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#EasterIsland

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Lukas VFN 🇪🇺

"The last plant left: can #RapaNui’s #extinct #tree be resurrected? theguardian.com/environment/20

"Seeds from the last #toromiro, unique to #EasterIsland, were taken away in the 60s. After a crucial discovery gave hope for its survival, it is making a return... It belongs to a family of pea #plants that has #symbiosis with soil #bacteria... the toromiro’s bacteria are also likely extinct on Rapa Nui... the team looked for them in related species, and found a match in strands from Chile & New Zealand"

photo of a woman scientist holding a plastic bag with soil samples in a mountainous landscape
Public
Matt Hodgkinson

Genomic evidence from ancient Rapanui people from Easter Island shows that they had around 10% ancestry related to Andean people before Europeans arrived, evidence either that Native Americans lived on the island before Polynesians arrived in the 12-13th century or that Polynesians made it to mainland South America and then backtracked to the island.

nature.com/articles/s41586-024

NatureAncient Rapanui genomes reveal resilience and pre-European contact with the Americas - NatureAn analysis of 15 ancient genomes from individuals dating to AD 1670–1950 from Rapa Nui (also known as Easter Island) addresses questions about the population history of the island.
#Rapanui#Polynesians#PreColumbianAmerica
Public
Flipboard Science Desk

Norway’s Kon-Tiki Museum returns artifacts to Chile’s remote Easter Island.

@AssociatedPress reports: "In 1947, explorer Thor Heyerdahl sailed on a log raft named Kon-Tiki from Peru to Polynesia in 101 days to prove his theory — that the South Sea Islands were settled by seafarers from South America. He brought 5,600 objects back from Easter Island, also known as Rapa Nui. This is the third time objects taken by him are being returned."

flip.it/UvLji_

AP News · Norway's Kon-Tiki Museum returns artifacts to Chile's remote Easter IslandBy JAN M. OLSEN
#EasterIsland#Archaeology#Anthropology
Public
Rich Stein (he/him)

"According to municipal data from Rapa Nui, the island's local name, it receives around 50 times more plastic and microplastic than the coasts of Chile. This is largely due to its location in the South Pacific Gyre, which brings in trash from Australia, South America and fishing vessels."
reuters.com/business/environme
#PlasticPollution #EasterIsland #ocean #oceans #MicroPlastics

Public
Flipboard Science Desk

The “Flying Spaghetti Monster” is one of an “astonishing” array of deep-sea creatures scientists have discovered living near an underwater mountain range off the coast of Rapa Nui, also known as Easter Island, in the Pacific Ocean. Live Science has more: flip.it/wIHd76
#Science #PacificOcean #EasterIsland #MarineBiology #Animals #SeaLife

Live Science · Underwater mountain range off Easter Island hosts creatures unknown to science, expedition revealsBy Sascha Pare
Continued thread
Public
Jens Notroff

Original study:

P. Berenguer et al., Identification of #breadfruit (Artocarpus altilis) and South American crops introduced during early settlement of #RapaNui (#EasterIsland), as revealed through #starch analysis, PLos One 19(3), 2024. 🔓

journals.plos.org/plosone/arti

journals.plos.orgIdentification of breadfruit (Artocarpus altilis) and South American crops introduced during early settlement of Rapa Nui (Easter Island), as revealed through starch analysisStarch residue analysis was carried out on stone tools recovered from the bottom layer of the Anakena site on Rapa Nui (Easter Island). These deposits have been dated to AD 1000–1300 AD and so far, represent the earliest evidence of human settlement on this island. Twenty obsidian tools were analyzed. Analysis of 46 starch grains recovered from 20 obsidian tools from the earliest dated level of the Anakena site on Rapa Nui provides direct evidence for translocation of traditional crop plants at initial stages of the colonization of this island. The analysis of starch grains was based mainly on statistical methods for species identification but was complemented by visual inspection in some cases. Our results identify taxons previously unknown to have been cultivated on the island, such as breadfruit (Artocarpus altilis), Zingiber officinale (ginger), and starch grains of the Spondias dulcis and Inocarpus fagifer tropical trees. Additionally, starch grains of Colocasia esculenta (taro) and Dioscorea sp. (yam), both common species in Pacific agriculture, were identified. Furthermore, the presence of four American taxa Ipomoea batatas (sweet potato), Canna sp. (achira), Manihot esculenta (manioc), and Xanthosoma sp., was detected. The occurrence of Canna sp., M. esculenta, and Xanthosoma sp. starch grains suggests the translocation of previously not described South American cultivars into the Pacific. The detection of I. batatas from this site in Rapa Nui constitutes the earliest record of this cultigen in the Pacific. Our study provides direct evidence for translocation of a set of traditional Polynesian and South American crop plants at the initial stages of colonization in Rapa Nui.
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