Gran Tierra Changes Direction, Kirton On Board

Gran Tierra Energy Inc., a company focused on oil exploration and production in South America, announced that Nadine Smith has resigned from the Board of Directors effective March 27, 2008. Ms. Smith recently became the Chair of the Board of Directors of La Cortez Energy, Inc., where she will need to devote her time and efforts.

Nick Kirton, FCA, ICD.D has joined the Board of Directors of Gran Tierra Energy effective March 27, 2008, and will also assume the role of Chairman of the Audit Committee. Mr. Kirton is a Chartered Accountant and retired after a thirty-eight year career at KPMG. He currently sits on the boards of directors of four public companies and one private company. In addition, he is also a member of the Board of Governors of the University of Calgary and is a member of the Education and Qualifications Committee of the Canadian Institute of Chartered Accountants.

Dana Coffield, President and Chief Executive Officer of Gran Tierra Energy Inc., stated, "The Board of Directors wishes to thank Ms. Smith for her past contribution to the Board of Gran Tierra Energy and wish her success in her new endeavor. We look forward to having the experience and skills of Mr. Kirton as we continue to grow our international oil and gas company."