Criteria
Article type: Article documents an empirical investigation. This
excludes reviews. Article is peer reviewed and in English.
Question: Article examines how vertebrate or invertebrate
herbivory affects or responds (in terms of forage selection) to plant
traits.
Subjects: Include one or more herbivore/s and plant trait/s and
be within a grassland/grassy woodland ecosystem or on a plant species
which occurs in these ecosystems.
Study design and treatments: Article included a no herbivory
control treatment, either through herbivore exclusion, herbivore
addition or natural herbivory gradients which included areas of no
herbivory.
Excluded studies: Articles reporting on simulated grazing.
Articles with only categorical traits. Articles which focussed on plant
species which are crops. Articles which artificially modified plant
traits and measured herbivore response (e.g., application of silica onto
plants).
Rules for multiple treatments or time periods: Where articles
report results from over multiple time periods, the most recent
comparison was recorded. Where articles report results from multiple
grazing intensities only difference between the control and highest
grazing intensity were used.