Slave trading between 1500 and 1863 reduced the population.
The next hunt was last January, when biologists reduced the population by 74 deer.
If people's losses were to be reduced, the population of wild prey animals had to increase.
Plagues reduced the population to only hundreds in the 1630s.
Researchers agree that the fall is partly because AIDS deaths have reduced the population of H.I.V.-positive people.
Applying lampricides to 30 hot spots, Mr. Bergstedt reduced the population to about 10percentt of its peak, he believes.
In 1878, the epidemic reduced the population of Memphis by perhaps as much as 50 percent.
Disease, war, and migration quickly reduced the population after contact with English settlers.
The state says it already has reduced the population by about 46,000.
That's part of what reduced the population in Jamaica: the N.E.P.A. worked to teach fisherman how to harvest lionfish, which can be dangerous.
An international campaign freed a handful of survivors, who returned here infected with diseases that reduced the population, more than 10,000 at its peak, to 111 people.
