In "Linguistic Ecology, " Peter Muhlhausler examines the transformation of the Pacific language region under the impact of colonialization, Westernization and modernization. By focusing on the linguistic and sociohistorical changes of the past 200 years, he brings a new dimension to the study of Pacific linguistics, which up until now has been dominated by questions of historical reconstruction and language typology. Muhlhausler focuses on the cultural and historical forces which drive language change, looking at how language ecologies have functioned in the past to sustain language diversity and discussing what happens when these ecologies are disrupted.