Site name and code: Grądy w Dolinie Odry PLH020017
Site of Community Importance since 2009
Area: 8756,34 ha
Administrative location: Opole voivodeship: Brzeg county – municipality of Lubsza, Lower Silesia voivodeship: Oława county – city of Oława, municipality of Oława, municipality of Jelcz-Laskowice, Wrocław county – municipality of Siechnice, municipality of Czernica, city of Wrocław
The site is important for forest and non-forest habitats preservation, especially habitats of a hydrogenic character and related valuable animal species protected within the site. It stretches along the Odra valley, including a few forest complexes of the section between Oława and Wrocław. The area of the refugium is located within the Ice-marginal valley of Wrocław, with adjacent areas of vast plains and valleys of the Odra tributaries. The valleys of numerous streams, old riverbeds, swamps and ponds residues shape the landscape of the site. The site is covered with forest communities creating a mosaic of many farmlands, meadows and pastures.
The area is located within the I° ordering and lower, Odra river drainage basins: the Widawa, Smortawa and Oława. The larger tributaries of the Odra flowing in the area of the refugium are Oława with Zielona, a tributary of Kotowice, Otocznica, Smortawa with Bystrzyce Canal, Młynówka Jelecka and Piskorna. In the area of the refugium there are also many smaller watercourses and ditches forming a dense network. A large part of the site is situated within a range of periodic spates, occurring in summer, from July to August.
Within the surrounding of Kotowice there are bodies of water: Panieńsie Lake, Dziewicze Lake, the Bobrze Czarna and Łacha River, while around Gajków there is the Bajkał after-exploitation water reservoir, the one like in Ratowice.
The subjects of protection
2330 Inland dunes with open Corynephorus and Agrostis grasslands
3150 Natural eutrophic lakes with Magnopotamion or Hydrocharition – type vegetation
6120 Xeric sand calcareous grasslands
6210 Semi-natural dry grasslands and scrubland facies on calcareous substrates (Festuco-Brometalia)
6410 Molinia meadows on calcareous, peaty or clayey-silt-laden soils (Molinion caeruleae)
6430 Hydrophilous tall herb fringe communities of plains and of the montane to alpine levels
6440 Alluvial meadows of river valleys of the Cnidion dubii
6510 Lowland hay meadows (Alopecurus pratensis, Sanguisorba officinalis)
7230 Alkaline fens
9170 Galio-Carpinetum oak-hornbeam forests
9190 Old acidophilous oak woods with Quercus robur on sandy plains
91E0 Alluvial forests with Alnus glutinosa and Fraxinus excelsior (Alno-Padion, Alnion incanae, Salicion albae)
91F0 Riparian mixed forests of Quercus robur, Ulmus laevis and Ulmus minor, Fraxinus excelsior or Fraxinus angustifolia, along the great rivers (Ulmenion minoris)
A description of the subjects of protection within the site
The site is important for forest and non-forest habitats preservation, especially habitats of a hydrogenic character and related valuable animal species protected within the site and the associated special protection area for birds SPA Grądy Odrzańskie. Frequently occurring in the area species of fish and insects are particularly noteworthy.
….. four nature reserves are located within the refugium: Łacha Jelcz Nature Reserve, Kanigóra Nature Reserve, Zwierzyniec Nature Reserve, Grodzisko Ryczyńskie Nature Reserve.
….. Grodzisko Ryczyńskie Nature Reserve, in addition to the venerable oaks, it also protects Slavic burgwall founded by the Silesians before the year 1000. In the vicinity of the reserve, the wooden boat has been found, it was built of felled trees wood in autumn the year 983!