We studied the effects of high temperature and drought on the survival, growth and water relations of seedlings of Pinus ponderosa (Dougl.) Lawson, one of few coniferous tree species that can successfully colonize drought-prone sites with high soil surface temperatures. Temperature profiles were measured with 0.07-mm thermocouples in a sparse ponderosa pine forest in northern Idaho. The soil su...

abstract study design: a cross-sectional non-experimental study. objectives: to collectively detect the reliability and feasibility of the five types of clinical tests that have been used to measure endurance of the trunk muscles in subjects with and without low back pain (lbp) and identify the sensitivity of each test to predict the probability of the occurrence oflbp. background: testing spin...

abstract soil pollution with heavy metals like zinc causes increasing concerns about environment. according to distribution in soil, this study was conducted to compare zinc concentration between aggregate exteriors and interiors of some contaminated soils. aggregates were collected from 5 depths of 4 soil profiles with different textures and were separated mechanically into exterior and interi...

Exotic species can threaten native ecosystems and reduce services that ecosystems provide to humans. Early detection of incipient populations of exotic species is a key step in containing exotics before explosive population growth and corresponding impacts occur. We report the results of the first three years of an exotic plant early detection and treatment program conducted along more than 3,0...

An investigation was conducted in the laboratory and glasshouse to assess the sulphur (S) supplyingability of the important soil forms of the sugar industry. The amount of S in the soil as measured by a 0,5N ammonium acetate extraction procedure, was compared with the availability ofS during continuouscroppingof sorghumin pots. The number ofcropsrequired to exhaust the reserves of S was fairly ...

Coastal areas have become more prone to flooding with seawater due to climate-change-induced sea-level rise and intensified storm surges. One way to cope with this issue is by "managed coastal realignment", where low-lying coastal areas are no longer protected and instead flooded with seawater. How flooding with seawater impacts soil microbiomes and the biogeochemical cycling of elements is poo...

Pathogen Transmission Routes Research Program, describing pathogen pathways from farm animals to water bodies and measures that can reduce or prevent through the deposition of faeces by grazing animals directly into waterways in New Zealand. Bridging of streams intersected by farm raceways is an appropriate mitigation measure to prevent direct deposition during herd crossings, whilst fencing st...

Selecting the proper stock type for reforestation on dry sites can be critical for the long-term survival and growth of seedlings. In this study, we use a novel approach to understand stock type selection on a site where drought was induced with vegetative competition. Three ponderosa pine (Pinus ponderosa Lawson & C. Lawson var. ponderosa C. Lawson) seedling stock types were planted in the fie...

this study investigated the feasibility of using different extracting solutions at various concentrations to remove copper from low permeability silty loam soils, which have a high buffering soil, ph of 7.6, where it spiked with copper at concentration of about 1500 mg/kg to represent soil conditions. the most efficient extracting solutions could be used as purging/extracting solutions in other...

The Moroccan High Atlas is very sensitive to soil erosion due its steep slopes, torrential rains, and degraded plant cover. degradation of fertile soils in this mountainous watershed influences negatively upon agricultural productivity. objective study quantify the Tifnout Askaoun southern Morocco. Revised Universal Soil Loss Equation (RUSLE), geographic information system (GIS) techniques, Tro...