Rat eradication is a highly effective tool for conserving biodiversity, but one that requires considerable planning eff ort, a high level of precision during implementation and carries no guarantee of success. Overall, rates of success are generally high but lower for tropical islands where most biodiversity is at risk. We completed a qualitative comparative review on four successful and four unsuccessful tropical rat eradication projects to better understand the factors influencing the success of tropical rat eradications and shed light on how the risk of future failures can be minimised.
The Baja California Pacifc Islands, Mexico, are globally important breeding sites for 22 seabird species and subspecies. In the past, several populations were extirpated or reduced due to invasive mammals, human disturbance, and contaminants. Over the past two decades, we have removed invasive predators and, for the last decade, we have been implementing a Seabird Restoration Programme on eight groups of islands: Coronado, Todos Santos, San Martín, San Jerónimo, San Benito, Natividad, San Roque, and Asunción.
Considerable bene?ts can be achieved for indigenous biodiversity when invasive vertebrates are removed from islands. In New Zealand, two logistically challenging eradications were undertaken, one to remove cats (Felis catus) and the other Paci?c rats (Rattus exulans) from Te Hauturu-o-Toi/Little Barrier Island (Hauturu). Here we document the short- and long-term impacts of these interventions on the biodiversity of Hauturu. We also assess the extent to which predicted outcomes were re?ected in the measured responses for a wide range of species.
Who are we? UN Environments specialist biodiversity assessment centre, based in Cambridge, UK
Available online|Powerpoint presentation
Call Number: [EL]
Physical Description: 16 p
The Pacific region has benefited from a number of regional and national programmes to both assess the impacts of climate change on biodiversity and develop programmes to adapt to climate change. Such programmes are critical considering that the Fourth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC) 1/ states that the Pacific region has already experienced temperature increases of as much as 1°C since 1910.
Climate change is a major threat to global biodiversity. From the tropics to the Poles, the worlds ecosystems are all under pressure. A study published in the scientific journal Nature posited that 15 to 37% of terrestrial animal and plant species could be at risk of extinction because of human-induced impacts on climate (Thomas et al., 2004). Scattered across the four corners of the Earth, European Union overseas entities, are home to a biological diversity that is as rich as it is vulnerable.
Tongas marine ecosystems are worth at least TOP 47 million per year, exceeding the countrys total export value. We are strongly committed to sustaining these values to build an equitable and prosperous blue economy.
Available online
Call Number: [EL],363.94 MAR
ISBN/ISSN: 978 82 7701 174 5
Physical Description: 84 p
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
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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Masayoshi Okabe visited the Palau and Yap Islands to study the local medicinal plants and diseases treated through their use. He made reports of his findings (1941a, 1943a) in Japanese. In this paper the authors present for the first time in the English language a published record of Okabe's findings.
Available online
Call Number: [EL]
Physical Description: 26 p.
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
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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Call Number: [EL]
Island ecosystems have proven to be particularly sensitive to
human disturbances (Bourne 1975; Byrne 1980; Jarvis 1979). This was first noted by Charles Darwin in the explanation of his theory of natural selection (Byrne 1980). Since then, qualities of insular species have been examined by various authors in an attempt to understand the basis for island vulnerability.
Available online
Call Number: [EL],VF 2783
Physical Description: 34 p.
Species-numbers relationships in the McKean Island assemblage
of reef-building corals were investigated to discover how they changed along environmental gradients of the reef. For the purposes of the study, two gradients were identified a complex depth gradient and a wave exposure gradient.
Available online
Call Number: [EL]
Physical Description: 42 p.
At the time of the POBSP visit, cats (Felis domestica), dogs
During participation in part of the Fairbridge Expedition
to New Guinea, February to May, 1969, I had opportunity to visit 17 islands and cays east of the New Guinea mainland for sufficient time to assemble reasonably complete collections oi their terrestrial reptilian fauna. The purpose of this paper is to present the results of that survey. Fairbridge (1971 ) has previously published a brief report on the expedition and. a more detailed one is in preparation.
Available online
Call Number: [EL]
Physical Description: 41 p.
The Gilbert Islands are a part of the Gilbert and Ellice Islands Crown Colony of Great Britain. They lie in the Pacific Ocean directly southeast of the Ilarshall Islands and are located between the parallels of g045' S. and 3'30' N. latitude, and the meridians of 1720301 E. and 177 15' E. longitude. All of the islands in this groui3 are low islands related to atolls. They are inhabited by Micronesian and Melanesian people who are greatly dependent on materials from the sea for food.
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Call Number: [EL]
Fishers have changed their methods from wading in the shallows to the use of sail and paddle canoes, and dinghies with outboard motors. This has resulted in greater coverage of the area where sea cucumbers live, more regular fishing, access to remote areas and the capacity to transport greater catches. Loss of much larger numbers of sea cucumbers from many areas as a result of this increased fishing pressure reduces the chances of adults remaining at densities high enough for effective reproduction.
In 2001, the Government of Samoa released the National Biodiversity Strategy and Action Plan (NBSAP) for the conservation and sustainable development of the country's biological resources. The NBSAP identifies invasive alien species (IAS) as being one of the greatest threats to Samoa's
biodiversity. The National Invasive Alien Species Implementation Action Plan (NIASIAP) addresses this threat, building on the actions identified in 'Theme 6 - Biosecurity' of the NBSAP,
as well as elements of Themes 1, 2, 3 and 7, and pursuing the following objective:
The Department of the Navy (DoN) is committed to demonstrating environmental stewardship while executing its national defense mission. The United States (U.S.) Navy (Navy) is responsible for