Supporting information for "Inter- and intra-observer variation in phytolith morphometry"
Creators: name: Out, Welmoed A.
name: Dal Corso, Marta
name: Ruiz-Pérez, Javier
name: Evett, Rand
name: Hošková, Kristýna
name: Power, Robert C.
name: Tromp, Monica
name: Vrydaghs, Luc
name: Wade, Kali
name: Hasler, Mario
Publisher: name: Zenodo
Year: 2024
Subjects: Geometric morphometry
Archaeobotany
Botanical microremains
Taxonomic identification
Phytolith analysis
ImageJ

description: This repository contains supporting information for the paper "Inter- and intra-observer variation in phytolith morphometry" by Welmoed A. Out, Rand Evett, Kristýna Hošková, Robert C. Power, Javier Ruiz-Pérez, Monica Tromp, Luc Vrydaghs, Kali Wade and Mario Hasler, published online in Annals of Botany, 2024 (link to paper behind paywall: https://doi.org/10.1093/aob/mcae116).

 

Out et al. 2024 Bilobate

This zip folder contains 50 microscopic photographs of Bilobate phytoliths. The details of the photographs are provided below.

Morphotype: Bilobate (including Cross and intermediate shapes)

Magnification: 630x

Image format: TIFF

Image resolution: 300 dpi

Image dimensions: 2592 x 1944 pixels

Photos taken by W.A. Out. Modern plant material. Taxon: Sorghum bicolor. Related publication: Out and Madella (2017).

 

Out et al. 2024 Bulliform

This zip folder contains 50 microscopic photographs of Bulliform flabellate phytoliths. The details of the photographs are provided below.

Morphotype: Bulliform flabellate

Magnification: 63x

Image format: TIFF

Image resolution: 600 dpi

Image dimensions: 1024 x 768 pixels

Photos taken by M. Dal Corso. Archaeological material of unknown taxa from various different archaeological sites in northern Italy and El-Hemmeh, Jordan. Related publications: Contreras et al. (2014), Dal Corso et al. (2017); Dal Corso (2018); Dal Corso (unpublished).

 

Out et al. 2024 Elongate dendritic

This zip folder contains 15 microscopic photographs of Elongate dendritic phytoliths. The details of the photographs are provided below.

Morphotype: elongate dendritics

Magnification: 600x

Image format: TIFF

Image resolution: n=14 144 dpi, n=1 96 dpi.

Image dimensions: 2560 x 1920 pixels

Photos taken by W.A. Out. Archaeological material: Avena sp., most likely A. sativa. Related publication: Out et al. (2021, 2022).

 

Out et al. 2024 Masks Bilobate

Masks of 50 photographs of Bilobate phytoliths collected by eight researchers. It concerns masks from Week 1, photos 1-50. See also the file “Supporting information for the masks”. Masks collected by Welmoed A. Out, Rand Evett, Kristýna Hošková, Robert C. Power, Javier Ruiz-Pérez, Monica Tromp, Luc Vrydaghs and Kali Wade.

 

Out et al. 2024 Masks Bulliform

Masks of 50 photographs of Flabellate bulliform dendritic phytoliths collected by eight researchers. It concerns masks from Week 1, photos 1-50. See also the file “Supporting information for the masks”. Masks collected by Welmoed A. Out, Rand Evett, Kristýna Hošková, Robert C. Power, Javier Ruiz-Pérez, Monica Tromp, Luc Vrydaghs and Kali Wade.

 

Out et al. 2024 Masks Elongate dendritic

Masks of 15 photographs of Elongate dendritic phytoliths collected by eight researchers. It concerns masks from Week 1, photos 35-50. See also the file “Supporting information for the masks”. Masks collected by Welmoed A. Out, Rand Evett, Kristýna Hošková, Robert C. Power, Javier Ruiz-Pérez, Monica Tromp, Luc Vrydaghs and Kali Wade.

 

Supporting information for the masks

Adjustments to the dataset. Based on a selection of supplementary table 2 of the paper Out et al. 2024 in Annals of Botany. Relevant to the photos of week 1.

 

Out et al. 2024 R code M. Hasler. This R file contains the R code for statistical analysis of inter- and intra-observer variation in phytolith morphometry developed by Prof. M. Hasler, Kiel University.

 

Out et al. 2024 Morphometry raw data final. This file contains the raw data of the morphometric measurements from 45 photographs each of phytoliths from three different morphotypes collected by eight participants (final data set).

 

Funding: This research was supported by the Hugo de Vries fund, the Netherlands (HDVF2021-09).