The Park Authority receives 80% of its funding as a direct grant from the government. The Park Authority Committee consists of members from parish and county councils, and six appointed by the Secretary of State. The work is carried out by 80 staff including rangers, volunteers and a team of estate workers who carry out a wide range of tasks including maintaining the many miles of rights of way, hedge laying, fencing, swaling, walling, invasive weed control and habitat management on National Park Authority land. There are ongoing debates between the authority and farmers over the biological monitoring of SSSIs, showing the need for a controlled regime of grazing and burning; farmers claim that these regimes are not practical or effective in the long term.