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Pociecha A.,Instytut Ochrony Przyrody PAN | Higgins T.,National University of Ireland | McCarthy K.,National University of Ireland
Oceanological and Hydrobiological Studies | Year: 2010

During a winter-spring season, physicochemical variables and plankton dynamics were studied in Lough Derg (Ireland). Samples were collected monthly from three water layers (surface, middle and bottom) at a deep central sampling point on the lake. As expected, phyto- and zooplankton densities and chlorophyll a concentrations were low during the study period, probably reflecting low temperatures and wind-driven turbulence typical of the winter-spring period. Diatoms and rotifers were the most abundant phyto- and zooplankton groups, respectively.

The transitional bog in upper pARt of Łopień Mt. hARbours rARe in the CARpathians plant communities: Eriophorum angustifolium-Sphagnum fallax, CARici-Agrostietum caninae and Bazzanio-Piceetum. Also rARe peat bog plant species, as: Drosera rotundifolia, Eriophorum vagi-natum, Oxycoccus palustris and Vaccinium uliginosum occur here. Presently this bog is threatened by overgrowing with shrub willows.

Koczur A.,Instytut Ochrony Przyrody PAN
Fragmenta Floristica et Geobotanica Polonica | Year: 2014

The total area of fen vegetation in Kraków city didn't exceed half a hectare. Spring fens were overgrown by: Caricetum davallianae, Sphagno warnstorfii-Eriophoretum latifolii variant with Tomentypnum nitens, Carici canescentis-Agrostietum caninae, Carex nigra and C. panicea community and Menyanthes trifoliata community. Abandonment of meadows has resulted in degradation and overgrowing spring fens scattered among them.

Gonera M.,Instytut Ochrony Przyrody PAN
Przeglad Geologiczny | Year: 2010

The idea of establishing protected landscape parks was put forward in Poland 50 years ago. The result was fairly quick expansion in the number of protected landscape areas, up to 120 by now. Figures 1 and 2 show the progress in creation of such areas and their geographical distribution. The major goals and approach in management of the landscape parks were changing in time. The following stages may be distinguished in the landscape parks policy: protection of environment followed by landscape protection, protection of nature diversity and currently - biodiversity conservation (in accordance with Natura 2000prerogatives). Also "geodiversity" make it necessary to treat the existing landscape parks as the potential areas of geoparks. One of key requirements which should be met by geoparks is a network of geological sites subjected to legal protection. These sites are the "back-bone" of geopark. The paper presents situation in the Polish landscape parks with regard of this requirement by the end of the year 2008. At that time the number ofgeoconservation objects selected and categorized in 75 of those parks reached 551 (Fig. 3). Table 1 shows the typology of geological sites in relation to their importance for the Earth sciences The objects of the category A are the most valuable for geology whereas the remaining ones are mainly ofgeomorphological (B) and hydrological (C) value. Tables 2, 3 and 4 show the current state of conservation of geological sites in Polish landscape parks. In that presentation the area of Poland was divided into two parts with the line of extent of the Warta Glaciation as the boundary (Fig. 2). The Pleistocene deposits predominate north of that boundary whereas rocks of older stratigraphic units crop out at the surface south of it.

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