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Identify your ladybirds
Biodiversity
Links
Sudden
Oak Death Information - Important!
Nov. Dec. Jan. Feb. March. April. May. June.
December 12, 2006
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Biodiversity - A definition from:
World
Resources Institute, World Conservation Union, and United Nations Environment
Programme, "Global Biodiversity
Strategy," 1992:
"Biodiversity
is the totality of genes, species, and ecosystems in a region... Biodiversity
can be divided into three hierarchical categories
-- genes, species, and ecosystems -- that describe quite different aspects
of living systems and that scientists measure in different ways.
Genetic diversity refers to the variation of genes within species. This
covers distinct populations of the same species (such as the thousands
of traditional rice varieties in India) or genetic variation within a
populations (high among Indian rhinos, and very low among cheetahs)...
Species
diversity refers to the variety of species within a region. Such diversity
can
be measured in many ways, and scientists have not
settled on a single best method. The number of species in a region --
its species "richness" -- is one often- used measure, but a
more precise measurement, "taxonomic diversity", also considers
the relationship of species to each other. For example, an island with
two species of birds and one species of lizard has a greater taxonomic
diversity than an island with three species of birds but no lizards...
Ecosystem
diversity is harder to measure than species or genetic diversity because
the "boundaries" of communities -- associations of
species -- and ecosystems are elusive. Nevertheless, as long as a consistent
set of criteria is used to define communities and ecosystems, their numbers
and distribution can be measured..."
http://ceres.ca.gov/biodiv/Biodiversity/biodiv_def2.html
Perhaps a simpler explanation:
Biodiversity is the latest 'buzz' word in conservation. It is short for biological
diversity and it means 'The variety of life on Earth'. It is used as shorthand
for all of the different species and habitats in an area. Biodiversity is essential
to our lives in all sorts of ways, providing economic, social and environmental
benefits. Biodiversity also enriches our lives - it makes the world a better
place to live in.
http://www.rspb.org.uk/biodiversity/index.asp
So
how is this garden contributing to "Biodiversity"?
It started as a bramble covered hillside with Ash, Willow, Hawthorn
and Quickthorn as tree cover. There were no bluebells present. The
land was species poor. Originally it would have been part of the
farm with a path, which is discernable
today up to a well for the farm (this is on next doors land). This
was the state it was in in 1989 when this was bought (although the
land on the hillside was bought separately).
Clearing
the brambles and some of the trees was the next task, even a crop
of King Edward potatoes were used to clear the land. Most of the
snake bark Acers, Metasequoia, Ceanothus arboreus and Acacia were
planted from 1990 to 1992. Rhododendron hybrids, Magnolia, Halesia,
Spartium under planted these trees. Not a great deal was done with
this steep slope until 2002 when it was decided to maintain this
area more as a wildlife garden and not have any formality to its
structure.
Plant
species diversity has been the ethos and principle behind all recent
plantings, but even though the plants are not native ones, with a
careful choice to ensure they do blend into the overall ecosystem.
The majority of native species have also been encouraged, but still
managed to ensure they do not upset a balance which is still man
made. Do natural ecosystems actually exist now on this planet? In
this country it is doubtful, so one does not apologise for the overall
effect created.
By
carefully managing the plant species, it will be interesting to see
the effects on wildlife in general. An apiary of three hives has
been established and hopefully this will indirectly and directly
increase biodiversity not only in this garden, but in the surrounding
area.
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First hive |
2nd
flush of Red Campions |
2nd pool October 2003 |
Autumn colours 2003 |
Looking up to apiary |
Bird
feeders have now been set up over the winter period, this has
been done before 5 years ago. Then both green and spotted
woodpeckers were common visitors. Nuthatch, sparrow hawk, siskins
were also noted. It will be interesting if these birds start to
take an interest in the food provided. A bird bath has also
been set up
but as yet one has not noticed this being used, even in the very
dry spells of the summer. Perhaps the other pools provided sufficient
water and somewhere to "bathe". |
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The following features in this garden help wildlife:
- berry-bearing
plants have been planted.
- seed
heads
are left on plants to provide food.
- log-piles
have been provided for insects and other invertebrates.
- piles
of leaves are left to provide winter homes for insects and
nesting materials for hedgehogs.
- ivy
is allowed to climb trees.
- bird
feeders have been set up October 2003.
- bird
bath provided (July) 2003.
- all
weeds when pulled out are left nearby to rot.
- only
the following plants have been treated with insecticide due
to leaf cutters: Polygonatum multiflorum and Magnolia 'Star
Wars'.
- no
slug killer has been used on the "wild" part of the garden
only around the hostas in the more formal part of the garden
- several
pools have been created - the largest has been in existence
since 1994, the small pools on spring lines have been made
during June/July 2003.
These
points above need to be reviewed in relation to work done by
the BUGS project,
Department of Animal and Plant Sciences, Sheffield University.
For a summary of this research project - see thoughts.
This has been paraphrased and summarised (with permission)
from an article published in "The Garden" Journal of the RHS,
vol.
129, part
5, May 2004. This particular volume has been dedicated to Biodiversity
and gardening - a very significant contribution to this topic
- the RHS should be congratulated on highlighting and bringing
together such articles into one volume. Let us hope that further
articles are forthcoming in the near future.
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Logs left for insects and amphibians |
Crataegus berries for birds |
Silene and Digitalis seed heads left |
Hedera left to grow up trees |
Compost heap left on boundary |
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Bottom pool 24th Jan. 04 |
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Flowering Hedera late in the year for the bees to work |
Seed and peanut feeders |
Coal tit eating seeds |
Coal and blue tits feeding on the newer larger
feeders |
At least 8 birds on feeders Dec. 14th 03 |
Nov.
17th 03 - the birds are eating the bird seed at such a rate
that the feeders need filling every day, amazing! Coal and
blue tits are the
main visitors, but finches are frequent. Around the feeders
there is always a robin, blackbird and thrush.
The
largest pond is now being cleaned of surface growth and leaves,
ready for the frogs and toads which have appeared as early as January
in previous years. All material from the pond is left on the
edge of the pond for
any aquatic animals to easily find their way back. (top)
Dec.
14th 03 - frogs are already in the largest pond. The birds
mostly tits and finches are eating the seeds from the feeders
at an
amazing rate - the feeders have to be filled almost every day
and 8 fat balls disappeared in one week. By the way there are
no squirrels feeding on these yet! A black bird is a constant
visitor beneath the feeders including two cheeky robins. Collared
doves also visit to take some of the seed. Bees are madly
working
the Mahonia if it is sunny for a few hours around midday. I
Red Admiral (Vanessa atlanta) seen on Mahonia.
Dec.
23rd 03 - miserable with heavy sleety showers, but as a compensation
the bird feeders have been incredibly busy. Very difficult
to give accurate figures of how many birds have visited, but
the surrounding bushes have been like an aviary. One had the
pleasure of watching these birds and it was especially pleasing
to see the Greater Spotted Woodpecker (Dendrocopus major) consuming
peanuts and attacking the fat balls. The following species
were noted at 3 p.m. over a half hour period:
Greater
Spotted Woodpecker (Dendrocopus major) |
Collared Dove (Steptopelia
decaocto) |
Dunnock (Prunella
modularis) |
Wren
(Troglodytes troglodytes) |
Robin (Erithacus
rubecula) |
Blackbird
(Turdus merula) |
Song Thrush
(Turdus philomelos) |
Blue Tit
(Parus caeruleus) |
Great Tit
(Parus major) |
Coal Tit
(Parus ater) |
Nuthatch
(Sitta europaea) |
Chaffinch
(Fringilla coelebs) |
House Sparrow
(Passer domesticus) |
Jay
(Garrulus glandarius) |
Magpie
(Pica pica) |
It
must be borne in mind that not all of the above were eating
from the feeders but were seen around in the close vicinity.
Dec.
30th 03 - Solitary Greenfinch (Carduelis chloris) bullies his
way with all the other birds visiting the feeders. Bumble Bee
(Bombus terrestris) seen flying from Prunus subhirtella in
Criccieth. (top)
Jan.
2nd 04 - Starling (Sturnus vulgaris) seems to have
got the hang of attacking the fat balls! Bumble Bees very active
on
the Prunus subhirtella in Criccieth - at least 6 working
the blossom. Honey Bee (Apis mellifera) very active on the Mahonia 'Charity'
again.
Jan.
4th 04 - Finches in general seem very fond of eating the flowers
and buds of Prunus subhirtella. Solitary moth seen several
evenings
- last night 6.00 p.m. and previous night. A flock of Long-Tailed
Tits (Aegithalos caudatus) descended on the peanut feeders
(at least 12 birds).
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Perhaps this
is the Mottled Umber (Erannis defoliaria) - only a guess
and if you can confirm or identify, please contact. |
January 26th 2004 - The weather has really
turned cold and looks like snow. On Sunday (Jan. 24th) 3 buzzards
were above the garden mewing for well over an hour. Honey bees
are active whenever there is sunshine and not too much wind.
Again on Sunday they were working the Galanthus clumps throughout
the garden. No bumble bees have been seen yet, although in a
Criccieth garden about 2 miles away, bumble bees have been very
active on Mahonia japonica/bealii. The birds eat frantically
and no new species have been noted, although when peanuts are
spilt when filling the feeders 2 jays come down on the patio
area. The long tailed tits are fascinating to watch, little lumps
of feather and are quite tame as well.
A
further development to increase biodiversity in part of this
garden, has been to change the nature of the lawn along side
the road. At the moment, this is mowed regularly as a more
formal lawn
and due to treatment with fertilizers containing herbicides,
there are hardly any other species other than Festuca rubra.
Even Bellis perennis has been successfully eradicated. This
is being redressed and will be managed as a wild flower grassland.
The first step has been to heavily dress the area with a mixture
of crushed limestone and magnesium limestone to alter the overall
pH from an average of 6.0 to hopefully over 7.00. This will
allow a wider range of wild species to be planted and maintained.
This has now been left to settle until the spring when wild
flower
plugs will be planted. (top)
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Frog
spawn 1st Feb.. 2004 |
Frog spawn all at one end of pool |
Frogs ready to spawn |
Frogs everywhere |
Frogs mating |
February
1st 2004 - Spring is here!! - Frog spawn and frogs mating -
straight after last weeks snow (very little here), ice and
hard frosts. Camellia flowers lost due to the frosts, but are
quickly being replaced by new ones. Hamamelis and the Daphne remain unscathed as does Sarcococca confusa. Galanthus
nivalis is at it's best and when the sun comes out, the bees fed on
its pollen. The same bird species continue to feed voraciously!
February 6th 2004 - At their height (2nd - 3rd) there were
well over 100 frogs mating in the pool, there is much more
frog
spawn
than
usual produced. Today there are only a few frogs left(Feb.
9th - only one adult frog seen).
February 15th 2004 - newts seen coming up for air in pond.
Few years back all the tadpoles disappeared - was it because
of the newts eating them? This was a possibility so I am told.
Will it happen again? Bumble bees (3) seen foraging in the
garden in the early afternoon - don't know which species though.
Honey bees everywhere, working everything in flower; most collecting
nectar rather than pollen, the exception being those bees working
the Crocus. Birds very active, no new species but a wren seemed
oblivious to my presence for most of the afternoon. A number
of daffodils are now opening. The Galanthus are nearly over
and looking bedraggled.
22nd February 2004 - first cut for lawn.
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Starling on fat ball |
Blue tits on feeder |
Robin feeding on peanuts |
Hamamelis and birds on feeder |
Birds
on feeder 27 Feb. 04 |
27th
February 2004 - previous week very cold and culminating in
this heavy snowfall. Difficult to keep up with the demands
of these birds to keep them fed! (top)
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Bird box 1 - put up 1st March 04 |
Bird box 2 - same date |
Overlooking village |
Blackcap
21st March |
Goldfinch
21st March |
Better
late than never, first two bird boxes set up on the 1st
of March 2004. They face north and are over five feet up an
established
Fraxinus excelsior trees. There are even instructions for the birds
to read! 8th March, three more boxes set up.
18th
March 1000 Galanthus nivalis have been bought and planted in the
green.
21st March - New bird species noted at feeding stations - a
Goldfinch (Carduelis carduelis) and a Blackcap (Sylvia
atricapilla).
The usual species are still vigorously feeding. Nuthatch and
woodpecker
made
a visit
to
the peanut
feeders.
Paths
have been tidied and wooden edging using wood from managed
woodlands has been used. This is to stop "creep" of soil due
to the angle of the slope of the garden and in the past path
have had a tendency to "disappear" after a while.
April
- has been an incredible mixture of weather patterns, gales,
frost, sleet, frost, snow on mountains, mild/warm. Even at
the end of April the wind has turned northerly - yet again
and now the temperature is 11-13°C during the day, but
no frosts at night. It is disturbing to see that the amazing
quantity
of frog spawn in the pond has totally failed and probably due
to the hard frosts in March. Interesting to see that the Phenology site
with an excellent interactive section on climate change in
your garden mentions this - well worth a look.
A house martin
was seen on the 18th of April, a Cuckoo heard on the 20th
April and the Chiffchaff has been singing since the beginning
of the month. Honey bees have been extremely active in any
sunny spell even if the temperatures have been cold. Three
species of bumble bee have been plentiful and very active
this month. Some of the larger areas of grass on the side have
been strimmed on the side (24th April), areas around young
plants have been cleared to ensure that competition does not
affect them. The flow of water to all the pools is now much
reduced due to the lack of rain and growth of plants especially
the trees.
Much tidying has taken place, dead wood removed
and all such material has been collected and placed on one
boundary to provide more habitats. Red campions are beginning
to flower. None of the nesting boxes have been used as yet
although a pair of thrushes have nested in the usual Camellia bush by the road. They can be seen going in and out of this
bush on a regular basis. They have used this bush for the past
five years. Orange Tip Butterflies (Anthocharis cardamines)
have been common on warm sunny days and the Bee fly (Bombylius
major) has been seen three times.(top)
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Bombylius
major or Bee fly - parasitic on bumble bees |
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May - the
weather has been a mixed affair, some very dry periods resulting
in having to resort to watering to save plants on the slope.
The springs however have not dried up but with very much reduced
flow rate. The grass on the slope has been cut twice, first
time with a strimmer, the second with hedge shears. This has
allowed one to avoid cutting the leaves of the daffodils.
June - again the weather has been
difficult - a period of severe drought where the spring lines
have stopped flowing completely. The Embothrium and Cornus
kousa has been spectacular and have been
worked by a number of bee species and other insects. Planting
in general terms has been somewhat curtailed with the result
that the area at the back of the house is like a plant nursery.
At the end of this month the rains have at long last come but
associated with very high winds. These have damaged a number
a plants notably a beautiful specimen of Toonia whose top has
snapped off. Birds in general have become very quite coinciding
with their molting period - quietness is almost unsettling
compared to the considerable din of the bird song previously. The
buzzards wheel overhead and nest nearby. The bees
continue their success and honey has been drawn and is now
for sale (absolutely delicious and that is no exaggeration).
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Polygonatum being pollinated by Bumble bee |
Iris
ensata being pollinated |
Cornus
kousa being pollinated |
Lychis
coronaria being pollinated |
Surface of pool with high biodiversity |
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P.
S. Everyone with collections of Rhododendron,
Viburnum, Camellias, any collection of trees
should be vigilant and be aware of the symptoms of Sudden Oak
Death caused
by Phytophthora
ramorum. For these details, look at the Defra and Forestry
Commission web sites. Hopefully this will not be
on the scale of the Dutch Elm Disease or worse. At the moment,
very
little is known about its distribution in this country in our native
trees. It seems to be prevalent in commercial nurseries - over
300 cases recorded with the disease in the UK. This has the potential
of being really serious and highlights the fact that we have been
far too lax with import of plant material into this country - will
we learn a lesson from this? (I doubt it!). Now there seems to
be another Phytophthora, unknown in any other country
and seems to attack beech and Rhododendrons. This has been named Phytophthora
kernovii. Details are again on the Defra web site. This is
considered to be a greater threat than Phytophthora ramorum. |
"Those who contemplate the beauty of the
earth find reserves of strength that will endure as long as life
lasts. There is something infinitely healing in the repeated refrains
of nature - the assurance that dawn comes after night, and spring
after winter" - Rachel Carson. |
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