| 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%
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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%
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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. 5.25%
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| Walker, J. B., & Schulz, K. C. (1984). Records of the bont tick, amblyomma hebraeum, from the angulate tortoise, chersina angulata, and the leopard tortoise, geochelone pardalis. The Onderstepoort journal of veterinary research, 51(3), 171–173. |
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| Added by: Admin 24 Aug 2008 20:04:45 UTC |
Pop. 2.5%
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| Walker, P. (1989). Geochelone carbonaria - red-footed tortoise. In I. R. Swingland & M. W. Klemens (Eds.), The Conservation Biology of Tortoises (pp. 17–19). |
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| Added by: Admin 24 Aug 2008 17:40:13 UTC |
Pop. 2.25%
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| Walker, R. C., Whitmore, N., Rafeliarisoa, T. H., & Hamylton, S. , The effect of habitat degradation on the long term survival of the critically endangered madagascar spider tortoise (pyxis arachnoides) - abstract. Unpublished paper presented at Program and Abstracts of the Tenth Annual Symposium on the Conservation and Biology of Tortoises and Freshwater Turtles. |
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| Added by: Admin 06 Jan 2014 18:23:14 UTC |
Pop. 3.25%
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| 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. (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. 2.5%
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| Walker, P. (1989). Geochelone chilensis - chaco tortoise. In I. R. Swingland & M. W. Klemens (Eds.), The Conservation Biology of Tortoises (pp. 20–21). |
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| Added by: Admin 24 Aug 2008 17:40:13 UTC |
Pop. 2.25%
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| Walker, R. C. (2011). The development of a cost effective method for measuring the variation of area in contrasting scute pigmentation in chelonians. Herpetological Conservation and Biology, 6(1), 51–60. |
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| Added by: Sarina Wunderlich 25 Jun 2011 12:42:20 UTC |
Pop. 2.5%
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| Walker, R. C., Rafeliarisoa, T. H., Currylow, A. F., & Louis, E. E. , The rapid decline in population density of southern madagascar’s tortoises - abstract. Unpublished paper presented at Program and Abstracts of the Tenth Annual Symposium on the Conservation and Biology of Tortoises and Freshwater Turtles. |
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| Added by: Admin 06 Jan 2014 18:23:14 UTC |
Pop. 3.5%
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| 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%
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| Walde, A. D., Delaney, D. K., Harless, M. L., & Pater, L. L. (2007). Osteophagy by the desert tortoise (gopherus agassizii). Southwestern Naturalist, 52(1), 147–149. |
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| Added by: Admin 14 Aug 2008 20:32:50 UTC |
Pop. 2.75%
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| Walde, A. D., Delaney, D. K., & Pater, L. L. , Microhabitat selection by desert tortoises (gopherus agassizii) in the mojave desert. Paper presented at Turtle Survival Alliance 2006 Annual Meeting. |
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| Added by: Admin 13 Dec 2008 22:23:58 UTC |
Pop. 2.75%
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| Walde, A. D., Harless, M. L., Delaney, D. K., & Pater, L. L. (2007). Anthropogenic threat to the desert tortoise (gopherus agassizii): litter in the mojave desert. Western North American Naturalist, 76(1), 147–149. |
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| Last edited by: Beate Pfau 29 Dec 2009 09:09:39 UTC |
Pop. 3.25%
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| Walde, A. D., Walde, A. M., & Delaney, D. K. (2008). Gopherus agassizii (dester tortoise). predation. Herpetological Review, 39(2), 214. |
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| Added by: Admin 06 Jan 2014 18:25:29 UTC |
Pop. 3.75%
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| Walde, A. D., Walde, A. M., Delaney, D. K., & Pater, L. L. (2009). Burrows of desert tortoises (gopherus agassizii) as thermal refugia for horned larks (eremophila alpestris) in the mojave desert. The Southwestern Naturalist, 54(4), 375–381. |
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| Added by: Admin 28 Dec 2009 19:57:14 UTC |
Pop. 3%
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| Waibel, E. A. (2009). Mixed effects of ingestion by the aldabran giant tortoise (aldabrachelys gigantea) on the germination of alien plant species on the mascarene islands. Unpublished thesis , University of Zürich, Zürich. |
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| Added by: Sarina Wunderlich 30 Jun 2012 22:02:01 UTC |
Pop. 3%
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| Wahlquist, H. , Gopher tortoise conservation. Paper presented at Proc. 1st Int. Symp. Turtles & Tortoises: Conservation and captive husbandry. Orange, California. |
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| Added by: Admin 24 Aug 2008 17:40:12 UTC |
Pop. 2.25%
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| Wahlquist, H. (1991). The turtle of the month: horsfield's tortoise, agrionemys horsfieldi. Tortuga Gazette, 27 (6), 1–3. |
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| Added by: Admin 24 Aug 2008 17:40:12 UTC |
Pop. 2%
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