| || || Marine algae -- Fiji -- Suva Lagoon -- Classification|
| || || A floristic and taxonomic study of the benthic intertidal and subtidal marine algae of the Suva Lagoon and Reef, Fiji |
Author: N'Yeurt, Antoine de Ramon.
Institution: University of the South Pacific.
Subject: Marine algae -- Fiji -- Suva Lagoon -- Classification, Marine algae -- Fiji -- Suva Reef -- Classification
Call No.: Pac QK 570 .2 .N88 1998
Copyright:This thesis may be copied without the authors written permission.
Abstract: This thesis presents a survey of the marine benthic algae of the Suva Lagoon and Reef, a major ecosystem fringing one of the largest and most rapidly expanding urban centres in the South Pacific. The introductory sections examine previous work on the algal flora of the Fiji Islands, and give a brief geographic and physiographic summary of the Suva area with a description of the study sites. The main body of the thesis consists of a detailed taxonomic analysis of the benthic algal flora of the Suva Lagoon and Reef, as represented in herbarium and field collections. Original illustrations and a comprehensive literature survey are given for most species covered. A total of 229 taxa are listed, comprising 7 Cyanophyceae, 71 Chlorophyceae, 24 Phaeophyceae and 127 Rhodophyceae. Of these, 6 represent new and undescribed species and 70 are new records for the Fijian flora. The Discussion examines the taxonomic results of this study, and compares the Suva flora with the greater Fijian flora with special reference to the biogeographic situation of the Suva Lagoon and Reef area, including possible effects of adjacent urban and industrial centres on the composition of the flora. The inner area and shores of the Suva Lagoon and Suva Harbour were found to be quite rich in short-lived bioindicator species, but notably impoverished in long-lived algal species, and this was possibly linked to the high level of freshwater and organic effluent input into the bay. On the other hand, the outer reef platform and reef wall east of the harbour and passes present a relatively high diversity of long-lived species, including localised concentrations of unique or rare taxa, which indicate relatively pristine conditions and a diversity of microhabitats. The high frequency of international shipping into Suva Harbour could possibly be linked to the introduction and spread of some algal species not usually found in other Fijian localities. The importance of regulating the negative effects of increasing urbanisation and industrialisation on the Suva Reef is stressed, and the algal flora is biogeographically compared with some other neighbouring Pacific floras.