It is likely that the presence of observers was noticed by pedestrians even though the most discrete positions were selected considering safety procedures (e.g. remain in a significant distance from roadside) and the visibility of the targeted variables.
Chloride significantly (p < 0.05) inhibited denitrification in forested wetlands at a Cl− dosage of 2500 or 5000 mg L−1, but the decrease in denitrification rates was less and not significant for the roadside wetlands historically exposed to elevated concentrations of Cl−.
But the officers say an equally large number of Iraqi detainees say money is a significant reason they planted roadside bombs or shot at Iraqi and American-led forces.
While the mean crash indicators supported the aforementioned hypothesis, t tests conducted at the 90%% confidence level found the difference in crash indicators for sections with and without roadside objects significant only for the combined safety index in the northbound direction.
American military statistics show that significant acts of violence, including roadside bombings, sniper shootings, and mortar and rocket grenade attacks, fell from 195 in the week before the operation to 93 in the week after it, according to Lt. Col. Eric R. Price, the chief American adviser to General Hussein.
(3) The degree of curve and the presence of valley versus river at roadside were both found significant for the crash frequency model, while only ΔV was found significant in the combined safety index model at the 95%% confidence level.
The ban of leaded petrol in Australia, in effect since 2002, has resulted in declining blood lead levels though interestingly, even today some dust from roadsides still contains significant concentrations of lead (Peter Baghurst, personal communication).
The application of millions of tons of road deicing salts every winter in North America presents significant survival challenges to amphibians inhabiting roadside habitats.
Because D. fullonum is able to adapt rapidly to many different environmental conditions, it is more likely that this species will be able to spread rapidly into new habitats from the roadside and pose a significant threat as an invasive plant.
Nonetheless, the fact that significant and viable populations are maintained at roadsides suggests that traditionally managed roadside verges may allow long-term persistence of lizard orchid populations and may serve as refuges in a landscape context.
