|
November
11, 2002
Waigama
01° 47' 45" S, 129° 46' 95" E
This
morning the Social-economy team held a meeting with
some members of the Waigama community. A The community
were very impressed by information on the biodiversity
of the Raja Ampat islands, and particularly proud
of Misool's contribution. It was clear that there
is tension within the village over fish bombing and
cyanide; many said the culprits were outsiders, but
clearly some locals are involved. Holding pens on
nearby islands have small to medium wrasse, which
are difficult to catch on hook and line, and younger
members know how to obtain and use potash (cyanide).
Some said that they joined fishing groups to gather
information, but that it was difficult for villagers
to do anything against the armed bomb-fishers in their
fast boats. The police themselves have little capacity
- there is only one policeman in the village, and
he has neither boat nor fuel allowance.
Today
the divers took a day off, to catch up on data entry
- a schedule of three dives a day doesn't leave much
time for more mundane work.
Some
of the divers joined the vegetation team on a trip
up the Kasim river, and a trek across a small divide
into the interior. Here the team sampled an unusual
habitat, an open melaleuca savanna, which is possibly
at the western limit of its range. The canopy was
dominated by Melaleuca leucodendron s.l., and Eucalyptus
papuana, with an unidentified Araliaceae, possible
Polyscias or Gastonia. The grassland was dominated
by Ischaenum cylindrica, with a sugar-cane relative
Saccharum sp.. Amongst the other plants was a lovely
pitcher-plant (Nepenthes ?mirabilis). This savanna
is limited in extent on the Raja Ampat islands, and
may be the most important habitat surveyed so far.
Gerry
returned to the Kasim river after 3 years, and managed
to find the same guide - Pak Frederick, whose village
moved from the interior 40 years ago. In a tributary
of the Kasim, the Waytama river, Gerry netted some
rainbow-fish, a gudgeon, and probably a new species
of eel-tailed catfish (can only be confirmed after
x-ray analysis of the backbone).
The
evening discussion focussed on news from the turtle
survey. Tetha explained that the main nesting season
has just finished (August to October) but that there
are still many turtle signs about. To date, seventeen
beaches have been surveyed. On the east coast of Misool
there is sign of between 2-7 hawksbill nests per beach,
with predation by humans and monitor lizards. The
difference is easy to see - monitor lizards eat the
eggs on the spot, and the shells are left lying around;
humans take the eggs away, and the shells are seen
lying around campfires instead! The southeastern Misool
beaches are on islands, and generally smaller, there
are more hawksbill turtles and fewer greens nesting.
However, monitor lizard predation is very high - up
to 100%. On the south coast the mainland beaches are
disturbed by pigs (remember all the pig tracks the
vegetation team saw?), but there are offshore beaches,
and human disturbance is not great. On the 4 western
beaches surveyed, on islands off Waigama, there was
sign of both hawksbill and green turtles.
Turtles
face a dark future - besides predation of eggs from
the nests, adults are also hunted for local consumption
and for sale. In 1997 a Balinese boat was caught at
Misool with 160 turtles on board. The current state
of the turtle trade is unclear, but as another open-access
resource, they will continue to be harvested by all
and sundry. Turtles like the leatherback, which nest
in large numbers on specific beaches (like Jamursba-Medi
on the Papuan mainland), may be easier to conserve
than the hawksbill, which nests in small numbers on
almost all beaches in the region.
|