Photo TTaylor via Wikipedia
To answer that riddle you need to first review Monday’s Catch of the Day.
It describes how communities in Texas and elsewhere still import Asian carp to clear an invasive plant out of vegetation-choked waterways. The carp are sterile to avoid substituting one invasive headache for another.
(The carp threatening the Great Lakes are definitely not sterile and the longterm concern is that they will proliferate and dramatically change the native ecosystem.)
Where do the goats fit in?
A reader notes a similar land-based phenomenon on New York’s Staten Island. Authorities there are importing 20 Anglo-Nubian goats to eat up the invasive phragmites choking the native vegetation in two-acres of wetlands, according to silive.com. It’s just a 6-week gig for the goats.
Phragmites are also an enormous headache in Great Lakes wetlands, as detailed elsewhere in Echo.
Is there a cost/benefit calculation to be made here as well?