In both our Atlas Energy and Atlas Resource earnings releases, we provide a reconciliation for net income to adjusted EBITDA and distributable cash flow, as we believe that these non-GAAP measures offer the best means for evaluating the results of our business.
And lastly, we'll be participating in several upcoming investor conferences, including the EnerCom Oil and Gas Conference in Denver on August 15
, and the Citi MLP Conference in Las Vegas in August 22
And with that, I'd like to turn the call over to our Chief Executive Officer, Ed Cohen, for his remarks on the quarter. Ed?
Thanks Brian, and hello, everyone. I'm glad to report that Atlas Energy L.P. and its MLP subsidiaries did enjoy a good second quarter. E&P production volumes at Atlas Resource Partners increased over 70% to 62.5 million cubic feet equivalent per day from only 36.6 million for the comparable 2011 period.
Gathered gas volumes at Atlas pipeline were up almost 35% year to year from 574.5 cubic feet per day to 775 million. And despite low prices for both natural gas and natural gas liquids, ATLS cash distributions at $0.25 for the quarter were 14% higher than for the corresponding 2011 period and much higher on a pro forma basis. And day ARP in its first full quarter distributed $0.40 with a 1.1 coverage ratio.
Nonetheless, this period should be seen as a mere prelude to the sharp acceleration in distributable cash flow that we anticipate in future quarters. We have taken the last months to effectuate major transformations, acquisitions, new plants, new fields, new block bluster wells, and new investor program, that are now generating and will increasingly in the near future generate substantial growth in distributable cash flow in both our downstream that is ARP, and midstream APL operations. And of course, because of its incentive distribution rights as a general partner of both ARP and APL our parent company ATLS in turn will likewise experience greatly enhanced distributable cash flow.