They are obliged to protect the stock, perform stocking programmes, and provide physical protection and control. Some monitoring of fishing activity is effected through the police. It primarily fulfills a policy, planning, regulatory, and monitoring role for PAs except in the case of strict natural reserves, where it is the designated responsible management authority, according to the Law on Nature Protection. Within the Ministry is the Administration of Environment and below that the Department of Nature with primary responsibility for biodiversity and protected areas.