Two Azores shipwrecks and insect biological invasions during the Age of Discovery

UIDB/04666/2021 UIDP/04666/2021Insect faunas from a Spanish and a Dutch shipwreck, Angra D and Angra C, recovered from a bay on Terceira island, Angra do Heroísmo, in the Azores, and dated to c. 1650 CE, provide information about the onboard ecology of seventeenth century shipping vessels and the role of these ships and of contemporary maritime routes in biological invasions. In addition to evidence for foul conditions, there is evidence for similar insect faunas on both these ships. The assemblages include the earliest records of the now cosmopolitan synanthropic scuttle fly Dohrniphora cornuta (Bigot) which was probably introduced through trade from southeast Asia to Europe. The presence of the American cockroach, Periplaneta americana (L.) from Angra D, in the context of other sixteenth and seventeenth century records from shipwrecks, gives information about its spread to North America and Europe through transatlantic and transpacific trade, hitching a ride with traded commodities. The insect data point to the importance of introduced taxa on traded commodities and ballast, transported from port to port, and the role of ports of call like Angra in the Azores, as hot spots for biological invasions.publishersversionpublishe

Ephemeral Materiality: Biographical Approach to Medieval Wooden Crafts from Hoyo de los Herreros Cave (Cantabria, Spain)

The wooden assemblage recovered from Hoyo de los Herreros cave (Reocín, Cantabria, Spain) in northern Iberia has provided an exceptional opportunity to enlarge our knowledge about perishable material culture from a unique medieval context. This case study enhances the information related to ephemeral material culture associated with the occupation of caves during the Middle Ages in northern Iberia, and the role played by wooden crafts in relation to activities performed within these dark and subterrain areas. All the wooden objects have been systematically studied and dated, combining wood analysis and morpho-technological study with the examination of entomological remains recovered from one of the objects which was in an advanced state of decay. The three bowls and a pointed twig recovered inside the cave were probably related to two different episodes of use, the first dated between 9th to 11th centuries CE, and the second between 11th and 12th centuries CE. It was possible to identify different stages of their chaîne-opératoires and the analysis of different aspects of their lifecycle, in tandem with the study of medieval wood crafting, specifically lathe-turning.MMS was funded by a RETOS call mod. JIN “Born to be wild. Crafting wild plants resources during Iron Age in the North of Iberia (B-WILD)” (PID2019-105302RJ-I00) and a Beatriz Galindo program as Junior Distinguished Researcher (BG20/00076) leading the project “WILDCrafting wild plants resources during Bronze and Iron Age in the North of Iberia”. The radiocarbon dating has been funded in the framework of the project “MATERIAL-Materiality and Material Culture: Wood and Other Plant-based Materials in Archaeological Contexts” of the Post-Doc Grant Plan I2C mod. B (ED481D 2017/16) and by the grant “Ayudas para la aplicaci´on de metodologías y técnicas de las ciencias experimentales/analiticas en arqueo-paleontología” funded by Fundación PALARQ

A very curious larder – Insects from post-medieval Skálholt, Iceland, and their implications for interpreting activity areas

Fossil insect assemblages from post-medieval Skálholt, the oldest episcopal see in Iceland, provide new information about indoor environments and the specific use of a structure which according to historical information was listed as a larder attached to the episcopal school. The assemblages recovered also provide information on the background fauna which comprises of species related to turves, used for building construction and indicating storage of peat. In addition to the introduced Sitophilus granarius, the granary weevil, a new pest, Callosobruchus maculatus which is a pan-tropical and subtropical field and storage pest of legumes, and a rarely introduced species in Iceland even today, were also recovered from the site. In view of the nature of the assemblages, these were probably accidental introductions into the room, perhaps in faeces. The historical record provides information about the life history and events at Skálholt and data about school supplies including imports of stored products to Iceland during this period. In addition, the high numbers of sheep keds, Melophagus ovinus, combined with high numbers of human lice, Pediculus humanus, point to the washing of wool and clothing in urine to get rid of ectoparasites. Intra-site comparisons and a review of all Icelandic archaeological sites suggest a clear correlation between the presence of ectoparasites and wool preparation and cleaning. The results from Skálholt clearly show that rooms and specific spaces in post-medieval buildings could have multiple functions, not only the one assigned to them in the historical record

Is there anybody in there? Entomological evidence from a boat burial at Øksnes in Vesterålen, northern Norway

<div><p>Although there are several well preserved Viking boat burials from Norway, until recently palaeoecological research on their context has often been limited. Research on fossil insect remains in particular can provide valuable forensic information even in the absence of an actual body. Here we present archaeoentomological information from a boat burial at Øksnes in Vesterålen, northeast Norway, an area where Norse and Sami traditions overlap. Excavated in 1934, organic preservation from the burial was limited to parts of the boat and a clump of bird feathers which were preserved in the Tromsø University Museum, and from which fossil insects were recovered. The insect assemblage from Øksnes includes the blowfly, <i>Protophormia terraenovae</i> (Rob.-Des.), which indicates exposure of the body and the probable timing of the burial. The high numbers of the human flea, <i>Pulex irritans</i> L. from among the feathers, suggests that these, probably from a pillow under the corpse, originated from within a domestic context. Deposition of flowers as part of the burial is discussed on the basis of the insect fauna. The absence of a body and any associated post burial decay fauna implies its exhumation and disposal elsewhere and this is discussed in the context of other exhumed medieval burials and Saga and other sources.</p></div

Submerged Mesolithic plant remains reveal lush thermophilous woodland on remote isle off the SW-Norwegian coast

A palaeoecological multidisciplinary study from a well-preserved bark dominated structure and other organic sediments are presented. The study provides new data about Mesolithic coastal environments and includes a reconstruction of concurrent vegetation units, concluding that thermophilous woodland was established at the outer SW-Norwegian coast as early as 9000-8500 cal. BP. A pine bark dominated, possibly human made, structure was recovered from the former seabed at the Kvitsøy archipelago. The study involves various palaeoecological proxies, and synthesises results from soils, pollen, macro botanical remains, insect and mite analyses. The organic deposits are beach-derived, possibly trampled in sediments and includes abundant well-preserved waterlogged plant remains and arthropods. Species from the tidal zone are well represented, and upland taxa from fen and swamp communities, coastal heath and open woodland including Pinus sylvestris L., Betula pubescens L., and more warm demanding species such as Malus sylvestris (L.) Mill, Crataegus L., Prunus padus L., Quercus L., Betula pendula Roth, Corylus avellana L., Alnus glutinosa (L.) Gaertn and possibly Ulmus glabra Huds. and Tilia cordata Mill. Wild apples and hazelnuts were infested by the moth Cydia pomonella (L.) and the weevil Curculio nucum (L.) respectively. The beetle and mite fauna provides evidence of taxa associated with open coastal woodland and the tidal zone and driftwood. A large variety of edible plants are documented, of which seeds, fruits, roots, a.o., indicate the possibility of their seasonal collection from spring until late autumn. The plant and insect data provide additional evidence which could be associated with human impact. These results highlight the importance of integrated palaeoecological studies for establishing facts about past local environments and detecting slight human impact from this and similar contexts