nonimpacted
unimpacted

We developed a diatom-based index that integrates the effects of multiple stresses on streams and provides information related to the "distance" from the nonimpacted state.

The stream is relatively unimpacted in this reach, despite historic mining nearby.

"Their reported labor costs are incrementally unimpacted," he said.

However, the water quality and habitat quality of the stream are relatively unimpacted.

Unimpacted data sets were initially classified as representing impacted conditions in 0–5% of the cases.

Vegetation evaluations were carried out on the unimpacted and impacted portions of the bog from 1980 to 1983.

Regardless of why an area is designated as an ecological reserve, all reserves represent areas relatively unimpacted by humans.

Often it is difficult to interpret data from impacted populations because we have no unimpacted "yardstick" for comparison.

The stream is relatively unimpacted above the Williams Bridge Reservoir.

The plants were relocated successfully to unimpacted wetlands immediately adjacent to the remediation site in 2004.

The model assumes habitat is either in an unimpacted state or in an impacted state.

• Fraction of organic carbon (foc) sample(s) from background unimpacted area.

Flo brought very high winds and very light rain to Tokyo, but the capital remained largely unimpacted.

Infaunal communities were found to be high in diversity and low in abundance, characteristic of unimpacted sediments.

Forested land-use demonstrated typically unimpacted conditions.

Based on these data, reasonable estimates of background ozone for areas of Canada relatively unimpacted by anthropogenic pollution are:

These plans require information about unimpacted and impacted conditions, the mathematical distribution of the data, and acceptable risks of classification error.

At least one upgradient well and one or more wells located in unimpacted zones downgradient of the contaminated area are required to characterize background conditions.

The state transition equations describe that fishing decreases unimpacted habitat and the recovery process decreases impacted habitat.

In general, the chloride concentrations in unimpacted water bodies in the Atlantic region do not exceed a concentration of 20 mg/L.

The chloride concentrations of unimpacted water bodies in the remaining parts of British Columbia are generally less than 5 mg/L.

The increased access to relatively unimpacted populations and the likelihood of increased hydroelectric development in some areas are causes for concern for this designatable unit.

The stream flows through an underground culvert system in its lower reaches, but its upper reaches are forested and relatively unimpacted.

Because of this, the spatial and temporal distributions of sodium and potassium in unimpacted freshwater systems are uniform, with little seasonal variation.

The conditions of individual sites of concern are assigned an impact category between 1 and 5 (with 1 being unimpacted and 5 being clearly impacted by contamination).

"Our baseline of what we think are unimpacted marine environments, is sliding," said Tim Allen, coordinator of the Marine and Coastal Community Network.