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Floristic research carried out in the region of Warmia and Mazury led to the discovery, on 16 May 2011, of a small cranberry stand in a forest, in a small raised bog with enclaves characteristic of transitional moors. The discussed stand is situated in the southern part of the Olsztyn Forest Division, district 499, in the vicinity of the eastern boundary of the Lake Kośno landscape reserve.
W trakcie badań florystycznych prowadzonych w gminie Purda na terenie województwa warmińsko- mazurskiego znaleziono nowe stanowisko chamedafne północnej Chamaedaphne calyculata (L.) Moench. Znajduje się ono na śródleśnym torfowisku wysokim, oddalonym o niecałe 2 km na południowy wschód od wsi Nerwik i o 2,5 km na północny wschód od wsi Giławy, na granicy oddziałów 224f i 238a, w Nadleśnictwie Wipsowo
Podczas badań florystycznych prowadzonych 18 sierpnia 2010 roku w południowej zatoce jeziora Serwent (gm. Purda, woj. warmińsko-mazurskie) stwierdzono występowanie grążela drobnego Nuphar pumila (Timm) DC. – rzadkiego gatunku należącego do reliktów glacjalnych – w postaci pięciu zwartych fitocenoz Nupharetum pumilae o powierzchni od 20 do 60 m2. Jest to jedyne, aktualnie potwierdzone stanowisko występowania tego gatunku w województwie warmińsko- -mazurskim
The paper presents detailed results of research into floristic and phytosociological studies on the vegetation of Olecko Wielkie Lake, carried out in 2009. During the study 28 hydrophytic taxa, 27helophytic taxa and 14 species classified as coexisting were identified, including of those forming the structure of particular plant communities. In total 69 plant taxa were found, without trees and shrubs growing on the lake shoreline. The paper presents the occurrence of protected, endangered, and rare species in Poland. The paper also presents a comparison of recent studies with does carriedout in the period in 1983–1986, allowing for the identification of changes in the flora and vegetationof Olecko Wielkie Lake between 1983 and 2009
Leatherleaf Chamaedaphne calyculata (L) Moench is a relict, rare and endangered species in Poland. There are no reports on the micropropagation of Chamaedaphne calyculata in the literature. Therefore, the aim of this study was to propose a propagation protocol for leatherleaf via indirect organogenesis using leaves and stems (internodal segments) derived from mature plants growing in a natural stand and from plants grown in vitro as explants. The medium developed by Anthony et al. (2004) with 100%, 50% and 25% salt concentrations, supplemented with IAA (5 and 10μM) and TDZ (5 and 10μM), was used for callus development and the induction of adventitious shoots. The media developed by Anthony et al. (2004) and Anderson (1980), both containing 10μM TDZ and 5μM IAA or 2.28μM zeatin, were used for adventitious shoot elongation. Secondary explants proved to be the most effective starting material for callus induction, the regeneration and elongation of adventitious shoots. The most supportive medium for callus induction and growth and the induction of adventitious shoots was the full medium proposed by Anthony et al. (2004) containing 5μM IAA and 10μM TDZ. Anderson’s (1980) medium containing 2.28μM zeatin delivered optimal results in the elongation of adventitious shoots of Ch. calyculata. Roots were cultivated on Anderson’s (1980) phytohormone-free medium. Approximately 65% of the plantlets survived after transfer to the sphagnum-peat and perlite mixture (3:1). The plants grew normally without any signs of morphological variation. This study makes the first ever attempt to propose an effective micropropagation protocol for Ch. calyculata.
During a floristic study conducted in 2003 in the “Beaver Refuge on the Pasłęka River” reserve(Olsztyn Lakeland, north-eastern Poland), a new stand was found of Nuphar pumila(Timm) DC(a rare species in Poland, one of the glacial epoch survivors) in a humic and forested closed water body within Warmińsko-Mazurskie Province. The aim of the study, conducted in 2013 and presented in this paper, was to confirm the presence of the stand, and to determine the current conservation statusof the N. pumilapopulation. In 2003, the occurrence of N. pumilain the southern bay of the lake wasfound to be only one stand. The study conducted in 2013 confirmed the presence of the species inquestion in a lake (regionally known as Jeziorko Leśne). In addition, a distinct extension of the range of N. pumilacompared to the status in 2003 was observed; currently, the species is found in severaldozen stands. As in previous years,N. pumilagrew on the bottom of the water body to a depthof approx. 70–90 cm, and developed mainly submerged leaves. It covered the largest areas in thenorth-eastern part of the lake
The use of simple GIS and GPS techniques as tools supporting field data collection in the process of macrophyte-based assessment and classification of the ecological status of lakes is described in the paper. The ecological status of Lake Długie was determined with traditional water quality evaluation methods, including the “anchor” or “diving and GIS” method. Obtained results show simple GIS techniques for registering submerged plant communities supplemented with terrain investigations involving scuba diving, producing more accurate data than those acquired with traditional methods.
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