Geographic Information Systems
Bloomsburg, PA 17815
Maps By Mitch
Bear Harvest Timeline in Columbia County
December 6, 2011
Welcome to "Maps By Mitch". A "blog" of sorts to highlight various maps and the techniques used to create them. I hope to have a new "map" posted on a monthly basis.
This month's map comes from data obtained from the Pennsylvania Game Commission (PGC). Every year in mid November hundreds, if not thousands, of people brave the North East PA weather in hopes of tagging one of PA's true trophies, a Pennsylvania Black Bear. The PA black bear, or Ursus Americanus, is the only bear found in Pennsylvania and can live upwards of twenty-five years. Mature females generally weigh around 200 pounds and males 600 pounds. However; they have been found to weigh as much as 900 pounds. They average three feet in height when on all fours and between five and seven feet when upright. Contrary to the name, the black bear can be a cinnamon in color or even blonde, and they contain a white "V" in the center of their chest. For more information on the Pennsylvania black bear please click here.
The map below is a representation of the number of PA black bears harvested in Columbia County from the 2003 hunting season to the 2011 season. The purpose of this map is to show trends, if any, over the past nine years. Typically, a map should not need an explanation as to what it is conveying; however, I feel this map can be confusing if not expounded upon. Therefore, the "Columbia County" layer which is displayed as a grey boundary is being used as the constant in this scenario. This layer is symbolized at its normal scale and it does not change. The green "Bears Harvested" layer is used to proportionately show the changes in bears harvested over time. It was created by averaging the number of bears harvested over the past nine years, which came out to 39 and symbolizing it at the same scale as the constant, "Columbia County". The remaining data was created by figuring a ratio of the number of bears harvested each year to the average and then scaling the layer proportionately to the constant. If you have any guestions or comments about this map please leave them in the comments section below.
Click on map to begin the slideshow.