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In situ conservation of forest genetic resources at the locality „Duboka” in the National Park „Kopaonik” – Serbia
Get PDFIn situ conservation in Serbia is mainly presented in protected areas, such as national parks.
National Park „Kopaonik” is one of five national parks in Serbia, which covers a total area of
11,969.04 ha, including 13 localities with a protection regime of the first degree. Forest genetic
resources in the National Park „Kopaonik“ are affected by various biotic and abiotic threats
which lead to their genetic erosion. This research aimed to identify rare, endangered, relict,
endemic, and vulnerable forest trees at the locality „Duboka”, to assess their degree of
endangerment and propose conservation measures. The locality „Duboka” covers an area of
144.03 ha, at an altitude of between 1020 and 1780 m. By terrain reconnaissance, a total of 18
forest tree species, and 27 species in the shrub layer were identified, which indicates a
significant biodiversity of this locality. Nine forest tree species belong to the categories of rare
(rowan and wych elm), rare-endangered (silver birch), relict (European hop-hornbeam),
endemic (Balkan maple), and vulnerable species (aspen, wild cherry, wild pear, and whitebeam)
in Serbia. Among those species, it is very important to conserve the available gene pool of
European hop-hornbeam (Ostrya carpinifolia Scop.), which is a very rare, relict species that
occurs only in the locality „Duboka” in the entire area of Kopaonik, and the Balkan maple (Acer
heldreichii Orph. ex Boiss.), an endemic species whose range is drastically decreasing on the
entire Balkan peninsula. The measures of conservation and monitoring of individual genotypes
or groups of trees have been defined, and an assessment of the variability of gene pool using
genetic markers was proposed. In situ conservation units will include sites where all nine rare,
endangered, relict, endemic, and vulnerable forest tree species were selected and
georeferenced. The implementation of the proposed measures is expected in the following
period
Conservation of forest genetic resources at the locality „Jelak ” in the National Park „Kopaonik" - Serbia
Get PDFThe main long-term goal of conservation and sustainable development of National
Park (NP) „Kopaonik” is to conserve and improve the natural values, including forest
genetic resources. It is located in central Serbia, covering an area of 11,969.04 ha.
One of the 13 localities with the first protection regime is „Jelak” (60.39 ha, 1000-1490
m a.s.l.). This research aimed to identify rare, endangered, relict, endemic, or species
„at-risk” at the locality „Jelak”, as a basis for proposing a program for its conservation.
Its main value is a presence of a mixed forest of yew and fir. By terrain reconnaissance,
a total of 13 forest tree species were recorded, among which Ulmus glabra (rare),
Betula pendula (rare/endangered), Populus tremula („at-risk“), and Taxus baccata
(relict), which indicates a significant diversity. In addition, 14 species were recorded in
the shrub layer, among which Acer heldreichii (endemic) and Acer platanoides (rare/
endangered). English yew (Taxus baccata L.) is a very rare species that occurs only in
the locality „Jelak” in the entire area of NP „Kopaonik”. This species is under varying
degrees of nature conservation in different European countries, and it is categorized
on the European Red List Category and Criteria („least concerning”). Since it is considered a tertiary relict in the forest fund of Serbia, it is important to conserve the available gene pool. Based on the results, measures of in situ conservation and monitoring
of the Taxus baccata population and all identified rare and endangered species at the
locality „Jelak” have been defined
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
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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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