Mammal Survey in Aldersbrook Exchange Lands

On Friday 29th August 2014, Darren Tansley, Water for Wildlife Officer for the Essex Wildlife Trust, and Tim Harris, from the Wren Wildlife and Conservation Group, set out 30 small mammal traps in the Aldersbrook Exchange Lands. This is the site of the old Redbridge Southern Sewage Works and now is mostly part of Epping Forest, with a central area belonging to Thames Water Authority. (for more information on the site, click here)

The traps used were Longworth Traps, which are designed to trap small mammals live so that they may be examined. Even when the trap is sprung there is a small hole for very small mammals to escape; Shrews need to eat continually, or they will die.

This operation was on behalf of our local Wren Wildlife and Conservation Group, and the following morning Darren gave ten Wren Group members some fascinating insights into the behaviour of voles, mice and shrews. The catch was four Wood Mice (2 males, 1 female and 1 that escaped before being sexed!) and a single Field Vole. There was also plenty of evidence of shrew activity, with both Common Shrew and Pygmy Shrew likely to be on site.

field vole rose cField Vole

wood mouse rose cWood Mouse

Darren raised a number of possibilities regarding the Exchange Lands. He thought there was a reasonable chance of Harvest Mice being present on the site. Apparently this species can colonise in only a few years of changed habitat status, and the site has been changing since it was closed as a sewage works in 1978 and later redeveloped to become part of Epping Forest in the 1990s. He also thought the Roding margins were worth checking for Water Shrews. And then, of course, there are Water Voles and Otters to look out for. Water Voles used to be a common inhabitant of the Roding adjacent to this site as well as through Wanstead Park. They became scarce by the early 1990s, although one was seen in 1998 and again in mid July, 2004. Since then, I have not heard of any being present. This may well be due to the presence of American Mink. Otters, however, are now not far upstream, and there have been one or two unconfirmed reports of sighting in the Roding by Wanstead Park, so surely it is only a matter of time?

 

Information supplied by Tim Harris - Photos by Rose Stephens

Paul Ferris, 1st September 2014

 

Ringlets in Wanstead Park – and in Aldersbrook Exchange Lands

Last year (2013) the first Ringlet butterfly to be recorded in the area was spotted by Kathy Hartnett and myself just to the east of the Shoulder of Mutton Pond in Wanstead Park. (see article here)

Ringlet wp 140711 JC cThe second recorded Ringlet. This one was in Wanstead Park on 11th July 2014 (photo by Jennifer Charter)This year, on July 9th, Jennifer Charter was walking her dog when she saw what she thought may have been a Ringlet in exactly the same location, on the same patch of Rosebay Willowherb. She told me of this, but said that she couldn't be positive about the identification.

Today, though (11th July), again while walking Grace, a butterfly unexpectedly flew past her in dullish weather, landed on a small oak and waited while she photographed it. It was most certainly a Ringlet, and a little further east than the other sightings, but it seems that they are in that area.

Another local wildlife-enthusiast – Rose Stephens – saw what she thought may have been a Ringlet on Wanstead Flats yesterday (10th). It seems she posted the information on Facebook, but I don't use that, so received the information second-hand. I looked at her photograph, but am not convinced it is other than the much more likely Meadow Brown. It would have been lovely if it were a Ringlet, but the butterfly is not typically found in open areas such as grassland or heathland, preferring damp and sheltered places.

This damp and sheltered habitat is more in line with where it was seen in Wanstead Park last year and this, and on 13th July during a Wren Group walk in the Aldersbrook Exchange Lands (the Old Sewage Works site) Mark Thomas, spotted a Ringlet amongst vegetation near the pylon towards the cemetery end. Then Kathy Hartnett found another on the lower path beside the Roding.

It was great news that we have Ringlets in the Park, and it seems that they are present further afield in our area too. This brings the total number of butterfly species in our area to 28.

Paul Ferris, 11th July 2014

Additions to species list in 2014

for 2015 additions, click HERE

for 2016 additions, click HERE

for 2017 additions, click HERE

for 2018 additions, click HERE

* in some cases the entry was made some time after the species was found. This may be due to a new identification or a previous mis-identification. Original date of find in brackets.

Species Common Name Type of Organism Date of find or entry* Found by:
Andricus testaceipes Barnacle Gall a gall 17/12/2014 Paul Ferris/Rose Stephens
Physa sp. a bladder snail Mollusc 15/12/2014 (19/06/2010) Paul Ferris
Ophyiulus pilosus Black Millipede Millipede 15/12/2014 (24/03/2014) Paul Ferris
Glomeris marginata Pill Millipede Millipede 14/12/2014 (24/03/2014) Paul Ferris
Oniscus asellus Common Shiny Woodlouse Crustacean 14/12/2014 (24/03/2014) Paul Ferris
Chrysopa perla? a green lacewing Lacewing 13/12/2014 (14/05/2014) Rose Stephens
unknown species a thrip Thrip 13/12/2014 (23/07/2013) Paul Ferris
unknown species a scale insect Bug 13/12/2014 (05/05/2001) Paul Ferris
unknown species a mealybug Bug 13/12/2014 (04/06/2011) Paul Ferris
unknown species a mayfly Mayfly 13/12/2014 (27/08/2005) Paul Ferris
Blaps mucronata Cellar Beetle Beetle 11/12/2014 (17/08/2014) Rose Stephens
Dusona sp. an ichneumon wasp Wasp 11/12/2014 (13/05/2014) Rose Stephens
Monomorius pharaonis Pharaoh Ant ? Ant 11/12/2014 (29/11/2014) Roger Snook
Labulla thoracica a spider Spider 01/12/2014 Rose Stephens
Trichocera sp.  a winter gnat Fly 01/12/2014 Rose Stephens
Orchesella cincta a springtail Collembola 29/11/2014 Rose Stephens
Pseudeuophrys lanigera a jumping spider Spider 29/11/2014 Rose Stephens
Culiseta annulata a mosquito Fly 29/11/2014 Rose Stephens
Lepthyphantes minutus a sheet-web spider Spider 28/11/2014 Paul Ferris
Corizus hyoscyamiyami a bug Bug 28/11/2014 Rose Stephens
Niptus hololeucus Golden Spider Beetle Beetle 28/11/2014 Rose Stephens
Sitona regensteinensis a weevil Beetle 16/11/2014 Rose Stephens
Udea ferrugalis Rusty-dot Pearl Micro Moth 15/11/2014 Tim Harris
Macrolophus rubi a mirid bug Bug 14/11/2014 Rose Stephens
Haplophilus subterraneus a centipede Centipede 13/11/2014 Rose Stephens
Strophosoma melanogrammum Nut Leaf Weevil Beetle 13/11/2014 Rose Stephens
Kleidocerys resedae Birch Catkin Bug Bug 10/11/2014 Rose Stephens
Mutilla europaea Large Velvet Ant Wasp 30/10/2014 (13/09/2008) Paul Ferris
Anyphaena accentuata Buzzing Spider Spider 30/10/2014 Paul Ferris
Gibbium sp. a spider beetle Beetle 30/10/2014 (05/10/2013) Paul Ferris
Adonia variegata Adonis Ladybird Beetle 28?/10/2014 Rose Stephens
Orchesella villosa a springtail Collembola 25/10/2014 Rose Stephens
Ophion obscura an ichneumon Fly 25/10/2015 Rose Stephens
Griposia aprilina Merveille du Jour Moth 25/10/2014 Tim Harris
Palloptera (Toxoneura) muliebris Womanly Bow-wing Fly 25/10.2014 Rose Stephens
Dicranopalpus ramosus a harvestman Harvestman 24/10/2014 Rose Stephens
Odiellus spinosus a harvestman Harvestman 23/10/2014 Rose Stephens
Dicyrtomina sp. ? a springtail Collembola 20/10/2014 Paul Ferris
Valenzuela flavidus a barklouse Arthropod 14/10/2014 Rose Stephens
Family Psychodidae an owl midge Fly 10/10/2014 Paul Ferris
Paroligolophus agrestis ? a harvestman Harvestman 08/10/2014 Paul Ferris
Oonops pulcher a spider Spider 07/10/2014 Rose Stephens/Paul Ferris
Nephrotoma quadrifaria a crane-fly Fly 07/10/2014 Paul Ferris
Tipula (confusa) a crane-fly Fly 05/10/2014 Paul Ferris
Hesperocorixa sahlbergi a water boatman Bug 05/10/2014 bio-blitz
Sigara dorsalis a water boatman Bug 05/10/2014 bio-blitz
Sigara falleni a water boatman Bug 05/10/2014 bio-blitz
Ilyocoris cimicoides Saucer Bug Bug 05/10/2014 bio-blitz
Notonecta glauca Greater Water Boatman Bug 05/10/2014 bio-blitz
Plea minutissima a water bug Bug 05/10/2014 bio-blitz
Aquarius najas a pond skater Bug 05/10/2014 bio-blitz
Hygrobia hermanni Screech Beetle Beetle 05/10/2014 bio-blitz
Laccophilus minutus a diving beetle Beetle 05/10/2014 bio-blitz
Hyphydrus ovatus a diving beetle Beetle 05/10/2014 bio-blitz
Hydroporos planus a diving beetle Beetle 05/10/2014 bio-blitz
Acilius sulcatus a diving beetle Beetle 05/10/2014 bio-blitz
Anacaena globulus a water beetle Beetle 05/10/2014 bio-blitz
Pisidium sp. Pea Shell Cockle Mollusc 05/10/2014 bio-blitz
Eupteryx (melissae) Sage Leafhopper Bug 03/10/2014 Rose Stephens
Alebra albostriella a leafhopper Bug 30/09/2014 Rose Stephens
Aporophyla lutulentata Deep-brown Dart Moth 28/09/2014 Tim Harris
Pterostichus madidus a ground beetle Beetle 23/09/2014 Rose Stephens
Mythimna l-album L-album Wainscot Moth 18/09/2014 Tim Harris
Agrotis trux ssp. trux Crescent Dart Moth 12/09/2014 Tim Harris
Psylliodes sp. a leaf beetle Beetle 11/09/2014 Rose Stephens
Rhyparochromus vulgaris a bug Bug 04/09/2014 (03/04/2008) Rose Stephens/Paul Ferris
Phycita roborella Dotted Oak Knot-horn Micro Moth 22/08/2014 Tim Harris
Apotomis betuletana Birch Marble Micro Moth 13/08/2014 Tim Harris
Ennomos erosaria September Thorn Moth 26/07/2014 Tim Harris
Dichrorampha petiverella Common Drill Micro Moth 23/07/2014 Tim Harris
Grapholita orobama Crescent Piercer Micro Moth 16/07/2014 Tim Harris/Kathy Hartnett
Rhyacionia pinicolana Orange-spotted Shoot Micro Moth 13/07/2014 Tim Harris
Idaea biselata Small Fan-footed Wave Moth 11/07/2014 Tim Harris
Diarsia rubi Small Square-spot Moth 11/06/2014 Tim Harris
Plemyria rubiginata Blue-bordered Carpet Moth 13/06/2014 Tim Harris
Herminia tarsipennalis Fan-foot Moth 31/05/2014 Tim Harris
Synanthedon myopaeformis Red-belted Clearwing Moth 31/05/2014 Rose Stephens
Donacia simplex ? a leaf beetle Beetle 20/05/2014 Paul Ferris
Apamea sordens Rustic Shoulder-knot Moth 19/05/2014 Tim Harris
Charanyca trigrammica Treble Lines Moth 19/05/2014 Tim Harris
Argyresthia trifasciata Triple-barred Argent Micro Moth 19/05/2014 Paul Ferris
Eupithecia absinthiata Wormwood Pug Moth 19/05/2014 Tim Harris
Cionus sp. (poss. scrophulariae) a weevil Beetle 18/05/2014 Paul Ferris
Agnopterix ocellana Red-letter Flat-body Micro Moth 18/05/2014 Tim Harris
Emmetia marginea Bordered Carl Micro Moth 17/05/2014 Paul Ferris
Phyllonorycter harrisella White Oak Midget Micro Moth 17/05/2014 Paul Ferris
Panemeria tenebrata Small Yellow-underwing Moth 12/05/2014 Paul Ferris
Incurvaria masculella Early Purple Micro Moth 25/04/2014 Paul Ferris
Saturnia pavonia Emperor Moth 24/04/2014 Paul Ferris
Polyploca ridens Frosted Green Moth 13/04/2014 Tim Harris
Ecliptopera silaceata Small Phoenix Moth 04/04/2014 Paul Ferris
Limax flavus Yellow Slug Mollusc 20/03/2014 Paul Ferris
Enteridium lycoperdon a slime mould Slime Mould 17/03/2014 Paul Ferris
Conistra ligula Dark Chestnut Moth 15/03/2014 Tim Harris
Deroceras reticulatum Grey Garden Slug Mollusc 14/03/2014 Paul Ferris
Agnopterix heracliana Common Flat-body Micro Moth 12/03/2014 Paul Ferris
Lehmannia valentiana Three-band Garden Slug Mollusc 09/03/2013 Paul Ferris
Metatricha filiformis a slime mould Slime Mould 06/03/2014 Roger Snook/Paul Ferris

 

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Annual destruction of wild flowers in Wanstead Park

Once again, the emerging wildfowers by the east end of Perch Pond have been strimmed to ground level. In mid-May, just as some were flowering and some were ready to come into flower. Just as the damselflies that use them as perches were hatching a few feet away. Just as people visiting Wanstead Park because they think it is a nice place could have walked past and thought how pretty it looked.

wp perch pond 140520 70709artNo home for wildlife; no colour for peopleThis is the annual strim – or one of them. It is because of the Reservoirs Act: “No herbal vegetation that would do serious harm to the dam that retains the waters of the Perch Pond may be allowed to come into flower. Any such delicate vegetation must be cut down just as it is flowering or - alternatively or as well – it is seeding”.

Is that what the Act states? Or is that the interpretation of the Conservators of Epping Forest in their wisdom and within their remit to “preserve the natural aspect” of the Forest? Wanstead Park is not – of course – a “natural” part of the Forest. It is a man-made and managed environment and the management of the Park relating to the wildflowers at the east end of the Perch Pond means that each year we loose the full beauty of them, and the wildlife looses an important part of its habitat.

wp pp flowers 080707 60699artVegetation, sanctuary and a bit of colourI have been going on about this for years. Why is it not possible to do this strimming, which I believe is required so that woody shrubs and trees don't grow up so that their roots undermine the embankment, at a different time? For example, what about earlier in the year before the flowering has begun, say early March, and/or later in the year after the flowers and seeds are over, say late September?

It is possibly to do with manpower. The Epping Forest arm of the City of London Corporation, the Conservators of Epping Forest, has much more to manage than just Wanstead Park; and on the whole they do a good job of it. It's just that in this little part that I know and particularly care about, it has not been found possible, even after pointing out the problem to the Ecology People and to discussing on-site the issue with the Head of Operations for Epping Forest earlier this year (see here), provisions can't be made to adjust things slightly.

Show me to the nearest brick wall.

Paul Ferris, 21st May, 2014

Daffodils on Lincoln Island

The daffodils are in flower on Lincoln Island. There are numerous clumps of daffodils scattered around Wanstead Park, but few in any profusion. Many of those that are to be found may have arrived either by deliberate introduction to brighten things up, maybe as an unofficialy introduced commemoration, by throw-outs from nearby gardens or by some other chance.

Wren Group Practical Work 02120  0003artDecember 2001 - Wren Group member Les Rice rows Gill James and Jim Brown to Lincoln IslandOnly on Lincoln Island at the north end of the Ornamental Waters are there any to be seen in number. It was years ago when I first became interested in wildlflowers that I first was aware of them. I used the Wren Group's dingy to go over there to have a closer look, and at the time - and perhaps in my early enthusiasm and lack of experience - reported that amongs the variety of what may be called "garden" types, there were one or two "wild" daffodils Narcissus pseudonarcissus. I think now that may have been a mistake. Even so, I suggested to the group that perhaps we ought to try to preserve whatever was there.

Since then I have been over to the island a number of times, although only a few times when the plants are in flower. Most of the time there has been no sign of them, for it is once a year in the winter that the Wren Group have been making expeditions to the island on one of their Winter practical work sessions. The idea of this has been to keep the site clear of bramble, saplings and fallen tree-litter, so that the daffs have a chance to be seen and possibly even to spread.

Daffodils wp 140324 01804artThe daffodils on 24th March 2014This must have been successful, although I wonder how much they have actually spread. They have certainly multiplied, but I feel that perhaps we ought to do a post-flowering session, dig some of the clumps up, divide them and replant them - thus spreading them as one might in a garden. They are not wild; they have evidently been planted at some time - but who knows when?

I like to think that they may be relics of an old planting when the house was still on the high ground where the golf-course stiil is. They are probably not that old; probably an expert on daffodil varieties might be able to offer some clues based on when the varieties were created or fashionable. Whatever the case, they do make a colourful display and must give pleasure to some as they walk around the Ornamental Waters. I suspect that few would think of the effort spent by a gallant few, rowing and being rowed across there every year, in winter, in a grand variety of weathers!

Paul Ferris, 26th March 2014