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Avifaunistics Genetic Heat Index (GHI) of Four Landscapes in West Pasaman Regency, West Sumatra, Indonesia
No full textWest Pasaman Regency in West Sumatra Province is recently established as an administrative area on 2003, segregated from Pasaman Regency where it was previously affiliated. This regency has been planning to support its structural developments using its main income generated from agricultural sector, which involve vast plantation area for oil-palm and other agricultural products. With the variety of its topography spans from some offshore islands up to 2,912 m mountain area, it is interesting to understand the importance value of this area from the perspective of one of its natural biodiversity: avifuna. Here in this paper, we use Genetic Heat Index (GHI) concept based on avian diversity and their conservation status to compare the significance value among four prominent landscapes in this regency, which include Mount Talamau and Laut Tinggal Lake (mountainous area), Tongar River (lowland-to-hilly riparian agricultural area) and Panjang Island (an offshore island). Despite the difference and similarity of bird species recorded in each site, Panjang Island has comparable GHI value with Tongar River, Mount Talamau and Laut Tinggal Lake (consecutively 4.20, 4.03, 4.14, 4.26). This result implies to the uniqueness of bird species living in each site along with its habitat typicality which also helps in contributing to their GHI value. Therefore, giving attention to this GHI concept while accommodate it into development plan will help in supporting more environmentally-sound development process
Sumatran Pygmy Wren-babbler Pnoepyga pusilla lepida performing broken-wing distraction display near nest
Full text linkINVENTORY OF DRAGONFLIES AND DAMSELFLIES (ODONATA) IN ANDALAS UNIVERSITY’S LIMAU MANIS CAMPUS COMPLEX, PADANG: USING PHOTOGRAPHICAL APPROACH
Full text linkOdonata, which consists of true dragonflies and damselflies, is considerably understudied in Sumatra, especially in West Sumatra region. While the campus area of Andalas University in Limau Manis provides many suitable habitats for dragonflies and damselflies, the least has been done in learning these organisms. In this paper, we intend to conduct the inventory of Odonata in Limau Manis area by using photography approach (by taking decent pictures only, without sampling the animal). After spending 14 days of data collection which spanned from October 2017 until February 2018), we listed 27 Odonata species. Of which, 11 species belong to four families under suborder Zygoptera and 16 species grouped into four families under suborder Anisoptera. Libellulidae is a family under Anisoptera that was found with most species members. Photography approach promises an immense help in doing species inventory for this animal group for its reliability in determining species identification without harming species’ population.
Keywords: damselflies, dragonflies, Libellulidae, Limau Manis area, photography approac
INVENTARISASI CAPUNG (ODONATA) YANG BERKUNJUNG KE PERUMAHAN DI KOTA BENGKULU, SUMATERA
Full text linkCapung (Odonata) merupakan serangga karnivora yang secara global mencapai sekitar 7000 jenis. Penelitian capung selama ini lebih banyak dilakukan pada habitat alami, dengan sedikit perhatian diberikan pada habitat yang sudah mengalami degradasi. Penelitian ini bertujuan untuk menginventarisasi jenis capung yang berkunjung ke perumahan di daerah Kota Bengkulu. Penelitian ini mengobservasi capung dewasa yang masuk ke dalam perumahan di Bentiring, Kota Bengkulu dalam periode 2020-2023. Sebagai hasil, tercatat total 43 individu yang memasuki perumahan selama pengamatan yang kemudian diidentifikasi menjadi 10 jenis, 8 genera, 3 famili dari dua subordo Odonata. Subordo Zygoptera diwakili oleh Agriocnemis femina (Coenagrionidae), sedangkan dari subordo Anisoptera tercatat Anacaeschna jaspidea, Gynacantha bayadera, G. dohrni, dan G. subinterrupta (Aeshnidae) serta Orthetrum sabina, Pantala flavescens, Potamarcha congener, Tholymis tillarga, dan Zyxomma petiolatum (Libellulidae). Periode Januari, Februari dan Oktober merupakan waktu terbanyak individu Odonata tercatat memasuki rumah, dimana 87% insiden tercatat pada waktu malam hari dan 13% di sore hari. Gynacantha bayadera, G. dohrni, Orthetrum sabina dan Zyxomma petiolatum merupakan jenis dengan jumlah individu signifikan teramati. Kata kunci: Aeshnidae, Gynacantha bayadera, G. dohrni, Libellulidae, Orthetrum sabin
First Provincial Record of Black-crowned Night heron (Nycticorax nycticorax) in West Sumatra and the Summary of Its Sumatran Records
Full text linkThe Black-crowned Night heron (Nycticorax nycticorax) is a known visitor in Sumatra with more sighting records in the eastern side of the island. Meanwhile, on the west, it was historically recorded from only two offshore islands, namely Nias and Enggano. During the waterbird survey from early 2018 at Pasir Jambak Beach of Padang City in the coastline of West Sumatra, a Night heron was spotted among the colony of mixed egret species. This study aims to update the knowledge of this species in West Sumatra, as well as its general occurrence in Sumatra. This study was conducted by counting the population of each waterbird species found in the research area, while for documentation purposes, a Nikon Coolpix P900 was used to take pictures. Species identification was guided with related books for the Sumatera area. Data then were analyzed and outlined descriptively in accordance with what accumulated from the field survey and online searching. The result showed that the first sighting of Black-crowned Night-heron in West Sumatra follows the common fly-through route of migrant birds in eastern side of Sumatra. The summary of the compiled records of this species indicates that it is probably a vagrant along the western coastline, while it visits more frequently on the eastern side. This is the first record of its kind in the province of West Sumatra, although, previous records cover almost all provinces in Sumatra.
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
Some additional records to the inventory of dragonflies and damselflies (Odonata) in Andalas University’s Limau Manis campus complex, Padang, West Sumatra
Full text linkSince the publication of inventory list for dragonflies and damselflies within the boundary of Andalas University’s Limau Manis Campus Complex, Padang, on 2018, the survey efforts have been continuously conducted. Hence, in this article we add five odonate species new for Andalas University’s Limau Manis Campus Complex, with one species Drepanosticta cf. bispina may require further investigation and elaboration on its existence in West Sumatra. We also corrected the identification of Heliocypha fenestrata into H. angusta angusta. With this addition, Andalas University’s Limau Manis Campus Complex currently resides for 32 species and 9 families of Odonata, increasing from previously 27 species and 8 families
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