Jo Anne Van Tilburg of Rapa Nui's role in Polynesian seafaring history; Explore the natural environment of the Pacific Ocean and the ecology of Rapa Nui as part of that environment; Develop cultural exchanges with other Pacific islanders and continental peoples through the celebration of Rapa Nui maritime skills. Jo Anne Van Tilburg Jo Anne Van Tilburg is an American archaeologist best known for her research on the statues of Easter Island (Rapa Nui). Her primary specialty is rock art. Van Tilburg was born in Minneapolis, Minnesota and graduated from the University of Minnesota in 1965, receiving her Ph.D. from the University of California
Easter Island other artifacts. However, land clearing for cultivation and the introduction of the Polynesian rat led to gradual deforestation. By the time of European arrival in 1722, the island's population was estimated to be 2,000–3,000. European diseases, Peruvian slave raiding expeditions in the 1860s, and emigration to other islands, e.g. Tahiti, further depleted the population, reducing it to a low of 111 native inhabitants in 1877. Chile annexed Easter Island in 1888. In 1966, the Rapa Nui were granted Chilean citizenship. In 2007 the island gained the constitutional status of "special territory." Administratively, it belongs to the Valparaíso Region, comprising a