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Figure 5 in Rediscovery, natural history, and conservation status of Idiocranium russeli Parker, 1936 (Amphibia: Gymnophiona: Indotyphlidae)
No full textFigure 5. Sexual size dimorphism in heads for newly collected sample of male (squares) and female (diamonds) Idiocranium russeli. (A) Fresh total length versus preserved head length; (B) fresh total length versus preserved head width.Published as part of Gower, David J., Kouete, Marcel T., Doherty-Bone, Thomas M., Ndeme, Echalle S. & Wilkinson, Mark, 2014, Rediscovery, natural history, and conservation status of Idiocranium russeli Parker, 1936 (Amphibia: Gymnophiona: Indotyphlidae), pp. 233-253 in Journal of Natural History 49 (3) on page 246, DOI: 10.1080/00222933.2014.939733, http://zenodo.org/record/400271
FIGURE 4 in The systematics of Boulengerula fischeri (Amphibia: Gymnophiona: Caeciliidae) based on morphological and molecular data
No full textFIGURE 4. Best trees from ML analysis of mt (12S, 16S, cytb, cox1) and nuclear (RAG1) DNA sequences. Third codon positions for mt protein-coding genes (cytb, cox1) excluded, and data partitioned by gene and codon position. a) with four outgroups. b) with Herpele squalostoma as a single outgroup.Published as part of Gower, David J., Papadopoulou, Anna, Doherty-Bone, Thomas M., Pupin, Fabio, Mauro, Diego San, Loader, Simon P. & Wilkinson, Mark, 2011, The systematics of Boulengerula fischeri (Amphibia: Gymnophiona: Caeciliidae) based on morphological and molecular data, pp. 14-24 in Zootaxa 2767 (1) on page 21, DOI: 10.11646/zootaxa.2767.1.2, http://zenodo.org/record/529093
Figure 3 in Rediscovery, natural history, and conservation status of Idiocranium russeli Parker, 1936 (Amphibia: Gymnophiona: Indotyphlidae)
No full textFigure 3. Photographs showing some habitats in the survey area, April 2012. (A) View approximately south from disturbed habitat on the outskirts of Kakpenyi to less disturbed forest in the nearby hills; (B) view approximately north along the Makamune valley from the northern edge of Tinta, the locality 'Tinta 4' is the recently burned patch at the centre of the picture; (C) digging fieldwork at 'Tinta 3'; (D) digging fieldwork at 'Makamune 4'.Published as part of <i>Gower, David J., Kouete, Marcel T., Doherty-Bone, Thomas M., Ndeme, Echalle S. & Wilkinson, Mark, 2014, Rediscovery, natural history, and conservation status of Idiocranium russeli Parker, 1936 (Amphibia: Gymnophiona: Indotyphlidae), pp. 233-253 in Journal of Natural History 49 (3)</i> on page 242, DOI: 10.1080/00222933.2014.939733, <a href="http://zenodo.org/record/4002711">http://zenodo.org/record/4002711</a>
Systematics and ecology of the caecilian<i>Crotaphatrema lamottei</i>(Nussbaum) (Amphibia: Gymnophiona: Scolecomorphidae)
No full textFigure 1. Map of western Cameroon showing Biafran Highlands (dashed line delimiting land>800 m above sea level) and position of Mounts Cameroon, Oku and Tchabal Mbabo.Published as part of Doherty-Bone, Thomas M., Ndifon, Roland Kebuh, Mauro, Diego San, Wilkinson, Mark, LeGrand, G. Nono & Gower, David J., 2011, Systematics and ecology of the caecilian Crotaphatrema lamottei (Nussbaum) (Amphibia: Gymnophiona: Scolecomorphidae), pp. 827-841 in Journal of Natural History 45 (13-14) on page 828, DOI: 10.1080/00222933.2010.535921, http://zenodo.org/record/520747
The tadpoles of nine Cameroonian Leptodactylodon species (Amphibia, Anura, Arthroleptidae)
No full textFIGURE 7. Dorsal (a) and lateral view (b) of Leptodactylodon erythrogaster with sketches of the mouthpart in frontal view (c) and jaw sheaths with caniniform projections (d); scale bars: 1 mm.Published as part of Mapouyat, Lissa, Hirschfeld, Mareike, Rödel, Mark-Oliver, Liedtke, H. Christoph, Loader, Simon P., Gonwouo, L. Nono, Dahmen, Matthias, Doherty-Bone, Thomas M. & Barej, Michael F., 2014, The tadpoles of nine Cameroonian Leptodactylodon species (Amphibia, Anura, Arthroleptidae), pp. 29-53 in Zootaxa 3765 (1) on page 37, DOI: 10.11646/zootaxa.3765.1.2, http://zenodo.org/record/28556
Effects of native and invasive alien decapods on freshwater biodiversity and ecosystem functioning
Get PDFInvasive alien species threaten freshwater biodiversity, with uncertain impacts on ecosystem services. Invasive alien decapods are frequent components of invaded ecosystems, and have been found to impact biodiversity, ecosystem properties and processes. Studies however often do not consider comparisons to native analogues. Native analogues could mask impacts of invasive alien species through functional redundancy. The native White Clawed Crayfish (Austropotamobius pallipes) is declining at the advance of the invasive alien American Signal Crayfish (Pacifastacus leniusculus) and the Chinese Mitten Crab (Eriocheir sinensis). Consequences of this changeover of decapod species to the patterns and processes of river basins are not well understood.
Laboratory microcosm experiments found invasive alien decapods processed native leaf litter at a greater rate than native crayfish, increasing smaller fragments, notably fine particulate organic matter and dissolved organic carbon (Chapter 2). However, these differences in transformation of leaf litter into other products did not increase the productivity of algal biofilms. Each decapod species excreted nutrients at different rates: A. pallipes and E. sinensis had similar nitrogen excretion, while P. leniusculus excreted much less nitrogen suggesting this species could be a nutrient sink. These differences in nutrients were apparently absorbed by biofilms growing on leaf and rock surfaces even though they did not grow as a result.
Chapter 3 found the greater detritivory performance of invasive alien decapods was observed for other species of leaf litter, including increased breakdown of particularly troublesome invasive alien riparian plant Rhododendron ponticum. Derived products varied, with more fine particulate organic matter generated for Acer pseudoplatanus and R. ponticum, suggesting less assimilation of these litter types. This revealed a previously unknown feedback between invasive plants and detritivores, whereby the litter accumulations from riparian invasive plants is potentially consumed by invasive alien decapods. This in turn may subsidise the growth and reproduction of invasive alien aquatic decapods.
Outdoor pond mesocosm experiments revealed that invasive alien decapods altered taxonomic richness, diversity, and structure, with snails particularly found to decline in ponds (Chapter 4). Primary productivity of periphyton was elevated in P. leniusculus ponds compared to natives, but not in the E. sinensis ponds, explained by a combination of trophic cascade and turbidity. Leaf litter decomposition rates, community respiration, gross and net primary productivity were otherwise unaffected. Outdoor flume mesocosms were utilised to replicate headwater streams to measure bioturbation of decapods, and associated changes to biodiversity, water quality and ecosystem processes (Chapter 5). Effects on sediment topology and transport were similar for controls, native and alien species, with the presence of refuges likely causing this lack of effect. Suspended organic matter was similar for all species, but sediment respiration was higher for P. leniusculus. Invertebrate community structure was significantly different for invasive alien decapods, with significantly higher densities of collector-gathering invertebrates such as Baetis sp. and Culicoides.
The the lack of consensus between the laboratory (Chapters 2-3) and mesocosm studies (Chapters 4-5) lead to the conclusion that environmental practitioners should consider context and scaling when interpreting experimental results of biological invasions. The overall findings of this study however do show that P. leniusculus and E. sinensis are not functionally redundant for several ecosystem attributes compared to A. pallipes. These differences in species functional-traits are likely to be exacerbated by greater densities of invasives observed in situ. This supports the potential for invasive alien decapods to alter the ecosystem services of entire river basins, even when a native analogue was previously present
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
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