Outflow from the marsh areas of 'Lasy Rychtalskie' Forest Promotional Complex

Field research carried out on marsh areas of "Lasy Rychtalskie" Forest Promotional Complex indicated that retention potential of local marshlands is particularly high. Runoff is relatively low (ca 4% of annual rainfall) and occurs in winter half−year and in May. It has been assumed that essential changes on marshland area ecosystems will occur when the average ground water levels come down by about 50% of the present state. It has been estimated that it will happen after about 100 years