The White House announced new initiatives on Friday to promote the health of honeybees and other pollinators, which have suffered enormous losses in recent years. The memorandum, signed by President Obama, called for research into the causes of the severe decline and the role of pesticides, and formed a “pollinator health task force” of more than 14 federal agencies, saying, “It is critical to expand federal efforts and take new steps to reverse pollinator losses and help restore populations to healthy levels.” Erich Pica, president of the environmental group Friends of the Earth, said the administration “does not go far enough” to address pesticide issues.