Atlas Resource Partners, L.P. (NYSE: ARP) announces today that it will release results for the first quarter 2012 on Monday, May 7, 2012 after market hours, and invites investors and other interested parties to listen to the live webcast of its quarterly conference call on Tuesday, May 8, 2012, at 9:00am ET. This call is being webcast live and can be accessed by investors and other interested parties from the Investor Relations section of Atlas Resource Partners’ website at www.atlasresourcepartners.com. For those unavailable to listen to the live broadcast, the replay of the webcast will be available following the live call on the website and telephonically beginning at 11:00a.m. ET on May 8, 2012 by dialing 888-286-8010, passcode: 75755395. Atlas Resource Partners, L.P. (NYSE: ARP) is an exploration & production master limited partnership which owns an interest in over 8,600 producing natural gas and oil wells, representing approximately 450 Bcfe of net proved reserves, primarily in Appalachia and the Barnett Shale in Texas. ARP is also the largest sponsor of natural gas and oil investment partnerships in the U.S. For more information, please visit our website at www.atlasresourcepartners.com, or contact Investor Relations at InvestorRelations@atlasenergy.com.