1,721,074 research outputs found
Discovery of substantial Oxalis (Oxalidaceae) diversity and endemism in an arid biodiversity hotspot
No full textOberlander, Kenneth C., Roets, Francois, Dreyer, Ne. L. (2014): Discovery of substantial Oxalis (Oxalidaceae) diversity and endemism in an arid biodiversity hotspot. Phytotaxa 181 (2): 79-95, DOI: 10.11646/phytotaxa.181.2.2, URL: http://dx.doi.org/10.11646/phytotaxa.181.2.
FIGURE 4 in Two new Oxalis (Oxalidaceae) species from the Richtersveld National Park, South Africa
No full textFIGURE 4. Oxalis rosettifolia. Habit, drawn from living plants at type locality. Scale Bar = 1 cm.Published as part of Dreyer, Léanne L., Roets, Francois & Oberlander, Kenneth C., 2013, Two new Oxalis (Oxalidaceae) species from the Richtersveld National Park, South Africa, pp. 53-63 in Phytotaxa 89 (2) on page 61, DOI: 10.11646/phytotaxa.89.2.2, http://zenodo.org/record/507196
FIGURE 3 in Two new Oxalis (Oxalidaceae) species from the Richtersveld National Park, South Africa
No full textFIGURE 3. Oxalis nivea. Habit, drawn from living plants at type locality. Scale Bar = 1 cm.Published as part of Dreyer, Léanne L., Roets, Francois & Oberlander, Kenneth C., 2013, Two new Oxalis (Oxalidaceae) species from the Richtersveld National Park, South Africa, pp. 53-63 in Phytotaxa 89 (2) on page 60, DOI: 10.11646/phytotaxa.89.2.2, http://zenodo.org/record/507196
FIGURE 2. a in Two new Oxalis (Oxalidaceae) species from the Richtersveld National Park, South Africa
No full textFIGURE 2. a. Desert vegetation at Kokerboomkloof Campsite in the Richtersveld National Park; b–d. Oxalis nivea; b. Habitus; c. Flowers; d. Bulb; e–h. O. rosettifolia; e. Habitus; f. Flowers (cream-coloured form); g. Flowers (side view of yellow-coloured form); h. Bulb. Scale bars = 50 mmPublished as part of Dreyer, Léanne L., Roets, Francois & Oberlander, Kenneth C., 2013, Two new Oxalis (Oxalidaceae) species from the Richtersveld National Park, South Africa, pp. 53-63 in Phytotaxa 89 (2) on page 59, DOI: 10.11646/phytotaxa.89.2.2, http://zenodo.org/record/507196
FIGURE 1. Bayesian analyses 50 in Two new Oxalis (Oxalidaceae) species from the Richtersveld National Park, South Africa
No full textFIGURE 1. Bayesian analyses 50% majority-rule consensus trees. Parsimony bootstrap support values> 70 % are shown above branches, Bayesian posterior probability values> 0.95 are shown below the branches. The O. pes-caprae clade is indicated. The two new species are indicated in bold. Bars below trees indicate expected number of substitutions per site. A) tree based on ITS data. B) tree based on trnSG data.Published as part of Dreyer, Léanne L., Roets, Francois & Oberlander, Kenneth C., 2013, Two new Oxalis (Oxalidaceae) species from the Richtersveld National Park, South Africa, pp. 53-63 in Phytotaxa 89 (2) on page 57, DOI: 10.11646/phytotaxa.89.2.2, http://zenodo.org/record/507196
FIGURE 3 in Discovery of substantial Oxalis (Oxalidaceae) diversity and endemism in an arid biodiversity hotspot
No full textFIGURE 3. New species photos. Numbers correspond to those in the text. B1) Oxalis rosettifolia. B2) Oxalis nivea. B3) Oxalis sp. nov. 1. B4) Oxalis rubricallosa. B5) Oxalis petricola. B6) Oxalis sp. nov. 2. B7) Oxalis sp. nov. 3 'canaliculata'. B8) Oxalis sp. nov. 4. B9) Oxalis sp. nov. 5 'magnifolia'. B10) Oxalis sp. nov. 6.Published as part of Oberlander, Kenneth C., Roets, Francois & Dreyer, Ne. L., 2014, Discovery of substantial Oxalis (Oxalidaceae) diversity and endemism in an arid biodiversity hotspot, pp. 79-95 in Phytotaxa 181 (2) on page 91, DOI: 10.11646/phytotaxa.181.2.2, http://zenodo.org/record/514588
FIGURE 1 in Discovery of substantial Oxalis (Oxalidaceae) diversity and endemism in an arid biodiversity hotspot
No full textFIGURE 1. Map of localities for new Richtersveld Oxalis taxa. The thick black line indicates both the Orange River and the border between South Africa and Namibia. The thin black line is the coastline. Darker shading indicates higher elevation. Contour intervals are 150 m.Published as part of Oberlander, Kenneth C., Roets, Francois & Dreyer, Ne. L., 2014, Discovery of substantial Oxalis (Oxalidaceae) diversity and endemism in an arid biodiversity hotspot, pp. 79-95 in Phytotaxa 181 (2) on page 82, DOI: 10.11646/phytotaxa.181.2.2, http://zenodo.org/record/514588
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
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