or activities which do not harm the object: maintenance work on existing land improvement systems and restoration of the water regime; development of biotic communities in adherence to the objective of protection; gathering of berries, fungi and other forest by-products; hunting activities; fishing activities; erection of roads, utility works or non-production construction works for servicing an immovable located within the protected area, or the protected area, and maintenance of existing construction works; activities necessary for guaranteeing the preservation of the characteristic features and species composition of semi-natural biotic communities, and activities for preservation of the living conditions of protected species; gathering of reed and seaweed. Limited management zone A limited management zone is a land or water area of a protected area where economic activities are permitted, taking account of the restrictions provided by this Act. Unless otherwise provided by the protection rules, the following shall be prohibited within a limited management zone: construction of new land improvement systems; altering the water levels and shorelines of bodies of water, and creation of new bodies of water, extraction of mineral resources and earth substances; design of pure stands and planting of energy forests; regeneration cutting; training of crowns of trees and bushes, and cutting of woody plants without the consent of the administrator of the protected area; use of biocides and plant protection products; erection of construction works, including temporary construction works, and altering the exterior structure of construction works located in a national park; hunting and fishing activities; driving motor vehicles, off-road vehicles or floating vessels, except for the performance of work necessary for the maintenance of line facilities, and for forestry work or agricultural work in profit yielding land; camping, building fires and organisation of public events in locations not intended for such purposes and unmarked by the administrator of the protected area; gathering of reed on unfrozen ground. An obligation to preserve the species and age diversity within biotic communities and a prohibition on haulage and transportation of timber out of the zone if the ground is not frozen may be established by the protection rules. Restrictions different than those provided by the Forest Act may be established by the protection rules with regard to the size and form of cutting areas and the composition of a forest within a limited management zone necessary for the preservation of a biotic community or protected species within the zone. See