared with literature dates from other parts cf Central Europe. Most of the phytosociological associations are documented for the first time for South Tyrol. The ruder al vegetation reflects the climate in the explored area exactly, on the one hand the increasing submediterranean influence, on the other the decreasing favour of climate by increasing of altitude

Occurrence of cultivated and running wild ornamental plants in villages exemplified by the western part of Sachsen-Anhalt

The occurrence of wild growing ornamental plants was investigated in 15 villages in Sachsen-Anhalt. The stock of ornamental plants in the gardens and on the graves was also included. Altogether we found 268 cultivated herbs in the gardens and on the graves. 96 of them occurred subspontaneously in the villages. The most important region of origin is Europe (61,4 % of the cultivated species), followed by Asia (19,8%) and America (12,5%). 8 species are often planted and also occur frequently subspontaneously. 26 species are often cultivated but grow rarely wild. 4 species occur subspontaneously more frequently than cultivated. Cemeteries and unsealed areas in the villages are the most important structures and microhabitats for the subspontaneous occurence of ornamental plants. The effects of horticulture on the indigenous flora are finally discussed

Flora and Vegetation of villages in the western part of Sachsen-Anhalt

Flora and Vegetation in 15 villages in Sachsen-Anhalt are investigated. Altogether 569 vascular plant species are found. 189 of them occur with high frequency, that means in 61% or more of the investigated villages. The most important structure or microhabitat for the occurence of species are the cemeteries and the streets and free places in the villages. Plant communities of the classes Polygono-Poetea annuae, Stellarietea mediae, Artemisietea vulgaris and Molinio-Arrhenatheretea are documented. Measures to preserve the village flora and Vegetation are given

Species area-relationships and frequency - Floristical data analysis of 44 isolated woods in northwestern Germany

44 isolated ancient woods (9,3-8579 ha) in southeastern Lower Saxony (northwestern Germany), where the Tertiary hilly country meets the Pleistocene plain, were investigated. Complete lists of 273 vascular plant species showing a more or less strong preference for woodlands were made for each wood including all the species of the groups Querco-Fagetea, Trifolio-Geranietea, Galio-Calystegietalia (selection of species) and Epilobietea. The majority of character species of woods show either a low or a high frequency, whereas fewer ones have medium frequencies. Most of the rarer species have their main occurrence in the larger woods. The number of species of all of the four groups increases with area of the wood and the correlation between the number of species and the log of area is related by a highly significant linear regression. Comparison of a single wood with two smaller woods of the same total area reveals that the two smaller woods on average have the greater number of wood species. Considering this and the fact that the rarer species have their main occurrence in the larger woods, when discussing questions of nature conservation a simple comparison of number of species and area is problematical

Korrelation zwischen Artenzahlen und Flächengrößen von isolierten Habitaten dargestellt an Kartierungsprojekten aus dem Bereich der Regionalstelle 10 B

Am Beispiel des nördlichen Harzvorlandes wird für isolierte Habitate wie alte Wälder, Waldwiesen, städtische Gehölzbestände und Städte die Abhängigkeit der Artenzahlen von den Flächengrößen dargestellt. Die Artenzahl steigt i.a. mit der Fläche an. Für alte Wälder, Waldwiesen und städtische Gehölzbestände zeigt sich bei lognormaler Darstellung in großen Bereichen eine lineare Abhängigkeit. Die Artenzahl der Gefäßpflanzen ist in mitteleuropäischen Städten enger mit der Einwohnerzahl bzw. -dichte als mit der Flächengröße korreliert. Nach den bisherigen Ergebnissen sind ca. 530-560 Arten für Kleinstädte, ca. 650 - 730 für kleinere Großstädte, 900 - 1000 für zumeist ältere Großstädte und mehr als 1100 (meist wohl über 1300) für Millionenstädte zu erwarten.On hand of examples from the northern foreland of the Harz mountains the species-area relationship of isolated habitats, viz ancient woods, forest meadows, urban forests and towns is described. In general the number of species increases with the area. Correlating log of number of species and log of area of ancient woods, forest meadows and urban forests a linear relationship was found over a wide range. The number of vascular plant species found in central European cities is more close correlated to the number of inhabitants and the density of population than it is to the area. According to the present results the following relationships between the number of vascular plant species and the human population can be expected