1,720,977 research outputs found
Interference Competition between Wild and Domestic Ungulates at Watering Sites of Gobi Desert, Mongolia
No full textDesertification processes in Central Asia are largely dependent on soil degradation induced by excessive livestock grazing, besides climate changes. Desertification represents a threat to wildlife species living in arid environments, since reduced accessibility to water strongly affects their distribution and behavior. Moreover, livestock presence exacerbates competition with wildlife for scarce water resources. Given their crucial importance to wildlife persistence, water sources in arid environments are critical to the study of wildlife behavior and interspecific competition. The Small Gobi A is one such environment of Mongolia, characterized by high grazing pressure despite low human presence. Between September and October 2017, we conducted camera trapping surveys at two waterholes identified as potential drinking sources for wildlife. We aimed to explore the spatio-temporal interactions among large domestic ungulates (e.g., Bactrian camel Camelus bactrianus), and wild ungulates (e.g., Asian wild ass Equus hemionus, and goitered gazelle Gazella subgutturosa), which are among the most iconic and threatened ungulates of Mongolia. The results showed a complete spatial segregation between domestic and wild ungulates, and a high temporal segregation among wild ungulates. This study confirms spatial and temporal niche partitioning as a strategy adopted by wild species to reduce competition and allow species coexistence. We recommend enhanced management measures of free-roaming livestock to reduce the pressure on wild species at drinking sites
Allactaga bullata Allen 1925
No full textAllactaga bullata Allen, 1925 Records. One individual was recorded in May 13, 2017 in the live trapping site LSH16 (43°11.039′ N, 105°45.276′ E – time 9:40 pm); Figure 5K. Identification. We based the identification on morphometric and qualitative characters. A white stripe on the tail differentiates this species from other jerboas as well the morphology of hind limbs and the length of the ears (Smith et al. 2010, Batsaikhan 2014).Published as part of Augugliaro, Claudio, Paniccia, Chiara, Janchivlamdan, Choikhand, Monti, Ibra E., Boldbaatar, Turmunkh & Munkhtsog, Bariusha, 2019, Mammal inventory in the Mongolian Gobi, with the southeasternmost documented record of the Snow Leopard, Panthera uncia (Schreber, 1775), in the country, pp. 565-578 in Check List 15 (4) on pages 570-572, DOI: 10.15560/15.4.56
Vulpes vulpes vulpes (Linnaeus 1758
No full textVulpes vulpes (Linnaeus, 1758) Records. First record was in May 19, 2017 (42°57.241′ N, 105°37.608′ E – camera trap SGCI4 – time 1:52 am), and subsequently in the monitoring sites (SGHI2, SGCI2, SGCI5, SGAPA03, SGAPA06, SGAPA13, SGAPA21, SGAPA23, SGAPA5, SGAPA9, OS2; for details see Table 4); Figure 5I. Identification. It can be distinguished by Vulpes corsac by its long, bushy, white-tipped tail, black-backed ears, and longer, darker legs (Batsaikhan 2014).Published as part of Augugliaro, Claudio, Paniccia, Chiara, Janchivlamdan, Choikhand, Monti, Ibra E., Boldbaatar, Turmunkh & Munkhtsog, Bariusha, 2019, Mammal inventory in the Mongolian Gobi, with the southeasternmost documented record of the Snow Leopard, Panthera uncia (Schreber, 1775), in the country, pp. 565-578 in Check List 15 (4) on page 576, DOI: 10.15560/15.4.56
Ovis ammon Linnaeus 1758
No full textOvis ammon Linnaeus, 1758 Records. First record was in August 14, 2017 (43°25.311′ N, 106°11.725′ E – camera trap SGHI2 – 5:04 pm), and subsequently in the monitoring sites (SGAPA03, SGAPA06, SGAPA11, SGAPA14, OS2, OS1; see Table 4 for the coordinates); Figure 4D. Identification. It is the only wild sheep species in the area and there are no similar species (Batsaikhan 2014).Published as part of Augugliaro, Claudio, Paniccia, Chiara, Janchivlamdan, Choikhand, Monti, Ibra E., Boldbaatar, Turmunkh & Munkhtsog, Bariusha, 2019, Mammal inventory in the Mongolian Gobi, with the southeasternmost documented record of the Snow Leopard, Panthera uncia (Schreber, 1775), in the country, pp. 565-578 in Check List 15 (4) on page 575, DOI: 10.15560/15.4.56
Phodopus roborovskii
No full text<i>Phodopus roborovskii</i> (Satunin, 1903) <p> <b>Records.</b> First record was in August 12, 2017 in the live trapping site SHC5 (43°11.092′ N, 105°45.329′ E – 09:00 am), and subsequently in the monitoring site LSH6 (Table 4); Figure 6O.</p> <p> <b>Identification.</b> We based the identification on morphometric and qualitative characters. It is smaller than Campbell’s Hamster (<i>Phodopus campbelli</i> (Thomas, 1905)) and does not have the stripe on the back. The feet are covered with white hairs. It has a relatively long and sharp snout (Batsaikhan 2014).</p>Published as part of <i>Augugliaro, Claudio, Paniccia, Chiara, Janchivlamdan, Choikhand, Monti, Ibra E., Boldbaatar, Turmunkh & Munkhtsog, Bariusha, 2019, Mammal inventory in the Mongolian Gobi, with the southeasternmost documented record of the Snow Leopard, Panthera uncia (Schreber, 1775), in the country, pp. 565-578 in Check List 15 (4)</i> on page 575, DOI: 10.15560/15.4.56
Meriones meridianus
No full textMeriones meridianus (Pallas, 1773) Records. First specimen was captured by live trapping in May 14, 2017 (43°11.039′N, 105°45.276′ E – site LSH16 – time 8:00 am), and subsequently in SHC5, LSH6 (Table 4); Figure 6N. Identification. We based the identification on morphometric and qualitative characters. The tail is relatively longer than the head and body. It differs from Meriones unguiculatus in having a less-developed tuft of the tail; the tuft is sometimes absent. The dorsal part of the tail is yellowish brown and its ventral part is light yellow. The sole of the hind feet is covered with hairs. The claws are white with a reddish upper part. The underbelly is white (Darvish 2009, Smith et al. 2010).Published as part of Augugliaro, Claudio, Paniccia, Chiara, Janchivlamdan, Choikhand, Monti, Ibra E., Boldbaatar, Turmunkh & Munkhtsog, Bariusha, 2019, Mammal inventory in the Mongolian Gobi, with the southeasternmost documented record of the Snow Leopard, Panthera uncia (Schreber, 1775), in the country, pp. 565-578 in Check List 15 (4) on page 575, DOI: 10.15560/15.4.56
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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