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Linderholm, Johan, DocentORCID iD iconorcid.org/0000-0001-7471-8195
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Publications (10 of 179) Show all publications
Sjölander, M., Linderholm, J., Geladi, P. & Buckland, P. I. (2024). Quartzite complexities: Non-destructive analysis of bifacial points from Västerbotten, Sweden. Journal of Archaeological Science: Reports, 53, Article ID 104381.
Open this publication in new window or tab >>Quartzite complexities: Non-destructive analysis of bifacial points from Västerbotten, Sweden
2024 (English)In: Journal of Archaeological Science: Reports, ISSN 2352-409X, E-ISSN 2352-4103, Vol. 53, article id 104381Article in journal (Refereed) Published
Abstract [en]

Northern Fennoscandia is a geologically complex region affected by both glacial and postglacial processes. Quartzite was a key material type utilized by hunter-gatherers in Northern Sweden around the period 4 000 – 2 000 BP, and is thus critical to the understanding of raw material procurement and material flow within the region. However, there is a severe lack of methodological development in the characterization of these materials, and provenance of locally available geological material is complex and fraught with uncertainty. 126 quartz/quartzite points and preforms were sampled from 47 archaeological sites along the upper Ångerman river valley in Västerbotten, Sweden. The material has been analysed non-destructively using three separate portable spectroscopic instrumentations (Near-infrared, Raman, X-Ray Fluorescence). Evaluation of the spectra and exploratory data analysis using Principal Component Analysis demonstrates detectable differences in the material that likely stem from diagenetic/paragenetic origin. The presence of graphite, muscovite and biotite could likewise provide information on the material’s metamorphic grade. In addition to reaffirming the potential of field-based screening instrumentation, these results will benefit future surveys of geological sources in the region. They also indicate potential for the construction of a predictive model that could classify the quartzite based on its chemical characteristic. Such a model would prove useful in future spatial analysis and testing of models of raw material management.

Place, publisher, year, edition, pages
Elsevier, 2024
Keywords
archaeology, spectroscopy, chemometrics, quartzite, bifacial point, Sweden
National Category
Archaeology
Identifiers
urn:nbn:se:umu:diva-219848 (URN)10.1016/j.jasrep.2024.104381 (DOI)2-s2.0-85183532858 (Scopus ID)
Available from: 2024-01-22 Created: 2024-01-22 Last updated: 2024-02-13Bibliographically approved
Klaminder, J., Fassl, M., Baudet, M., Östlund, L., Linderholm, J. & Zale, R. (2023). Landscape of ice and fire: uniquely well-preserved scots pine trunks reveal forest fires near the retreating weichselian ice margin. Vegetation History and Archaeobotany
Open this publication in new window or tab >>Landscape of ice and fire: uniquely well-preserved scots pine trunks reveal forest fires near the retreating weichselian ice margin
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2023 (English)In: Vegetation History and Archaeobotany, ISSN 0939-6314, E-ISSN 1617-6278Article in journal (Refereed) Epub ahead of print
Abstract [en]

Environmental conditions for trees that established in central Fennoscandia shortly after the final retreat of the Weichselian ice sheet remain poorly understood. In this study we examine tree rings of five well-preserved Pinus sylvestris (Scots pines) that grew in the area in front of the retreating ice sheet in northern Sweden. They became buried in flood sediments deposited by a glacial outburst flood (jökulhlaup) about 9.5–9.9 kyr cal bp and the aim of our study was to search for information regarding damage from fires and bioclimatic conditions in their ancient tree ring records. Our analysis, providing a glimpse into the local early Holocene environment in north-central Sweden, suggests that: 1, there were repeated fires (four fire events detected) during the early Holocene; and 2, bioclimatic conditions when the ancient pines were growing resembled those of modern sub-alpine pine woods. The latter is indicated by their patterns of tree ring growth (growth rate and variation), which were statistically similar to those of pines growing in sub-alpine woods with an open canopy, but different from pines in protected and managed boreal forests. Lower δ13C for the ancient latewood in comparison to pine wood from trees growing near the Scandinavian mountains before the 1850s were probably caused both by stomata fractionation due to lower atmospheric CO2 during the early Holocene and by the moist local environment created by the nearby ancient Ancylus lake, which preceded the Baltic Sea. Periods with cloudy and cold summers were also indicated by the occurrence of ‘false rings’. Finds of charred fragments of Calluna vulgaris (heather, ling), an understory shrub that can burn even with a relatively high moisture content, suggest that heath vegetation was crucial to make fire a reoccurring ecological factor in the area during the early Holocene.

Place, publisher, year, edition, pages
Springer, 2023
Keywords
Climate, Early Holocene, Forest fires, Forest history, Lycksele, Pinus sylvestris
National Category
Forest Science
Identifiers
urn:nbn:se:umu:diva-218105 (URN)10.1007/s00334-023-00974-6 (DOI)2-s2.0-85178969112 (Scopus ID)
Funder
Swedish Research Council, 2017–04548Wallenberg Foundations, WAF
Available from: 2023-12-15 Created: 2023-12-15 Last updated: 2023-12-15
Eriksson, S., Linderholm, J. & Östman, S. (2023). Markkemiska undersökningar av boplatserna L2020:4612 och L2020:4613, Umeå socken, Umeå kommun, Västerbotten. Umeå: Umeå University
Open this publication in new window or tab >>Markkemiska undersökningar av boplatserna L2020:4612 och L2020:4613, Umeå socken, Umeå kommun, Västerbotten
2023 (Swedish)Report (Other academic)
Place, publisher, year, edition, pages
Umeå: Umeå University, 2023. p. 8
Series
Environmental Archaeology Laboratory Reports ; 2023-017
Keywords
markkemisk - fysikalisk analys
National Category
Archaeology
Research subject
environmental archaeology
Identifiers
urn:nbn:se:umu:diva-219289 (URN)
Available from: 2024-01-10 Created: 2024-01-10 Last updated: 2024-01-11Bibliographically approved
Östman, S., Hristova, I., Linderholm, J. & Eriksson, S. (2023). Miljöarkeologisk analys av ett prov från en grop. L2023:561, Tåbergsgården, Herrestad socken, Uddevalla kommun, Bohuslän. Umeå: Umeå University
Open this publication in new window or tab >>Miljöarkeologisk analys av ett prov från en grop. L2023:561, Tåbergsgården, Herrestad socken, Uddevalla kommun, Bohuslän
2023 (Swedish)Report (Other academic)
Place, publisher, year, edition, pages
Umeå: Umeå University, 2023. p. 3
Series
Environmental Archaeology Laboratory Reports ; 2023-011
Keywords
archaeobotany, macrofossil analysis, phosphate analysis, magnetic susceptibility, Sweden
National Category
Archaeology
Research subject
environmental archaeology
Identifiers
urn:nbn:se:umu:diva-218328 (URN)
Available from: 2023-12-19 Created: 2023-12-19 Last updated: 2023-12-19Bibliographically approved
Östman, S., Linderholm, J. & Eriksson, S. (2023). Miljöarkeologisk analys av prover från ett gravfält inom L1959:501, Raä Kville 1488, Kville socken, Tanum kommun, Bohuslän. Umeå: Umeå University
Open this publication in new window or tab >>Miljöarkeologisk analys av prover från ett gravfält inom L1959:501, Raä Kville 1488, Kville socken, Tanum kommun, Bohuslän
2023 (Swedish)Report (Other academic)
Place, publisher, year, edition, pages
Umeå: Umeå University, 2023. p. 13
Series
Environmental Archaeology Laboratory Reports ; 2023-008
Keywords
makrofossilanalys, XRF analys, markkemisk - fysikalisk analys
National Category
Archaeology
Research subject
environmental archaeology
Identifiers
urn:nbn:se:umu:diva-219287 (URN)
Available from: 2024-01-10 Created: 2024-01-10 Last updated: 2024-01-11Bibliographically approved
Östman, S., Linderholm, J., Buckland, P., Hristova, I., Monzon, M., Eriksson, L. & Wallin, J.-E. (2023). Miljöarkeologiska analyser av prover från L1988:5459, Innerstaden 2:1/Mårtenstorget, Lund stad och kommun, Skåne. Umeå: Umeå University
Open this publication in new window or tab >>Miljöarkeologiska analyser av prover från L1988:5459, Innerstaden 2:1/Mårtenstorget, Lund stad och kommun, Skåne
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2023 (Swedish)Report (Other academic)
Place, publisher, year, edition, pages
Umeå: Umeå University, 2023. p. 8
Series
Environmental Archaeology Laboratory Reports ; 2023-035
Keywords
archaeobotany, pollen analysis, 14C, insect analysis, XRF analysis, Sweden
National Category
Archaeology
Research subject
environmental archaeology
Identifiers
urn:nbn:se:umu:diva-218333 (URN)
Available from: 2023-12-19 Created: 2023-12-19 Last updated: 2023-12-19Bibliographically approved
Linderholm, J., Eriksson, S., MacPhail, R. & Jerand, P. (2023). Soil chemical analysis on samples from a medieval moat at Paradis 51, Lund, Scania, Sweden: Interim report. Umeå: Umeå universitet
Open this publication in new window or tab >>Soil chemical analysis on samples from a medieval moat at Paradis 51, Lund, Scania, Sweden: Interim report
2023 (English)Report (Other academic)
Place, publisher, year, edition, pages
Umeå: Umeå universitet, 2023. p. 13
Series
Environmental Archaeology Laboratory Reports ; 2023-007
Keywords
soil chemistry, micromorphology
National Category
Archaeology
Research subject
environmental archaeology
Identifiers
urn:nbn:se:umu:diva-215535 (URN)
Available from: 2023-10-20 Created: 2023-10-20 Last updated: 2023-10-20Bibliographically approved
Jerand, P., Klaminder, J. & Linderholm, J. (2023). The legacy of ecological imperialism in the Scandes: earthworms and their implications for Arctic research. Arctic, Antarctic and Alpine research, 55(1), Article ID 2274650.
Open this publication in new window or tab >>The legacy of ecological imperialism in the Scandes: earthworms and their implications for Arctic research
2023 (English)In: Arctic, Antarctic and Alpine research, ISSN 1523-0430, E-ISSN 1938-4246, Vol. 55, no 1, article id 2274650Article in journal (Refereed) Published
Abstract [en]

In the nineteenth century, numerous settlements were established in the alpine region of Fennoscandia (the Scandes), an area that later became a major international scene for Arctic research. Here we raise awareness of this era and show that earthworm-driven bioturbation in “pristine” soils around contemporary Arctic research infrastructure is caused by soil fauna left behind during early land use. We use soil preserved under an alpine settlement to highlight that soils were not bioturbated when the first house was built at a site where bioturbation is now widespread. A review of archived material with unique site-specific chronology constrained the onset of bioturbation to the post-1871 era. Our results suggest that small-scale land use introduced earthworms that now thrive far beyond the realms of former cultivated fields. The legacy of soil fauna from this example of “ecological imperialism” still lingers and should be considered when studying soils of the Scandes.

Place, publisher, year, edition, pages
Taylor & Francis, 2023
Keywords
Archaeology, bioturbation, historical sources, phosphate analysis, soil classification
National Category
Ecology Soil Science
Research subject
Archaeology; environmental archaeology
Identifiers
urn:nbn:se:umu:diva-217053 (URN)10.1080/15230430.2023.2274650 (DOI)2-s2.0-85177559253 (Scopus ID)
Available from: 2023-11-27 Created: 2023-11-27 Last updated: 2023-11-30Bibliographically approved
Hristov, K., Linderholm, J., Eriksson, S. & Hristova, I. (2022). Environmental archaeological analysis of sediment samples retrieved from bronze artefacts, Site L2021:2810, Alingsås, Västergötland. Umeå: Umeå University
Open this publication in new window or tab >>Environmental archaeological analysis of sediment samples retrieved from bronze artefacts, Site L2021:2810, Alingsås, Västergötland
2022 (English)Report (Other academic)
Place, publisher, year, edition, pages
Umeå: Umeå University, 2022. p. 14
Series
Environmental Archaeology Laboratory Reports ; 2022-003
Keywords
archaeobotany, macrofossil analysis, phosphate analysis, magnetic susceptibility, XRF analysis, Sweden
National Category
Archaeology
Research subject
environmental archaeology
Identifiers
urn:nbn:se:umu:diva-218531 (URN)
Available from: 2023-12-20 Created: 2023-12-20 Last updated: 2023-12-20Bibliographically approved
Geladi, P., Linderholm, J. & Vidman, A. (2022). Hyperspectral imaging and analysis. In: R.A. Meyers (Ed.), Encyclopedia of analytical chemistry: applications, theory and instrumentation (pp. 1-15). Chichester: John Wiley & Sons
Open this publication in new window or tab >>Hyperspectral imaging and analysis
2022 (English)In: Encyclopedia of analytical chemistry: applications, theory and instrumentation / [ed] R.A. Meyers, Chichester: John Wiley & Sons, 2022, p. 1-15Chapter in book (Refereed)
Abstract [en]

The concept of a hyperspectral image and the different technical steps of acquiring one are described. This includes sampling, illumination, camera calibration, and image file recording. This enables the powerful combination of being able to combine the traditional image with nonvisible chemical information and to geographically relate these types of information to each other. Hyperspectral imaging produces large data sets with geometrical-georeferenced and spectral information. A technique such as principal component analysis (PCA) produces a subset of images with the information concentrated in a few graphs and noise left out. Interactive analysis of image and scatter plots allows cleaning, and on the cleaned images a new PCA or other multivariate method can be used, creating principal component images containing the relevant information. Using this approach, latent clusters can be detected that are not evident in the initial stage of analysis. There is a large aspect of data mining involved in hyperspectral imaging analysis, which means that visual inspection and interactive brushing is one way of approaching an image with an abundance of complex information.

Place, publisher, year, edition, pages
Chichester: John Wiley & Sons, 2022
Keywords
Imaging, image analysis, chemometry
National Category
Environmental Sciences Analytical Chemistry
Identifiers
urn:nbn:se:umu:diva-205655 (URN)10.1002/9780470027318.a9805 (DOI)9780471976707 (ISBN)9780470027318 (ISBN)
Available from: 2023-03-13 Created: 2023-03-13 Last updated: 2023-03-21Bibliographically approved
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ORCID iD: ORCID iD iconorcid.org/0000-0001-7471-8195

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