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BackgroundGrass phytoliths are the most common phytoliths in sediments; recognizing grass phytolith types is important when using phytoliths as a tool to reconstruct paleoenvironments. Grass bulliform cells may be silicified to large size parallelepipedal or cuneiform shaped phytoliths, which were often regarded as of no taxonomic value. However, studies in eastern Asia had identified several forms of grass bulliform phytoliths, including rice bulliform phytolith, a phytolith type frequently used to track the history of rice domestication. Identification with a higher level of taxonomic resolution is possible, yet a systematic investigation on morphology of Poaceae bulliform phytoliths is lacking. We aimed at providing a morphological description of bulliform phytoliths of Poaceae from Taiwan based on morphometric measurements in anatomical aspect. The results are important references for paleo-ecological studies.ResultThe morphology of grass bulliform phytoliths is usually consistent within a subfamily; the end profile is relatively rectangular in Panicoideae and Micrairoideae, whereas cuneiform to nearly circular in Oryzoideae, Bambusoideae, Arundinoideae, and Chloridoideae. Bulliform phytoliths were seldom observed in Pooideae. Certain morphotypes are limited to plants growing in specific environments. For example, large, thin, and pointed bulliform phytoliths are associated with wet habitat; Chloridoideae types are mostly from C4 plants occupying open arid places.ConclusionGrass bulliform phytoliths can be identified at least to the subfamily level, and several forms were distinguished within large subfamilies. Previously un-reported silicified cell types, i.e., arm cells and fusoids, and two special trichome phytolith types associated with bulliform phytoliths, were described. Morphometric methods were great tools for delimiting morphotypes; with refined morphological classification the association between forms and habit/habitats was revealed. The knowledge provides new ways to interpret phytolith assemblage data, and it is especially useful when the sediments are enriched in large blocky phytoliths.

Human genetic history in East Asia is poorly understood. To clarify population relationships, we obtained genome-wide data from 26 ancient individuals from northern and southern East Asia spanning 9500 to 300 years ago. Genetic differentiation in this region was higher in the past than the present, which reflects a major episode of admixture involving northern East Asian ancestry spreading across southern East Asia after the Neolithic, thereby transforming the genetic ancestry of southern China. Mainland southern East Asian and Taiwan Strait island samples from the Neolithic show clear connections with modern and ancient individuals with Austronesian-related ancestry, which supports an origin in southern China for proto-Austronesians. Connections among Neolithic coastal groups from Siberia and Japan to Vietnam indicate that migration and gene flow played an important role in the prehistory of coastal Asia.

The most westerly Pacific island chain, running from Taiwan southwards through the Philippines, has long been central in debates about the origins and early migrations of Austronesian-speaking peoples from the Asian mainland into the islands of Southeast Asia and Oceania. Focusing on the Cagayan Valley of northern Luzon in the Philippines, the authors combine new and published radiocarbon dates to underpin a revised culture-historical synthesis. The results speak to the initial contacts and long-term relationships between Indigenous hunter-gatherers and immigrant Neolithic farmers, and the question of how the early speakers of Malayo-Polynesian languages spread into and through the Philippines.

A total of 146 glass samples from Daoye, Daoye South, and Wujiancuo in southwestern Taiwan were subjected to elemental analysis using LA-ICP-MS and SEM–EDS. These samples cover a time span from the first to the eighth century CE. The results provide evidence of the existence of multiple long-distance glass exchange networks that directly or indirectly connected Taiwan to Southeast Asia, South Asia, West Asia, and possibly the Mediterranean region. The predominance of the South Asian m-Na-Al glass sub-type 1 suggests that Taiwan mainly participated in the South China Sea maritime glass exchange network, while the identification of a newly recognised sub-type, m-Na-Al low Al low Ca, indicates the possibility of small-scale glass production workshops or a less controlled recipe for m-Na-Al glass production. Furthermore, this research reveals compelling evidence linking early v-Na-Ca glass found in Taiwan to origins in Mesopotamia or Sasanian territories, with the secondary production areas remain unclear. In addition, a potash glass and a Roman HIMT glass were also discovered. The chemical profiles of the potash glass do not align with those of early potash glass, while the HIMT glass can be attributed to the Roman Mediterranean. Taken together, these findings shed light on the intricate maritime exchange networks that operated over vast distances, spanning from the eastern part of the South China Sea to West Asia, covering over eight thousand kilometers. This study thus addresses a significant research gap regarding the maritime exchange of glass during the understudied period of the early to mid-1st millennium CE around the South China Sea and beyond.

The earliest colonisation of oceanic islands by Homo sapiens occurred ~50 000–30 000 years ago in the Western Pacific, yet how this was achieved remains a matter of debate. With a focus on East Asia, the research presented here tests the hypothesis that bamboo rafts were used for these early maritime migrations. The authors review the evidence for Palaeolithic seafaring in East Asia as the context for an experimental archaeology project to build two bamboo watercraft. Sea trials demonstrate the unsuitability of bamboo, at least in East Asia, indicating that more sophisticated and durable vessels would have been required to traverse the Kuroshio Current.

The paper is an introduction to the study of European migration into Asia-Pacific through the case study of northern Taiwan. Here, several Spanish and Dutch colonial outposts were founded during the first part of the seventeenth century. Since 2011 and up to 2016 we have uncovered six burials of the cemetery of the Spanish colony of San Salvador de Kelang (Heping Dao, Keelung) (1626–42). The cemetery was associated with the Convento de Todos los Santos , Convent of All Saints, also discovered anew during our excavations. DNA analysis shows that at least one of the individuals was of European descent. This finding is unprecedented in Asia-Pacific within this early chronological framework. The archaeological evidence stands in contrast to the scarcity of contemporary written information relating to death and burials, both in Spanish and Dutch sources. We use the written sources to contextualize the archaeological data, inquiring about the life trajectories of the European colonists in Taiwan, people who truly lived in a global world. We aim to synthesize these data to create a documentary background for future research towards a better understanding of the European migration patterns into Asia-Pacific within cultural, biological, and demographic dimensions. This study offers a valuable contrast with research on the same topic elsewhere in the world.

We present the results of six years of archaeological work carried out in Heping Dao, Keelung, northern Taiwan. The site has revealed a rich archaeological record spanning a sequence that comprehends most of the history of Taiwan, including the most salient historical landmarks in it. The study of this long-term sequence of habitation in Heping Dao throughout prehistory to current times, allows us to attempt a historical archaeology of the longue duree of the place that in turn enables the establishment of comparisons between periods and raising of specific questions, among them: the general understanding of cultural transformation along the Neolithic and the Iron Age, and in turn the transition Iron Age/Aboriginal historic times in Taiwan, which in our view has to be observed as a history of continuity rather than of interactions; the recognition of the Chinese presence in Taiwan in the pre-European period; the implantation of the European colony and its effects on the local populations; the differing material remains and impacts caused by the presence of preEuropean Chinese and the Qing occupation; and the potential for a comparison between the European and the Japanese colonial projects as seen in the material record.

Taiwan’s aboriginal peoples are thought to be related to ancestral Austronesian-speaking peoples. Currently, Taiwan has 14 officially acknowledged aboriginal tribes. The major crops currently farmed in aboriginal areas are rice ( Oryza sativa ) and foxtail millet ( Setaria italica ). Archeologists recently excavated the remains of several early cultures in Taiwan. The most plentiful plant remains were carbonated rice and foxtail millet grains. The earliest 14 C date of these excavation sites is ∼5,000 bp . These settlements may be those of the earliest ancestral Austronesian speakers in Taiwan. Rice domestication is a complex story. In this study, we identified the functional nucleotide polymorphisms of 16 domestication-related genes using 60 landraces collected from aboriginal Taiwanese villages about 100 years ago. We also screened the phenotypes of these landraces. By integrating pheno- and genotypic data, together with data from archeologists and linguists, we may be able to better understand the history of rice cultivation in Taiwan and nearby areas.

Murowchick et al present an obituary of Kwang-chih (K.C.) Chang who died on Jan 3, 2001. Born in Beijing in 1931, his death marked the end of a brilliant career that links the emergence of scientific archeology in China.