Rozwarowo Marshes (913)
Poland, Europe
Site overview
KBA status: confirmed
Global KBA criteria: A1d
Year of last assessment: 2010
National site name: Bagna Rozwarowskie
Central coordinates: Latitude: 53.8667, Longitude: 14.7500
System: freshwater, terrestrial
Elevation (m): 20 to 20
Area of KBA (km2): 42.64004
Protected area coverage (%): 99.61
KBA classification: Global
Legacy site: Yes
Site details
Site description: The marshy valley of the Grzybnica and Wo³czenica rivers, containing numerous channels. There are considerable areas of fen with large stretches covered with reedbeds Phragmites and wet, flooded meadows; bushes of alder Alnus are abundant. Land-uses include cattle-farming.
Rationale for qualifying as KBA: This site qualifies as a Key Biodiversity Area of international significance that meets the thresholds for at least one criterion described in the Global Standard for the Identification of KBAs.
Additional biodiversity: A total of 151 species have been recorded, 107 as breeders.
Habitats
Land use: agriculture (80%) | hunting (10%) | not utilised (10%)
| IUCN Habitat | Coverage % | Habitat detail |
|---|---|---|
| Forest | 19 | |
| Other | 1 | |
| Grassland | 22 | |
| Wetlands(Inland) | 30 | |
| Artificial - Terrestrial | 28 |
Threats
Summary of threats to biodiversity at KBA: Effluent from cattle-farming is a threat. In 1993 part of the marshes were altered by reedbed planting, damaging the habitat for breeding Acrocephalus paludicola (immediately before the damage there were 40-60 singing males). New roads are making access to the marshes easier for anglers and poachers.
| Threat level 1 | Threat level 2 | Threat level 3 | Timing |
|---|---|---|---|
| Natural system modifications | Dams & water management/use | Dams (size unknown) | Ongoing |
| Agriculture & aquaculture | Annual & perennial non-timber crops | Small-holder farming | Ongoing |
| Biological resource use | Gathering terrestrial plants | Unintentional effects (species being assessed is not the target) | Ongoing |
| Agriculture & aquaculture | Marine & freshwater aquaculture | Subsistence/artisinal aquaculture | Ongoing |
| Invasive & other problematic species, genes & diseases | Invasive non-native/alien species/diseases | Unspecified species | Ongoing |
| Natural system modifications | Other ecosystem modifications | Only in the past and unlikely to return | |
| Energy production & mining | Renewable energy | Ongoing |