The world is facing a biodiversity crisis. Nowhere is that more apparent than on oceanic islands where invasive species are a major threat for island biodiversity. Rats are one of the most detrimental of these and have been the target of numerous eradication programmes; a well-established conservation tool for island systems.
The impacts of house mice (Mus musculus), one of four invasive rodent species in New Zealand, are only clearly revealed on islands and fenced sanctuaries without rats and other invasive predators which suppress mouse populations, influence their behaviour, and confound their impacts. When the sole invasive mammal on islands, mice can reach high densities and influence ecosystems in similar ways to rats.
Following the incursion of rats (Rattus rattus) on Taukihepa (Big South Cape Island; 93.9 km²) off southern New Zealand in 1963, and the subsequent extirpation of several endemic species, the New Zealand Wildlife Service realised that, contrary to general belief at the time, introduced predators do not reach a natural balance with native species and that a safe breeding habitat for an increasing number of at risk species was urgently needed.
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.
The objective of this study is to provide decision makers in the European Commission and other partner countries with sufficient information to identify European Commission cooperation activities with specific environmental objectives and to establish environmental safeguards for other activities.
5 copies
Call Number: 333.7'9595 MOU,[EL]
Physical Description: 74 pages; 29 cm
The New Guinea mainland and surrounding islands possess an extra-ordinarily rich flora and a great diversity of vegetation types that parallel the diverse physiography of the lands and the resulting climates that prevail. A high proportion (some three-quarters) of the land area has a forest cover,
The human drama of climate change will largely be played out in Asia, where over 60 per cent of the world's population, around four billion people, live. Over half of those live near the coast, making them directly vulnerable to sea-level rise. Disruption to the region's water cycle caused by climate change also threatens the security and productivity of the food systems upon which they depend. In acknowledgement, both of the key meetings in 2007 and 2008 to secure a global climate agreement will be in Asia.
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This report serves as to create an overview of Integrated Water Resources Management (IWRM) progress and activities in the Pacific Island Countries (PICs). The overview is to form part of a submission by the GWP (Global Water Partnership) Secretariat at the forthcoming;
"(i) donor meeting to mobilise and seek support for IWRM in February, 2004, and the
(ii) CSD conference in New York, March, 2004".
Available online
Call Number: [EL]
Physical Description: 37 p.
The World's oceans play a crucial role for life on the planet.
Healthy seas and the services they provide are key to the future
development of mankind. Our seas are highly dynamic, structured and complex systems. The seafloor consists of vast shelves
and plains with huge mountains, canyons and trenches which
dwarf similar structures on land. Ocean currents transport water
masses many times larger than all rivers on Earth combined.
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Call Number: [EL]
ISBN/ISSN: 978-82-7701-048-9
GOOS is being implemented in the Pacific islands region by PacificGOOS, which was formed in Suva in 1998. In August 2000, in Apia, Samoa, PacificGOOS held a regional workshop on the development of a coastal Global Ocean Observing System (GOOS) for the Pacific region. This workshop aimed to raise the level of awareness about PacificGOOS and its value for sustainable
The GOOS Capacity Building Workshop for the Pacific was identified in the GOOS 1998 Plan and it was approved by the IOC Assembly in 1997 and the SOPAC Annual Session in 1997. The IOC and SOPAC were co-sponsors of the workshop and its preparation was co-ordinated by Jan Stel (Chair), William Erb (IOC) and Alf Simpson, Russell Howorth and Andrew Butcher of SOPAC.
Williamson and Sabath (1982) have demonstrated a significant relationship between modern population size and environment by examining atoll area and rainfall in the Marshall Islands. The present work seeks to extend that argument into prehistory by examining the relationship of ancient habitation sites and size of aroid pit agricultural systems to atoll land area and rainfall regime along the 1,500-3,500 mm precipitation gradient in the Marshall Islands.
Henderson island, a World Heritage Site in the Pitcairn group, south-central Pacific Ocean, has often been thought to have a pristine vegetation. Our archaeological investigations and field observations in 1991-1992, supported by recent observations in
1997, suggest the occurrence of former areas of Polynesian cultivation near to the North and East Beaches, and indicate that about 17 non-native vascular plant taxa have occurred.
Microbenthos and macrobenthos were quantitatively studied at 62 stations distributed regularly over the Uvea Atoll lagoon (850 km2). Sampling was performed using both SCUBA and a 0.1 m2 Smith Mclntyre grab. Mean estimates of ATP, chlorophyll a and phaeopigments were 297.3ng/cm2, 77.01 mg/m2 and 35.28 mg/m2
respectively. The mean macrobenthic biomass was 4.14 gAFDW/m2 of which the macrophytobenthos accounts for 39%. The benthic biomass decreased from the coast to the deepest parts of the lagoon. Macrophytes were most abundant in the coastal area
The study of dispersal processes of small mammals, and especially of rodents, has a wide range of applications and until recent years there were few publications discussing the
colonisation of 'oceanic' islands by small mammals (cf. Crowell, 1986; Diamond, 1987; Hanski, 1986;Heany, 1986; Lomolino, 1986).
What are the decapod crustacea known from French Polynesia? The answer to this, apparently simple question, would be very helpful for determinating the species collected during ecological studies. Moreover, from a biogeographical point of view, a check list of the species reaching this area, at the eastern limit of the Indo-West Pacific province, would be very interesting.
The islands of French Polynesia are scattered throughout a considerable oceanic area located on the eastern boundary of the Indo-Pacific Province. This area stretches from 134°28' W (Temoe Island) to 154°40' W longitude (Stilly Island), and from 7°50' S (Motu one Island) to 27°36' S latitude (Rapa Island). Out of the 118 islands constituting French Polynesia, 35 are high volcanic islands and 83 are low-relief islands or atolls. Altogether, the territory of French Polynesia represents an area of 4000 km2 of dry land, 12,000 km2 of lagoonal water and a huge
Matter and energy budgets for coral reefs, their components, and the world around them can, do, and must balance in a theorical context (Smith and Kinsey, 1988). In this paper, we will try to
establish nitrogen, phosphorus and silica budgets between ocean and lagoon waters of Tikehau atoll in the purpose to learn more about the functioning of coral reef lagoons. Nutrient concentrations (dissolved components and particulate organic matter) were measured in the lagoon and in the surrounding oceanic surface waters between 1983 and 1987.
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