Table 1 Keywords and qualifiers to be used in literature search

1 Slurry storage

Slurr* stor*

Water qualit*

Animal waste lagoon*

Water pollut*

Animal waste stor*

Control of pollut*

Slurr* lagoon*

Nitrat* OR Nitrogen

Slurr* tank*

Phosph*

Dairy lagoon*

Nutrient loss*

2 Woodland

Afforest*

Bacter*

(Wooded OR woodland*) AND (agricult* OR arable OR grass*)

Fecal OR faecal

Pesticid*

(Shelterbelt* OR windbreak* OR hedge*)

Sediment*

Spray drift and tree*

River* OR Stream*

3 Buffer

Buffer AND (strip* OR zone*)

OR Catchment*

Riparian AND (buffer* OR zone* OR filter* Or strip*

Leak* OR Seap* OR Spill*

Ground* water*

Filter strip*

Run off OR runoff

Vegetat* AND( buffer* OR barrier*)

Directive* OR Europe*

4 Loosening

“Subsoiling”

Infiltrat*

Compacted Soil/Controlled trafficking

Loosen* Compact*

Leach*

Deep ripping

Water AND (Erosion OR Erod*)

Wheel* AND compact* AND grass*

Eutrophication

Traffic* AND compact* AND grass*

Soil compact* AND grass*

Controlled traffic* AND grass*

5 Cover Crop/Catch Crop

“Cover crop” OR “Cover crops” OR “Covercrop” OR “Covercrops”

“Catch crop” OR “Catch crops” OR “Catchcrop” OR “Catchcrops”