Rezerwat przyrody Bagno Iglickie: Protected Peatland and Glacial Wetland Geography in Poland

Bagno Iglickie is best known for its conservation of a post-lake peatland with rare and threatened plant communities, particularly lowland alkaline fens protected under European Union habitat law. The reserve preserves a gradient of habitats from the open central peatland through Sphagno, Alnetum alder swamp on the edges to spring-fed brown-moss meadows with Menyanthes trifoliata and Carex paniculata. It also stands out for its near-pristine hydrological condition despite a network of historical drainage ditches, and for hosting one of Poland's nationally endangered vascular plant species, ożanka nierównoząbkowa (Teucrium scorodonia), alongside regional rarities such as żłobik koralowy (Corallorrhiza trifida) and nerecznica grzebieniasta (Dryopteris cristata).

The natural value of the Bagno Iglickie peatland was first formally recognized during a State Forests inventory conducted between 2006 and 2007. Field ecologists working within the Resko Forest District noted that despite a system of drainage ditches, the basin had retained a near-pristine peatland character with high water levels and active peat formation. These findings became the basis for advocacy to protect the site as a nature reserve.

The formal protection process culminated on 12 December 2016, when the Regional Director for Environmental Protection in Szczecin issued an order establishing the area as the Bagno Iglickie Nature Reserve. The official entry into force was 26 December 2016, with the legal act published in the official journal of the West Pomeranian Voivodeship (Dz. Urz. Woj. Zach. z 2016 r. poz. 5022). From its establishment, the reserve has been managed under strict protection (ochrona ścisła), meaning that any active interference with the ecosystem is restricted.

An ongoing management focus has been hydrological monitoring, since the peatland's continued existence depends on maintaining the high water table that has so far resisted the legacy drainage network. Other management tasks have included boundary marking and guarding the reserve against disturbance from people collecting forest understory produce.

Bagno Iglickie occupies a flat, low-lying basin within the Równina Gryficka mesoregion, a glacially shaped lowland of northern West Pomerania. The protected area sits at about 53.85° N latitude and 15.47° E longitude, on terrain that originated as a glacial lake basin now in the process of terrestrialization.

The reserve's defining landform is the degraded former lake bed, whose edges were artificially drained, allowing peatlands to colonize the open water surface. This created a classic concentric pattern of peatland landforms: a flat, open central bog crossed by relict drainage ditches and old canals, a semi-open bog-marsh transition on the northeastern side, and a surrounding ring of wet alder swamp where peat meets mineral soils.

Surface water levels in the basin remain high despite the historical drainage infrastructure. Channels and ditches still cut across the bog, but they have not lowered the water table enough to interrupt peat formation. The result is a mosaic of saturated open peatland, spring-fed seepage zones, and wet swamp forest, with no pronounced relief beyond the gentle basin-and-rim topography typical of post-glacial wetlands in this part of Poland.

The ecological character of Bagno Iglickie is defined by post-lake peatland succession and the coexistence of multiple fens of high conservation value. The reserve's core habitats are open lowland alkaline fens of the młaka type, tall sedge communities dominated by Carex paniculata, and brown-moss carpets dominated by Sphagnum species, all of which qualify as protected habitat types under European Union nature law.

Around the open central peatland, a marginal belt of Sphagno squarrosi–Alnetum alder swamp encircles the basin, with Sphagnum squarrosum growing beneath alders and bog birch. The semi-open northeastern section carries a characteristic brown-moss community of the Menyantho trifoliatae–Sphagnetum teretis type, a transitional assemblage combining rare mosses, Menyanthes trifoliata, Potentilla palustris, Thelypteris palustris, and Ranunculus lingua.

A striking ecological feature is the dominance of peat-forming mosses. Approximately thirty percent of the former lake surface is covered by a continuous moss layer, with notable populations of Sphagnum teres, Sphagnum warnstorfii, Sphagnum palustre, and Sphagnum fimbriatum, complemented by brown mosses such as Chiloscyphus pallescens, Climacium dendroides, Plagiomnium elatum, and Brachythecium rivulare. Together, these communities confirm that the site remains an actively peat-forming wetland rather than a degraded remnant.

Although the available documentation for Bagno Iglickie focuses primarily on vegetation and habitat types, the reserve's ecological structure strongly suggests value for peatland fauna. The combination of open młaka fens, tall sedge beds, dead and dying alder and birch wood, and an undisturbed water table provides habitat for wetland birds, amphibians, and invertebrates typical of Polish lowland peatlands.

Recorded wildlife-relevant elements visible in the source material are largely botanical, but the structural features described: standing deadwood in the marginal swamp, extensive Sphagnum carpets, and minerotrophic seepage zones, are the kinds of microhabitats that support bog-specialist invertebrates and herpetofauna. Until more detailed faunal surveys are completed, wildlife character at Bagno Iglickie is best described as a typical West Pomeranian post-lake peatland fauna assemblage rather than a site with charismatic large mammals.

Bagno Iglickie is one of the more recently designated strictly protected nature reserves in West Pomerania, and its entire area falls under ochrona ścisła (strict protection). This status effectively prohibits extractive or disruptive uses, leaving hydrological monitoring, boundary marking, and prevention of forest-floor foraging as the principal management concerns.

From a conservation perspective, the reserve's most important role is the protection of habitat types that qualify under the European Union Habitats Directive, particularly lowland alkaline fens (młaki), Magnocaricion sedge beds, and brown-moss meadow communities. These habitats rank among the most threatened in lowland Europe due to long-term drainage and peat extraction, which makes even small, well-preserved fragments like Bagno Iglickie disproportionately valuable for regional biodiversity.

The reserve also functions as a refuge for plant species of clear conservation concern. Surveys have identified żłobik koralowy (Corallorrhiza trifida) and nerecznica grzebieniasta (Dryopteris cristata) as regionally threatened in West Pomerania, while ożanka nierównoząbkowa (Teucrium scorodonia) is documented as endangered at the national level in Poland. The site's still-incomplete inventory suggests that additional rare species may be discovered as access to the wettest areas improves.

Bagno Iglickie is one of the youngest strictly protected peatland reserves in West Pomerania, established in late December 2016 to preserve a near-pristine post-lake basin of about 46 hectares. Its central feature is a complex of EU-protected lowland alkaline fens, tall sedge beds, and brown-moss meadows framed by Sphagno–Alnetum alder swamp.

The reserve is notable for surviving in active peat-forming condition despite a visible network of drainage ditches, and for harboring regionally and nationally threatened vascular plant species. Combined with its difficult accessibility, which has preserved its character but slowed scientific inventory, Bagno Iglickie exemplifies the high ecological value of small, hydrologically intact peatland fragments in the Polish lowlands.

Bagno Iglickie is a strictly protected reserve under ochrona ścisła, and the available source material does not provide visitor-oriented seasonal guidance. From a purely ecological standpoint, the late spring to early summer period typically offers the most expressive view of West Pomeranian peatlands, when sedges, Menyanthes trifoliata, and other fen herbs are in bloom and brown-moss carpets are visibly saturated with water. Late summer and autumn may reveal fruit bodies of rare plants such as Corallorrhiza trifida, while winter visits to such peatlands are generally discouraged because access to soft, waterlogged ground becomes particularly hazardous.