Three environmental groups signalled Wednesday their intention to stop a 16,000-acre logging and prescribed-fire project located in a national forest west of Yellowstone National Park. In their notice of intent to sue the Custer Gallatin National Forest, the Center for Biological Diversity, Alliance for the Wild Rockies and Council on Wildlife and Fish argued that the South Plateau Project’s clear-cutting, logging and road-building will threaten grizzly bears and lynx, both of which are federally protected under the Endangered Species Act. The groups also said the Forest Service’s plan to identify areas to be logged only after crews are on the ground inhibits public involvement and precludes adequate analysis of potential harm to wildlife. …Nick Mustoe, ranger for the Hebgen Lake Ranger District, cleared the project when he signed a decision last month finding that the proposal “would meet the need for action and would not result in effects to the human environment.”