Posts Tagged ‘environment assessment survey’

Freshwater invertebrates survey, RSPB nature reserve

Monday, February 25th, 2013

Karl Harrison, UES’ Graduate Ecologist, recently attended a freshwater invertebrate survey run by the RSPB at Coombes Valley Nature Reserve, Staffordshire.

The caterpillar of the Argent and Sable moth encases itself in birch leaves

The site is an oak woodland located in the steep sided Coombes Valley. It attracts a variety of woodland breeding birds including; flycatchers, redstarts and wood warblers. The site also has a small population of rare Argent and Sable moths (see photo).

The samples were taken from a stretch of the Coombes Brook as it passes through the nature reserve. They were collected using the ‘kick-sampling’ method, where the substrate is disturbed up stream of a hand net which collects any small invertebrates and everything else flowing down stream. The content of the net was spread out on a tray and any invertebrates carefully collected.

In the makeshift laboratory the collected samples were analysed and compared to known samples, paying close attention to the features that distinguish one family from another. The invertebrate larvae we hoped to identify were Mayflies Ephemeroptera, Stoneflies Plecoptera, Caddisflies Trichoptera and True flies Diptera.

Section of Coombes brook where Kick-sampling took place

Freshwater invertebrates are a good indicator of water quality, usually determined based on the species present and their levels. For example an abundance of Stonefly and Mayfly larvae suggests good oxygen levels and low levels of pollution.

The study of freshwater invertebrates can be very useful in ecological surveys, as they provide an indication of water quality and potential presence of amphibians.

Karl will be returning to Coombes Valley Nature Reserve to observe the larvae through their development.

For more information about the reserve or volunteering with the RSPB, details can be found on the Coombes Valley Nature Reserve Webpage.

Bat and ecological scoping survey in Swindon

Tuesday, November 8th, 2011

UES recently completed a bat and ecological scoping survey of a farm in Swindon. Our client has plans to demolish a number of buildings on site and convert other buildings for use as a hotel.

13 buildings were surveyed in total, of which 5 were identified as having high potential for use by bats. Low number of bat droppings believed to be long-eared species Plecotus were found in the internal roof spaces of the farmhouse. UES recommended further surveys on these buildings prior to the start on site to determine how many bats are present and how they are using the buildings.

All bats and their roosts are fully protected by law. Without detailed surveys you are at risk of destroying a bat roost or foraging grounds, which could have devastating consequences for the local bat population, and could land you with a fine or even a jail sentence and some very bad publicity.

During the survey UES recognised that the buildings and trees on site were all suitable for use by roosting and breeding birds, therefore any building works should be carried out outside of the breeding bird season (March to August inclusive) in order that breeding birds are not affected. If this is not possible then either a targeted breeding bird survey should be carried out or an ecological clerk of works appointed.

All breeding birds are protected under schedule 9 of the wildlife and countryside act 1981(as amended). Wild birds are protected from being killed, injured or captured. Their nests are protected from being damaged, destroyed or taken. Several species are included in schedule 1 of the act which gives them and their young protection while nesting.

The presence of protected species is a material consideration when a planning authority is considering a development proposal. The presence of protected species and the effect of the proposed development must be established before planning permission can be granted.

Bat scoping survey in Lancashire

Thursday, November 3rd, 2011

UES recently completed a bat scoping survey of a house and associated outbuildings in Lancashire. Our client has plans to demolish a number of buildings onsite and is applying for planning permission for a new build housing scheme.

The aim of the survey was to assess the site for the presence of bat roosts and bat activity within the structure of the buildings. The buildings were searched both externally and internally for bat presence and features associated with bat activity, as detailed in Bat Conservation Trust guidance (2007).

No field signs of bats such as droppings, feeding remains, rubbing or urine stains were found during the building inspections, and as such UES deemed that no further survey work was required in relation to bats.

However, house sparrows were observed breeding inside the building, and therefore mitigation and compensation measures were suggested in relation to breeding birds as ‘The Wildlife and Countryside Act (WCA) 1981’ states that all wild birds are protected. Under the WCA, it is an offence to kill, injure or take any wild bird, to take damage or destroy the nest of any wild bird, or to take or destroy the egg of any wild bird.

Dormouse survey in Oxfordshire

Wednesday, November 2nd, 2011

UES have recently completed a dormouse survey of a site in Oxfordshire. The proposed development involves the removal of a number of trees along a woodland edge to form encampments.

UES completed an Extended Phase 1 Habitat Survey of the site in May 2011. The survey highlighted areas of low coppiced hazel, coppiced silver birch, blackthorn and honeysuckle within the woodland which have some potential for use by dormice (Muscardinus avellanarius).

UES completed a desk study of the site, which found records of dormice in a SSSI woodland near to the proposed site, as such dormouse presence / absence surveys were completed, which involved searching the site for hazelnuts that had been characteristically gnawed by dormice.

Bats and badgers in Buckinghamshire

Wednesday, November 2nd, 2011

UES conducted a full bat survey of a barn in Marlow, Buckinghamshire in September 2011. Our client plans to change the use of the barn from agricultural to a dwelling.

Low numbers of common species of bats were observed using the area to forage and commute. The species recorded were Common pipistrelle Pipistrellus pipistrellus and Soprano pipistrelle Pipistrellus pygmaeus.

During the course of the survey some evidence of badgers was found including feeding remains and a latrine. A single badger was also observed in a hole on the northwest corner of the barn.

UES are currently completing badger monitoring surveys of the site in Buckinghamshire using remote wildlife cameras. Remote cameras are ideal for badger monitoring surveys allowing you to set it up onsite and return later to collect your images. Remote cameras can be set to take pictures or videos regularly with the time lapse facility, or when it is triggered by an animal moving into the field of view. Either way, it gives a remarkable insight into the wildlife in the vicinity.

Breeding bird survey in Knutsford, Cheshire

Tuesday, August 23rd, 2011

Ivy covered wall. A potential habitat for breeding birds.

UES have completed a breeding bird survey of a site in Knutsford, Cheshire in order to meet planning conditions. A breeding bird survey involves recording bird activity that is likely to indicate breeding. Behaviour considered likely to indicate breeding includes singing, display flights, mating and courtship displays, nesting, carrying of nesting material and birds showing fidelity to a particular area of ground or vegetation.

Breeding bird surveys and vegetation searches were carried out on site. 18 species of bird were heard or seen on or local to site but no evidence of breeding birds within the site boundary was found. Wren was recorded singing on site and could possibly of been breeding. Suitable habitats would include mature trees and/or an Ivy covered wall on site.

Other species heard or seen on or local to site included Goldfinch, Greenfinch, Siskin, Cormorant, Pied wagtail, Woodpigeon, Blackbird, Robin, Goldcrest, Carrion crow, Song thrush, Jackdaw, Magpie, Blue tit, Nuthatch, Coal tit and Dunnock.

Grasses, sedges and rushes course in the Yorkshire Dales

Tuesday, August 23rd, 2011

At the beginning of August Toby attended a week-long professional development course on grasses, sedges and rushes run by Judith Allison at Malham Tarn in the Yorkshire Dales.

Malham Tarn NNR is designated a Grade 1 SSSI by Natural England and is an excellent place to study grasses, sedges and rushes due to the diversity of habitats found there, including heather, moorland, peat bogs, limestone grassland and limestone pavement, ash and oak woodland, high altitude fens and calcareous flushes. Malham Tarn also boasts that one third of the c.107 British members of the sedge family (Cyperaceae) can be seen within walking distance.

Toby encountered over 50 different species of grasses, sedges and rushes in the field. The trip proved to be a great experience and a real help to identifying different species of grasses, sedges and rushes.

Images of species encountered can be seen at

http://www.flickr.com/photos/tobyhart/sets/72157627445592338/

Great crested newt pond scoping survey in Lower Peover, Cheshire

Tuesday, August 23rd, 2011

Great crested newt larvae

UES were commissioned in June 2011 to conduct a great crested newt pond scoping survey to assess potential presence of great crested newts within 250m of the development footprint.

Development works within 250m of a great crested newt pond are often subject to a Natural England European Protected Species Licence (EPSL). It is stressed by Natural England to try and redesign a project to remove any potential impacts on great crested newt populations and associated habitats in order to remove the need for licensing.

The field methods used to survey ponds are:

  1. Bottle trapping
  2. Egg search
  3. Torch surveys
  4. Netting

Natural England recommend using at least three of the methods outlined above when conducting a pond survey. Smooth newts and great crested newt eggs and larvae were found in ponds within 250m of the development.

UES proposed that by designing the project timings and working methods to avoid impacts, any potential impacts on local great crested newt populations and habitats could be effectively removed, or reduced to a negligible level thereby removing the need for protected species licensing.

Moth monitoring surveys

Tuesday, August 23rd, 2011

UES have now spotted 72 species of macro-moth so far during monitoring surveys, including the Lime-speck pug moth. Moths with narrow outstretched wings are ‘usually’ pug moths, members of the Eupithecia family.

The Lime-speck pug is very distinctive with its lime white wings and large dark ‘speck’ on the leading edge of wing. It is thought that this species may resemble a bird-dropping and thus reduce attraction to predators.

Other species observed recently include Dark arches, Flame carpet,  Small phoenix, Buff arches, Buff tip, Common wainscot, Early thorn, Light arches, Riband wave, The Clay and The Olive moth.

Bat survey in Cranage, Cheshire

Monday, August 15th, 2011

Fitting a bat box

UES have completed a bat presence/absence survey at a site in Cheshire. Our client intended to demolish a building and so a bat survey was required in order to inform the planning process.

The building was searched internally and externally for signs of use by bats, and emergence and return roost surveys were carried out. The surveys found bats roosting in the boxed soffits of the building and also under the roof and ridge tiles.

UES recommended that a licensed bat ecologist be present during the demolition in case any bats were found within the building.  During demolition a male pipistrelle was found roosting under the roof tiles and so was carefully rehomed to a new bat box that UES had positioned on site.