What kind of shoes would work for fieldwork in Guam?

What kind of boots/shoes would work for the fieldwork out here in Guam? The karst is terrible from what I hear. If anyone has had any experience in working in tropical conditions and karst. What shoes did you use or would recommend? I normally wear Danners but here in Guam I would sweat like no other. Preferably, a women's shoe/boot but I can try out men's. I'm not picky just don't want my feet to get torn up. Thanks in advance!