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.
Effects of rising temperatures. Increased soil respiration â Rising temperature increases the rate of chemical and biochemical reactions. For soil microbes and roots, that also means increasing respiration, which can release more carbon dioxide and even methane from soils.
Basically, the answer is that climate and nutrients control primary productivity. Areas that are warm and wet generally are more productive (see Figures 6a and 6b). Overall, the amount of water available limits land primary production on our world, in part due to the large areas of desert found on certain continents.fter the costs of respiration, plant net primary production is reduced to 4.95 x 106 cal m-2 yr- 1, or about 0.05% of the solar constant. Note that this is the average efficiency, and in land plants this value can reach ~2-3% and in aquatic systems this value can reach ~1%.