By UK guest
blogger Dr Claire Goodwin. Claire is a marine biologist at National Museums Northern Ireland. Her work involves SCUBA diving survey projects
and the study of marine invertebrates – she has a particular interest in sponges.
She has recently been on diving expeditions with the Falkland Islands-based
Shallow Marine Surveys Group, helping them document the
sponges of the Falkland Islands and South Georgia - research highlights are here.
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| Black-browed Albatrosses on what Darwin called 'miserable islands'. Photo Claire Goodwin |
Here’s hoping Prince William enjoys the Falkland Islands more
than Charles Darwin did. In March 1834,
HMS Beagle arrived in ‘these miserable islands’ with a population ‘of which rather more than half
were runaway rebels and murderers’. Darwin saw an ‘undulating land with a desolate
and wretched aspect…everywhere covered by a peaty soil and wiry grass, of one
monotonous brown colour’ which ‘can boast of few plants deserving even the
title of bushes’.
Exploring the islands on horseback with Gauchos, he found ‘nothing
could be less interesting than our day’s ride’, although maybe his mood was not
improved by the hail and rain they tramped through and lack of sleep as ‘the
ground on which we slept was on each occasion nearly in the state of a bog, and
there was not a dry spot to sit down on after our day’s ride.’ He didn’t think
much of the overall climate either - comparing it to the mountains of North
Wales, only with more wind and rain.
Having visited the Falklands for research over the last few years, I
can agree with Darwin about the windy weather, but found its wildlife much more
interesting and its human inhabitants much more hospitable. However, I did have
the advantage of escaping underwater from any inclement conditions as I was
participating in diving surveys with the Shallow Marine Surveys Group.
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| Exploring the shallows. Photo Claire Goodwin |
The Falkland Islands are situated in the South Atlantic roughly 400
miles from the coast of Argentina and 850 miles north of the Antarctic Circle.
The archipelago includes two main islands, East and West Falkland, and 778
smaller ones. It offers a wide variety of dive sites, but the shallow marine zone remains largely
unsurveyed. Much of the coastline around the islands is rocky, and beneath the waves, swoops into a series of dramatic pinnacles, gullies and ledges.
What the Falkland archipelago lacks in terrestrial trees it makes up for
underwater. The giant kelp, Macrocystis pyrifera, forms long-leaved
stands which reach several meters in length, trailing on the surface and
forming a trap for unwary diver legs and boat props. Tree kelp (Lessonia trabeculata)
is found in deeper water and, as the name suggests, its holdfasts are thick and
tree-like: ideal for grabbing onto in a swell but tricky to manoeuvre around
when surveying. Underneath the kelp, the bedrock is covered with colourful
splodges of encrusting invertebrates.
SMSG are conducting SCUBA surveys trying to document the shallow
underwater species and habitats of the island, many of which may be new to
science – on a survey of the Jason Islands in 2008 we found 12 new species of
sponge, and we’re in the process of describing several new species from a
second expedition. Being based on the expedition yacht Golden Fleece
allows the group to reach far-flung corners of the islands such as BeauchĂȘne
Island – some 40 miles to the south of the main group.
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| SMSG vessel Golden Fleece. Photo Claire Goodwin |
The productive shallow water environments are one reason that the
Falkland Islands are globally important for bird life. The penguins, which
Darwin observed crawling through the tussock grass and diving ‘like a fish
leaping for sport’, comprise five different species
including 30% of the world’s population of Gentoo penguins (Pygoscelis
papua). Two-thirds of
the world’s populations of black-browed albatrosses are also found here, and we
often encountered vast colonies with birds sitting on sandcastle-like mud nests
or wheeling overhead when we went ashore from the survey vessel.
Less friendly were the Striated Caracaras (Phalcoboenus australis)
or Johnny Rooks as they are locally known, which frequently dive-bombed us. As
Darwin noted these ‘extraordinarily tame and fearless’ birds ‘are very mischievous
and inquisitive; they will pick up almost anything from the ground’. We had to
be on guard of our cameras when they were around, and Darwin’s party
experienced several losses including ‘a large black glazed hat…carried nearly a
mile’ and ‘a small Kater’s compass in a red morocco leather case which was
never recovered’. Despite being noted by Darwin as ‘exceedingly common’, the
species is now listed as ‘near threatened’ by BirdLife International. Its
decline is partly because its habit of attacking lambs and weakened sheep has
historically brought it into conflict with sheep farmers.
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| Rooks contemplating petty thievery - or lunch. Photo Claire Goodwin |
From Johnny Rooks to the endemic Hairy Daisy, both above and below
water the Falklands have many species and habitats of importance. Much research has been undertaken since
Darwin’s day – for example the grassland he dismissed as ‘monotonous’ has been
found to harbor 175 species of plant, including 14 endemic species. The work of
the Shallow Marine Surveys Group and Falkland Conservation continues to
document and study the fascinating wildlife of these Islands. We hope they’re
joined in the near future by researchers and students traveling with the new Beagle
– and traveling with ample woolies and waterproofs!












