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No full textFigure 3 in A widespread Ponto-Caspian invader with a mistaken identity: integrative taxonomy elucidates the confusing taxonomy of Trichogammarus trichiatus (= Echinogammarus) (Crustacea: Amphipoda)
No full textFigure 3. Mitochondrial (COI and 16S) time-calibrated tree and species delimitation results. Numbers at nodes are posterior probabilities (not shown if <0.7). Turquoise bars indicate 95% confidence intervals for node ages (shown only for supported nodes). Bars on the right depict the results of the species delimitation analyses (abbreviations: Morpho, morphology; BIN, Barcode Index number; GMYC, General Mixed Yule Coalescent; PTP, Poisson Tree Processes; ASAP, Assemble Species by Automatic Partitioning; PDT, Patristic Distance Threshold). Red stars indicate the clades of Chaetogammarus ischnus and Chaetogammarus trichiatus that were used in the multilocus Bayes factors species delimitation approach.Published as part of Copilaș-Ciocianu, Denis, Palatov, Dmitry, Rewicz, Tomasz, Sands, Arthur F., Arbačiauskas, Kęstutis, Haaren, Ton Van, Hebert, Paul D. N., Grabowski, Michał & Marin, Ivan, 2023, A widespread Ponto-Caspian invader with a mistaken identity: integrative taxonomy elucidates the confusing taxonomy of Trichogammarus trichiatus (= Echinogammarus) (Crustacea: Amphipoda), pp. 821-846 in Zoological Journal of the Linnean Society 198 on page 829, DOI: 10.1093/zoolinnean/zlad010, http://zenodo.org/record/815244
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
Filogeografia inwazyjnego obunoga Dikerogammarus villosus w Europie
No full textThe killer shrimp, Dikerogammarus villosus (Crustacea Amphipoda), has been recognised as one of the 100 worst alien species in Europe, representing a major issue for local biodiversity and ecosystem functioning. During the last 20 years, it has ccolonized Central and Western Europe via the central and southern invasion corridors. Its spread was associated mainly with commercial shipping in large waterways but it was also transported overland to several Alpine lakes and even overseas to the British Isles. This thesis is an attempt to track the routes and dynamics of invasion of this one of the most effective freshwater invader. Molecular methods were used to reveal phylogeography of D. villosus in the native and invaded area as well as to tackle conservation issues. Through molecular studies we aimed to understand the dynamics of the species invasion in Europe. Our material consisted of about 606 individuals from its entire European range, sequenced for 16S and COI mitochondrial markers and 1228 individuals sequenced for seven microsatellite loci each. In result, four major populations in Danube, Dnieper, Dniester mouth and also Durngol Liman in Turkey were identified in the species native area. Two of them, from Dnieper and Danube mouth, were donors for independent routes of invasion along central and southern corridor. Microsatellite data allow to indicate Western Europe populations as a origin of latest introduction of Dikerogammarus villosus to UK. Strong bottleneck effects may be seen in the populations from the isolated Alpine Lakes, showing that they come from a very low number of introduced individuals (showing high risk of overland transport). Such complex knowledge on the phylogeography of the killer shrimp may help to decrease risk of its future introductions to other areas, such as the North American Great Lakes and Balkan lakes.Inwazyjny obunóg Dikerogammarus villosus (Crustacea Amphipoda), został uznany za jednego z 100 najbardziej ekspansywnych obcych gatunków w Europie i stanowi poważne zagrożenie dla lokalnej różnorodności biologicznej i funkcjonowania ekosystemów. W ciągu ostatnich 20 lat, gatunek ten skolonizował znaczny obszar Europy Środkowej i Zachodniej poprzez centralny i południowych korytarz inwazji Ponto-Kaspijskich hydrobiontów. Jego rozprzestrzenianie się jest związane z transportem śródlądowym dużymi drogami wodnymi, ale również został przypadkowo wsiedlony do izolowanych jezior alpejskich, a nawet na Wyspy Brytyjskie. W niniejszej pracy podejmuję próbę prześledzenia trasy i dynamiki inwazji, oraz zidentyfikowania populacji źródłowych, dla tego jednego z najbardziej skutecznych słodkowodnych gatunków inwazyjnych. Metody molekularne zostały wykorzystane do prześledzenia filogeografii D. villosus w rodzimym i nowo skolonizowanym obszarze Europy. Przeanalizowany materiał składał się z 606 osobników z 45 populacji z całej Europy, zsekwencjonowanych dla markerów mitochondrialnych 16S i i COI, oraz 1228 osobników zsekwencjonowanych dla każdego z siedmiu loci mikrosatelitarnych. Udało się ustalić cztery odmiennie genetycznie populacje w rejonie rodzimym w deltach Dunaju, Dniepru, Dniestru, a także w jeziorze Durngol w Turcji. Dwie z nich, w Dunaju i Dnieprze, były źródłami dla niezależnych dróg inwazji wzdłuż centralnego i południowego korytarza. Dane mikrosatelitarne pozwalają wskazać południowy korytarz inwazji w Europie Zachodniej jako źródło wprowadzenia Dikerogammarus villosus do Wielkiej Brytanii. Silne efekty założyciela i zubożenie puli genetycznej są wyraźnie widoczne w populacjach z izolowanym jezior alpejskich, co wskazuje na bardzo nieliczne populacje założycielskie.This study was supported by the Polish Ministry of Science and Higher Education
and National Science Centre (projects no. N N304 350139 and
2011/03/D/NZ8/03012) and partially by the internal funds of the University of Lodz.
Part of the work was done during scientific internship in Equipe Ecologie Evolutive,
Biogeosciences, Universite de Bourgogne, France founded by the ERASMUS
student exchange program and aforementioned projects
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe 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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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