Table 3. Comparison of estimated effort and costs among three acoustic survey methods used for one season (40-nights) of sampling in Everglades National Park, FL, USA.

Effort is reported as an estimated number of person-hours. Labor and analysis costs were derived from these estimates of effort.

		Mobile surveys	Stationary Surveys
		Mobile transect	Single strategica	Spatially replicated
		One 64 km transect driven every 5 nights; 10 transects total	Three sites sampled for 40 nights simultaneously	Twelve sites sampled for 20 nights each; 6 sites at a time
Effort (hours)	Field work	45 h	50 h	80 h
	Analysis	15 h	30 h	60 h
	Total effort	60 h	80 h	140 h
Cost (usd)	Equipmentb	$3,100	$8,500	$12,300
	Vehiclec	$450	$370	$480
	Field workd	$540	$600	$960
	Analysisd	$180	$360	$720
	Total cost	$4,270	$9,830	$15,460
	Cost/Survey nighte	$117	$33	$79
Summary	Total effort	Low	Mid	High
	Total cost	Low	Mid	High
	Cost/Survey night	High	Low	Mid

Notes.

^aEstimates are based on all three stationary detector locations (mangroves, prairies, pinelands).

^bEquipment cost includes detectors, microphones and acoustic analysis software.

^cVehicle cost was estimated based on rate of $0.45/mile.

^dField work and analysis time costs were based on a technician pay rate of $12.00/hour.

^eCalculation excludes equipment costs, which do not change with number of survey nights.