A5089864612- Soil and Water Nutrient Dynamics
- Heavy metals in environment
- Soil Carbon and Nitrogen Dynamics
- Peatlands and Wetlands Ecology
- Hydrology and Watershed Management Studies
- Soil erosion and sediment transport
- Groundwater and Isotope Geochemistry
- Seedling growth and survival studies
- Forest ecology and management
- Odor and Emission Control Technologies
- Water Quality and Pollution Assessment
- Environmental Policies and Emissions
- Botany and Plant Ecology Studies
- Posttraumatic Stress Disorder Research
- Fire effects on ecosystems
- Fish Ecology and Management Studies
- Analytical Chemistry and Chromatography
- Radioactivity and Radon Measurements
- Forest Ecology and Biodiversity Studies
- Climate Change and Sustainable Development
- Resilience and Mental Health
- Plant Stress Responses and Tolerance
- Chemical Analysis and Environmental Impact
- Forest Insect Ecology and Management
- Turfgrass Adaptation and Management
University of Canterbury
2024-2025
UK Centre for Ecology & Hydrology
1997-2013
Lancaster University
2006-2011
Sands
1992-2002
University of Cumbria
1994-1999
Natural Environment Research Council
1997
Understanding “soil change” at the national scale, in addition to soil status, is a key challenge for scale monitoring programs and essential if more sustainable use of this finite resource be achieved. We present results from first survey change reported three times within Europe perhaps globally, covering 30‐yr time span. Countryside Survey an integrated program that makes measurements vegetation; topsoil physical, chemical, biological characteristics (0–15 cm); water quality; land across...
Summary Phytochelatins (PCs) are required for arsenic (As) detoxification in nontolerant plants. In addition, a role PCs arsenate tolerance has recently been proven, with tolerant plants able to accumulate significantly higher concentrations of As–PC complexes at equivalent levels stress than The relationship between influx and PC production Holcus lanatus was determined this study, along an investigation the effect inhibition synthesis by buthionine sulfoximine (BSO) on tolerance. A strong...
Abstract This scientific briefing announces the availability of a new multi‐element high‐frequency water quality data set that is openly accessible to research community. The comprises up 2 years 7‐hourly for two streams and one rainfall site in Upper Severn catchment at Plynlimon Mid‐Wales. measurements cover 50 analytes ranging from H + U spanning six orders magnitude concentration, including major, minor trace elements as well nutrients, they complement decades weekly same Severn....
ABSTRACT Background Cognitive behavioural therapy (CBT) is an effective treatment for post‐traumatic stress disorder (PTSD), but few studies have examined its effectiveness among individuals exposed to natural disasters. Group CBT could be efficient way treat disaster‐related PTSD, it unclear how the outcome of group and individual formats compare. Aims The current study used a non‐controlled design examine outcomes adults with severe, ongoing earthquake‐related distress non‐randomised...
Abstract A new warming technique has been developed in a field experimental study of the potential effects climatic change on N leaching from hill land plant/soil systems. Thermocouple compensating cable utilized to provide small cross‐section, flexible, low voltage heating cable, mounted framework stainless steel mesh, uniform at vegetation/soil interface zero‐tension lysimeters and surrounding turf. We describe specially designed heat controller capable maintaining temperature differential...
Journal Article Nutrient losses after clearfelling in Beddgelert Forest: a comparison of the effects conventional and whole-tree harvest on soil water chemistry Get access P. A. STEVENS, STEVENS 1Institute Terrestrial Ecology, Bangor Research Unit, University Wales BangorOrton Building, Deiniol Road, Bangor, Gwynedd, LL57 2UP, Search for other works by this author on: Oxford Academic Google Scholar D. NORRIS, NORRIS T. G. WILLIAMS, WILLIAMS S. HUGHES, HUGHES W. H. DURRANT, DURRANT 2Forestry...
Summary The effects of elevated UV‐B (280–315 nm) radiation on the long‐term decomposition Quercus robur leaf litter were assessed at an outdoor facility in UK by exposing saplings to (corresponding a 30% increase above ambient level erythemally weighted UV‐B, equivalent that resulting from c . 18% reduction ozone column) under arrays cellulose diacetate‐filtered fluorescent lamps also produced UV‐A (315–400 nm). Saplings exposed alone polyester‐filtered and solar nonenergized lamps. After 8...
Abstract. Changes in the chemistry of bulk precipitation and stream water between 1982 2000 are described for small moorland forest catchments located within Beddgelert Forest north Wales. Two were partially clearfelled 1984 (D2; 68% D4; 28%) whilst a third (D3) remained as an unfelled control until autumn / winter 1998/99 when partial felling took place headwaters. Over monitoring period, annual mean pH increased from 4.6 to 5.1 non-seasalt sulphate concentration decreased 0.53 mg S l-1...
Effects of stock plant nutrition on growth and subsequent rooting leafy stem cuttings the commercially important west African tree Triplochiton scleroxylon K. Schum. were investigated to identify primary morphological variables influencing adventitious root formation. Potted plants watered as required with one four balanced nutrient solutions (0, 15, 63 or 125 mg N l−1). Increasing supply increased rate production subsequently harvested cuttings, but an optimum regime was not identified....
Abstract. Intensive livestock farms emit large concentrations of NH3, most which is deposited very close to the source. The presence trees enhances deposition. Rates downwind forests can exceed 40 kg N ha−1 y−1. steep gradient in NH3 34.3±20.4, 47.6±24.9, 21.7±16.8 µg m3 at edge a forest 15, 30 and 45 m farm near background within 270 (1.15±0.7 m3) provides an ideal site study effect different rates atmospheric inferred deposition on biological chemical processes under similar environmental...
Sulfate adsorption capacity of B-horizons base-poor, predominantly stagnopodzol, soils from the Plynlimon catchments, mid-Wales was determined by combination laboratory and desorption isotherms. Results show that sulfate a range stagnopodzol (Histic-stagno-podzol (Leptic), WRB), brown podzolic soil (Histic-umbrisol WRB) stagnohumic gley (Histic-stagno-gleysol, positively related to amounts extractable (pyrophosphate oxalate) Fe + Al, with Bs horizon having largest Bg smallest capacity....