title: Field-based effects measures.
authors.forename: Lorraine
authors.initials: L
authors.lastname: Maltby
authors.forename: G Allen
authors.initials: GA
authors.lastname: Burton
mesh_terms: D000818:Animals; D003247:Conservation of Natural Resources / Q000379:methods*; D017753:Ecosystem; D005618:Fresh Water; D007448:Invertebrates; D011157:Population Dynamics