Species and populations are probably the two most commonly used ecology terms, but they are often difficult concepts to grasp. Throughout this chapter, they will be discussed in detail, expanding on the definitions from previous chapters and explaining why there are no universally acceptable definitions.
Jefferson County, Arkansas is a county located in the U.S. state of Arkansas in the area known as the Arkansas Delta, that extends west of the Mississippi River. As of the 2010 census, the population was 77,435. Its county seat and largest city is Pine Bluff. Jefferson County is Arkansas's 21st county, formed on November 2, 1829, from portions of Arkansas and Pulaski counties, and named for Thomas Jefferson, third President of the United States.
As of the 2016 Census Estimate, the city proper had a total population of 65,300, making Conway the seventh largest city in Arkansas. Central Arkansas, the Little RockâNorth Little RockâConway, AR Metropolitan Statistical Area, is ranked 75th largest in the United States with 734,622 people in 2016. Conway is part of the larger Little RockâNorth Little Rock, AR Combined Statistical Area, which in 2016 had a population of 905,847, and ranked the country's 60th largest CSA.