Martin-Luther-Universität Halle-Wittenberg: Elektronische Zeitschriften
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Zur Verbreitung und Lebensgeschichte der Wildtulpe (Tulipa sylvestris L.) und Bemerkungen zur Chorologie der Gattung Tulipa L.
No full textBeiträge zur Pilzgeographie des hercynischen Gebietes: II. Reihe: Einige thermophile Elemente der Pilzflora
Get PDFWege von der extensiven Grünlandnutzung zur intensiven Futterproduktion im Harz unter besonderer Berücksichtigung von Forschungs- und Entwicklungsarbeiten im VEG Hasselfelde, Kreis Wernigerode
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Vegetationsdynamik und Florenwandel im ehemaligen mitteldeutschen Waldschutzgebiet "Hainich" im Intervall 1963 - 1995
No full textChanges in vegetation and flora of beech forests in the lower mountainous limestone region of Central Germany during the past 3 decades have been investigated and are discussed. In 1963 a phytosociological inventory had been carried out on 51 test plots. 11 out of 12 vegetation units found in 1963 were still present in 1995, but only 27 in 51 test plots remained in the same state refered to the concerning vegetation units. Causal factors of these changes which have to be considered are first the increase of stand canopy closure, enhanced by nearly missing sylvicultural measures between 1965 and 1992; so shade-tolerant species of the field-layer vegetation like Allium ursinum and Veronica montana (newcomer) were able to expand considerably. Second the permanent impact of air pollution, especially nitrogen compounds, is promoting herbaceous species with higher demand on moisture and nitrogen supply of the sites, among them first of all Circaea lutetiana. The acidification of soils seems to have up till now no remarkable influence on composition and development of plant species. The described area is proposed to become nature preserve again- within the beech wood national park "Hainich".Changes in vegetation and flora of beech forests in the lower mountainous limestone region of Central Germany during the past 3 decades have been investigated and are discussed. In 1963 a phytosociological inventory had been carried out on 51 test plots. 11 out of 12 vegetation units found in 1963 were still present in 1995, but only 27 in 51 test plots remained in the same state refered to the concerning vegetation units. Causal factors of these changes which have to be considered are first the increase of stand canopy closure, enhanced by nearly missing sylvicultural measures between 1965 and 1992; so shade-tolerant species of the field-layer vegetation like Allium ursinum and Veronica montana (newcomer) were able to expand considerably. Second the permanent impact of air pollution, especially nitrogen compounds, is promoting herbaceous species with higher demand on moisture and nitrogen supply of the sites, among them first of all Circaea lutetiana. The acidification of soils seems to have up till now no remarkable influence on composition and development of plant species. The described area is proposed to become nature preserve again- within the beech wood national park "Hainich"
Bemerkungen zum Fund eines teilalbinotischen Teichmolches (Triturus vulgaris LINNAEus, 1758) östlich von Halle (Saale).
No full textIn April 1995, a male smooth newt Triturus vulgaris L. was found in a smalllake in Dieskau (Saalkreis) near Halle (Saale). The specimen exhibited partial albinism. Although the newt was lacking body pigmentation the usually dark spots were still visible in a slight grey colour. The ventral side and the ventral margin of the tail were orange. The iris was black, whereas the eye background was red. This record seems to be the first of an albinotic Triturns in the surroundings of Halle. The phenomenon of albinism in this individual is discussed concerning similar findings in Triturus vulgaris and other Triturus species.In April 1995, a male smooth newt Triturus vulgaris L. was found in a smalllake in Dieskau (Saalkreis) near Halle (Saale). The specimen exhibited partial albinism. Although the newt was lacking body pigmentation the usually dark spots were still visible in a slight grey colour. The ventral side and the ventral margin of the tail were orange. The iris was black, whereas the eye background was red. This record seems to be the first of an albinotic Triturns in the surroundings of Halle. The phenomenon of albinism in this individual is discussed concerning similar findings in Triturus vulgaris and other Triturus species
