1,720,974 research outputs found
Figure 3 in Cloudy with a chance of speciation: integrative taxonomy reveals extraordinary divergence within a Mesoamerican cloud forest bird
No full textFigure 3. Scatterplot of hue and colour saturation (chroma) for the five Aphelocoma unicolor subspecies.Published as part of Venkatraman, Madhvi X., Deraad, Devon A., Tsai, Whitney L. E., Zarza, Eugenia, Zellmer, Amanda J., Maley, James M. & Mccormack, John E., 2019, Cloudy with a chance of speciation: integrative taxonomy reveals extraordinary divergence within a Mesoamerican cloud forest bird, pp. 1-15 in Biological Journal of the Linnean Society 126 on page 7, DOI: 10.1093/biolinnean/bly156, http://zenodo.org/record/784888
Figure 5 in Cloudy with a chance of speciation: integrative taxonomy reveals extraordinary divergence within a Mesoamerican cloud forest bird
No full textFigure 5. Phylogenies of Aphelocoma unicolor based on mitochondrial DNA and ultraconserved elements (UCEs). For the Bayesian time-calibrated mitochondrial DNA phylogeny generated in BEAST, the mean estimated split dates are provided on the nodes, with the 95% highest probability density shown below in square brackets. For both phylogenies, nodes with perfect support are shown with black dots.Published as part of Venkatraman, Madhvi X., Deraad, Devon A., Tsai, Whitney L. E., Zarza, Eugenia, Zellmer, Amanda J., Maley, James M. & Mccormack, John E., 2019, Cloudy with a chance of speciation: integrative taxonomy reveals extraordinary divergence within a Mesoamerican cloud forest bird, pp. 1-15 in Biological Journal of the Linnean Society 126 on page 9, DOI: 10.1093/biolinnean/bly156, http://zenodo.org/record/784888
Figure 6 in Cloudy with a chance of speciation: integrative taxonomy reveals extraordinary divergence within a Mesoamerican cloud forest bird
No full textFigure 6. Results of tests for strong niche divergence on multivariate niche axis in relationship to the phylogeny. Boxes show whether each niche axis was more divergent than background divergence (diverged), more similar than background divergence (conserved), or was similar to background divergence and therefore failed to reject the null hypothesis (null). Percentages indicate the amount of variation explained by that axis.Published as part of Venkatraman, Madhvi X., Deraad, Devon A., Tsai, Whitney L. E., Zarza, Eugenia, Zellmer, Amanda J., Maley, James M. & Mccormack, John E., 2019, Cloudy with a chance of speciation: integrative taxonomy reveals extraordinary divergence within a Mesoamerican cloud forest bird, pp. 1-15 in Biological Journal of the Linnean Society 126 on page 10, DOI: 10.1093/biolinnean/bly156, http://zenodo.org/record/784888
Aphelocoma Cabanis 1851
No full text<i>APHELOCOMA OAXACAE</i> PITELKA, 1946 <p> <i>Type. Adult female, MLZ:</i> Bird:39121, collected by M. del Toro Avilés from Moctum, Oaxaca, Mexico on 18 October 1941. This species is smaller and is restricted to the state of Oaxaca, Mexico (Pitelka, 1946).</p>Published as part of <i>Venkatraman, Madhvi X., Deraad, Devon A., Tsai, Whitney L. E., Zarza, Eugenia, Zellmer, Amanda J., Maley, James M. & Mccormack, John E., 2019, Cloudy with a chance of speciation: integrative taxonomy reveals extraordinary divergence within a Mesoamerican cloud forest bird, pp. 1-15 in Biological Journal of the Linnean Society 126</i> on page 12, DOI: 10.1093/biolinnean/bly156, <a href="http://zenodo.org/record/7848889">http://zenodo.org/record/7848889</a>
Aphelocoma Cabanis 1851
No full text<i>APHELOCOMA GUERRERENSIS</i> NELSON, 1903 <p> <i>Type. Adult male, USNM:</i> Bird:185539 collected by E. W. Nelson and E. A. Goldman from Omiltemi, Guerrero on 19 May 1903. This species is a saturated, purplish blue and has a very long tail and large bill. It is endemic to the cloud forests of Guerrero, Mexico (Pitelka, 1946).</p>Published as part of <i>Venkatraman, Madhvi X., Deraad, Devon A., Tsai, Whitney L. E., Zarza, Eugenia, Zellmer, Amanda J., Maley, James M. & Mccormack, John E., 2019, Cloudy with a chance of speciation: integrative taxonomy reveals extraordinary divergence within a Mesoamerican cloud forest bird, pp. 1-15 in Biological Journal of the Linnean Society 126</i> on page 12, DOI: 10.1093/biolinnean/bly156, <a href="http://zenodo.org/record/7848889">http://zenodo.org/record/7848889</a>
Figure 4 in Cloudy with a chance of speciation: integrative taxonomy reveals extraordinary divergence within a Mesoamerican cloud forest bird
No full textFigure 4. Results of a discriminant function (DF) analysis and normal mixture models on all morphological and plumage traits. A, differences among all five Aphelocoma unicolor subspecies in the first two DF axes. B, differences between only the A. u. unicolor and A. u. griscomi subspecies in the third and fourth DF axes. C, D, results of normal mixture modelling to determine the objective number of phenotypic clusters among individuals west (C) and east (D) of the Isthmus of Tehuantepec, with inset showing the assignment of individuals to each cluster with respect to their a priori subspecies assignment.Published as part of Venkatraman, Madhvi X., Deraad, Devon A., Tsai, Whitney L. E., Zarza, Eugenia, Zellmer, Amanda J., Maley, James M. & Mccormack, John E., 2019, Cloudy with a chance of speciation: integrative taxonomy reveals extraordinary divergence within a Mesoamerican cloud forest bird, pp. 1-15 in Biological Journal of the Linnean Society 126 on page 8, DOI: 10.1093/biolinnean/bly156, http://zenodo.org/record/784888
Aphelocoma Cabanis 1851
No full text<i>APHELOCOMA CONCOLOR</i> CASSIN, 1848 <p> <i>Type. An unsexed specimen, ANSP:</i> Bird:3039 labelled S. America, later determined probably to have originated near Xalapa, Veracruz (Phillips, 1986). This species is brighter blue than <i>A. u. oaxacae</i> and <i>A. u. guerrerensis</i> and has a larger wing and tail than <i>A. u. oaxacae</i>. It is found in cloud forests from Hidalgo south to Veracruz, Mexico (Pitelka 1946).</p>Published as part of <i>Venkatraman, Madhvi X., Deraad, Devon A., Tsai, Whitney L. E., Zarza, Eugenia, Zellmer, Amanda J., Maley, James M. & Mccormack, John E., 2019, Cloudy with a chance of speciation: integrative taxonomy reveals extraordinary divergence within a Mesoamerican cloud forest bird, pp. 1-15 in Biological Journal of the Linnean Society 126</i> on page 12, DOI: 10.1093/biolinnean/bly156, <a href="http://zenodo.org/record/7848889">http://zenodo.org/record/7848889</a>
Aphelocoma unicolor Du Bus 1847
No full text<i>APHELOCOMA UNICOLOR</i> DU BUS, 1847 <p> <i>Type.</i> An unsexed specimen in the Brussels Museum labelled from Tabasco; however, this species does not occur in the state of Tabasco (van Rossem, 1942). The type locality was later designated as Ciudad de las Casas, Chiapas (Brodkorb, 1944). The nominate subspecies, <i>A. u. unicolor</i>, occurs in the highlands of Chiapas, Mexico and Guatemala. The larger-billed and generally more purplish <i>A. u. griscomi</i> is found in the highlands of Honduras, El Salvador, and northern Nicaragua (Pitelka, 1946).</p>Published as part of <i>Venkatraman, Madhvi X., Deraad, Devon A., Tsai, Whitney L. E., Zarza, Eugenia, Zellmer, Amanda J., Maley, James M. & Mccormack, John E., 2019, Cloudy with a chance of speciation: integrative taxonomy reveals extraordinary divergence within a Mesoamerican cloud forest bird, pp. 1-15 in Biological Journal of the Linnean Society 126</i> on page 12, DOI: 10.1093/biolinnean/bly156, <a href="http://zenodo.org/record/7848889">http://zenodo.org/record/7848889</a>
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
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