N.Y. ENV. LAW § 3-0103 : NY Code - Section 3-0103: Commissioner of environmental conservation

The  head of the department shall be the Commissioner of Environmental
  Conservation, who shall be appointed by the Governor, by  and  with  the
  advice and consent of the Senate, and hold office at the pleasure of the
  Governor  by  whom he was appointed and until his successor is appointed
  and has qualified.