EN
First floristical information from the Lednicki Landscape Park (LLP) was given by Pfuhl (1898, 1899) and Bock (1908). Next, after nearly hundred years a provisional register of vascular plants was compiled by Jackowiak & Tobolski (1993). Some information on plants we can also find in two works (Dąmbska 1971, Kowalewski and Wiśniewski 1994). The plant communities of Lednica Lake were described by Podolski (1991). The aim of this work is to present the complete species register of the flora of vascular plants of the earthworks in the Lednicki Landscape Park and its buffer zone as well as the results of a statistical analysis. The floristical studies were carried out between 1992-1994 and in 1996 and included 4 earthworks situated in the LLP and its buffer zone (Ostrów Lednicki, Ledniczka, Moraczewo and Imiołki) and one placed next to the LLP border in Łubowo (Fig. 1.). The flora of vascular plants of the earthworks in the LLP comprises 283 species which enter into the composition of 177 species, 57 families and 4 classes (Table J). Most of the species belong to the Angiospermae (Magnoliopsida and Liliopsida classes). The flora of the earthworks constitutes half a number of species composition of the whole flora in the LLP. Abounding in species (and also genera) are Asteraceae (41 species, 26 genera) and Poaceae (29 species, 18 genera) families. Nine the most aboundant in species families compose 58,5% of the flora. The largest number of species occured on Ostrów Lednicki (197). It is connected with the size of the island and its habitat diversity (xerothermophilous grassland, mesophilous thickets, meadow, place near a cottage, reedy area etc.). The flora of the other earthworks comprises respectively: Moraczewo (173 species), Imiołki (124), Łubowo (87) and Ledniczka (82). The largest group constitute the species occurring only on one earthwork. On the whole there are 111 species (i.e. 39,2% o f all the species). Only in two objects there were recorded 75 species (26,5%), in three objects — 52 (18,4%) and in four objects — 23 (8,1%). The lowest is the number of species occuring on all the earthworks studied, only 22 (7,8%). These are mainly species o f native origin o f an apophytic character (among others, Urtica dioica, Sambucus nigra, Hypericum perforatum, Rosa canina) and two species from a group o f older newcomers (Ballota nigra and relict of cultivations — Malva alcea). Among the groups of Raunkiaer's classification (Fig. 2., Table 5) dominante hemicryptophytes which make over 46% (131 species). Very considerable is also the occurrence of annual plants (24,4%). In the group of phanerophytes the woody forms dominante over the shrubby ones. In the geographico-historical composition of the earthworks1 flora in the LLP (Fig. 3, Table 6) the species of native origin (81,6%) outnumber the foreign ones (18,4%). Among spontaneophytes there are dominanting those, which show tendencies to the permanent occupation of anthropogenic habitats. There are over 73% of them. In the group of anthropophytes a great participation have archaeophytes — 12,7% of all the flora. Such a high percentage of archaeophytes one can connect with former, lasting mamy ages colonization, on this area. The number of younger newcomers (kenophytes) and cultivated species abandoning arable lands (ergasiophytes) is comparatively small (5,6%). Generally apophytes and anthropophytes constitute 91,5% of the flora (259 species). Among socio-ecological groups dominante species o f fertile deciduous woods and shrub communities. There is also a large number of meadow plants and species from xerothermophilous, perennial ruderal communities. In the earthworks’ flora in the LLP there have been recorded 4 species which are partly protected in Poland (Ribes nigrum, Helichrysum arenarium, Primula veris, Viburnum opulus) and 5 threatened in Wielkopolska (Conium maculatum, Trisetum flavescens, Populus nigra, Teucrium scordium, Acer campestre), The floristical studies carried out on the earthworks enriched the flora of the Park by 33 species (at present it has 561 taxa). From the relicts of primaeval and mediaeval cultivations occurs Malva alcea recorded in the Park except for the earthworks only in the wayside ditches and on the roadsides near Dziekanowice.