| || || Anthropogenic factors |
| || || Freshwater fish of the Melanesian region
Author(s): Boseto, D.
Notes: Melanesian Geo, 12-13, 1
Held at: USP
ASFA Subject(s): Anthropogenic factors, Environmental legislation, Resource management, Biological surveys, Introduced species, Endemic species, Ecosystem disturbance, Freshwater fish, Inland water environment, Freshwater ecology
Abstract: Freshwater resources are under threat around the globe from anthropogenic influences. The island nations of Melanesia are particularly vulnerable due to their limited freshwater resources, burgeoning populations and increasing mining and logging activities. Data suggest 20-35% of freshwater fishes are vulnerable, endangered or extinct, mostly because of habitat alteration and the introduction of exotic species. This fauna is an important source of protein for rural Pacific islanders, especially those living far inland, but there has been little study of the ecology and possible utilization of endemic species. Low numbers of recorded freshwater species in some countries can be attributed to a lack of research, leading to an absence of statutory regulations and enforcement measures to protect local fauna. Biodiversity surveys and cooperative resource management plans are urgently needed to protect aquatic environments.
Control No.: 00013819.nul
| || || Species diversity and habitat selection in opisthobranch gastropods on two adjacent reefs in Fiji
Author(s): Brodie, G.D., Brodie, J.E.
Notes: South Pacific Journal of Natural Science, 14, 97-113
Held at: USP
ASFA Subject(s): Biological surveys, Comparative studies, Anthropogenic factors, Community composition, Habitat selection, Species diversity, Coral reefs, Marine molluscs
Abstract: A four year survey of marine opisthobranch molluscs was undertaken in Suva, Fiji, to determine diversity and species richness in a tropical environment. One hundred and forty-four species were found on two adjacent reefs but only thirteen species were found on both reefs. The reefs differed in physical and biological nature and thus presented quite contrasting biotypes. Both reefs were subject to anthropogenic influences including polluted river run-off, sewage pollution, industrial wastes and intensive gleaning for food. Diversity in the opisthobranch fauna, however, was very high on both reefs as measured by common diversity indices. Comparison with a nudibranch study conducted in temperate waters revealed distinct differences in the number of individuals found for each species recorded.
Control No.: 00013851.nul
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