Estimating Population Size and Detection Probability of the Lorestan Newt, Neurergus kaiseri (Schmidt, 1952) using an In
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stimating Population Size and Detection Probability of the Lorestan Newt, Neurergus kaiseri (Schmidt, 1952) using an Integrated Method Alireza Pesaraklooa,*, Masoumeh Najibzadehb, and Sayed Jamal Mirkamalic aDepartment
of Biology, Faculty of Science, Arak University, Arak, 3813853945 Iran Plateau Herpetology Research Group (IPHRG), Razi University, Kermanshah, 6714967346 Iran c Department of Mathematics, Faculty of Science, Arak University, Arak, 3813853945 Iran *e-mail: [email protected]
bIranian
Received February 10, 2020; revised June 15, 2020; accepted July 1, 2020
Abstract—Robust estimates of species population abundance are necessary for the success of conservation plans and species management strategies. In the present study, our main objective was described a combination method to estimate of detection probability (P) at hands of estimating population size of adult and subadult individuals N. kaiseri. N. kaiseri is listed as a critically endangered species because of its highly fragmented breeding habitat and also because it occupies a small range during its reproductive period. We did determine P in our study, which would have allowed us to estimate population size, we conducted the visual encounter surveys at various times of morning, noon and afternoon during March until April, which is likely when the detection probability reaches its highest value for three years. The observation possibility of the Lorestan newts is highest in the evening approximately 60% and lowest in the noon about 46% while detection probability in Morning was about 50% (P value ≤ 0.05). We surveyed a total of 55 sites in the southwestern of Iran for N. kaiseri. The Lorestan newts used a considerable variation of Aquatic habitats. Population size of the Lorestan newt (adult and subadult individuals) by P estimated at least 14709 ± 247. However, these findings suggest that the true population size there is not big. It is essential that we coherent conservation program such as captive management as a stopgap component of an integrated port conservation effort, population of N. kaiseri in small sites could become extinct. Keywords: conservation management, detection probability, population size, critically endangered species DOI: 10.1134/S1067413620060089
Many conservation biologists [e.g., 1, 2] believed that amphibian species have been declining faster than other vertebrate taxa throughout the world [3]. Strong estimates of species population size are needed for the success of conservation programs and species management strategies [4]. Species living in drier areas such as Iran are definitely more threatened, Iran has a land area of 1.648.195 km2, however, two-thirds of this land is located in the arid and semi-arid Iranian Plateau [5]. Due to high aridity relatively few species of amphibians are expected to occur in Iran. However, within this diverse climatic and topographic landscape there are reports of presence of at least 23 species of amphibian including nine species of toads, seven species of frogs, and seven species
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