|

Harbour Birds
The Spirit Store is not the only
place on the quay where the wildlfe thrives..... There
is a thriving ecosystem which brings many birds and
wildlife from all over the world to our doorstep. Hopefully
this area of the site will enlighten you with some of
the wonders of the Dundalk Bay. Check
out the Louth
Nature trust website for info on conservation
in county louth.
Frequent
Visitors
Spirit
Store Ecosystem
If you stand with your back to the door of the Spirit
Store on a clear day and look out you will see an area
of water in front, and, further back, an area of salt
marsh. To the left is a bridge under which flows the
Castletown River. Directly in front and to the right
Dundalk Harbour opens up to Dundalk Bay. To the far
left is a small wood mainly of Alder, Sycamore and Ash.
In the middle distance is an area called Ballymascanlon
Bay and in the far distance is a small mountain range:
Slieve Gullian on the left, the Black Mountain in the
middle, and Slievenaglogh on the right. The area as
a whole supports a large variety of wildlife. Ballymascanlon
Bay is designated both a Special Protection Area (SPA),
in particular for migratory birds, and a Wildfowl Sanctuary
(as is the area around Lurgangreen). As such it is protected
from development, hunting in the actual bay area, and
other human activities that could have an adverse effect
on the wild bird populations in the area. The whole
of Dundalk Bay is also a designated an SPA and a Ramsar
Site (i.e. it has been identified as internationally
important for waterfowl according to the criteria from
the Ramsar Wetlands Convention that took place in Ramsar
in Iran in 1971) and a candidate Special Area of Conservation
(protects flora and fauna, as opposed to birds) as well
as a proposed Natural Heritage Area. The area of Dundalk
Harbour is proposed for SPA designation.
What
all this means is that you are looking at a very valuable
ecosystem that supports a variety of wildlife in particular
migrating birds. The problem with protecting migrating
birds is that they must be protected through their migratory
path or flyway. There is little point in protecting
nesting corncrakes in Ireland only to have them shot
or netted while migrating over the European mainland
or in the Nile valley.
The
value in the area is not limited to its support of wildlife.
Wetlands such as Ballymascanlon Bay play a critical
role in flood abatement and pollution reduction.
Wetlands
prevent and reduce flooding by acting as a buffer when
there are tidal swells combined with heavy rainfall.
Instead of your house or road getting flooded, the hopefully
undeveloped floodplain takes the water. So an area of
marsh or wetland that seems apparently useless is in
fact playing a critical role. It would be tempting to
erect sea defence barriers or dykes and reclaim the
land in and around the harbour and Ballymascanlon bay
this could provide valuable housing and agricultural
land. However such a development would end up costing
a lot more than the initial gain because of inevitable
flooding as global warming progresses and sea levels
rise. As development on the north side of Dundalk progresses
this will continue to be a risk.
In
terms of pollution reduction, wetlands provide a veritable
biological engine for filtering and transforming harmful
pollutants into useful nutrients and harmless by-products
(it is no accident that the Dundalk dump was located
next to the bay). This is brought about by the degradation
of pollutants, firstly by microorganisms, then worms,
molluscs, bivalves, crustaceans, insects, amphibians
and finally by the birds themselves just watch
the industry of a flock of Dunlin or Godwit from the
harbour wall.
Birds
can be seen all year round from the quayside but the
habitat is most important as a wintering ground for
wetland birds migrating from Arctic Canada, Iceland,
Scandinavia, the high Arctic and even the Siberian Taiga.
In spring and autumn many passage migrants can be seen
and in summer breeding ducks and swans use the area
for nesting and raising young
The
most important species in the bay from a conservation
point of view (i.e. listed in Annex 1 of the European
Community Birds Directive as species of special conservation
concern in Europe) are listed below many of these
birds need not only space to feed (at the tide-line
or over the exposed mudflats at low tide), but also
a place to roost at high tide it is this latter
that is most threatened by development.
Whooper
Swan, White-fronted Goose, Golden Plover, Bar-tailed
Godwit as well as Red-throated Diver, Great Northern
Diver, Peregrine Falcon, Buzzard, Little Egret, and
Ruff if you look carefully all except the divers
may be seen from the quay wall.
Other
important species in the area include the following:
Great Crested Grebe, Cormorant, Greylag Goose, Light-bellied
Brent Goose, Shelduck, Widgeon, Teal, Mallard, Pintail,
Common Scoter, Red-breasted Merganser, Oystercatcher,
Grey Plover, Ringed Plover, Goldeneye, Knot, Dunlin,
Black-tailed Godwit, Curlew, Redshank, Mute Swan and
Turnstone. Also to be seen are Little Grebes, Coot,
Grey Heron, Moorhen, many gulls (Black-headed, Herring,
Common, Great Black-backed, Lesser Black-backed and
occasional terns (Common, Sandwich, Arctic). Over the
years many rare, scarce or birds atypical for the area
or time of year have been spotted around the harbour.
These include a Hobby, Spotted Redshank, Curlew Sandpiper,
Little Stint, Green Sandpiper, Common Sandpiper, Twite,
Bewicks Swan
also may be seen a variety of
passerines or songbirds including finches such as Greenfinch,
Chaffinch, Siskin, Redpoll that exploit the trees and
shrubs to the left of the quay. In summer Swallows,
Swifts and House Martins may be seen nesting in the
buildings on the quay and collecting insects over the
area marsh. All year round are Wagtails, various crows,
House Sparrows and a flock of feral Pigeons.
In
addition to this otters may occasionally be seen in
and around the bay though you are more likely
to detect their presence of their straints
- sweet smelling dark thin faeces usually deposited
prominently in their territory. Grey and Common Seals
may also be seen, though only rarely as far in as the
harbour. Doubtless the warehousing around the harbour
supports many bats.
On
the quayside you may see several boats and ships. Some
of these are engaged in various kinds of fishing activities,
some using drift net methods. Outside of the poor economic
performance of this kind of fishing, it is also potentially
devastating to both fish stocks and other wildlife (a
drift net that went astray off the coast of Scotland
ended up trapping at least 800 guillemots). Other boats
are engaged in extracting cockles from the seabed using
simple vacuum technology. Last year over 200 tonnes
were taken from the bay area. The impact of this is
unknown, however it is known that a flock of over 1000
Common Scoter and other diving birds that over winter
on the bay at least partially exploit the same food.
A
huge development project has been approved for much
of the area north of Dundalk and this will have several
major effects on the ecology of the bay and harbour.
It will increase runoff water from rainfall, increase
pollution entering the river and thence the bay, generally
increase a range of human activities that adversely
affect wild bird populations from dog walking to rubbish
dumping to the arrival of cats and rats, not to mention
the impact on the natural beauty. Looking out across
the harbour and bay we can see a few houses going up
just beyond the first dyke but on a clear day is still
breathtakingly beautiful hopefully it will remain
so after the development is complete.
Breffni
Martin
January 2005
All
photos in this section are copyright Breffni Martin
|