1,721,126 research outputs found
Short-term in situ warming influences early development of sessile assemblages
Full text linkIncreased temperature is arguably the most important facet of global climate change, as temperature influences processes across all biological scales. In terrestrial systems, the influence of warming on community dynamics has been investigated through field manipulations of temperature but, in contrast, there have been very few warming experiments conducted in the sea. Here, we used heated settlement panels to manipulate microhabitat temperature in situ for >3 wk, to examine how short-term warming affects community development. We conducted 2 independent experiments in contrasting subtidal habitats in the Perth (Australia) metropolitan area, to determine the usefulness of the field-based approach and to examine consistencies in community-level response to warming. In the first experiment (Swan River estuary), a ~2°C warming treatment resulted in a lower space coverage of a tube-building amphipod and higher coverage of a solitary ascidian, Ciona intestinalis, which contributed to significant differences in community structure. In a second experiment (Hillarys Harbour), the bryozoan Watersipora subtorquata, spirorbid polychaete worms, and C. intestinalis covered less space on warmed surfaces than controls. This was associated with greater biomass of a colonial ascidian and widespread marine pest, Didemnum perlucidum, under warmer conditions, which overgrew and probably outcompeted other taxa. Our results show that community responses to short-term warming are variable and are influenced by individual responses of assemblage dominants. We discuss limitations of the study and highlight the importance of community-level, field-based manipulations of environmental change factors which examine interactions between all available members of the local species pool
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
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
Author Correction: The value of ecosystem services in global marine kelp forests (Nature Communications, (2023), 14, 1, (1894), 10.1038/s41467-023-37385-0)
No full text\ua9 2023, The Author(s).Correction to: Nature Communications, published online 18 April 2023 The original version of this article omitted a reference to previous work in ‘Eger et al. 2022 - Eger, A. M, Bennett, S., Zimmerhackel, J., Rogers, A., Burton, M., Filbee-Dexter, K., Wernberg, T., Gacutan, J., Milligan, B., Verg\ue9s, A. (2022) Quantifying the ecosystem services of the Great Southern Reef. Report to the National Environmental Science Program. University of New South Wales. Available at: ’and ‘Zimmerhackel et al. 2023 - Zimmerhackel, J. S., Pineiro-Corbeira, C., Norderhaug, K. M., Filbee-Dexter, K., & Wernberg, T. (2023) Dependency of commercial fisheries on kelp forests for valuation of ecosystem services. Working Paper 2302, Agricultural and Resource Economics, The University of Western Australia, Crawley, Australia. ’. These have been added as references 110, 111 at: ‘We accounted for this fact by creating dependency classes for 187 genera of fish and invertebrates, adapted from refs. 110,111’. These references have been added to the reference list. The original version of this article contained an error in the “Acknowledgements”, which incorrectly omitted the following: ‘A.E., A.V., D.S., and P.M. would also like to acknowledge our continued collaboration with the GEAK network and our valued discussions on how to value ecosystem services in kelp forests. In particular, we thank Johanna Zimmerhackel, Cristina Pineiro-Corbeira, Kjell-Magnus Norderhaug, Karen Filbee-Dexter, and Thomas Wernberg for their thinking and work on fisheries dependencies in kelp forest ecosystems.’ This has been corrected in both the PDF and HTML versions of the article
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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