scholarly journals An Early Inupiaq Occupation: Observations on a Thule House From Cape Espenberg, Alaska

2017 ◽  
Vol 3 (1) ◽  
Author(s):  
Lauren E. Y. Norman ◽  
T. Max Friesen ◽  
Claire Alix ◽  
Michael J. E. O’Rourke ◽  
Owen K. Mason

AbstractThis paper describes and interprets a well-preserved early Thule semi-subterranean dwelling from Cape Espenberg, Alaska. The house architecture is similar in many respects to other early Thule dwellings with a sub-rectangular main room, long sunken entrance tunnel, and associated kitchen area. However, the presence of narrow side benches and associated flooring differences adds significantly to the variability present in Thule house form. Radiocarbon dates indicate occupations spanning 1300 to 1450 cal CE. Wood analysis suggests that the house underwent at least one rebuilding episode, which seems to have extended the house occupation into the early 15th century. People acquired mostly small seals for their subsistence, but supplemented their diets in the spring and fall with migrating birds, fish, terrestrial mammals, and other marine mammals. This house represents a fairly typical early Thule coastal winter occupation, but careful excavation of a well-preserved house reveals interesting details in house form, wood use, and subsistence patterns.

Radiocarbon ◽  
2021 ◽  
pp. 1-21
Author(s):  
Dorota Dzierzbicka ◽  
Katarzyna Danys

ABSTRACT The paper presents and discusses a series of radiocarbon (14C) dates from a medieval Nubian monastery found on Kom H of Old Dongola, the capital of the kingdom of Makuria located in modern-day Sudan. The monastery was founded in the 6th–7th century AD and although it probably ceased to function in the 14th century, the site remained occupied until the beginning of the 15th century. The investigated courtyard of the monastery was in use from the 11th to the 14th century, as indicated by the ceramics and 14C analysis results presented here. The dates under consideration are the first published series of 14C dates from this site, which is of crucial importance for historical research on medieval Nubian Christianity and monasticism. They permit to begin building an absolute chronological framework for research on the archaeological finds from the site and region. A group of finds in particular need of such a framework are ceramics, and the implications of the 14C dates for pottery assemblages found in the dated contexts are discussed. The conclusions summarize the significance of the datings for the history of the site.


AmS-Skrifter ◽  
2021 ◽  
pp. 1-300
Author(s):  
Trond Løken

The ambition of this monograph is to analyse a limited number of topics regarding house types and thus social and economic change from the extensive material that came out of the archaeological excavation that took place at Forsandmoen (“Forsand plain”), Forsand municipality, Rogaland, Norway during the decade 1980–1990, as well as the years 1992, 1995 and 2007. The excavation was organised as an interdisciplinaryresearch project within archaeology, botany (palynological analysis from bogs and soils, macrofossil analysis) and phosphate analysis, conducted by staff from the Museum of Archaeology in Stavanger (as it was called until 2009, now part of the University of Stavanger). A large phosphate survey project had demarcaded a 20 ha settlement area, among which 9 ha were excavated using mechanical topsoil stripping to expose thehabitation traces at the top of the glaciofluvial outwash plain of Forsandmoen. A total of 248 houses could be identified by archaeological excavations, distributed among 17 house types. In addition, 26 partly excavated houses could not be classified into a type. The extensive house material comprises three types of longhouses, of which there are as many as 30–40 in number, as well as four other longhouse types, of which there are only 2–7 in number. There were nine other house types, comprising partly small dwelling houses and partly storage houses, of which there were 3–10 in number. Lastly, there are 63 of the smallest storage house, consisting of only four postholes in a square shape. A collection of 264 radiocarbon dates demonstrated that the settlement was established in the last part of the 15th century BC and faded out during the 7th–8th century AD, encompassing the Nordic Bronze Age and Early Iron Age. As a number of houses comprising four of the house types were excavated with the same methods in the same area by the same staff, it is a major goal of this monograph to analyse thoroughly the different featuresof the houses (postholes, wall remains, entrances, ditches, hearths, house-structure, find-distribution) and how they were combined and changed into the different house types through time. House material from different Norwegian areas as well as Sweden, Denmark, Germany and the Netherlands is included in comparative analyses to reveal connections within the Nordic area. Special attention has been given to theinterpretation of the location of activity areas in the dwelling and byre sections in the houses, as well as the life expectancy of the two main longhouse types. Based on these analyses, I have presented a synthesis in 13 phases of the development of the settlement from Bronze Age Period II to the Merovingian Period. This analysis shows that, from a restricted settlement consisting of one or two small farms in the Early BronzeAge, it increases slightly throughout the Late Bronze Age to 2–3 solitary farms to a significantly larger settlement consisting of 3–4 larger farms in the Pre-Roman Iron Age. From the beginning of the early Roman Iron Age, the settlement seems to increase to 8–9 even larger farms, and through the late Roman Iron Age, the settlement increases to 12–13 such farms, of which 6–7 farms are located so close together that they would seem to be a nucleated or village settlement. In the beginning of the Migration Period, there were 16–17 farms, each consisting of a dwelling/byre longhouse and a workshop, agglomerated in an area of 300 x 200 m where the farms are arranged in four E–W oriented rows. In addition, two farms were situated 140 m NE of the main settlement. At the transition to the Merovingian Period, radiocarbon dates show that all but two of the farms were suddenly abandoned. At the end of that period, the Forsandmoen settlement was completely abandoned. The abandonment could have been caused by a combination of circumstances such as overexploitation in agriculture, colder climate, the Plague of Justinian or the collapse of the redistributive chiefdom system due to the breakdown of the Roman Empire. The abrupt abandonment also coincides with a huge volcanic eruption or cosmic event that clouded the sun around the whole globe in AD 536–537. It is argued that the climatic effect on the agriculture at this latitude could induce such a serious famine that the settlement, in combination with the other possible causes, was virtually laid waste during the ensuing cold decade AD 537–546. 


Radiocarbon ◽  
2022 ◽  
pp. 1-16
Author(s):  
Kenechukwu Chidiogo Daniel ◽  
Anselm Maduabuchi Ibeanu ◽  
Jacinta Uchenna Ikegwu ◽  
Emuobosa Akpo Orijemie

ABSTRACT This paper presents new results of radiocarbon (14C) ages from archaeological sites in northern Igboland. The study was designed to shed more light on early human occupation and activities in the study area based on sediments from cave and iron-smelting sites. The approach consisted of ethnographic, archaeological, palynological, and slag analyses; these were complemented with 14C dates. The technology adopted as well as the paleoenvironmental conditions that prevailed during the period of human settlement in both sites was revealed. These data, complemented by 14C dates, highlight the human behavioral and subsistence patterns within the region and are comparable to those from similar sites in southeastern Nigeria.


Radiocarbon ◽  
2012 ◽  
Vol 54 (01) ◽  
pp. 1-22 ◽  
Author(s):  
Nancy Beavan ◽  
Sian Halcrow ◽  
Bruce McFadgen ◽  
Derek Hamilton ◽  
Brendan Buckley ◽  
...  

We present the first radiocarbon dates from previously unrecorded, secondary burials in the Cardamom Mountains, Cambodia. The mortuary ritual incorporates nautical tradeware ceramic jars and log coffins fashioned from locally harvested trees as burial containers, which were set out on exposed rock ledges at 10 sites in the eastern Cardamom Massif. The suite of 2814C ages from 4 of these sites (Khnorng Sroal, Phnom Pel, Damnak Samdech, and Khnang Tathan) provides the first estimation of the overall time depth of the practice. The most reliable calendar date ranges from the 4 sites reveals a highland burial ritual unrelated to lowland Khmer culture that was practiced from cal AD 1395 to 1650. The time period is concurrent with the 15th century decline of Angkor as the capital of the Khmer kingdom and its demise about AD 1432, and the subsequent shift of power to new Mekong trade ports such as Phnom Penh, Udong, and Lovek. We discuss the Cardamom ritual relative to known funerary rituals of the pre- to post-Angkorian periods, and to similar exposed jar and coffin burial rituals in Mainland and Island Southeast Asia.


2014 ◽  
Vol 281 (1797) ◽  
pp. 20142103 ◽  
Author(s):  
Marlee A. Tucker ◽  
Tracey L. Rogers

Predator–prey relationships and trophic levels are indicators of community structure, and are important for monitoring ecosystem changes. Mammals colonized the marine environment on seven separate occasions, which resulted in differences in species' physiology, morphology and behaviour. It is likely that these changes have had a major effect upon predator–prey relationships and trophic position; however, the effect of environment is yet to be clarified. We compiled a dataset, based on the literature, to explore the relationship between body mass, trophic level and predator–prey ratio across terrestrial ( n = 51) and marine ( n = 56) mammals. We did not find the expected positive relationship between trophic level and body mass, but we did find that marine carnivores sit 1.3 trophic levels higher than terrestrial carnivores. Also, marine mammals are largely carnivorous and have significantly larger predator–prey ratios compared with their terrestrial counterparts. We propose that primary productivity, and its availability, is important for mammalian trophic structure and body size. Also, energy flow and community structure in the marine environment are influenced by differences in energy efficiency and increased food web stability. Enhancing our knowledge of feeding ecology in mammals has the potential to provide insights into the structure and functioning of marine and terrestrial communities.


2020 ◽  
pp. 223-248
Author(s):  
David Busbee ◽  
Ian Tizard ◽  
Jeffrey Sroit ◽  
Davide Ferrirc ◽  
Ellen Orr-reeves

This paper provides a detailed review of the immunotoxicological effects of environmental pollutants on the health of marine mammals, particularly in relation to their impact on the immune system and mechanisms of toxicity. Environmental pollutants are increasingly implicated (both directly and indirectly) with the onset of infectious disease and related mortality incidents in marine mammals,. The release of chemicals into the marine environment and the subsequent bioaccumulation up the food chain may pose a serious threat to marine mammals inhabiting contaminated areas; this has been documented in various studies of pollutant concentrations in tissue samples and large scale mass mortalities. Data correlating pollutant residues with altered reproductive/developmental states, and immune system dysfunction in particular, are reported for terrestrial mammals and suggest a similar association in marine mammals. Immunology is emphasised as a tool for assessing marine mammal health using quantitative and qualitative techniques to establish the effects of chemical pollutants. This has become increasingly important in relation to the subsequent dangers that may be posed to humans through any indirect exposure via the food chain.


2009 ◽  
Vol 5 (4) ◽  
pp. 565-567 ◽  
Author(s):  
T. Aran Mooney ◽  
Paul E. Nachtigall ◽  
Stephanie Vlachos

There is increasing concern that human-produced ocean noise is adversely affecting marine mammals, as several recent cetacean mass strandings may have been caused by animals' interactions with naval ‘mid-frequency’ sonar. However, it has yet to be empirically demonstrated how sonar could induce these strandings or cause physiological effects. In controlled experimental studies, we show that mid-frequency sonar can induce temporary hearing loss in a bottlenose dolphin ( Tursiops truncatus ). Mild-behavioural alterations were also associated with the exposures. The auditory effects were induced only by repeated exposures to intense sonar pings with total sound exposure levels of 214 dB re: 1 μPa 2  s. Data support an increasing energy model to predict temporary noise-induced hearing loss and indicate that odontocete noise exposure effects bear trends similar to terrestrial mammals. Thus, sonar can induce physiological and behavioural effects in at least one species of odontocete; however, exposures must be of prolonged, high sound exposures levels to generate these effects.


2000 ◽  
Vol 17 (5) ◽  
pp. 781-788 ◽  
Author(s):  
JEFFRY I. FASICK ◽  
PHYLLIS R. ROBINSON

It has been observed that deep-foraging marine mammals have visual pigments that are blue shifted in terms of their wavelength of maximal absorbance (λmax) when compared to analogous pigments from terrestrial mammals. The mechanisms underlying the spectral tuning of two of these blue-shifted pigments have recently been elucidated and depend on three amino acid substitutions (83Asn, 292Ser, and 299Ser) in dolphin rhodopsin, but only one amino acid substitution (308Ser) in the dolphin long-wavelength-sensitive pigment. The objective of this study was to investigate the molecular basis for changes in the spectral sensitivity of rod visual pigments from seven distantly related marine mammals. The results show a relationship between blue-shifted rhodopsins (λmax ≤ 490 nm), deep-diving foraging behavior, and the substitutions 83Asn and 292Ser. Species that forage primarily near the surface in coastal habitats have a rhodopsin with a λmax similar to that of terrestrial mammals (500 nm) and possess the substitutions 83Asp and 292Ala, identical to rhodopsins from terrestrial mammals.


PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7257 ◽  
Author(s):  
Chang Li ◽  
Xiaoxuan Tan ◽  
Jie Bai ◽  
Qiwu Xu ◽  
Shanshan Liu ◽  
...  

Background Mammalian commensal microbiota play important roles in the health of its host. In comparison to terrestrial mammals, commensal microbiota of marine mammals is mainly focused on the composition and function of skin and gut microbiota, with less attention paid to the health impact of bacteria and viruses. Previous studies on sperm whales (Physeter catodon) have affirmed their important phylogenetic position; however, studies on their commensal microbiota have not been published, due to difficulty in sample collection. Methods Here, we sequenced the metagenomes of blood, muscle and fecal samples from a stranded sperm whale using the BGISEQ-500 platform. We compared the diversity and abundance of microbiomes from three different tissues and tried to search pathogenic bacterial and virulence genes probably related to the health of the sperm whale. We also performed 16S rDNA sequencing of the fecal sample to compare to published gut metagenome data from other marine mammals. Results Our results demonstrated notable differences in species richness and abundance in the three samples. Extensive bacteria, including Enterococcus faecium, Fusobacterium nucleatum, Pseudomonas aeruginosa, Streptococcus anginosus, Streptococcus pneumoniae, and Streptococcus suis, and five toxigenic Clostridium species usually associated with infection, were found in the three samples. We also found the taxa composition of sperm whale gut microbiota was similar to that of other whales, suggesting co-evolution with its host. This study is the first report of the sperm whale gut microbiome, and provides a foundation for the pathogen detection and health assessment of the sperm whale.


2021 ◽  
Vol 12 ◽  
Author(s):  
Rhea L. Storlund ◽  
David A. S. Rosen ◽  
Andrew W. Trites

Although the ability of marine mammals to lower heart rates for extended periods when diving is well documented, it is unclear whether marine mammals have electrophysiological adaptations that extend beyond overall bradycardia. We analyzed electrocardiographic data from 50 species of terrestrial mammals and 19 species of marine mammals to determine whether the electrical activity of the heart differs between these two groups of mammals. We also tested whether physiological state (i.e., anesthetized or conscious) affects electrocardiogram (ECG) parameters. Analyses of ECG waveform morphology (heart rate, P-wave duration, and PQ, PR, QRS, and QT intervals) revealed allometric relationships between body mass and all ECG intervals (as well as heart rate) for both groups of mammals and specific differences in ECG parameters between marine mammals and their terrestrial counterparts. Model outputs indicated that marine mammals had 19% longer P-waves, 24% longer QRS intervals, and 21% shorter QT intervals. In other words, marine mammals had slower atrial and ventricular depolarization, and faster ventricular repolarization than terrestrial mammals. Heart rates and PR intervals were not significantly different between marine and terrestrial mammals, and physiological state did not significantly affect any ECG parameter. On average, ECG interval durations of marine and terrestrial mammals scaled with body mass to the power of 0.21 (range: 0.19–0.23) rather than the expected 0.25—while heart rate scaled with body mass to the power of –0.22 and was greater than the widely accepted –0.25 derived from fractal geometry. Our findings show clear differences between the hearts of terrestrial and marine mammals in terms of cardiac timing that extend beyond diving bradycardia. They also highlight the importance of considering special adaptations (such as breath-hold diving) when analyzing allometric relationships.


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