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Petite Piton and fishing boats viewed from Soufriere Harbor |
To say the island of St. Lucia is stunning is an
understatement. Its volcanic mountains
thrust up into the moist tropical clouds of the Caribbean bringing frequent
rains keeping everything verdant.
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The rain forest at the Millett Nature Reserve. |
However, this small (about 20 mile long) island has only a few
economic opportunities. Tourists are the
‘top banana’ but real bananas are second.
However, they don’t make enough money to support the island population so
poverty and begging (on land and in the sea) is common.
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Coastal village with fishing boats and a life connected to the sea. |
With this is the background lets consider the status and
conservation of St. Lucia’s coral reefs. St. Lucia is well known in among the
scientific and conservation community for having developed ocean use zoning
well before many countries or islands had considered it. Their reefs are small because the slopes from
the mountains are so great so fishing pressure is concentrated over a
relatively small area. That’s a
prescription for rapid depletion of reef fish.
So St. Lucia set up areas where fishing was prohibited and other areas
they call “Fishing Priority” areas. The
idea is that if fish stocks build up in abundance and size in the no-take
reserves, they will spill over into the Fishing Priority areas.
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St. Lucia's progressive marine zoning map for multiple uses. |
It appears this worked for a period of time. However, meeting with the Jeannine Compton
the managers of the Soufriere Marine Management Area (SMMA) she tells me that
in recent years “compliance is a problem”.
The SMMA region has Rangers who patrol the region daily but areas that
are out of sight or everywhere at night has little or no patrolling.
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Ms. Jeannine Compton the Director of the Soufriere Marine Management Area (SMMA). |
Jeannine arranged for Chancey Macdonald and I to survey all
of the important reefs of St. Lucia’s SMMA and CAMMA (Canaries Marine
Management Area). For this, SMMA Rangers
would pick us up each day from Alaria
for dives at two reef sites. We did this
all week and got a good feeling for the status of St. Lucia’s reefs.
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SMMA Rangers Mario Justin (left) and Francois Kerjackie (right). Great company and wonderful Rangers! |
First of all, this is a high island so much of the substrates
on which coral could live are boulders that rolled off the island. They had coral growing on them – and some
sites had considerable coral. What is
so odd is how little of the coral accumulated.
I have to assume that as soon as a coral dies in this environment, it
gets bioeroded to sediment that is washed away.
That’s very different from most of the Caribbean reefs I’ve studied (e.g.
in Belize, Mexico, Jamaica and St. Croix) where as coral dies they leave their
skeleton and the reef as a geological structure persists. Not so with few exceptions in St. Lucia.
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Boulder reefs of St. Lucia (but not all reefs are like this) |
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Stoplight parrotfish grazes a boulder reef. Strings are from a worm that eats particles that fall on the reef. |
The other difference we found in St. Lucia’s reefs is the
abundance of the black spined sea urchin named Diadema. This sea urchin
was, until 1984, one of if not THE dominant grazer on Caribbean coral
reefs. In the early 1980s this sea
urchin reached population densities averaging over 15 per square meter. It was a virtual carpet of poison-filled
spines that were literally and figuratively a pain in the ass. Well over 90% of Diadema died throughout the Caribbean and their recovery has been
slow or non-existent. However, at a few
sites on St. Lucia’s reefs, Diadema
population densities were enough for them to be the dominant grazer. Where that happens, the seafloor turns pink
from the calcifying red algae (called crustose coralline algae or CCA for short). The reef takes on an entirely new look. Light reflects off the reef, the water is
clear and baby corals do very well.
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Two Diadema urchins grazing with pink coralline algae and a few corals (along my transect line) |
We do wonder why Diadema
has come back to only a few places in the Caribbean. After a long period where no Diadema were easy to find on reefs, they
started to come back… but only to a point.
The pattern often is, they do well in some back-reef environments and
they do well at 3 – 5 meters water depth (10 – 15 feet) but not usually at the
10 m (30 foot) depth where we work.
However, we did find sites in St. Lucia where Diadema thrived at 10 m and we have to
wonder why here but not in lots of other places (recall we found NO Diadema in Barbuda).
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Baby (small) corals in a well urchin grazed portion of the coral reef |
One possibility is that the key Diadema predators such as queen trigger fish and some of the larger
grunts (e.g. bluestriped grunts) and Spanish hogfish are rare or absent at the
key Diadema sites. Our data suggests this may be the case. Some of the sites with relatively few Diadema predators had the highest abundance
of the sea urchin. While sites with lots
of Diadema predators had relatively
few sea urchins. The data are messy and
this is far from resolved but it may be that the heavily fished predators allow
Diadema to thrive and when that happens the reef appears healthy. Perhaps in an ideal world, it would be better
to have the big carnivorous and big herbivorous fish of yesteryear, but alas,
we are not living in a perfect world so the Diadema patch we studied was one of
the nicest reefs we’ve seen in the eastern Caribbean!
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Sponges, clear water and Diadema ... just a pretty reef! |
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Some staghorn coral (Acropora cervicornis) a rare but not absent coral in St. Lucia. |
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Peacock flounder (just pretty) |
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Very pretty small anemone that lives in a sponge. It is called Parazoanthus. |
Fishing is the only option for lots of the folk. What surprised me was they target ballyhoo and flying fish (by netting them) for food. Ballyhoo is most commonly used for bait elsewhere but there just aren't many big fish left so this is what they eat.
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Fisherman prepares the ballhoo he caught as Chauncey looks on. |
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Ballyhoo and other fish seasoned for tomorrow meal. |
There are also ideas of trying to deploy fish aggregation devices in order to get pelagic fish to stick around. No one was talking about them so I'm not sure they succeeded.
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Fish aggregation device "guarantees bigger and better catch" but I didn't hear anyone talking about them. |
Jeannine warned us that poaching within the no-take reserves
has been increasing in recent years.
This doesn’t surprise us because getting one
large lobster to market would be worth more than a day of begging for
money.
While it is arguable that
maintaining the marine reserves will sustain a healthier reef ecosystem, when
you have no financial resources, liquidating the natural resources to which you
have access becomes rational.
Note, that
does not mean it is sustainable, just that it is a rational option given the
lack of alternatives.
When the Rangers took us to our last site, which is around
the back of Gros Peton (the biggest of the two famous pitons), we came across
three local guys swimming. The rangers
asked them what they were doing but they had no evidence of having any
fish. Given that we were not within site
of any houses, it is unlikely these guys were just out for a swim. Nevertheless, Chancey and I had to do our
surveys so we suited up and jumped in the water. As we got to work, I noticed a fish trap not
far away. These are clearly illegal and
there was a string of them. Jeannine
thinks they are checked and rebaited at night in the dark.
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Illegal fish trap in the Gros Peton no-take zone. |
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Parrotfish (with spots) and other fish in the trap. |
I’ve seen plenty of fish traps over the decades but I can’t
think of many (any?) with as many fish or the diversity we saw in this trap. I saw in this one trap, Spanish grunt, French
grunts, white grunts, blue tang, ocean surgeon, surgeonfish, stoplight parrotfish,
spotted drum, Caribbean king crab (Mithrax)
and Caribbean lobster (Panulirus argus). Obviously the fishing was very good in this
no-take reserve. We reported this to the
Rangers and they asked that we open the trap and let the fish go (which we
did). It is unlikely the fellows swimming
had anything to do with the traps (they require a boat to service) but everyone
agreed that they were undoubtedly fishing but dropped their catch and their
spear guns when they saw the Rangers.
The income inequality is striking and we of course were part
of that. Next to fishing villages with
no opportunity for work or income are expensive cruising yachts. St. Lucia is a destination for a range of
cruising ships. Sadly, only a tiny
fraction of the wealth from a cruise ship of 3000 passengers is passed to the
island community of St. Lucia.
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Sailboats and big cruise ships frequent Soufriere Bay, St. Lucia. |
As it happens paying for moorings is one of the best sources
of income for coastal villages. But the
villagers know it is their job to try to extract as much money as possible from
transient sailors. You cannot tie up
your dingy at the town dock without a boy waving at you as you approach to
point out the obvious spot where you should tie up. Then they offer their services to watch your dinghy. This is worth the few dollars we spent for
this because an inflatable dingy is vulnerable (although we had the smallest
and dingiest dingy in the harbor).
After being in St. Lucia for nearly two months I could now
see and feel the “edge” that divided the haves from the have-nots. Children would paddle to the boat on a broken
found surfboard asking for food or money to take our garbage. We’d love to support them all but it would be
hopeless. There was also an
aggressiveness we encountered from time to time. People would not take “no” for an answer. On the occasions when we gave something to one
person we’d find a rapid increase in beggars wanting more from us. It is hard
to say no to those in need but our giving would not change this situation.
So it was with mixed emotions that we departed St. Lucia at
5 am under a starry canopy. As we sailed
out, we gazed at the shadows of the conical hulks of the pitons for the last
time. Just above them we saw the famous
Southern Cross constellation marking our way south to Bequia (St. Vincent) where
we hoped to find healthier reefs and happier communities.
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The setting sun from St. Lucia. |
What a stunning place in the world! Very insightful post!
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