[6] The flush and spring fen area should be protected from potential risk of commercial water abstraction which would deplete the aquifer, and from agricultural fertiliser or landfill pollution.

All of these would disrupt the chemical balance in the aquifer and consequently in the soil, and that in turn would encourage rank grasses, and cause depletion of specialised fen plants.

Moderate trampling may break down leaf litter and create scattered areas of bare soil which would encourage bryophytes and some invertebrates.

To prevent build-up of rank grasses, dead vegetation and scrub, light annual grazing and trampling by cattle is recommended.

The aim is to "keep a relatively open sward without causing excessive poaching" and a varied habitat, including perhaps a controlled amount of scrub.

The 3.1179 hectares (0.03118 km2; 0.01204 sq mi) "broadleaved, mixed and yew woodland (lowland)" area was judged to be in favourable condition, having "good ground flora and regeneration."

The 5.763 hectares (0.0576 km2; 0.0223 sq mi) lowland fen, marsh and swamp area was judged "unfavourable and recovering," although no details were given.

[8][9] North Yorkshire County Council confirmed that Mar Field Fen SSSI would be considered in any future local request for planning permission that might affect the site.

[10] North Yorkshire County Council's Minerals and Waste Joint Plan 2016–2030 took Mar Field Fen SSSI into consideration regarding possible effects of all potential local requirements for agricultural and commercial exploitation of land in the area.