Ten caves in the makatea limestone of Mangaia, Cook Islands were explored and mapped, totalling over 3.7 km of passage. Of these, there was an apparent grouping by elevation that corresponds with previously described sea-level terraces in the makatea. Four caves have major level sections 10-20 m above sea-level, corresponding with a 14.5 m Pleistocene terrace. The high dimensions of these caves indicate downcutting during
The recorded flora of the raised phosphatic limestone island of Nauru in the equatorial Pacific Ocean consists of approximately 493 species. Only 59 are possibly indigenous, none of which are endemic. The balance is composed of ornamentals, weedy exotics, food plants, and a limited number of other useful cultigens. Twelve of the recorded species are either extinct or were never successfully established on Nauru.
This paper lists the vascular flora of the three atolls (Canton, Gardner, Hull) and five small islands (Birnie, Enderbury, McKean, Phoenix, Sydney) of the Phoenix Group,
located in the arid equatorial belt of the Central Pacific, based on extensive collections made in 1973 and 1975 and on previous records and collections. The flora includes 87
species in 36 families. Only 28 of the species (32%) are considered native. A further 60 species have been recorded in the literature, many of them deliberate introductions which
Nukutipipi atoll (5 km2), of volcanic origin 16-17 million years old on the Pitcairn (hot spot) Hereheretue line, presents a land flora and fauna of low diversity but with a Pisonia forest and hundreds of resident red-tailed tropic birds. Nukutipipi suffered from the 1983 hurricanes : destruction of vegetation and motu as well as sand lagoon mollusc populations. The north and south rims present original geomorphological structures.
During the period 1958-1964, the authors undertook soil and vegetation studies in the northern Marshall Islands as part of the University of Washington Radiation Biology Laboratory surveillance team. This team was responsible for monitoring levels of radiation in various components of the island environment and any effects on plant and animal life. The authors of this report were charged with the soils and vegetation components but assisted with collections in the aquatic ecosystems and some food plant materials.
Phosphatic limestones and associated soils occur on eight of the nine islands of Tuvalu, central Pacific. Deposits range from gram-size to >500,000 tons. Carbonate hydroxyapatite, dahllite, forms crustose cement about calcareous bioclasts which it sometimes replaces. Precise genetic relationship of rock to soil is unclear. Consolidated rock occurs as hardpan within phosphatic soil profiles, with unconsolidated phosphatic layers above and below. Phosphatization has occurred either as a continuous or episodic process within the vadose zone for at least 4000 years.
Jonathan Sauer (1961) remarked, in his Coastal Plant Geography of Mauritius, that the chance to study the coastal vegetation there was like being "admitted to a field worker's paradise"
and stressed that "most tropical coasts are beautiful and exciting, particularly to people concerned with natural processes . . .." The same can certainly be said for the tropical coasts of the often Edenized islands of the Pacific Ocean. Their "beauty and excitement" is considerably enhanced,
This monograph sheds light on the status of secondary plant cover, heretofore little known, on slopes between sea level and about 750m in the Marquesas Islands, a remote tropical Polynesian archipelago of high islands of volcanic origin situated in the dry tradewind zone of the South Pacific. Plant cover types are described and assigned to xerotropical, transitional and pluviotropical floristic zones determined in part by comparison with similar zones previously devised for Oahu Island, Hawaii.
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Mauke, Mitiaro and Atiu are deeply eroded volcanic islands in the southern Cook Islands, south Pacific, each surrounded by a rim of elevated Cenozoic reef limestone (makatea). This paper presents the results of instrumental topographic surveys of each
Fruit bats of the genus Pteropus are considered to be strong fliers (Kingdon, 1974; Nowak and Paradiso, 1983), with some species commuting distances of 10-50 km between day roosts and feeding areas (Breadon, 1932; Ferrar, 1934; Hall, 1983; Lim,
1966; McWilliam, 1985-1986; Ratcliffe, 1932; Taylor, 1934; Walton and Trowbridge, 1983). Longer seasonal movements of > 100 km are known for several species of Australian Pteropus, which change roosting sites in response to shifting patterns in the
This review was prepared on very short notice, to
provide a summary of what is known to the reviewer at the
time, June 1988, about the natural phenomena of the Marshall
Islands. This was for the use of the members of the survay
team sent to the Marshalls by the Environment and Policy
Institute of the East-West Center, Honolulu. Their mission
was to investigate the remaining relatively natural areas
and the extent of biodiversity in the new Republic of the
Marshall Islands.
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On the 21 small islands located within the northern bays and reef systems of Tongatapu, Tonga, species of terrestrial flora present were identified, and vegetation units and gemorphological features surveyed on 12 that were previously unmapped. A species/ area plot of the data shows that rock islands are consistently more diverse than sand islands. Size of flora is also a function of frequency of human use of islands,
Field work conducted by the senior author at Bikini
Atoll, Marshall Islands, in May 1986 yielded twenty-three
species of birds; six of these were documented as nesting
and an additional four species almost certainly nest as
well. Six species were previously unrecorded for Bikini
Atoll, and one of these, the Laughing Gull (Larus
atricilla) was new to Micronesia. The recorded avifauna
for Bikini Atoll now stands at twenty-six species. Major
seabird colonies were located on Aomoen (and other
The vertebrate fauna of Rotuma consists of over 425
fish species, no amphibians, 11 terrestrial reptiles, 15
land birds and two native mammals. The zoogeographic
affinity of the Rotuman fish fauna is with the Pacific
plate fauna; in contrast, the affinity of the reptile fauna
is with the Fijian fauna. A species list of Rotuman
occurrence is provided for each of the four vertebrate
groups as well as brief descriptions of the marine and
terrestrial habitats.
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Several large regions of the world are plagued by
conservation problems shaped around a particular inherent
set of geographical, biological and human conditions which
have been operational for varying periods of time. Typical
of situations facing Latin America are the progress of
economic development in Amazonia with its attendant loss of
rainforest biodiversity, and the Central American
"hamburger connection" involving conversion of forests to
grazing land to support the export of cheap beef to the
This paper attempts to provide a comprehensive listing and analysis of Kiribati plant names, along with the corresponding Latin, English, and selected Pacific-island vernacular names for plant species with recognized Kiribati vernacular names. The study focuses on those species found on the 16 islands
The purpose of the present study is to: 1/ list the presently known heterodont bivalve fauna of the Cook Islands, 2/ document the habitat specificity of the species involved in as much detail as possible, and 3/ investigate the correlation between a species' habitat specificity and its distribution among the various islands. While several studies have been done on the molluscan fauna of inner reef environments on Pacific islands (though bivalves are often neglected), there has been little work on the fauna of the outer reef slope.
The island was first mentioned by Roggeveen in 1722
(JOURDAIN 1970), but visits became regular only during the
XlXth century. An evangelist, of the "London Missionary
Society" settled down in 1829 (NEWBURY 1986), which supposes
that exchanges with the outside were regular at that time.
This probably explains the presence of bird specimens
collected outside the Scientific Expeditions (e.g. description of Ptilinopus purpuratus chalcurus in 1859 by GRAY).
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The Clipperton atoll (10°18'N, 109°13'W) is closed and holds a
lagoon with marked stratification; surface waters are brackish
(S=4/6%), but deep waters show a salinity close to that of seawater and high concentrations of H2S; temperature and pH are high. In this paper, environmental data concerning the atoll, the lagoon and the surrounding ocean are recalled and are followed by the study of the zooplankton of the lagoon and ocean.
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Physical Description: 17 p.
Mataiva Atoll, one of 84 in French Polynesia, is a small coral
island at the western edge of the Tuamotu Archipelago. This atoll occupies a particular place among the French Polynesian atolls since the discovery beneath the lagoon sediments of deposits of phosphates soon to be exploited. In order to estimate the environmental effects of such exploitation and plan a management scheme, numerous studies have been carried out since 1978 by many scientific organizations: Antenne du