Sentence examples for deliberate introductions from inspiring English sources

As a result of escapes and deliberate introductions in the mid-20th century, raccoons are now also distributed across the European mainland, the Caucasus region and Japan.

Since the mid-nineteenth century, it has reached most of the world, chiefly due to deliberate introductions, but also through natural and shipborne dispersal.

Urbanization, the expansion of agriculture, deliberate introductions, and the extermination of natural predators of the raccoon have probably caused this increase in abundance and distribution.

As a result of escapes and deliberate introductions in the mid-20th century, the raccoon is now distributed in several European and Asian countries.

There are now several documented cases of microsporidia being accidentally introduced to new geographical areas along with their hosts [ 63] and further, deliberate, introductions are contemplated for the purpose of biological control.

To reduce the potential of deliberate introductions of crop pathogens as acts of terrorism, researchers must be able to "fingerprint" pathogens at the molecular level and discriminate between naturally occurring and deliberately introduced outbreaks.

The effect of Petzval curvature can be somewhat offset by the deliberate introduction of sufficient overcorrected astigmatism, as was done in all the pre-anastigmat photographic objectives.

CNWs were grown on silicon, stainless steel, and copper substrates without deliberate introduction of catalysts.

New Zealand's Biosecurity Act stipulates heavy penalties for the deliberate introduction of an unwanted organism.

Thus, the presence of contaminants retained during synthesis, the deliberate introduction of chemical groups during functionalization, or the presence of defects, may alter CNT toxicity.

In the absence of these supplementary seed sources, deliberate introduction of these two species may be needed in highly degraded areas.