Arsenic in U.K. estuarine sediments and its availability to benthic organisms

Author(s):  
W. J. Langston

Arsenic concentrations in estuarine sediments from England and Wales range over three orders of magnitude. The highest concentrations, up to 2500 μg/g, occur in the sediments of estuaries in south west England associated with past or present metalliferous mining activity. Strong correlations exist between arsenic and iron in 1 N-HC1 extracts of different estuarine sediments. The As/Fe ratio in those estuaries not contaminated with mine wastes is 11 × 10−4, increasing to 190 × 10—4 in metalliferous sediments.

Until 2019, TBE was considered only to be an imported disease to the United Kingdom. In that year, evidence became available that the TBEV is likely circulating in the country1,2 and a first “probable case” of TBE originating in the UK was reported.3 In addition to TBEV, louping ill virus (LIV), a member of the TBEV-serocomplex, is also endemic in parts of the UK. Reports of clinical disease caused by LIV in livestock are mainly from Scotland, parts of North and South West England and Wales.4


Author(s):  
Maya Holding ◽  
Heinz-Josef Schmitt ◽  
Gillian Ellsbury

Until 2019, TBE was considered only to be an imported disease to the United Kingdom. In that year, evidence became available that the TBEV is likely circulating in the country1,2 and a first “probable case” of TBE originating in the UK was reported.3 In addition to TBEV, louping ill virus (LIV), a member of the TBEV-serocomplex, is also endemic in parts of the UK. Reports of clinical disease caused by LIV in livestock are mainly from Scotland, parts of North and South West England and Wales.4


Author(s):  
G. W. Bryan ◽  
L. G. Hummerstone

In a previous paper (Bryan & Hummerstone, 1971) the average concentrations of copper, zinc, lead, manganese and iron in the polychaete Nereis diversicolor O. F. Müller from several estuaries draining the mineralized areas of South-West England were compared with concentrations in the sediments. Although high levels of copper and zinc were encountered in some sediments none contained high levels of manganese and, in the worms, concentrations of manganese were low and relatively constant. Other estuaries in the area have since been examined, but although thousands of μg/g of copper, zinc, lead and arsenic have been found in some sediments, concentrations of manganese exceeding 1000, μg/g have rarely been encountered. Manganese ores occur quite widely in South-West England but the scale of mining appears to have been small by comparison with that for more obvious contaminants of estuaries such as copper, lead and arsenic (Dines, 1956). However, it is thought that the field observations and experimental results described in this paper can be extrapolated to situations where much higher concentrations of manganese occur.


Author(s):  
D. P. Roche

AbstractPlanning for development in mining areas should include full consideration of the possibility of hazards associated with abandoned mineworkings. An adequate amount of study and investigation should enable use of land to be optimized by avoiding the high risk zones, and assist in realistic land evaluation and estimation of development costs. This paper describes a typical mining study and investigation for a site scheduled for development, and the planning implications commonly encountered. The approach is illustrated by a series of thematic map diagrams conveying factual information and interpretation, and based on experience in the metalliferous mining region of SW England. It demonstrates the potential for successful application of this type of approach to planning in areas in which abandoned mineworkings can pose a major hazard to development.


1996 ◽  
Vol 28 (6) ◽  
pp. 493-506 ◽  
Author(s):  
O. L. Gilbert ◽  
O. W. Purvis

AbstractOver the last century, the distribution of Teloschistes flavicans has contracted from being widespread in the southern half of England and Wales to being limited to South-West England with outlying populations in Pembrokeshire and North Wales. Twelve core sites have been identified where the species is well established: ten of these are saxicolous/terricolous habitats on windy coastal cliff tops; the other two are lines of sycamore trees near the coast. At 39 further localities, some inland, the species is in very small amounts (often on one tree) and vulnerable to extinction. It is normally a member of the Parmelietum revolutae or Ramalinetum scopularis associations. The conservation of the species is discussed.


2015 ◽  
Vol 97 (1) ◽  
pp. 35-39 ◽  
Author(s):  
J Yarrow ◽  
S Rahman ◽  
N Marsden ◽  
I Pallister ◽  
S Hemington-Gorse

Introduction The joint British Association of Plastic, Reconstructive and Aesthetic Surgeons/British Orthopaedic Association standards define best practice management in open diaphyseal fractures of the lower limb. The aim of our study was to review the regional approach and experience in South West England and Wales. A further objective was to evaluate service provision with regard to the standards’ key recommendations. Methods A prospective audit was undertaken of open diaphyseal fracture patients. Compliance with published standards within all orthoplastic services in South West England and Wales was assessed, and facilities were evaluated. Results A total of 86 patients were managed between October 2012 and March 2013. This was a 56% increase from 2008. Over half (56%) presented directly to the orthoplastic services with all patients undergoing debridement within 24 hours. Two-thirds (66%) of procedures were in daylight hours excluding those requiring immediate surgical intervention. Adherence to correct antibiotic therapy was 88% at admission, 50% at primary surgery and 62% at definitive surgery. Almost two-thirds (60%) of primary procedures were performed with combined senior orthoplastic teams, with 81% achieving definitive soft tissue coverage and fixation within seven days. Compliance improved in units with larger patient caseloads and where there was an early combined approach during daylight hours. Conclusions Increased open lower limb fracture workload was demonstrated across South West England and Wales, probably owing to centralisation of trauma services. An improvement in early transfer of this patient group to orthoplastic facilities has allowed all patients to be assessed and debrided within the recommended timeframe. Standards were most likely to be met in those centres seeing higher numbers of injuries and when there was a daylight hours procedure by combined orthoplastic teams.


Nature ◽  
1979 ◽  
Vol 281 (5732) ◽  
pp. 556-558 ◽  
Author(s):  
J. T. Andrews ◽  
D. Q. Bowen ◽  
C. Kidson

Sign in / Sign up

Export Citation Format

Share Document