id	keyword
alces-134	moose
alces-134	distance
alces-134	detection
alces-134	et al
alces-134	transect
alces-134	survey
alces-134	line
alces-134	sampling
alces-134	density
alces-134	buckland
alces-134	group
alces-134	observer
alces-134	abundance
alces-134	wildlife
alces-134	estimating
alces-134	alces
alces-134	kernel
alces-134	snow
alces-134	data
alces-134	function
alces-134	estimate