1,721,155 research outputs found
Gomphonema yaominae sp. nov. Li, a new species of diatom (Bacillariophyta) from lakes near Yangtze River, China
No full textGong, Zhijun, Li, Yanling (2012): Gomphonema yaominae sp. nov. Li, a new species of diatom (Bacillariophyta) from lakes near Yangtze River, China. Phytotaxa 54: 59-64, DOI: 10.11646/phytotaxa.54.1.6, URL: http://biotaxa.org/Phytotaxa/article/view/phytotaxa.54.1.
PLATE 1, FIGURES 1–6 in Gomphonema yaominae sp. nov. Li, a new species of diatom (Bacillariophyta) from lakes near Yangtze River, China
No full textPLATE 1, FIGURES 1–6. Gomphonema yaominae. LM images of valve views showing the size diminution series for the species. Figure 1 = holotype. Scale bar = 10 µm.Published as part of Gong, Zhijun & Li, Yanling, 2012, Gomphonema yaominae sp. nov. Li, a new species of diatom (Bacillariophyta) from lakes near Yangtze River, China, pp. 59-64 in Phytotaxa 54 on page 61, DOI: 10.11646/phytotaxa.54.1.6, http://zenodo.org/record/481484
New species of Cymbella and Placoneis (Bacillariophyta) from late Pleistocene Fossil, China
No full textGong, Zhijun, Li, Yanling, Metzeltin, Ditmar, Lange-Bertalot, Horst (2013): New species of Cymbella and Placoneis (Bacillariophyta) from late Pleistocene Fossil, China. Phytotaxa 150 (1): 29-40, DOI: 10.11646/phytotaxa.150.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.150.1.
PLATE 7, Figures 44–49 in New species of Cymbella and Placoneis (Bacillariophyta) from late Pleistocene Fossil, China
No full textPLATE 7, Figures 44–49: Placoneis sinensis from Myanmar. Figure 46. SEM, external valve.Published as part of Gong, Zhijun, Li, Yanling, Metzeltin, Ditmar & Lange-Bertalot, Horst, 2013, New species of Cymbella and Placoneis (Bacillariophyta) from late Pleistocene Fossil, China, pp. 29-40 in Phytotaxa 150 (1) on page 38, DOI: 10.11646/phytotaxa.150.1.2, http://zenodo.org/record/510049
PLATE 6, Figures 40–43 in New species of Cymbella and Placoneis (Bacillariophyta) from late Pleistocene Fossil, China
No full textPLATE 6, Figures 40–43: Placoneis sinensis Li & Metzeltin sp. nov. Light microscopy images showing the range of variation within the type population. Figure 40. SEM, external valve.Published as part of Gong, Zhijun, Li, Yanling, Metzeltin, Ditmar & Lange-Bertalot, Horst, 2013, New species of Cymbella and Placoneis (Bacillariophyta) from late Pleistocene Fossil, China, pp. 29-40 in Phytotaxa 150 (1) on page 37, DOI: 10.11646/phytotaxa.150.1.2, http://zenodo.org/record/510049
PLATE 2, Figures 5–8. Cymbella paenetruncata Li in New species of Cymbella and Placoneis (Bacillariophyta) from late Pleistocene Fossil, China
No full textPLATE 2, Figures 5–8. Cymbella paenetruncata Li & Gong sp. nov. Light microscopy images showing the range of variation within the type population. Scale bar represents 10 µm.Published as part of Gong, Zhijun, Li, Yanling, Metzeltin, Ditmar & Lange-Bertalot, Horst, 2013, New species of Cymbella and Placoneis (Bacillariophyta) from late Pleistocene Fossil, China, pp. 29-40 in Phytotaxa 150 (1) on page 31, DOI: 10.11646/phytotaxa.150.1.2, http://zenodo.org/record/510049
PLATE 3, Figures 9–13 in New species of Cymbella and Placoneis (Bacillariophyta) from late Pleistocene Fossil, China
No full textPLATE 3, Figures 9–13: Cymbella shii Li sp. nov. Light microscopy images showing the range of variation within the type population. Scale bar represents 10 µm.Published as part of Gong, Zhijun, Li, Yanling, Metzeltin, Ditmar & Lange-Bertalot, Horst, 2013, New species of Cymbella and Placoneis (Bacillariophyta) from late Pleistocene Fossil, China, pp. 29-40 in Phytotaxa 150 (1) on page 33, DOI: 10.11646/phytotaxa.150.1.2, http://zenodo.org/record/510049
PLATE 1, Figure 1. Cymbella pulchra Li in New species of Cymbella and Placoneis (Bacillariophyta) from late Pleistocene Fossil, China
No full textPLATE 1, Figure 1. Cymbella pulchra Li & Lange-Bertalot sp. nov. in Light microscopy Figure 2. SEM, Internal valve in view, Figure 3. Internal view of the valve end showing the distal raphe endings terminating dorsally, Figure 4. Internal view of the central area. Scale bar represents 10 µm except in Figs 3, 4 where scale bar = 2 µm and 3 µm, respectively.Published as part of Gong, Zhijun, Li, Yanling, Metzeltin, Ditmar & Lange-Bertalot, Horst, 2013, New species of Cymbella and Placoneis (Bacillariophyta) from late Pleistocene Fossil, China, pp. 29-40 in Phytotaxa 150 (1) on page 30, DOI: 10.11646/phytotaxa.150.1.2, http://zenodo.org/record/510049
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
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