Department’s document sets out land projects which must be screened
But any proposed activity which could affect a European site (such as a SAC or SPA), an NHA or nature reserve, or a national monument, must be screened. The guidance document gives examples where screening is required — such as removing a hedgerow between two fields whose area (including the hedgerows) exceeds five hectares, or if a field boundary to be removed exceeds 500 metres.
To determine if screening is needed for sub-threshold works which may have a significant effect on the environment, matters to consider include relative abundance of landscape features, species diversity of hedgerows being removed, and proximity to designated areas.