SlugWatch UK seeks to map alien ‘Spanish Slug’ distribution

SlugWatch UK is on a mission to discover how widespread the ‘Spanish Slug’, Arion vulgaris, has become since first being identified in the UK in the early spring of 2012.

http://www.slugwatch.co.uk/

This species is more damaging than native kinds, and is reported to be strongly resistant to existing  molluscicides as well as out-competing native species.

The website provides useful information about slugs and their biology, and provides an identification guide for 18 of the approximately 30 species of slug in the UK. If there’s a weakness it’s that in attempting to simplify matters, the documentation does not make it clear whether there are other species that may readily be confused with those for which pictures and descriptions are provided, and this may lead to unintentional misidentifications. The reality is that some species have to be dissected to get a definitive ID.

The downloadable guide (which is better presented than the one embedded in the website itself) is somewhat hidden, but can be obtained here:

http://www.slugwatch.co.uk/wp-content/uploads/2013/09/Identification_guide.pdf

It is, however, not as clear as it perhaps needs to be on the differences between the Spanish Slug and the similarly large native Arion rufus/ater, so further research is advised for anyone wanting to follow up on this project.

Posted in Invertebrates, Molluscs, Recording | Leave a comment

Danson Park July records

Last month’s records of wildlife sightings in Danson Park from John Turner. We are always pleased to receive records of observations. Email to JonathanRooks@virginmedia.com.

We keep copies of reports in a cloud folder at https://app.box.com/s/b9fbraryiqo4h4wblbf6

 

04/07/2014 07/07/2014 15/07/2014 21/07/2014
a.m. a.m. a.m. a.m.
Great-crested Grebe 3+1jiuv 2+2juv 2+3juv 2+4juv
Little Grebe 2 1 1 1
Cormorant 4
Heron 2 1 3 3
Mute Swan 2+3juv 2+3juv 2+3juv 2+3juv
Canada Geese 46 28 41 47
 Grey Lag Goose 2 2 1 1
Egyptian Goose 1 1 5 6
Mallard 44+7juv 84+8juv 53 96+8juv
Gadwall
Tufted Duck 2 2 1
Kestrel
Sparrow Hawk
Peregrine Falcon
Moorhen 11 4 7+1juv 9+2juv
Coot 59 52 63+3juv 52+9juv
Common Sandpiper
Black-headed Gull 18 34 49 27
Common Gull 1
Lesser Black Backed Gull 1 1
Herring Gull 1
Wood Pigeon 17 19 10 15
Stock Dove 2 3 2 4
Collared Dove
Ring-necked Parakeet 2 2 2 3
Kingfisher
Green Woodpecker 1 1
Greater-spotted Woodpecker 1 1
Nuthatch 1 1
Pied Wagtail
Grey Wagtail 2
Wren 7 6 6 5
Dunnock 4 2 3
Robin 2 6 10 9
Blackbird 6 9 8 7
Mistle Thrush 1
Song Thrush 1 1
Blue Tit 3 3
Great Tit 3 3 3
Coal Tit
Long-tailed Tit 3
Starling 23 23 25
Jay 1
Magpie 1 6 6 4
Crow 52 82 64 42
Jackdaw
House Sparrow 2 3 1
Chaffinch 3 6 5 1
Greenfinch 2
Goldfinch
Goldcrest
Blackcap 3 3 2 2
Chiff-chaff 1
Willow Warbler
Sedge Warbler
Swift 2 7 10
House Martin
Swallow
Grey Squirrel 1 8 10 5
Brown Rat
Terrapin 1 3
Speckled Wood 8 8 10 6
Peacock 2
Small White
Large White 9 19 11 3
Orange Tip
Tortoiseshell 2
Green -veined white 1
Meadow Brown 10 19 5 9
Large Skipper 1
Small Skipper 7 6 1 1
Comma 2 2
Ringlet 1
Red Admiral 2
Gatekeeper 1 9
Common blue 1
Common blue damsel fly 7 24 16 3
Blue tailed damsel fly 3 5 6
Red eyed damsel fly
Azure winged damsel fly 2 1 3
Emperor 3 2 1 2
Broad bodied chaser 3 1 2 1
Posted in Bird watching, Recording | Leave a comment

Four out of 5 top search engines put Bexley Wildlife first

BexleyWildlife.org – or the associated Facebook page – now tops the list of suggested sites when ‘Bexley wildlife’ or ‘wildlife Bexley’ is put into the Google, Bing, Yahoo or AOL search engines, coming up ahead of the biodiversity pages on Bexley Council’s own website which used to head the rankings.

Ask (Jeeves) puts our facebook page fifth, behind some rather bizarre search results, with the Council pages not even making it onto page two of the selected sites.

Of course this is not an end in itself, but does help us deliver on our objective of being the ‘go to’ hub for information about wildlife, the environment and related activity and groups in the Borough.

The essential follow-on from that, of course, is that our primary aim in all of this is to get more people more interested and more involved in these matters, and to help sustain that engagement. By doing so we hope that a greater body of muscle, knowledge and opinion can be mobilised when needed, both to get practical tasks done and to argue more successfully for the right policies and against the wrong ones with various opinion-formers and decision-makers. There is more chance that people will fight to protect something they care about rather than something they are indifferent to.

By making things happen we can sometimes leverage in outside help, such as this JPMorgan work-party at Thames Road Wetland. Others may get involved with protecting and enhancing the environment in Bexley by joining an existing local group or starting a new one, or through a London or national level society. By co-ordinating and publicising our efforts we can increase our impact.

By making things happen we can leverage in outside help, such as this JPMorgan work-party at Thames Road Wetland. Others may get involved with protecting and enhancing the environment in Bexley by joining an existing local group, by starting a new one, or through a London-level or national level organisation. By better co-ordinating and publicising our efforts, and making sure we welcome and keep communicating effectively with new recruits, we can increase our impact.

We are still in the foothills at the moment, and think that there is a great deal more potential out there. We would be grateful if readers could alert friends and relatives to the Bexley Wildlife platforms, and if those running groups could keep reminding their members about them. Hopefully if they see there is more going on across the Borough, and that we are delivering positive results, they will be more inclined to keep renewing their memberships – as well as getting actively involved if they aren’t already.

Topping  the ‘pops’ on Google is a start, but it’s getting more people on the ground that will make the difference.

Posted in Uncategorized | Leave a comment

Reintegrating Bexley’s Rivers

An interesting opinion piece published on the Thames21 website by Theo Thomas in which he discusses the need for Sustainable Urban Drainage Systems (SUDS) and how they can be retrofitted giving us more environmental areas, cleaner rivers and reducing the risk of flooding.

Sadly he makes the point that laws on the requirement for paving of drives to require water permeable surfaces is not being applied. We see this in Bexley too and also the Council doesn’t seem to be enforcing the requirement for SUDS to be applied at new developments.

http://www.thames21.org.uk/2014/07/piecing-our-rivers-back-together/

Posted in Rivers, Sustainable housing | Leave a comment

Thames Tideway Tunnel will reduce pollution

There are interesting videos on the Thames Tideway Tunnel website explaining the need for this major engineering project which will reduce the pollution of the Thames.

With sewage and other rubbish in the Thames taking weeks and sometimes months to reach the sea, the overflows are a major problem. Increasing flash flooding and the attendant overspills caused by climate weirding are just adding to the problem.

This major new sewer will prevent the spillage of millions of tonnes of sewage into the tidal section of the river every year. It is expected that this project will tackle the problem of overflows from the capital’s Victorian sewers for at least the next 100 years, and enable the UK to meet European environmental standards.

A more ‘yoof’ orientated video with a greater emphasis on poo….

Posted in Rivers | Leave a comment

Lesnes ant identified as Temnothorax nylanderi

Some very small ants, spotted on July 26th making their way up a stunted Oak tree on the Lesnes Abbey Woods heathland, and collected by Duncan Sivell of the British Museum of Natural History, have been formally confirmed as Temnothorax nylanderi by Ant recorder Mike Fox of the Bees, Wasps and Ants Recording Society.

A worker Temnothorax nylanderi ant, foraging solo as is typical of the species, on an Oak tree on Lesnes Abbey Woods heathland. (Photo: Mick Massie)

A worker Temnothorax nylanderi ant, foraging solo as is typical of the species, on an Oak tree on Lesnes Abbey Woods heathland. (Photo: Mick Massie)

The national distribution map for the species shows it concentrated in the south east of England, to the south west and north east of London. According to London Natural History Society’s Mick Massie ‘It is not terribly rare in the south east, but is not often seen or photographed.’ Mick’s photos will be used to illustrate the species on the BWARS website, where the existing information about it can be seen here:

http://www.bwars.com/index.php?q=ant/formicidae/dolichoderinae/temnothorax-nylanderi

Posted in Ants | Tagged | Leave a comment

LWT begins management at superb Braeburn Park site

London Wildlife Trust has now begun work at the fabulous Braeburn Park (aka Old Orchard/Gun Club) site on the other side of the railway line from Hall Place and Crayford Rough, and just up the road from Crayford railway station. Rich in wildlife, some of it rare in Bexley or London as a whole, the area appears to be a mystery to even the most ardent nature-lovers in the Borough, but this will hopefully begin to change soon.

A party of LWT  staff, new volunteers, Councillors, Council Officers, English Nature and Bexley Natural Environment Forum representatives toured the site yesterday afternoon (July 30th) to hear more about the challenges and plans for management of this former quarry and landfill location.

Braeburn tour participants included former Bexley Biodiversity Officer John Archer (second left), Parks, Open Spaces and Nature Conservation Officer Mark Taylor (third left)  and LWT's head of Planning and Policy Mathew Frith (second right), seen here looking at the geological SSSI by the housing estate access road.

Braeburn tour participants included former Bexley Biodiversity Officer John Archer (second left), Parks, Open Spaces and Nature Conservation Officer Mark Taylor (third left) and LWT’s head of Planning and Policy Mathew Frith (second right), seen here looking at the location of the geological SSSI by the housing estate access road. (Photo: Chris Rose)

The biggest hurdle to date has been the 15 year struggle to overcome the liability issues arising  from the previous site uses, such as ground contamination, a problem eventually solved by the Land Trust – which has expertise in this regard – taking over ownership, and appointing LWT  to do the day-to-day work.

The Braeburn Park site runs up the south slope of the Cray valley, then down the back and round a new housing estate to the Dartford Borough/Kent border. It grades from scrub, uphill into secondary Oak woodland and Hazel coppice – one path running through a phenomenally deep ravine – then sandy Broom-dotted slopes surrounding the new housing estate, with more woodland and a large bund screening industrial facilities by the old A2. A geological SSSI occurs in one corner, where quarrying has exposed various rock strata. The total area is some 25 hectares. There are fine views across the valley floor to the north slope, with Bexleyheath town centre sitting atop it in the distance.

One of the beauties of Braeburn is the close proximity of sandy, acid soil, and chalk influences, reflected in the flora, which includes Hare’sfoot Clover (Trifolium arvense), Wild Basil (Clinopodium vulgare), Wild Marjoram (Origanum vulgare), Hairy St John’s-wort (Hypericum hirsutum), Narrow-leaved Bird’s-foot Trefoil (Lotus glaber), Vervain (Verbena officinalis), Hemp agrimony (Eupatoria cannabina), Upright Hedge-parsley (Torilis japonica), Three-veined sandwort (Moehringia trinervia) and Black Bryony (Tamus communis). Here and there garden throw-outs such as Bearded Iris, Crocosmia and even Bergenia can be spotted. Only recently BNEF’s Chris Rose found Long-stalked Crane’s-bill (Geranium columbinum), currently the only known site for it in the Borough.

Bare areas of ground, including a sand pit, help make the site important for burrowing insects and those that enjoy the heat. Various notable species occur such as Drilus flavescens, quite a scarce beetle, found largely on chalk grasslands in southern England and also brownfield in the Thames Gateway area.

Drilus flavescens, an uncommon beetle, is an indicator of the importance of Braeburn park - and brownfield sites - for invertebrates. (Photo: Tristan Bantock).

Drilus flavescens, an uncommon beetle, is an indicator of the importance of Braeburn Park – and brownfield sites – for invertebrates. (Photo: Tristan Bantock).

Slow Worms and Common Lizards abound, whilst significant areas of scrub attract a host of smaller bird species including Song Thrushes, Lesser Whitethroat, Whitethroat, Blackcap, Goldfinches and Greenfinches. A Kestrel is occasionally seen. There is a report of a Bullfinch, now rarely seen in the Borough, being heard here lately.  Rabbits have helped keep some areas more open.

LWT’s site manager Shaun Marriott will be at Braeburn 3 days a week, and has already started work, with locals Richard and Graham, a couple of early volunteers, on creating steps up steeper sections of paths, and dealing with Bramble stems encroaching across many of the tracks. There will be plenty of opportunities to get involved with this site, including at weekends. Details should be available on BexleyWildlife’s calendar page soon.

We look forward to LWT bringing sensitive and expert management to bear in order to maintain and enhance the biodiversity value of this large Borough Grade 1 Site of Importance for Nature Conservation. One of the exciting  things about it is that it has become as good as is ‘under its own steam’, and without any great human intervention to date. But it does now need some work on thinning things out – like the over-the abundant Buddleia!  We will report on progress here.

Posted in Braeburn Park, brownfield, Crayford, Hall Place, London Wildlife Trust | Leave a comment

Danson Park wildlife reports June 2014

Latest records from regular Danson Park visitor, John Turner.

We are always interested in receiving reports if you are regularly visiting a particular site.

 

06/06/2014 17/06/2014 26/27/06/14
a.m. a.m. a.m.
Great-crested Grebe 2+2juv 2+2juv 2+2juv
Little Grebe 1 1
Cormorant 1 2 2
Heron 1 1 2
Mute Swan 2+3juv 2+3juv 2+3juv
Canada Geese 36+1juv 37+1juv 45+1juv
 Grey Lag Goose 2 3 2
Egyptian Goose 3 4+2juv
Mallard 56 62 64+13juv
Gadwall 2
Tufted Duck 2 2
Sparrow Hawk 1
Moorhen 10 4 8
Coot 54+5juv 51+4juv 47+6juv
Black-headed Gull 1 14
Wood Pigeon 36 13 10
Stock Dove 4 4 2
Collared Dove 1
Ring-necked Parakeet 4 3 4
Nuthatch 2
Grey Wagtail 1
Wren 9 7 8
Dunnock 4 3
Robin 9 7 4
Blackbird 14 7 9
Song Thrush 1
Blue Tit 3 3 1
Great Tit 3 3 6
Coal Tit 2
Long-tailed Tit 2 17 7
Starling 22 6
Jay 1
Magpie 6 6 3
Crow 46 70 59
House Sparrow 3 4
Chaffinch 5 5 3
Greenfinch 1 2
Blackcap 4 4 2
Chiff-chaff 1 1 1
Swift 2 8 2
Grey Squirrel 7 5 5
Brown Rat 1
Terrapin 1
Speckled Wood 4 1
Small White 1
Large White 4 5
Orange Tip 1
Tortoiseshell 1
Meadow Brown 2 6
Large Skipper 1
Small Skipper 3
Comma 1
Common blue damsel fly 8 10 Lots
Blue tailed damsel fly 16
Red eyed damsel fly 2
Emperor 2 4
Broad bodied chaser 1
Posted in Bird watching, Recording | 1 Comment

Cattle in parks in Havering

Havering Council are showing some initiative in the management of the grass in Bedfords Park.

Undoubtedly motivated by the £300,000 saving they expect to make over the next ten years, but the use of grazing animals to manage vegetation is widespread on land managed for conservation, so it is good to see it being extended to public parks.

We can think of a few in Bexley that could benefit. Woodlands Farm on Shooter’s Hill use cattle and sheep to manage the wildlife value of their farmland as well as a ‘crop’.

http://www.standard.co.uk/news/london/cows-to-move-in-to-london-park-to-save-money-on-cutting-the-grass-9637022.html

 

Red Poll Cow

Red Poll Cow

 

Posted in Parks | Leave a comment

Bexleyheath Broadway Shopping Centre takes action on water conservation.

It is good to see a local commercial organisation taking action to reduce its environmental impact. Unfortunately Bexley Council’s planning officers seem to keen to accept excuses from developers and not even apply there onwn policies on environmental aspects. So, well done Sue Wilders, Broadway Operations Manager on setting an example.

http://www.bexleytimes.co.uk/news/bexleyheath_shopping_centre_boosts_green_credentials_with_help_of_environmentally_conscious_manager_1_3689670

Posted in Environment, Planning, Uncategorized | Leave a comment