Inluded here are the Fiji Islands (such as Viti Levu and Vanua Levu), Samoa Islands, Tonga Islands, Horn Islands, Rotuma Islands, Uvea Island and Niue Island.

Although most of the open forests have been destroyed their original composition can be determined from remnants on leached soil and on the drier, leeward side of the larger islands. They are xerophytic in character and variously composed of low trees such as Acacia richii, Alphitonia zyzyphoides, Dodonaea vicosa and the endemic Fagraea gracilipes (Loganiaceae), together with the parasitic sandalwood (Santalum yasi), Casuarina equisetifolia and various Pandanus species. The ground layer is dominated by Dicranopteris linearis, Lycopodium cernuum and Pteridium esculentum. However, most of the Fijian vegetation that approximates to savanna today is on the so-called talasiga (sunburnt) land. The term applies to fire-modified ecosystems, and in addition to some of the above-mentioned species, there are various non-indigenous species such as Sporobolus indicus. This type of vegetation now covers nearly a third of Viti Levu and Vanua Levu, and relates to the fact that the original Fijians frequently used fire as part of their shifting cultivation technique. Other talasiga species include the native reed Miscanthus floridulus and the introduced African pyrophyte Pennisetum polystachyon (mission grass).

References

Ash, J. 1992. Vegetation Ecology of Fiji: Past, Present, and Future Perspectives. Pacific Sciences, 2: 111-127.

Balgooy, Van. M. M. J. 1960. Preliminary plant geographical analysis of the Pacific. Blumea, 10: 385-430.

Balgooy, Van. M. M. J. 1969. A study of the diversity of island floras. Blumea, 17: 139-178.

Campbell, D. G. & Hammond, H. D. 1989. Floristic Inventory of Tropical Countries. The New York Botanical Garden.

Gardger, R. O. 1997. New and noteworthy plants from Fiji. New Zealand Journal of Botany, 35: 487-492.

Garnock-Jones, P. J. 1978. Plant communities on Lakeba and southern Vanua Balavu, Lau group, Fiji. Royal Society of New Zealand Bulletin, 17: 95-117.

Gillison, A. M. Tropical Savannas of Australia and Southwest Pacific. In: Ecosystems of the World 13 - Tropical Savannas. Ed. F. Bourliere. Elsevier Scientific Publishing Company.

Krupnick, G. A. & Kress, W. J. 2003. Hotspots and ecoregions: a test of the conservation priorities using taxonomic data. Biodiversity and Conservation, 12: 2237-2253.

Mueller-Dombois, D. & Fosberg, F. R. 1998. Vegetation of the Tropical Pacific Islands. Springer.

Sohmer, S. H. 1990. Elements of Pacific phytodiversity. In: The Plant Diversity of Malesia. Proceedings of the Flora Malesiana Symposium commemorating Professor Dr. C. G. G. J. van Steenis Leiden, August 1989. Eds. P. Baas, K. Kalkman and R. Geesink. Kluwer Academic Publishers.

Smith, A. C. 1951. The Vegetation and Flora of Fiji. Scientific Monthly, 73: 3-15.

Smith, A. C. 1954. Botanical studies in Fiji. Smithsonian Institute Report for 1954, 305-315.

Smith, A. C. 1955. Phanerogam genera with distributions terminating in Fiji. Journal of the Arnold Arboretum, 36: 273-292.

Smith, A. C. 1979. Flora Vitiensis Nova. A New Flora of Fiji. Vol. 1. Lawai, Kauai, Hawaii.

Whistler, W. A. 1980. The vegetation of Eastern Samoa. Allertonia, 2: 45-174.

Whistler, W. A. 1983. Vegetation and flora of the Aleipata Islands, Western Tonga. Pacific Science, 37: 227-249.

Whistler, W. A. 1983. Vegetation of Samoa and Tonga. Pacific Science, 46: 159-178.