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Title

Population densities and conservation assessment of three threatened agamid species in Horton Plains National Park, Sri Lanka

مجله حیات وحش و تنوع زیستی، دوره: 4، شماره: 3
Year: 1399
COI: JR_JWB-4-3_008
Language: EnglishView: 153
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Authors

Dulan Jayasekara - University of Sri Jayewardenepura
Lakshika Keerthirathna - Department of Zoology, Faculty of Applied Sciences, University of Sri Jayewardenepura
Dharshani Mahaulpatha - University of Sri Jayewardenepura

Abstract:

Horton Plains National Park is home for three endemic and threatened agamid species in Sri Lanka; Ceratophora stoddartii, Cophotis ceylanica and Calotes nigrilabris. This study was conducted to estimate the population densities of these lizard species within HPNP in 2016 and 2017. Line transect surveys were carried out following the Distance method to obtain population counts. A total of 288 transects were surveyed in two different time periods of each year; Dry months and Wet months. The program Distance 7.1 was used for density calculations. Highest population density was recorded for Ce. stoddartii in the wet months of 2016 and 2017 (32.91 ind/ha, n=77; 26.70 ind/ha, n=66). However, Ce. stoddartii density was relatively lower in the dry months of both years (2016: 19.79 ind/ha, n=58; 2017: 17.18 ind/ha, n=55). Lowest population density was recorded for Ca. nigrilabris in the wet season of 2017 (7.80 ind/ha, n=38). The population density of Co. ceylanica did not show much fluctuation throughout all four sampling periods was relatively lower when compared with other species. These results indicate that more conservation focus is required to protect these agamids that have low and declining populations when compared to past literature available. They are also facing the threat of illegal smuggling.

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This Paper COI Code is JR_JWB-4-3_008. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/1030160/

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Jayasekara, Dulan and Keerthirathna, Lakshika and Mahaulpatha, Dharshani,1399,Population densities and conservation assessment of three threatened agamid species in Horton Plains National Park, Sri Lanka,https://civilica.com/doc/1030160

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