| Barley, S. M., & Walker, R. C. J. (2013). Population density and seasonal detection rates of a unique population of critically endangered northern madagascar spider tortoise (pyxis arachnoides brygooi). Herpetological Conservation and Biology, 8(3), 616–621. |
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| Added by: Sarina Wunderlich 06 Jul 2014 16:10:29 UTC |
Pop. 5.5%
|
| Walker, R. C. J., Woods-Ballard, A. J., & Rix, C. E. (2007). Population density and seasonal activity of the threatened madagascar spider tortoise (pyxis arachnoides arachnoides) of the southern dry forests; south west madagascar. African Journal of Ecology, 46(1), 67–73. |
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| Added by: Admin 14 Aug 2008 20:34:36 UTC |
Pop. 3.25%
|
| Walker, R. C. J. (2009). Preliminary results of a population range and density survey for pyxis arachnoides brygooi in madagascar. TurtleLog: Online Newsletter of the IUCN/SSC Tortoise and Freshwater Turtle Specialist Group, 3. |
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| Added by: Admin 18 Jul 2009 11:46:27 UTC |
Pop. 2.5%
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| Walker, R. C. J., & Rafeliarisoa, T. H. (2010). Distribution of the madagascar spider tortoise, pyxis arachnoides. Turtle Survival Alliance Magazine, 2010, 61–63. |
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| Added by: Sarina Wunderlich 12 Dec 2010 20:43:17 UTC |
Pop. 3%
|
| Walker, R. C. J., Whitmore, N., Rafeliarisoa, T. H., & Hamylton, S. (2012). The effect of habitat degradation on the long term survival of the critically endangered madagascar spider tortoise (pyxis arachnoides). Biological Conservation, 152, 152–158. |
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| Added by: Sarina Wunderlich 30 Jun 2012 22:02:03 UTC |
Pop. 3.25%
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| Walker, R. C. J., Gardner, C. J., Rafeliarisoa, T. H., Smith, I., Razafimanatsoa, R., & Louis, E. E. (2013). Conservation of the madagascar spider tortoise (pyxis arachnoides) amid changing land use policy: Assessing the spatial coincidence of relict populations with protected areas and mining concessions. In C. M. Castellano, A. G. J. Rhodin, M. Ogle, R. A. Mittermeier, H. Randriamahazo, R. Hudson & R. E. Lewis (Eds.), Turtles on the Brink in Madagascar: Proceedings of Two Workshops on the Status, Conservation, and Biology of Malagasy Tortoises and Freshwater Turtles Vol. 6, (pp. 135–145).Chelonian Research Foundation. |
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| Added by: Sarina Wunderlich 06 Jul 2014 16:17:28 UTC |
Pop. 5.5%
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| Walker, R. C. J. (2009). The spider tortoise (pyxis arachnoides): madagascar's forgotten species? Testudo, 7, 77–84. |
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| Added by: Sarina Wunderlich 12 Dec 2010 20:43:17 UTC |
Pop. 2.75%
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| Walker, R. C. J., Luiselli, L., Woods-Ballard, A. J., & Rix, C. E. (2012). Microhabitat use by the critically endangered madagascar endemic tortoise, pyxis arachnoides. Herpetological Journal, 22(1), 63–66. |
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| Added by: Sarina Wunderlich 30 Jun 2012 22:02:02 UTC |
Pop. 3.5%
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| Walker, R. C. J., & Rafeliarisoa, T. H. (2012). Distribution of radiated tortoise (astrochelys radiata) bush meat poaching effort. Chelonian Conservation & Biology, 11(2), 223–226. |
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| Added by: Admin 06 Jan 2014 18:23:14 UTC |
Pop. 4.5%
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| Walker, R. C. J., Rix, C. E., & Woods-Ballard, A. J. (2004). The export of the endangered madagascar spider tortoise (pyxis arachnoides) to support the exotic pet trade. Herpetological Bulletin, 90, 2–9. |
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| Added by: Admin 14 Aug 2008 20:38:57 UTC |
Pop. 2.5%
|
| Walker, R. C. J. (2010). The decline of the critically endangered northern madagascar spider tortoise (pyxis arachnoides brygooi). Herpetologica, 66(4), 411–417. |
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| Added by: Sarina Wunderlich 12 Dec 2010 20:43:17 UTC |
Pop. 3%
|
| Walker, R. C. J. (2012). A critical evaluation of field survey methods for establishing the range of a small, cryptic tortoise (pyxis arachnoides). Herpetological Journal, 22(1), 7–12. |
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| Added by: Sarina Wunderlich 30 Jun 2012 22:02:02 UTC |
Pop. 3%
|
| Woods-Ballard, A. J., Fanning, E., Rix, C. E., & Walker, R. C. J. (2004). Radiated tortoises found on the protected island of nosy vé, southwest madagascar. Turtle and Tortoise Newsletter, 7, 26–27. |
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| Added by: Admin 14 Aug 2008 20:37:25 UTC |
Pop. 2.75%
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