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Sunday, November 14th, 2021
| Time | Event | ||||||
| 2:37a | [Conservation / Ornithology • 2021] Hydropower Reservoir reduces Great Argus Argusianus argus Density in Proximity to Its Shore
Summary Habitat degradation due to hydropower development within protected areas has a marked negative effect on resident wildlife species. However, efforts to develop appropriate conservation and management plans are hampered by a general lack of quantitative information and a poor understanding of relevant ecological constraints. Great Argus Argusianus argus, a large galliform species sensitive to habitat degradation, can reflect the impacts of the Chiew Larn reservoir in southern Thailand on local wildlife. Great Argus abundance in the remaining lowland areas of Khlong Saeng Wildlife Sanctuary (KSWS) was estimated using line transects along the Chiew Larn reservoir edges and in the forest interior between February and April 2017. The population estimate for KSWS was 108 individuals (95% CI: 41–272) based on the sampled area of 18.06 km2, with a density estimate of 5.9 calling males/km2. The abundance increased with increased distance from the reservoir shoreline, which might be related to the high level of direct and indirect human disturbance close to the hydropower reservoir. Keywords: Khlong Saeng Wildlife Sanctuary, southern Thailand, Chiew Larn reservoir, density estimate Tiwa Ong-in and Tommaso Savini. 2021. Hydropower Reservoir reduces Great Argus Argusianus argus Density in Proximity to Its Shore. Bird Conservation International. First View. DOI: 10.1017/S0959270921000368  | ||||||
| 2:45a | [Botany • 2021] Dendrobium ormerodii (Orchidaceae: Epidendroideae: Dendrobieae) • A New Dendrobium Species from Central Kalimantan, Indonesia
Abstract A species new to science, Dendrobium ormerodii Handoyo, Naive & J.Champ. from Kalimantan, Borneo is herein described and illustrated. The species is superficially similar to D. fulminicaule but differs in having shorter stem, narrower leaf, dorsal sepal with acute apex, labellum without sidelobes or without the broadening at the base, labellum apex obtuse-truncate, and shorter column. Detailed description, a colour plate, line drawing, notes on phenology, distribution, and a conservation assessment are provided below. Keywords: Biodiversity, Borneo, Epidendroideae, Malesian flora, Plant Taxonomy, Magnoliid  Dendrobium ormerodii Handoyo, Naive & J.Champ.   Mark Arcebal K. Naive, Frankie Handoyo and Jeffrey Champion. 2021. Dendrobium ormerodii (Orchidaceae, Dendrobieae), A New Dendrobium Species from Central Kalimantan, Indonesia. Phytotaxa. 524(3); 205-209. DOI: 10.11646/phytotaxa.524.3.5    | ||||||
| 5:37p | [Herpetology • 2019] Cyrtodactylus muluensis & C. limajalur • Uncovering Karst Endemism within Borneo: Two New Cyrtodactylus Species (Squamata: Gekkonidae) from Sarawak, Malaysia
Abstract The island of Borneo lies within one of the most biodiverse regions in the world. Despite this, its documented gekkonid diversity is not commensurate with other areas of Southeast Asia. The megadiverse genus Cyrtodactylus is especially underrepresented. Limestone-karst ecosystems, in particular, harbor many endemic Cyrtodactylus species, but only one karst-dwelling species is currently recognized from Borneo. This paper adds two additional karst-dwelling Cyrtodactylus species—C. muluensis sp. nov. and C. limajalur sp. nov.—from Sarawak, Malaysia. Cyrtodactylus muluensis sp. nov. is endemic to Gunung Mulu and is distinguished from its congeners by having a precloacal groove, 31–38 ventral scales, a maximum SVL of at least 88 mm, enlarged subcaudals, 19–20 subdigital lamellae, and a banded dorsal body pattern. Cyrtodactylus limajalur sp. nov. is endemic to the Serian region and is distinguished from its congeners by having 33–42 ventral scales, enlarged subcaudals, a precloacal pit, a maximum SVL of at least 94 mm, 5–6 enlarged femoral scales, 19–22 subdigital lamellae, and five distinct bands on the dorsum. Both species are phylogenetically distinct and deeply divergent from all other congeners. The description of two new karst-dwelling species highlights the need to conserve karst habitats and the endemic species they harbor. Keywords: Gekkonidae, squamate, biodiversity, limestone, karst, Borneo, Reptilia
Cyrtodactylus limajalur sp. nov. Five-banded Bent-toed Gecko Etymology. The specific epithet limajalur is in reference to the banding pattern of the species. “Lima jalur” loosely translated from Malay is five-banded. Cyrtodactylus limajalur sp. nov. has a very distinct banding pattern that is consistently comprised of five bands. This species is the first Bornean Cyrtodactylus species that displays a consistent banding pattern, without blotches or other markings.
Cyrtodactylus muluensis sp. nov. Mulu Bent-Toed Gecko Distribution. Cyrtodactylus muluensis sp. nov. is known from the Clearwater Cave, Long Cave, and Lang Cave within Mulu National Park, Sarawak, East Malaysia. The Clearwater Cave and Long Cave are on the same karst peak ~1 km apart. The Mulu area has a high concentration of limestone karst formations, most of which were not surveyed over the course of our work (Fig. 3). Etymology. The specific epithet muluensis is in reference to the type locality, Gunung Mulu National Park. As this is the first endemic gekkonid described from Gunung Mulu, the name muluensis is fitting. Hayden R. Davis, Aaron M. Bauer. Todd R. Jackman, Izneil Nashriq and Indraneil Das. 2019. Uncovering Karst Endemism within Borneo: Two New Cyrtodactylus Species from Sarawak, Malaysia. Zootaxa. 4614(2); 331–352. DOI: 10.11646/zootaxa.4614.2.4 |
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