Q: Does Hawai‘i have tropical rain forest?
A: Absolutely. In fact, Hawai‘i is
the only state with bona fide tropical rain forest.
Q: How much Hawaiian rain forest is left?
A: Although over half of the original native
rain forest has been lost or replaced by weeds, planted landscapes, or development,
a great deal remains. Perhaps 3/4 of a million acres of rain forest is left,
especially above 2500 feet elevation, but nearly all of these acres are
threatened by continued development, invading weeds, and destructive animals
and pests.
Q: Rain forest is the only major ecosystem in Hawai‘i,
right?
A: There are about 150 distinct ecosystem
types in the Hawaiian Islands. These ecosystems are so distinctive that
the Hawaiian Islands constitute a unique global bioregion. These ecosystems
range from tropical dry forest, to subalpine grasslands, snowy alpine deserts,
to brackish anchialine pools, subterranean lava tube systems with eyeless
creatures, to windswept coastal dunes. The Hawaiian ecological showcase
is impressive indeed!
Q: How much of Hawai‘i's ecosystems have
been lost?
A:
Some native ecosystem types have been very hard hit. For example, over 90%
of Hawaiian lowland dry forests have been lost to fire, development, agriculture,
or weed invasions. Other systems have been relatively little affected (alpine
deserts on the summit of Mauna Loa, for example are very much as they were
before humans). All told, perhaps half of the 150 ecosystem types are considered
in trouble, imperilled by human-related changes in the landscape. Most of
the loss has occurred along the coasts and in the lowlands, where the majority
of human habitation exists today.
Q: I've heard that Hawai‘i is the extinction
capital of the US. Just how many endangered plants are there in Hawai‘i?
A:
At the latest count just over 200 different taxa (species, subspecies, or
varieties) of Hawaiian plants are on the US endangered species list. These
include well-known plants such as silverswords, and the ma‘o hauhele
(Hawai‘i's state flower, a yellow hibiscus), as well as more obscure,
but fascinating and beautiful plants such as the Kanehoa mint, tree violets,
and the dwarf naupaka.
Q: I want to grow native Hawaiian plants in my
yard. Where can I get some and do I have to worry about breaking any laws?
A: There are quite a few beautiful Hawaiian
native plants that would thrive in your yard, whether you live in rainy
Manoa Valley or dry Kuli‘ou‘ou. The Lyon Arboretum plant sale
almost always includes native plants, as does the Foster Garden plant sale.
Many nurseries stock the hardier native plants, such as coastal akia, ‘ohi‘a
saplings, ‘ilima, etc. Some of these nurseries have quite a variety.
Bear in mind, though, that several plants touted as "native" such
as royal ‘ilima, are actually introduced plants that have become popular
for lei-making. Another thing to avoid is pulling up native plants from
the wild, or growing species that are rare or endangered. These require
permits from government agencies to ensure that they weren‘t harvested
from wild populations on the brink of extinction. Leave the growing of rare
native plants to specialists, who are working hard to find the best growing
conditions and methods for propagation, so that they can be replanted in
the wild, and eventually available for our yards.
Q: Where are the endangered birds, and how do I
see some of them?
A: Hawai‘i's endangered birds are generally
upland birds, because many of them are susceptible to diseases such as bird
malaria, which are spread by mosquitos at lower elevations. Many of Hawai‘i's
rarest birds are also dependent on native forest ecosystems, which are today
largely restricted to elevations above 2000 feet. Much of the remaining
rare bird habitat is remote and trackless, but there are some accesible
sites: Hawai‘i Volcanoes National Park on Hawai‘i; Haleakala
National Park and The Nature Conservancy's Waikamoi Preserve on Maui; Koke‘e
State Park on Kaua‘i. At these places you might see such birds as
the Nene goose, Hawaiian hawk, Crested Honeycreeper, or other very rare
birds.
Q: How can I help save the cattle egrets?
A: Actually, birds such as cattle egrets,
doves, mynah birds, and rice birds (and just about all of the birds that
you see in town or lowlands) are introduced birds, not native to Hawai‘i.
There are laws generally protecting these birds, but most conservationists
concentrate on saving Hawai‘i's rare native birds, such as the nene,
because if we lose them here, there are no replacements from elsewhere in
the world. They would be gone forever, to our great loss.
Q: How many monk seals are left in Hawai‘i?
A:
The Hawaiian Monk Seal (Monachus schauinslandi)
is an endangered species of marine mammal that is endemic (restricted in
distribution) to the Hawaiian Islands. Its Hawaiian name, ‘ilio holo
i ka uaua, refers to its dog-like appearence. They were hunted nearly to
extinction, but thanks to laws prohibiting hunting of monk seals, and a
wildlife refuge established in the Northwestern Hawaiian Islands (a series
of atolls, shoals, and small islands to the northwest of the main Hawaiian
Islands) there are well over 1250 monk seals today. They seem to be recovering,
and we see a few of them each year visiting beaches on Kaua‘i, O‘ahu,
Maui, and other islands, where they were once abundant.
Q: I thought I saw a bat! Is that possible?
A:
The Hawaiian bat, ‘ope‘ape‘a, is our only truly terrestrial
native mammal. The only other native mammal you might see on land in Hawai‘i
is the monk seal, but most people would count it as a marine creature. ‘Ope‘ape‘a
are most common on the islands of Hawai‘i and Kaua‘i, but are
also occasionally seen on other islands. Look for a small, fast-flying,
acrobatic bat, swooping and looping erratically in the air just after sunset.
But don't be confused by the large "black witch moth" which is
about the same size, and flies in a very erratic manner.
Q: I thought I saw a hummingbird! Is that possible?
A:
Hawai‘i has no hummingbirds, native or introduced. Many people mistake
the hummingbird moth (an introduced insect that enjoys nectar from flowers
in peoples' yards) for a real hummingbird. There's even what looks like
a fan-shaped tail on this orange and brown insect, and the hovering and
flower visiting habits are eerily hummingbird-like. Hawai‘i's rare
native birds include many nectar feeders, but these are a special group
of birds called Hawaiian honeycreepers.
Q: How can you tell if you've seen a Hawaiian owl?
A:
There are only two owl species in Hawai‘i: the native pueo or Hawaiian
owl, and the introduced barn owl. The two are fairly easy to tell apart.
The pueo's face is generally dark around the eyes, while the barn owl's
face is very pale and round. The pueo's body is a mottled dark brown and
buffy white, while the barn owl is generally light brown. The barn owl is
somewhat larger than the pueo and hunts primarily at night. The pueo can
be seen hunting by day, as well as at dusk and dawn.
Q: Where can I get more information on Hawai‘i's
rare plants and animals?
A: There are many books and magazine articles
on the subject. Recently National Geographic Magazine featured Hawai‘i's
Extinction Crisis (check out the September 1995 issue). A visit to the library
and a search for "Hawai‘i, Natural History" will get you
started. Also check out our related links web page as it lists many biological
resources.