Another way to collect a stool sample is to loosely place plastic wrap across the rim of the toilet, under the seat. Then place the stool sample in a clean, sealable container before taking to the laboratory. Plastic wrap can also be used to line the diaper of an infant or toddler who is not yet using the toilet. The stool should be collected into clean, dry plastic jars with screw-cap lids.
The potential variations in the properties of agricul-. tural soils are less well known. Diaz et al. (1994) have. reported that under a climate change scenario the soil. organic matter content and erosion rate would de-. crease with regard to current values in the Arrecifes. River basin.
What is the likely effect on marginal agricultural land use (such as rough grazing) as a result of climate change in a country like the UK? Climate change will affect agricultural land use. However it is less clear how individual land use types will change. Within the UK rough grazing land (marginal agricultural land) is important for many ecosystem services. Will it be increasingly converted into more or less intensive use due to the warmer and drier conditions expected for the UK?