Brief synthesisWood Buffalo National Park is an outstanding example of ongoing ecological and biological processes encompassing some of the largest undisturbed grass and sedge meadows left in North America. Criterion (ix): Wood Buffalo National Park is the most ecologically complete and largest example of the entire Great Plains-Boreal grassland ecosystem of North America, the only place where the predator-prey relationship between wolves and wood bison has continued, unbroken, over time. Criterion (x): Wood Buffalo National Park contains the only breeding habitat in the world for the whooping crane, an endangered species brought back from the brink of extinction through careful management of the small number of breeding pairs in the park. Park managers work with 11 Aboriginal groups for whom Wood Buffalo National Park is an area of significant cultural value to cooperatively manage the park, as each group carries out traditional harvesting and other cultural activities within the park boundaries. Park staff closely monitors upstream development on the major rivers that flow into the park and work closely with local Aboriginal partners, other government agencies, stakeholders and industry to maintain the ecological integrity of Wood Buffalo National Park.