PubMed · 12560820
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2003. Generating copy(s).. https://doi.org/10.1038/nbt0203-111
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I conducted surveys of the plant species occupying 136 small islands in the Exuma Cays and 58 small islands near Andros, Bahamas. Most species occurred on relatively few islands, and most islands contained relatively few species. Identities of the most common species differed between the two archipelagos. Comparisons with earlier surveys revealed species extinctions and immigrations. Turnover was relatively low on both a per island and a per species basis on both archipelagos, although significant spatial variation in turnover rates between archipelagos was found. Most islands experienced no turnover; islands on which turnover did occur were larger and had higher species richness. Likewise, most species did not turnover, although much variation existed in turnover rates among those that did. Experimental introductions of two species to very small islands naturally devoid of vegetation revealed that these islands could support plant life. One species survived on eight of ten islands for >9 years, including the effects of a moderate (class 2) hurricane. This hurricane caused substantial damage and loss of plant biomass, but resulted in no species extinctions on 30 small islands. Data for the small islands in this region, now spanning almost a decade, reveal that most populations are persistent over periods of years to decades, rarely going extinct or immigrating. Even moderate hurricanes seem to have little impact on species compositions.
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The degree to which health planning and management functions are decentralised has been one of the key questions in developing countries from when they first gained independence. This paper's aim is to examine the question of the historical distribution of responsibilities within the health sector of four territories, Trinidad and Tobago, the Bahamas, Martinique, and Suriname, in order to identify the roles of the different levels, changes over time and recent reform trends, and to seek to explain the reasons for changes. These territories were selected deliberately, on the grounds of their different colonial backgrounds. Common features included identification over several decades of management structures and skills as key problems; proposals for regionalisation and greater hospital autonomy as desirable solutions; and in three of the four territories, recent implementation of major structural reforms. Important influences on the timing and nature of decentralisation reforms included political and economic factors, the attitudes of the public service unions and the medical profession, and external funders who were particularly important in financing reforms and supporting the development of detailed implementation plans. The bureaucratic inheritance of the two English-speaking countries provided major barriers to structural change, which they have addressed through reforms involving the creation of agencies with delegated authority.