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New archaeozoological evidence for the introduction of the guinea pig to Europe
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The remains are described of a guinea pig dated to the end of the 16th - beginning of the 17th c. AD. The animal was discovered at a site in Mons, Belgium, and is the first European archaeozoological find dated with certainty on the basis of both the archaeological context and a radiocarbon dating of its bone. This find confirms that the guinea pig was introduced to Europe soon after the conquest of South America. The morphological and metrical analyses performed on the skeletal remains are in agreement with the iconographic and literary sources indicating the domestic status of the animals imported to Europe. While a previous discovery in England suggested that the guinea pig was a prestigious animal, the present study argues that it was accessible to several classes of the population which may be related to the rapid spread of this prolific animal after its introduction in Europe.
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Carbon and nitrogen stable isotope ratio analysis of freshwater, brackish and marine fish from Belgian archaeological sites (1st and 2nd millennium AD)
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Carbon and nitrogen stable isotope ratios were measured in 157 fish bone collagen samples from 15 different archaeological sites in Belgium which ranged in ages from the 3rd to the 18th c. AD. Due to diagenetic contamination of the burial environment, only 63 specimens produced results with suitable C:N ratios (2.9-3.6). The selected bones encompass a wide spectrum of freshwater, brackish, and marine taxa (N = 18), and this is reflected in the d13C results (-28.2‰ to -12.9‰). The freshwater fish have d13C values that range from -28.2‰ to -20.2‰, while the marine fish cluster between -15.4‰ to -13.0‰. Eel, a catadromous species (mostly living in freshwater but migrating into the sea to spawn), plots between -24.1‰ to -17.7‰, and the anadromous fish (living in marine environments but migrating into freshwater to spawn) show a mix of freshwater and marine isotopic signatures. The d15N results also have a large range (7.2‰ to 16.7‰) indicating that these fish were feeding at many different trophic levels in these diverse aquatic environments. The aim of this research is the isotopic characterization of archaeological fish species (ecology, trophic level, migration patterns) and to determine intra-species variation within and between fish populations differing in time and location. Due to the previous lack of archaeological fish isotope data from Northern Europe and Belgium in particular, these results serve as an important ecological backdrop for the future isotopic reconstruction of the diet of human populations dating from the historical period (1st and 2nd millennium AD), where there is zooarchaeological and historical evidence for an increased consumption of marine fish.
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Isotopic reconstruction of human diet and animal husbandry practices during the classical-Hellenistic, Imperial and Byzantine periods at Sagalassos, Turkey
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Wood charcoal and seeds as indicators for animal husbandry in a wetland site during the late mesolithic-early neolithic transition period (Swifterbant culture, ca. 4600-4000 B.C.) in NW Belgium
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Chronostratigraphic context of the Middle to Upper Palaeolithic transition. Recent data from Belgium
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Life strategy traits of the liana Sericostachys scandens spreading in the montane forests in the Kahuzi-Biega National Park (DR Congo).
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Sericostachys scandens is a monocarpic and heliophilous liana, native in tropical African forests. In the montane forests of the Kahuzi-Biega National Park (KBNP) (East of DR Congo), it has been expanding very strongly for a decade, and is currently considered as having negative impacts on biodiversity conservation. In this paper, we test if S. scandens differs from three co-occurring, native, non spreading lianas (Gouania longispicata, Tacazzea apiculata and Adenia bequaertii) for functional traits which might influence plant expansion. For leaf traits (SLA, dry matter content, nitrogen concentration), S. scandens did not show extreme values compared to those of the three other lianas. In contrast, S. scandens had much higher biomass allocation to sexual reproduction. It also differs from the three other lianas for its reproductive strategy that combines both vegetative propagation and sexual reproduction, and propagule dispersal by wind. Moreover, S. scandens has larger leaves and a greater number of lateral branches per unit stem length. It is argued that the particular combination of functional traits exhibited by S. scandens may in part explain its propensity to behave as an opportunistic weed in the disturbed areas in the montane forests of Kahuzi-Biega.
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Phylogeny, diversity, and species delimitation of the Xiphinema americanum-group complex (Nematoda: Longidoridae), as inferred from nuclear and mitochondrial DNA sequences and morphology
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Seven new species of Trichodorus (Diphtherophorina, Trichodoridae) from Spain, an apparent centre of speciation.
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Morphological and molecular characterisation of Xiphinema zagrosense sp.n. (Dorylaimida: Longidoridae) from the Zagros Mountains, Iran
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Virtual reconstruction of the Neandertal lower limbs with an estimation of hamstring muscle moment arms
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A major problem of fossil hominid analysis is a lack of complete specimens. Many individual specimens have been damaged by the effects of diagenesis and excavation. Significant advances in the field of three dimensional image processing (3D) have enabled the creation of accurately scaled reconstructions of individual fossil bones using mirrored parts of the same fossil bone or human/fossil hominid equivalents. This study presents, for the first time, a method to reconstruct a 3D virtual model of the lower limb of the Neandertal using different bones from different fossil remains (Spy II, Neandertal 1 and Kebara 2) and integrating them into a single model of the Neandertal lower limb. A biomechanical analysis of the model was performed, including computer graphics visualization of the results, motion displacement graphs and muscle moment arms. The overall method has been implemented into an open-source customized software (lhpFusionBox) developed for the biomechanical study of the musculoskeletal system.
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