Search results for "assemblages"
showing 9 items of 29 documents
Zinc isotopes in Late Pleistocene fossil teeth from a Southeast Asian cave setting preserve paleodietary information
2020
Significance Dietary habits, especially meat consumption, represent a key aspect in the behavior and evolution of fossil hominin species. Here, we explore zinc (Zn) isotope ratios in tooth enamel of fossil mammals. We show discrimination between different trophic levels and demonstrate that Zn isotopes could prove useful in paleodietary studies of fossil hominin, or other mammalian species, to assess their consumption of animal versus plant resources. We also demonstrate the high preservation potential of pristine diet-related Zn isotope ratios, even under tropical conditions with poor collagen preservation, such as the studied depositional context in Southeast Asia. However, assessing the …
Characterization of the metal artefacts of the two craft-quarters of the roman vicus Bliesbruck (Moselle)
2014
Diese Arbeit ist ein vollständiges Studium der Metallfunde aus den zwei Handwerkervierteln von Bliesbruck (Moselle, Frankreich). Diese Funde stammen aus vierzigjahrelangen Ausgrabungen. Das Korpus besteht aus 450 Kg Metall (Eisen, Kupferlegierungen, weisse Metalle, Gold) wovon 4 200 Objekte und 22 000 Nägel. Eine Objekt- und Funktionsidentifizierung und eine typologische Nägelzahl haben es ermöglicht, die Objektverbindungen wieder zusammenzusetzen und die Daten nach verschiedenen Kriterien einander gegenüberzustellen : Metall, Lage (Viertel und Grundstück), Chronologie und Befundnummertyp. Diese Datenüberfülle und -verschiedenheit ermöglichen das Korpus nach vielartigen geographischen Maβst…
The standing of the Southern Côte-d’Or in the evolution of the early Iron Age funeral practices in Burgundy and Franche-Comté
2014
This work is a synthesis of tumuli graves in Burgundy and Franche-Comté from Hallstatt C to La Tene B periods. The objective is to characterize the funeral assemblages in Southern Côte-d’Or as well as the influences and the tendencies that went through this area during the early Iron Age. A set of comparisons shows the particularities of the Southern Côte-d’Or at several levels: the recruitment of the populations, the position and orientation of the deceased, the architecture of the graves and their internal arrangements, the typology and positions of the personals items, the nature and locations of the deposits. These various leads allow reconstituting costumes and mortuary practices, as w…
Disentangling scattered charcoal assemblages for palimpsest dissection: Spatial analyses from El Salt Stratigraphic Unit Xb (Eastern Iberia)
2017
International audience; Disentangling scattered charcoal assemblages for palimpsest dissection: spatial analyses from El Salt Stratigraphic unit Xb (Eastern Iberia)
Larval fish assemblages in the central Mediterranean Sea: spatio spatio-temporal dynamics and biological effect on early life stage of Sardinella aur…
Etnografian reittejä kylien ajallisuuteen ja aineellisuuteen
2020
In my dissertation I have traced novel routes to village research by examining the transformation of the villages through the concepts of temporality and materiality. My research questions are: What kind of temporal trajectories have formed the villages? What kind of things, events, processes or connections have in the course of time been part of the village? I examine the transformations having taken place along various trajectories and focus on how the past and the future are related in the present in certain moments. With material culture I refer especially to the built environment, including the element of landscape. The study is based on ethnographic fieldwork in the Ahvenselkä village…
Temperature effects explain continental scale distribution of cyanobacterial toxins
2018
Insight into how environmental change determines the production and distribution of cyanobacterial toxins is necessary for risk assessment. Management guidelines currently focus on hepatotoxins (microcystins). Increasing attention is given to other classes, such as neurotoxins (e.g., anatoxin-a) and cytotoxins (e.g., cylindrospermopsin) due to their potency. Most studies examine the relationship between individual toxin variants and environmental factors, such as nutrients, temperature and light. In summer 2015, we collected samples across Europe to investigate the effect of nutrient and temperature gradients on the variability of toxin production at a continental scale. Direct and indirect…
Do large‐scale associations in birds imply biotic interactions or environmental filtering?
2023
Aim There has been a wide interest in the effect of biotic interactions on species' occurrences and abundances at large spatial scales, coupled with a vast development of the statistical methods to study them. Still, evidence for whether the effects of within-trophic-level biotic interactions (e.g. competition and heterospecific attraction) are discernible beyond local scales remains inconsistent. Here, we present a novel hypothesis-testing framework based on joint dynamic species distribution models and functional trait similarity to dissect between environmental filtering and biotic interactions. Location France and Finland. Taxon Birds. Methods We estimated species-to-species association…