C.M. Roig-Silva

Forest cover changes due to hydrocarbon extraction disturbance in central Pennsylvania (2004–2010)

ABSTRACT The state of Pennsylvania has a long history of oil and gas extraction. In recent years with advances in technology such as hydraulic fracturing, hydrocarbon sources that were not profitable in the past are now being exploited. Here, we present an assessment of the cumulative impact of oil and gas extraction activities on the forests of 35 counties in Pennsylvania and their intersecting sub-watersheds between 2004 and 2010. The assessment categorizes counties and sub-watersheds based on the estimated amount of change to forest cover in the area. From the data collected we recognize that although forest cover has not been greatly impacted (with an average loss of percent forest coverage of 0.16% at the county level), landscape structure is affected. Increase in edge forest and decrease in interior forest is evident in many of the counties and sub-watersheds examined. These changes can have a detrimental effect on forest biodiversity and dynamics.

Effects of Hydrocarbon Extraction on Landscapes of the Appalachian Basin

Shale-gas and other hydrocarbon development can result in substantial landscape disturbance that can affect ecosystem structure and function, socioeconomic activities, and the health and distribution of critical plant and animal species. Natural gas exploration, development, and delivery have also resulted in changes in land use and increased population density, putting stress on infrastructure and having the potential to affect the human environment.