Congratulations
to Nick Oliver! Nick has won first prize in the ‘Animal Behaviour:
(Birds)’category of the BBC
Wildlife Magazine & The Natural History Museum Wildlife Photographer of the Year
2003 competition. His superb
action photograph of ‘Barn Owl, a
vole’s eye view’ and technical details can be viewed on the Natural History Museum website
at www.nhm.ac.uk/.
Terrestrial
Bugs Recorder appointed. Nigel Cuming
has been appointed as the SNS Recorder of terrestrial Heteroptera. His address
is 33 Holly Road, Stanway, Colchester, CO3 5QL. Welcome Nigel!
Thank
you Dave Thurlow and Lee Woods. Both have retired as SOG Bird Recorders.
Welcome
Dave Fairhurst and Keith Bennett.
They are replacing Dave and Lee as SOG Bird Recorders.
Suggestions
of topics for Conference 2005 are
invited. Please send them to any
member of Council.
New
cases of Sudden Oak Death (SOD) have been confirmed in Cornwall.
Nine trees at three sites in Cornwall have
now been found to be infected with Phytophthora ramorum, DEFRA and the
Forestry Commission reported in early February. The trees affected are four holm-oaks,
a turkey oak, two beech trees, one sweet chestnut and a horse chestnut. In the
case of the sweet chestnut and the holm-oak trees, the damage was only on
leaves.
Recent cases, found on beech trees, a turkey oak and a horse chestnut, exhibit infected bark in the form of conspicuous “bleeding cankers”. There are two other trees in Europe known to be infected - one in Sussex and one in the Netherlands. They are of two different American species of oak.
At one of the sites in Cornwall, a second new species of Phytophthora, which has not yet been identified, is causing disease on rhododendrons and a nearby beech tree. DEFRA and the Forestry Commission are assessing this new type of pathogen and whether the risk differs in any way from that posed by P. ramorum. In the majority of the 300 other outbreaks in the UK, which have mostly been confined to rhododendrons in nurseries and garden centres, eradication has been achieved by immediate destruction of affected plants. Imports from Dutch horticulturalists are thought to be responsible for the outbreaks in the UK and Defra is under pressure to ban imports from the Netherlands.
Extract
from biodiversity group’s annual stock take. “ The status of farmland Biodiversity Action Plan (BAP) priority
speciesand habitats is improving but
plant diversity in fields and field margins continues to decline. It is too
soon to say whether the apparent stabilisation shown by the latest
farmland bird population figures reflects a long-term trend.”
(From ‘Working with the grain of nature: The England Biodiversity Group’s annual stock take 2002-3’ to be found on www.defra.gov.uk)
GM
could worsen plight of farmland birds.
Dr Roger Clarke of the Hawk and Owl Trust has been investigating the diet of
Hen Harriers by analysing their pellets,
collected from roosts in Wicken Fen. The pellets contain feathers and other
undigested parts, such as bill parts and claws, of the songbirds on which the
harrier feeds. They also contain the seed grains on which the prey had been
feeding which the harrier cannot digest. The analyses enable a correlation to
be established between the prey and its food. They show that the most common
foods of the songbirds are the common weeds of cultivated land, such as
knotgrass, fat-hen, pale persicaria and black-grass. All of them are annual
arable weeds of the modern farm that would be killed off by the herbicides
proposed for use in association with GM crops.
Naturalists
aren’t always right! DNA analysis of
faecal samples believed to be pine marten‘scats’
has shown that 18% were actually from foxes and foxes, pine martens and otters
are largely nocturnal, so they often monitored by faecal surveys.
Autumn 2003 saw a major influx of Pallas’s Warblers at many seaside locations in Britain, including Suffolk. This tiny song bird normally winters in China, India and
south-east Asia.
Indications
of a decline in numbers of adders, Vipera berus, are shown by a status assessment carried out in 2003
by Froglife in partnership with English Nature.
In contrast, the common frog, Rana
temporaria, showed no sign of a
status change despite concerns over mass mortality events.
A
second species of elm bark beetle has
been reported in Kent, Middlesex and Essex. The pygmy elm bark beetle,Scolytus pygmaeus,is much smaller than the elm bark
beetle, Scolytus multistriatus, and can infect much younger elm trees,
which currently survive in hedges.
First
Brecks record of soldierfly.The fourth British record of the soldierfly Oxycera
leonina, was made by members of the Dipterists Forum summer field meeting
2003 on alders in the brecks beside the lake at Lynford Arboretum, Thetford Forest. The
snipe fly Chrysopilus laetus,
an even more remarkable record, was seen in the grounds of Hengrave Hall.
© 2004 Suffolk Naturalists' Society