What is the effectiveness of using conspecific or heterospecific acoustic playbacks for the attraction of animals for wildlife management? A systematic review protocol

Table 4 Critical appraisal criteria

Factors under consideration	Low bias	Medium bias	High bias
Study type	Experimental		Observational
Study design	BACI	CI	BA
Study plots	Homogeneous in size and habitat	Homogeneous in size or habitat	Not homogeneous in size or habitat
Replication	> 3 replicates	2–3 replicates	< 2 replicates
Duration of study^a	> 1 year; multiple breeding seasons	< 1 year; longer than one breeding season	One breeding season
Account for confounding variables	Yes	Somewhat	No
Methodology^b
Statistical analyses^b

^aFor studies in which the goal is long-term establishment or breeding and not capture of the animal
^bThese will be assessed individually based on each study’s specific question and design