Results 141 to 150 of about 116,226 (286)

Ecological Insights Into the Extinct Korean Sea Lion (Zalophus japonicus) in Korea Based on Stable Isotope Analysis of Bone Collagen

open access: yesRapid Communications in Mass Spectrometry, Volume 39, Issue 24, 30 December 2025.
ABSTRACT Rationale The Japanese sea lion (Zalophus japonicus), once abundant in Japan, Korea, and Russia, went extinct by the mid‐20th century due to hunting and environmental change. This study examines the diet and ecological role of Korean Z. japonicus using stable carbon and nitrogen isotope analysis of bone collagen from archaeological and ...
Yoon Ji Lee   +4 more
wiley   +1 more source

Kola Peninsula Neolithic

open access: yesАрхеология евразийских степей
The archaeology of the Kola Peninsula is related to the archaeology of neighboring regions. The Early Neolithic (~5.3–4 millennia BC) is characterized by the Säräisniemi 1 ceramics of the two Varzina and Chavanga variants and the Pit-Comb, bifacial stone
Evgeniy M. Kolpakov   +3 more
doaj   +1 more source

Neolithic Growth Rates [PDF]

open access: bronze, 1966
Brandon Barringer
openalex   +1 more source

Environmental gradients and carabid beetle diversity: Insights from wildfire and intensive site preparation in a Central European forest

open access: yesAgricultural and Forest Entomology, Volume 27, Issue 4, Page 613-629, November 2025.
Wildfire and intensive site preparation influence beetle assemblages by shaping habitat heterogeneity, with wildfire fostering biodiversity while disc trenching leads to long‐term species declines due to habitat homogenization. Post‐fire beetle succession follows a predictable trajectory, with early successional species dominating open habitats and ...
Dominik Stočes   +3 more
wiley   +1 more source

Long Term Hybrid Zone Dynamics in Fire‐Bellied Toads Estimated From Environmental Data at Allopatric and Parapatric Scales

open access: yesJournal of Biogeography, Volume 52, Issue 11, November 2025.
ABSTRACT Aim Aims of the study are to identify environmental variables underlying the mutual distribution of a species pair engaged in a long and winding hybrid zone, to reconstruct pattern and process of species' range developments following the Last Glacial Maximum (LGM), and to open research lines for the study of hybrid zone dynamics in a model ...
Jan W. Arntzen
wiley   +1 more source

Chronology of Neolithic Sites in the Social and Cultural Space of the Trans-Urals

open access: yesАрхеология евразийских степей
The concept of social and cultural space of the Neolithic Trans-Urals describes a historical space, considered in terms of the existing cultural traditions of certain societies in the spatial -temporal framework of the VII–V millennia BC (cal BC).
Vadim S. Mosin
doaj   +1 more source

Methodological Considerations for the Use of Acid‐Based Pre‐Treatment Protocols for Carbon and Oxygen Analysis of Tooth Enamel

open access: yesRapid Communications in Mass Spectrometry, Volume 39, Issue 20, 30 October 2025.
ABSTRACT Rationale Chemical pre‐treatment is a common methodological step aimed to remove exogenous materials introduced to archaeological tooth enamel in the burial environment through diagenetic processes. However, some of these methods, involving the use of oxidising reagents such as NaClO, H2O2, as well as weak acids like CH3COOH, have been shown ...
Karolina Varkulevičiūtė   +2 more
wiley   +1 more source

Exploring Early Childhood Diet, Stress, Trophic Position and Dietary Protein Quality Using Amino Acid Nitrogen Isotope Compositions of Fingernail Keratin

open access: yesAmerican Journal of Biological Anthropology, Volume 188, Issue 2, October 2025.
ABSTRACT Objectives Evaluate the effectiveness of compound‐specific nitrogen isotope analysis of amino acids (CSIA‐AA) in reconstructing early childhood diets and detecting episodes of stress. Examine (1) proline's potential for identifying breastfeeding and weaning; (2) the influence of physiological and pathological stress on AA δ15N; (3) the ...
Hana Salahuddin   +2 more
wiley   +1 more source

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