• Medinilla waterhousei

The Tagimaucia is a liana (woody vine), that forms thickets high up in the canopy, much similar to the growth of the duva, Derris trifoliata.
Also known as: Tagimaucia
Local Names: Tagimaucia, Tekitaki vuina

Description

The Tagimaucia is a liana (woody vine), that forms thickets high up in the canopy, much similar to the growth of the duva, Derris trifoliata. The inflorescences occur on the stems or in association with the leaves. The flowers are very striking with white petals and filaments; rich purple anthers; yellow basal lobes, and inflorescence branches and bracts that are scarlet or deep red in colour. The leaves of the Tagimaucia grow in a similar manner to that of Mikania micrantha (mile-a-minute or wabosucu) in that the leaves begin from the start of the stem.

Distribution

This beautiful endemic flowering vine has a limited distribution, restricted to the higher parts of Taveuni, particularly within the forests on the slopes leading up to Lake Tagimaucia and the upper slopes of Mt. Seatura, Bua, Vanua Levu.

Habitat Ecology and Behaviour

The Tagimaucia occurs within dense forest from an elevation of 660-1241m. It creeps along the canopy of the forest, with its flowers hanging down when in bloom. Unlike other vines such as the invasive Merremia peltata, the Tagimoucia neither smothers its host plant nor is it parasitic. The Tagimaucia is not a threat to the survival of the host, only using it for support.

The Tagimaucia appears to be in flower for much of the year; those who frequent the trail to Lake Tagimaucia suggest that it is in full bloom in the last few months of the year.

Threats

Its restricted range to the forests of Taveuni and Mt Seatura, Bua is a threat to the survival of this endemic plant. This restricted range and therefore small populations mean that natural disasters and logging activities that destroy the forest and habitat, can affect the survival of the Tagimaucia by upsetting its phenology and regeneration. Frequent human visitations into the forest to pick the flowers are also a threat to the plant as they bring along with them seeds of invasive plants hitchhiking on their shoes and clothes. These invasive plants could out-compete the host species of the Tagimaucia. The picking of the flowers also means that they do not have a chance to develop further for regeneration.

Conservation Status

Despite its popularity, the status of the population and the ecology of the Tagimaucia are poorly known. Without basic information such as the extent of its distribution on Taveuni and Mt Seatura, and its main pollinators, we cannot for certain determine the conservation status of this endemic flower.

Remarks and Cultural Significance

Despite its popularity, the status of the population and the ecology of the Tagimaucia are poorly known. Without basic information such as the extent of its distribution on Taveuni and Mt Seatura, and its main pollinators, we cannot for certain determine the conservation status of this endemic flower.

References

Smith (1985);
Tuiwawa, M. (personal communication).

Front Page Photo: Jorg Kretzschmar
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Located in the Province of Cakaudrove, the island of Taveuni is Fiji’s 3rd largest island. Since the 1980s, the National Trust and the Fiji Department of Forests have been advocating for the merger of the Ravilevu Nature Reserve, Taveuni Forest Reserve and the Bouma National Heritage Park to form the Taveuni National Park. In 1993 the Fiji Department of Environment proposed the ‘Integrated Development Plan for Taveuni’ supporting this combination to better promote the wilderness and cultural features of Taveuni to harness Taveuni’s tourism market to its full potential. The Fiji Department of Forests, National Protected Areas Committee, Cakaudrove Provincial Council and NatureFiji-MareqetiViti, with support from the Critical Ecosystems Partnership Fund are revitalising efforts to bring Taveuni's three current protected areas into one Taveuni National Park: 1. Taveuni Forest Reserve (FR). Declared in 1914. Size: 11, 160 HA 2. Ravilevu Nature Reserve (NR). Declared in 1959. Size: 4, 108 HA 3. Bouma National Heritage Park (BNHP). Established by covenant in 1990. 1, 417 HA. TAVEUNI’S WILDLIFE AND LANDSCAPE Much of Fiji’s land and forest has now been impacted and modified by deforestation, commercial and subsistence agriculture, plantation timber production and/or invasive alien species. We must also remember the historic impacts of the first human settlement that resulted, for example, in the extinction of many species and conversion of dry forests to grasslands. Not only has Taveuni retained significant forest and wetland ecosystems across a full altitudinal range (ridge to reef), but also it has not been severely impacted by invasive species, in particular the mongoose. The absence of the mongoose from Fiji’s third largest island has resulted in the retention not only of Taveuni’s endemic fauna species but also Fijian endemics that have been extirpated or are highly threatened on Viti Levu and Vanua Levu. SPECIAL LANDSCAPES ON TAVEUNI Taveuni’s outstanding landscape qualities are derived mainly from its tropical forest cover. From all points around the Taveuni coastline, there are views of the undisturbed, densely forested uplands. Frequently cloud and mist-capped, the rugged central range dominates the landscape with characteristic emergent volcanic cones. From the peaks of the central range descend the long symmetry of old lava flows covered with dense rainforest. Taveuni is one of the very few islands where the scale of negative land use impacts has been limited. But current trends of widespread soil degradation and encroachment into the reserves indeicate taht this is changing for the worse. The thriving agricultural industry of Taveuni can attribute its success to the Taveuni Forest Reserve which was established to ensure unlimited water supply and free ecosystem services to the people of Taveuni. While the Taveuni FR currently provides little monetary benefit to landowners, combined with the Ravilevu NR and Bouma National Heritage Park, the Taveuni National Park will build a strong imperative for ecotourism development. THE PROJECT Not until 2009 were landowners informed about plans which had been around for 30 years on possible Protected Areas development, and the potential of Taveuni's forests for conservation. If there is one conspicuous lesson of the lead up work of the Sovi Basin Protected Area project, it was that there was no real progress until the landowners and the Fijian administration took up ownership of the process. Getting the landowners involved in the PA discussions is the main objective of this project.
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