Intake Reed Beds
from the hill shows the early construction of the undulating retaining
step was to add a level layer of sand, which in turn formed a
soft base for laying on the butyl rubber. All four of the 250m2
compartments were independent of one another.
planted reed bed showing the black pipes (made from recycled material)
used for spraying the river water evenly over the surface of the
Outdoor Breeding Ponds
showing the small, approximately five square metre ponds. They
were lined by recycling the existing plastic liner previously
used for holding the reed stock prior to replanting in the intake
used as boundary were ex-coal mine props recovered from a nearby
was picked from the large amount of limestone donated from Cadeby
Hatchery & Aquatic Ecology Centre
6.3.1 Barrel tanks
barrels originally used for holding shoe polish. After cleaning
they were laid on their side in a wooden rack with the upper section
cut out. Finally, taps were inserted in the base where the flowing
water discharged into a common gutter.
6.3.2 Suspended water bags & Bottle tanks
design considered the use of 4 ply butyl rubber stitched and suspended
on a steel scaffolding frame. The main advantage of the bags was
their ease of assembling and transport.
In the background
can be seen the 'bottle tanks' which were empty wine bottles siliconed
together on to a plate glass base.
6.3.3 Sleeper & Bath tanks
In the foreground
are the 'sleeper tanks', effectively, ex-railway sleepers providing
a wooden frame with the inner lined with rubber.
initiative in partnership with Hull International Fisheries Institute
saw the continuation of the theme of recycling by the use of old
baths included in the system below. This was part of the analysis
of watercress and other aquatic water plants as a filtration mechanism
for Tilapia culture.
Aquatic Ecology Centre
of the centre that also incorporated a working hatchery
third of the building was dedicated to demonstrating freshwater
ecology with a laboratory for children to identify pond life.
helped to compile educational materials for visiting children.
The exhibit above illustrates the different species of freshwater
fish cultured in the hatchery and that are present in the local
(n.b. It also worthwhile noting that the glass for the aquariums
was reused from an office block refurbishment in a neighbouring
the Aquatic Ecology Centre
shape of the pond is achieved first by the use of mechanised machinery.
carpet of bentonite panels requires an overlap of 10cms per roll.
Following completion of the the liner, a 10cm layer of subsoil
a protective buffer zone between the final topping of limestone
The trench around the top of the pond is used to anchor the liner.
coated gabion baskets being erected and placed on a bed of concrete
above the bentonite/subsoil base
pond to be completed was on 15 September 1994 volunteers worked
together simultaneously laying benonite and installing and filling
gabion baskets with stone and broken bricks. The open section
of the wooden monk can be seen in the foreground
'dry' pond illustrating the internal gabion filled structure.
The section between the gabion wall and the outer pond bund was
infilled with subsoil and planted with marginal plants
wooden monk or wooden sluice was constructed by trainees from
a 'sustainably managed' source of oak, to a historical design
undertaken by European Monasteries (monks - hence the name).
Outlet Reed Bed
reed bed initially comprised of a 20 cm deep scrape which was
lined with donated plastic film and utilised as a holding area
in preparation for the transfer of reeds.
(n.b. the liner was later reused for the breeding ponds)
Drainage Authority informed the Earth Centre of a large amount
of reeds freely available, due to drainage maintenance being undertaken
at Scunthorpe. The reeds were excavated and transported to the
Transferring the plants to the intake reedbed system. On the upper
right of the picture is a small stand of common reeds (Phragmites),
which were temporary fenced before earthmoving began.
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