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All Journal TREUBIA Biosaintifika: Journal of Biology & Biology Education
Berryman, Alex J.
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Agriculture, Biological Sciences & Forestry Education

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Population Assessment of Sulawesi’s Endangered Snoring Rails (Aramidopsis plateni Blasius) in Gandang Dewata National Park Putera, Alexander Kurniawan Sariyanto; Nasir, Yusrianto; Rusmidin, Rusmidin; Nuruliawati, Nuruliawati; Berryman, Alex J.
Biosaintifika: Journal of Biology & Biology Education Vol 15, No 3 (2023): December 2023
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v15i3.47487

Abstract

This study focuses on assessing the critically endangered mandar dengkur, or snoring rails (Aramidopsis plateni Blasius 1886), within Indonesia's Gandang Dewata National Park. Despite its importance in regional biodiversity, the species remains poorly documented. The primary objectives of this research are to investigate the population and ecological role of the mandar dengkur in Gandang Dewata National Park. It aims to understand their population status, the factors influencing their survival, and the level of global threats facing this species. Field surveys from July to August 2023 employed point counts and interviews with local residents, revealing a population of 20 snoring rails. Tondok Bakaru was identified as the primary subpopulation, with the highest count and probability of occurrence. Tondok Bakaru, characterized by remote and isolated areas, plays a crucial role in snoring rails' survival, mirrored by discoveries of other sensitive species like the Anoa. Environmental variables analysis through Generalized Linear Modeling (GLM) identified the nearest food source and settlement as significant factors influencing snoring rail populations, aligning with their elusive nature. The selected GLM model highlighted the impact of average NDVI, distance to the nearest food source, and distance to the nearest settlement on snoring rail density, guiding conservation efforts. This study underscores the urgency of upgrade the snoring rails' conservation status to Endangered (EN) and implementing global conservation measures by improving data collection with technology.
THE BIRDS OF THE KANGEAN ISLANDS AND AN APPRAISAL OF THEIR CONSERVATION STATUS Berryman, Alex J.; Rutt, Cameron L.; Irham, Mohammad; van Balen, Sebastianus
TREUBIA Vol 51, No 1 (2024)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/treubia.v51i1.4681

Abstract

The Kangean islands are a biologically poorly known archipelago situated in the Java Sea, Indonesia, approximately 120 km directly north of Bali. These islands host an avifauna comprising at least 13 endemic subspecies, two of which have by some sources recently been considered species. We combine historical published literature with our own surveys of the archipelago in 2007–2008, 2010 and 2023 to produce a complete list of the islands’ birds (n=140 species) and their distribution across the islands. We evaluate in more detail the conservation status of all endemic taxa, as well as several others we consider to be of concern. Despite its listing as Vulnerable on the IUCN Red List, the endemic Kangean Tit-babbler Mixornis prillwitzi is highly tolerant of habitat degradation and is among the islands’ least threatened birds. However, because of trapping, the archipelago’s endemic taxon of Red-breasted Parakeet Psittacula alexandri kangeanensis, and its populations of Green Junglefowl Gallus varius and Common Hill Myna Gracula religiosa are likely at risk of extirpation. The endemic taxon of White-rumped Shama Copsychus malabaricus, sometimes afforded species rank as ‘Kangean Shama’ C. nigricauda, may already be (at least functionally) extinct in the main archipelago. We recommend longer and more detailed surveys of the islands’ birds, and that an effective protected area is established on main Kangean island, which hosts the largest area of remaining forest in the archipelago and most of its endemic taxa.
Co-Authors Alexander Kurniawan Sariyanto Putera Mohammad Irham Nasir, Yusrianto Nuruliawati, Nuruliawati Rusmidin, Rusmidin Rutt, Cameron L. van Balen, Sebastianus