Sentence examples for declining population numbers from inspiring English sources

He posited that this behavior was due in part to declining population numbers in Japan.

The plant beds seemed alive there were so many pollinators, including the very bees that have been in the news for their declining population numbers.

"That primary driver is expected to trigger a host of cascading effects, from habitat alteration and habitat loss, to range shifts and, ultimately, declining population numbers.

In the 1980s, concerned with the declining population numbers, interested breeders undertook a promotional program, which resulted in renewed interest in the breed.

Based on evidence including declining population numbers, declining cub survival, and the drowning and starvation of individual bears, the government placed the polar bear on the threatened species list.

With the prospect of a declining population, the economy needs increasing numbers of migrant laborers from Central Asia and the Caucasus, yet they face frequent mistreatment.

3. Declining population growth.

Most of the Mediterranean seabird species (with the exception of some large gulls) are protected by European laws because of their small or declining populations or the small number of breeding sites.

But it would take many years for it to lead to any significant decline in population numbers, Whisson said.

Extinction occurs when species are diminished because of environmental forces (habitat fragmentation, global change, overexploitation of species for human use) or because of evolutionary changes in their members (genetic inbreeding, poor reproduction, decline in population numbers).

More recent declines in population numbers of sage-grouse and other sagebrush-obligate species in Wyoming have been linked to large-scale development of the landscape for energy, particularly underground reserves of oil and natural gas (Lyon and Anderson 2003; Walker et al. 2007; Becker et al. 2009; Harju et al. 2010; Gilbert and Chalfoun 2011).