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Taxonomic inflation due to inadequate sampling: are girdled lizards (Cordylus minor species complex) from the Great Karoo one and the same?
No full textTolley, Krystal A., Telford, Nicolas S., Taft, Jody M., Bates, Michael F., Conradie, Werner, Makhubo, Buyisile G., Alexander, Graham J. (2022): Taxonomic inflation due to inadequate sampling: are girdled lizards (Cordylus minor species complex) from the Great Karoo one and the same? Biological Journal of the Linnean Society 135: 1-24, DOI: 10.1093/biolinnean/blab11
FIGURE 12 in A molecular phylogeny of the African plated lizards, genus Gerrhosaurus Wiegmann, 1828 (Squamata: Gerrhosauridae), with the description of two new genera
No full textFIGURE 12. Gerrhosaurus bulsi (PEM R18941) from Kalumbila Village, Northwest Province, Zambia. (Photo: W.R. Branch)Published as part of Bates, Michael F., Tolley, Krystal A., Edwards, Shelley, Davids, Zoë, Da Silva, Jessica M. & Branch, William R., 2013, A molecular phylogeny of the African plated lizards, genus Gerrhosaurus Wiegmann, 1828 (Squamata: Gerrhosauridae), with the description of two new genera, pp. 465-493 in Zootaxa 3750 (5) on page 485, DOI: 10.11646/zootaxa.3750.5.3, http://zenodo.org/record/24706
Figure 2 in Taxonomic inflation due to inadequate sampling: are girdled lizards (Cordylus minor species complex) from the Great Karoo one and the same?
No full textFigure 2. Girdled lizards in the Cordylus minor species complex from South Africa according to the original taxonomy – (A) C. aridus (type locality), (B) C. cloetei (near type locality), (C) C. minor (type locality), (D) C. imkeae (type locality), (E) C. mclachlani, (F) C. cordylus.Published as part of Tolley, Krystal A., Telford, Nicolas S., Taft, Jody M., Bates, Michael F., Conradie, Werner, Makhubo, Buyisile G. & Alexander, Graham J., 2022, Taxonomic inflation due to inadequate sampling: are girdled lizards (Cordylus minor species complex) from the Great Karoo one and the same?, pp. 1-24 in Biological Journal of the Linnean Society 135 on page 4, DOI: 10.1093/biolinnean/blab119, http://zenodo.org/record/784946
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Figure 5 in Taxonomic inflation due to inadequate sampling: are girdled lizards (Cordylus minor species complex) from the Great Karoo one and the same?
No full textFigure 5. Network of (A) 16S, (B) ND2 and (C) PRLR for the Cordylus minor species complex. The size of the circles is proportional to the frequency of individuals with that haplotype/allele, and the branch lengths are proportional to the number of mutations. The branches interrupted by hatch marks are shortened, with the number of mutations along that branch indicated. The colours represent the proportion of taxa with that haplotype/allele.Published as part of Tolley, Krystal A., Telford, Nicolas S., Taft, Jody M., Bates, Michael F., Conradie, Werner, Makhubo, Buyisile G. & Alexander, Graham J., 2022, Taxonomic inflation due to inadequate sampling: are girdled lizards (Cordylus minor species complex) from the Great Karoo one and the same?, pp. 1-24 in Biological Journal of the Linnean Society 135 on page 16, DOI: 10.1093/biolinnean/blab119, http://zenodo.org/record/784946
Figure 3 in Taxonomic inflation due to inadequate sampling: are girdled lizards (Cordylus minor species complex) from the Great Karoo one and the same?
No full textFigure 3. Maximum likelihood consensus tree for Cordylus with bootstrap values (top) and Bayesian posterior probabilities (bottom). Support values not shown for intraspecific nodes or for nodes with ≤ 0.90 pp/70% bootstrap. Species delimitation groupings are indicated by the bars for the barcoding analysis, bGMYC for the three-gene (all), and the mitochondrial only (mt) analyses.Published as part of Tolley, Krystal A., Telford, Nicolas S., Taft, Jody M., Bates, Michael F., Conradie, Werner, Makhubo, Buyisile G. & Alexander, Graham J., 2022, Taxonomic inflation due to inadequate sampling: are girdled lizards (Cordylus minor species complex) from the Great Karoo one and the same?, pp. 1-24 in Biological Journal of the Linnean Society 135 on page 14, DOI: 10.1093/biolinnean/blab119, http://zenodo.org/record/784946
Figure 7 in Taxonomic inflation due to inadequate sampling: are girdled lizards (Cordylus minor species complex) from the Great Karoo one and the same?
No full textFigure 7. Species distribution models for the Cordylus minor species complex at four time-slices under a scenario that assumes four separate taxa (non-synonymy of the Karoo taxa) for the (A) Present, (B) Mid-Holocene (6 Kya), (C) Last Glacial Maximum (21 Kya) and (D) Last Interglacial (120 Kya) with shading showing the areas of suitability at the 10% training presence logistic threshold (Supporting Information, Table S5). The most suitable areas for each species are overlaid to show the areas of connectivity between taxa. The location of C. imkeae is indicated by the white diamond.Published as part of Tolley, Krystal A., Telford, Nicolas S., Taft, Jody M., Bates, Michael F., Conradie, Werner, Makhubo, Buyisile G. & Alexander, Graham J., 2022, Taxonomic inflation due to inadequate sampling: are girdled lizards (Cordylus minor species complex) from the Great Karoo one and the same?, pp. 1-24 in Biological Journal of the Linnean Society 135 on page 18, DOI: 10.1093/biolinnean/blab119, http://zenodo.org/record/784946
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