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Drain down of gei wai 12 and 13
If you are a regular visitors to Mai Po in winter,
then you would have noticed that many of the fishponds are often kept
drained after fish harvesting. This is in order to oxidize any non-decomposed
organic material that may have built up on the pond floor, such as
fish feed or droppings from the fish. Air-drying of the floor of the
pond in this way helps to maintain the water quality in the pond
As with the fishponds, the gei wai inside
Mai Po have traditionally also been kept drained after fish harvesting
in winter to allow air-drying of the pond floor. However, as fish have
not been harvested at Mai Po since around 1996, air-drying of the pond
floor has not been carried out as often and this is beginning to have
an effect on the water quality in the gei wai.
As a result, gei wai 12 and 13 will be
kept drained for at least until the end of January, to remove the non-decomposed
material that have built up on the pond floor and which will otherwise
affect the water quality.
Reed cutting in gei wai 8
Mai Po, one of the five 1 ha blocks of reeds
will be cut and removed off-site this January. The aims will be set
up four blocks of reeds of different ages (plus a fifth block that
will be used as a control), and then to see if there are differences
in how birds use these different aged blocks. The eventual results
will tell us whether in future, the Reserve needs to set up blocks
of reeds of different ages to attract different species of birds.
If you have any questions about these works,
then please contact the staff at Mai Po by telephone on 2471-6306 or
by e-mail [maipo@wwf.org.hk].
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