The vicinity of Duży Ług Lake features small tracts of fresh pine forest. The undergrowth boasts junipers and European mountain ashes, while the ground cover includes the Blue Whortleberries, Sheep’s Fescues and Rough Small Reeds, as well as the grass with the Grey hair-grass, Morison’s Spurreys, Goldmoss Stonecrops, Iceland Mosses and Cup Lichens. The fields located south of Duży Ług Lake are a habitat to the Northern Wheatears and Tawny Pipits.

The marshy meadows boast rare non-migratory butterflies, strongly associated with the given territory. Their presence testifies the durability and invariability of biotope. The local lake is the habitat of such species as the Violet Coppers, Scarce Large Blues, Dusky Large Blues and pericallia matronula. The nearby forests also feature rare butterfly species, including the Lesser Purple Emperors, Purple Emperors and Caloptilia suberinella (the only habitat in Poland).