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Seaweeds of American Samoa
BRB
Available Online

Posa A. Skelton

This study provides the latest, up-to-date information on the diversity of marine plants (algae and seagrasses) of American Samoa. A general introduction to marine plants is provided, with observations on the flora of the islands. An illustrated guide to 67 macroalgae and seagrasses is provided in this report. The surveys covered 26 sites from four inhabited islands Tutuila, Aunu’u, Ofu and Olosega and two smaller uninhabited islands – Nu’utele and Nu’usilaelae. The habitats surveyed include subtidal sites to 20-m depth, inter tidal and the spray or splash zone. It also included surveys of relatively pristine coral reefs as well as high impact areas such as the inner Pago Pago Harbor. Two separate surveys, both over a two-week period in October 2002 and September 2003 were carried out and the final results are reported herein. A total of 635 specimens were analyzed and 239 algal and seagrass species were enumerated. The red algae (Rhodophyta) had the highest number of species with 133 identified. The green algae (Chlorophyta) had 60 species, the brown algae (Phaeophyta) had 29, and the blue-green (Cyanophyta) 27; only two seagrass species were found. This study showed that the flora of American Samoa is diverse, and that what is recorded reflects about 60% of the potential flora. The most diverse site was Utulei with 56 species; a site located near the Pago Pago Harbor entrance. Other notable diverse sites include the Fagatele National Marine Sanctuary with 50 species, Fagasa (44), Mafafa (36), Aua (32), and Onososopo and Fagaalu both with 31 species. The least diverse sites were the docks and the smaller Nu’usilaelae Island. This is attributed to the limited collections from these sites for safety reasons. There are no substantiated records of endemic algae or seagrasses from American Samoa. Two species recorded by the American phycologist, William Setchell in 1924 (Sargassum fonanonense and Sargassum anapense) need more studies to verify their endemicity, as similar species have been recorded in the neighboring Western Samoa islands, where they are known under different names. Four algae are considered to be recently introduced into the American Samoan flora. Halymenia durvillei and Caulerpa serrulata may have been introduced from Apia Harbor, Western Samoa, whereas Grateloupia filicina and Codium mamillosum may have been introduced from places beyond the Archipelago. Although only single specimens were collected for the latter two algae, it is prudent that monitoring and surveys must be maintained to keep abreast of any potential impacts. The flora of American Samoa fits in with the biogeographic theory of decreasing diversity away from the Indo-Pacific centre of biodiversity. The 222 species of red, green and brown algae is well above those of the Cook Islands (67) and the Easter Islands (134), but below that of French Polynesia (308). The reason for this disparity is attributed to the intensity of collections. The diversity of American Samoan seagrasses and algae are better known than those of neighboring island countries. To allow for a continuous buildup and maintenance of this knowledge the following observations and recommendations are made.
Invasive ants as a biosecurity threat
BRB
Available Online
Factsheet produced by the IPPC pilot programme on surveillance with the collaboraton of the Animal and Palnt Health Quarantine Agency of the Republic of Korea; CSIRO Australia; TNC USA, James Cook University, Australia; University of Guam, Guam
Forests, trees and food
BRB
Available Online
1992
Despite substantial increases in food production in many countries over the past two decades, the world is still poorly fed. Over 500 million people suffer from malnutrition; and every year about 20 million people die of starvation and its related diseases. In this situation, it is important that every effort be made to improve nutrition and increase food security, particularly for the rural poor. This publication aims to afford proper recognition to the contribution forests and trees make to the food economies of rural societies. It also outlines the changes that need to be made within forestry institutions to enable them to make a significant contribution to the food security of local communities. Food security is increased not only by the presence of forests but also by the small stands of trees found in homegardens and on farms. We use the term `cultivated trees' to describe the latter, and reserve the term `forests' for large stands of trees situated outside the homestead or farm, whether such forests are managed or not. Both play major, often little recognized roles in improving food security in rural communities. Parts of forest plants and trees are also used in traditional medicines. These medicines stimulate appetite, help the body to utilize nutrients in food, and fight infection. Tree products provide an extra source of income for the rural poor without which many families would go hungry or become malnourished. Fuelwood and charcoal, rattan and other materials for furniture making, tendu leaves for cigarette manufacture, gum arabic for a variety of industrial uses, numerous oils and resins, dyes and medicines are all sold by the rural poor. They enable millions of the poorest people in the world to earn the cash they need to avoid starvation. Forests and agroforestry systems also play important roles in stabilizing agriculture's resource base, for example, by slowing down soil erosion by wind and water and reducing sedimentation in rivers. In some cases, trees improve and enrich agricultural soil and help stabilize water supplies, thus improving soil productivity and making sustainable cultivation of marginal lands possible. Trees also exert important influences on micro-climates, thereby improving agricultural production.
Reports on invasive species on Pacific islands: survey report: American Samoa, Commonwealth of the Northern Mariana islands, Rota, Saipan, Tinian, Cook Islands, Federated States of Micronesia, Chuuk, Kosrae, Pohnpei, Yap, Guam, Kiribati, Niue, Palau, Samoa, Tonga
Island and Ocean Ecosystems, BRB
Available Online

Pacific Island Ecosystems at Risk (PIER)

2011
Report to the Government of Samoa on Invasive Plant Species of Environmental Concern
BRB
Available Online

Flynn Tim

,

Spaces, James C

2002
The objectives of the survey were to: (1) identify plant species presently causing problems to natural and semi-natural ecosystems; (2) identify species that, even though they are not presently a major problem, could spread more widely or are known to be problem species elsewhere; (3) confirm the absence of species that are a problem elsewhere and, if introduced to Samoa, could be a threat there; and (4) make appropriate recommendations.
Observation on invasive plant species in American Samoa / by James C. Space and Tim Flynn
BRB
Available Online

Space, J.C. and Flynn, T.

1999
This is a continuation of the survey of islands in Micronesia and American Samoa for invasive plant species requested by the Pacific Islands Committee, Council of Western State Foresters. A survey of selected Micronesian islands was conducted in 1998 and was discussed in a previous report2. This report is based on perceptions gained from a trip to American Samoa from 16 to 23 July 1999, including the islands of Tutuila, Ofu, Olosega and Ta'u. The objectives were three-fold: (1) To identify plant species on the islands that are presently causing problems to natural and semi-natural ecosystems; (2) to identify species that, even though they are not presently a major problem, could spread more widely or spread to other islands where they are not present, potentially causing problems; and (3) to confirm the absence of species that are a problem elsewhere and, if introduced to American Samoa, could be a threat there.
Equipment and supplier catalogue: Pacific Invasive Initiative (PII)
Island and Ocean Ecosystems, BRB
Available Online

Pacific Invasive Initiative (PII)

2010
The purpose of this is to enable invasive species management practitioners to share information on equipment they have used and where it can be purchased. All the information on the catalogue has been provided by practitioners.
Global strategy on invasive alien species
BRB
Available Online

McNeely, J.A.

,

Mooney, L.E.

,

Neville, P.S.

,

Waage, J.K.

2001
Global strategy on invasive alien species.
Global Invasives Species Database (GISD)
BRB
Available Online

IUCN

The Global Invasive Species Database is a free, online searchable source of information about alien and invasive species that negatively impact biodiversity. The GISD aims to increase public awareness about invasive species and to facilitate effective prevention and management activities by disseminating specialist?s knowledge and experience to a broad global audience. It focuses on invasive alien species that threaten native biodiversity and natural areas and covers all taxonomic groups from micro-organisms to animals and plants.
Rodent management issues in South Pacific islands: a review with case studies from Papua New Guinea and Vanuatu
BRB
Available Online

Aplin, Ken P.

,

Brown, Peter R.

,

Hinds, Lyn A.

,

Jacob, Jens

,

Rithcie, Barbara J.

,

Thomas, Sarah E.

2018
Rodents are a key pest to agricultural and rural island communities of the South Pacific, but there is limited information of their impact on the crops and livelihoods of small-scale farmers. The rodent pest community is known, but the type and scales of damage to different crops on different islands are unknown. Knowledge about rodent pest management in other geographical regions may not be directly transferable to the Pacific region. Many studies on islands have largely focussed on the eradication of rodents from uninhabited islands for conservation benefits. These broadscale eradication efforts are unlikely to translate to inhabited islands because of complex social and agricultural issues. The livelihoods, culture and customs of poor small-scale farmers in the South Pacific have a large bearing on the current management of rodents. The aim of the present review was to describe the rodent problems, impacts and management of rodents on South Pacific islands, and identify gaps for further research. We compared and contrasted two case studies. The situation in Papua New Guinea is emergent as several introduced rodent species are actively invading new areas with wide-ranging implications for human livelihoods and conservation. In Vanuatu, we show how rodent damage on cocoa plantations can be reduced by good orchard hygiene through pruning and weeding, which also has benefits for the management of black pod disease. We conclude that (1) damage levels are unknown and unreported, (2) the impacts on human health are unknown, (3) the relationships between the pest species and their food sources, breeding and movements are not known, and (4) the situation in Papua New Guinea may represent an emergent crisis that warrants further investigation. In addition, there is a need for greater understanding of the invasive history of pest rodents, so as to integrate biological information with management strategies. Ecologically based rodent management can be achieved on Pacific Islands, but only after significant well funded large-scale projects are established and rodent ecologists are trained. We can learn from experiences from other locations such as Southeast Asia to guide the way.

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