|
This
summer the Pope and I came to an understanding. If you
account for a Supreme Being, he said, the Vatican doesn't
have a problem with evolutionary theory. He went further
to suggest that to view "life in terms of an 'ongoing
creation' is a scenario that makes increasing sense, scientifically
and theologically." Reading that statement made me
smile. I'd like to think Pope John Paul II came to this
conclusion during one of his famous daily moments of prayerful
isolation-a conviction evolving from the depths of some
spiritual kipuka. Hawaii, in its great physical isolation,
has emerged as a testament to the great creative powers
of evolutionary process. To acknowledge this path, you
must delve into isolation.
Isolation
is a fundamental force that propels the creation of new
species. Hawaii, perhaps unlike any other place on earth,
has some powerful forces of isolation. Look at a map of
the world, find Hawaii, and you'll see its surrounded
by ocean. It's the most isolated island group from a continental
landmass. Study its geography and you'll find over a hundred
and twenty islands, each one separate from the other.
Look at the topography of the islands independently, you'll
discover an astonishing array of landforms with physical
barriers such as lava flows, volcanic craters, deep valleys,
vertical cliffs, narrow ridges, erosional gulches, and
mountain summits. Each barrier with the potential to isolate
some organism unable to move beyond. The Hawaiian Islands
are a massive isolating mechanism. This mechanism creates
genetic pressure which bubbles forth new life. Perhaps
the most obvious example of this process on the Big Island
is within our kipuka.
|

Hikers approaching a
kipuka on Mauna Loa
(Photo by Carl Waldbauer)
|

A View Inside the
Kipuka
(Photo
by Carl Waldbauer)
|
Kipuka
is a hawaiian word for a piece of older lava flow, often
with lots of vegetation, surrounded by newer lava. These
kipuka are often called islands within an island. On the
Saddle Road above Hilo, from mile marker 17 through mile
marker 23, kipuka stand out as mounds of dense forest
amongst sparsely vegetated lava flows. Imagine yourself
a small little insect with slight powers of flight. You
are an individual part of a genetic pool within a large
forested area. One day Mauna Loa erupts and sends lava
down the mountainside destroying all in its path. By Pele's
design the front of the flow splits and two separate toes
move forward a mile or so. Eventually, the two toes come
back together in a single mass and continue to course
downhill. You find yourself caught in the patch of forest
spared as the flow diverged. Unable to fly across the
lava fields, you and a small handful of your kind are
isolated from the rest of your genetic family. As you
and your remnant band breed, the tiny gene pool available
to you may have some mutation that reveals itself. Perhaps
some deeply hidden recessive gene that produces wilted,
non-functional wings occurs in your offspring. Fortunately,
without any predators to stalk these helpless offspring
condemned to a life on the forest floor, they survive.
With only each other to breed with, this flightless deformity
quickly becomes prevalent within the group until all of
your progeny are born flightless. Over time other changes
occur until the gene pool is very different from its ancestral
stock. Within the kipuka a new flightless creature has
evolved.
|

Carnivorous Caterpillar
(Photo by Bill Mull)
|

Flightless Fly
(Photo
by Bill Mull)
|

Mint-less Mint
(Photo by Jack Jeffrey)
|
This
kipuka process is just one avenue of isolating creationism.
As an original founder first colonized the islands, its
gene pool also went through transformations. From here
it is not hard to understand that Hawaii produced such
things as giant, flightless geese, carniverous caterpillers,flightless
flies, mintless mints, briarless greenbriars, tarless
tarweeds, and nettleless nettles. Here in Hawaii, we have
arguably the finest examples of evolutionary biology within
the plant, bird, and insect world. Hawaii is a crucible
of creation. Biologists use wonderful jargon for these
evolutionary processes: adaptive radiation, genetic drift,
genetic bottleneck, genetic shift, genetic recombination,
founder effect, Sewall Wright effect, propagules, speciation.
Somehow, I think I enjoy "ongoing creation"
best. As I read the papal decree, an image of the Pope
Mobile bouncing across the remote Saddle Road passed through
my head. And I envisioned in the solitude of some isolated
kipuka a tiny bit of ongoing creation.
Top
of Page
|