Editing Geography of Guam (section)

== Environment ==
[[File:Guam2021OSM.png|thumb|An enlargeable, detailed map of Guam]]
{{main|Marianas tropical dry forests}}
{{further|Invasive species in Guam|List of birds of Guam|List of mammals of Guam|List of Superfund sites in Guam}}
The rapid proliferation of the [[brown tree snake]] (''Boiga irregularis''), an [[Introduced species|exotic species]], caused the [[local extinction]] of the native [[bird]] population, such as the [[Guam rail]] and [[Guam kingfisher]]. The island also supports feral populations of introduced [[Philippine deer]] (''Rusa marianna''), [[Wild boar#Feral pigs|pigs]] (''Sus scrofa''), and [[carabao]] (''Bubalus bubalis carabanesis'').

Extraction of natural resources for economic gain is based around the sea. This includes [[commercial fishing]], mostly servicing and unloading of [[Longline fishing|longline]] fleets and commercial vessels. There is [[recreational fishing]] of Indo-Pacific blue marlin (''[[Makaira]] [[Makaira mazara|mazara]]''), [[wahoo]] (''Acanthocybium solandri''), [[mahi-mahi]] (''Coryphaena hippurus''), [[yellowfin tuna]] (''Thunnus albacares''), and deepwater reef fish. Tourism from [[Japan]] in particular, but increasingly from [[China]] and [[South Korea]], largely derives from an attractive tropical climate and amenities.

A 2012 estimate was that 16.67% of the land area was being used for permanent crops, while only 1.85% was considered [[arable land]] suitable for plowing, planting, and reaping. 2&nbsp;km<sup>2</sup> was irrigated.