Samoan
Archipelago.
Territory
of American Samoa.
Population.
Topography.
Climate.
Tropical
cyclones (hurricanes).
Native
flora and fauna.
Endemic
species.
Threatened
or endangered species.
Dangerous
species.
Tropical
diseases.
|
Site
(1)
|
Year
|
Location
|
km sq
|
acres
|
| Rose
Atoll National Wildlife Sanctuary |
1973
|
Rose
Atoll |
158.8
|
39,251
|
| Fagatele
Bay National Marine Sanctuary |
1985
|
Tutuila |
0.7
|
161
|
| National
Park of American Samoa (2) |
1988
|
Tutuila,
Ofu, Ta'u |
42.6
|
10,520
|
| Vaoto
Territorial Marine Park |
1994
|
Ofu |
0.5
|
120
|
| Sea Turtle/Marine
Mammal Sanctuary (3) |
2003
|
All territorial
waters (0-3 miles offshore) |
 |
 |
| Community-based
marine protected areas |
-------
|
several
villages |
-------
|
-------
|
Conservation
areas as of 2005:
Pests
and weeds (invasive non-native species).
Few. On land, no poisonous snakes, but a bite from a large 8-inch centipede
can be extremely painful. In the ocean, sharks are generally not a problem but
stepping on the poisonous spine of a stonefish can be a serious medical emergency
although this rarely happens. Consumers of fish should note that ciguatera poisoning
has been found (infrequently) in several snappers (locally called mu) and a
few other fish species. Also, avoid eating any fish or invertebrate caught in
Pago Pago Harbor, because they are contaminated with heavy metals and other
pollutants.
Malaria is not present, but two other mosquito-transmitted diseases can occur
here: dengue fever (caused by a virus) and filariasis (elephantiasis, caused
by a parasitic nematode worm). However, the chance of getting either by a visitor
is slight (see chapter on mosquitoes). Leptospirosis, a common tropical bacterial
disease spread through contact with the urine of infected animals (pigs, dogs,
cats, rats), is fairly common among local residents (17% recent infection history);
most people have mild flu-like symptoms but it can be fatal.
Chronology
of local environmental events. See Appendix 1.
(1)
All fishing is prohibited at Rose Atoll, but traditional subsistence fishing
is permitted at the other sites. The village marine protected areas have been
periodically opened to fishing.
(2)
An expansion of the National Park on Olosega and Ofu islands was pending in
2005.
(3) Governors
Executive Order No. 005-2003 established the turtle/marine mammal sanctuary.
Other special management areas in the Territory include Pago Pago
Harbor, Nu'uuli Pala
Lagoon and Leone wetlands.
The total land area of 76.1 square miles (197.1 km2) includes five volcanic
islands (Tutuila, Aunu'u, Ofu, Olosega, Ta'u) and two remote atolls (Rose, Swains).
Hot, humid and
rainy year-round, but there is a long, wet summer season (October - May) and
a slightly cooler and drier season (June - September). Total rainfall is 125
inches at the Tafuna airport and 200+ inches in mountainous areas.
Most native species here are closely related to those in Indonesia, but due
to our remote location in the Pacific Ocean, the diversity of terrestrial species
here is low: 343 flowering plants, 135 ferns, 25 resident or migratory land
and water birds, 20 resident seabirds, 3 mammals (all bats), 7 skinks, 4 geckos,
2 sea turtles, 1 snake, and other occasional visitors. In contrast, the diversity
of marine species here is high: 890 coral reef fishes, over 200 corals, and
several whales and dolphins. Insects and other invertebrate species here are
not well known.
Federally listed species here include humpback and sperm whales, and the green
and hawksbill sea turtles. Additional species 'of concern' in the Territory
include the sheath-tailed bat, 3 birds (Spotless Crake, Friendly Ground Dove,
Many-colored Fruit Dove), several land snails, and others.
There are many: rats, 3 bird species (2 mynas and bulbuls), feral pigs, dogs,
cats, toads, house gecko, tilapia and molly fishes, African and predatory snails,
various insects, about 250 alien species of vascular plants (many of them weed
species), and others.
Polynesians arrived here about 3,000 years ago. The current population (62,000
in 2005) is growing rapidly at about 1.8% per year, which equates to about 1,100
additional babies and immigrants per year. Most people (96%) live on Tutuila
Island. The ethnic composition is approximately 90% Samoan, 4% Tongan, 2% Caucasian,
and 4% others.
The main islands are steep mountains that emerge from the ocean floor 2-3 miles
below the sea surface. Peak elevations are 3,170 feet on Ta'u Island (Lata Mountain)
and 2,142 feet on Tutuila Island (Matafao Peak).
While very destructive, cyclones are a natural but erratic feature of the environment
in this part of the world. The most recent ones in American Samoa have occurred
at intervals of 1-13 years: 1981 Esau, 1987 Tusi, 1990 Ofa, 1991 Val, 2004 Heta,
2005 Olaf.
Species found only in the Samoan Archipelago include one bird (Samoan starling),
one stream fish, several land snails, and about 30% of local plant species.
Five flowering plant species are endemic to American Samoa itself. Marine endemics
have not been identified, but a thorough investigation has not been conducted.
1. Local facts
and maps
This chain of
13 Pacific islands (9 inhabited) plus two remote atolls is located 140 south
of the equator near the international date line. It is divided into two political
entities, the US Territory of American Samoa and the neighboring independent
country of Samoa, formerly known as Western Samoa. The youngest islands in
this chain lie towards the east (Ta'u). The land area of (western) Samoa (2934
sq km, 1132 sq mi) is approximately 15 times larger than the land area of
American Samoa (197.1 sq km, 76.1 sq mi).