Discovery of a new crocodile lizard population in Vietnam: Population trends, future prognoses and identification of key habitats for conservation Author Schingen, Mona van Cologne Zoo, Riehler Strasse 173, D- 50735 Köln, Germany & Department of Terrestrial Ecology, Institute of Zoology, University of Cologne, Zülpicher Strasse 47 b, D- 50674 Köln, Germany Author Ha, Quynh Quy Department of Application and Development of Technology, Vietnam Academy of Science and Technology 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam & Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Hanoi, Vietnam Author Pham, Cuong The Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Hanoi, Vietnam Author Le, Tuan Quang Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Hanoi, Vietnam Author Nguyen, Truong Quang Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Hanoi, Vietnam Author Bonkowski, Michael Department of Terrestrial Ecology, Institute of Zoology, University of Cologne, Zülpicher Strasse 47 b, D- 50674 Köln, Germany Author Ziegler, Thomas Cologne Zoo, Riehler Strasse 173, D- 50735 Köln, Germany & Department of Terrestrial Ecology, Institute of Zoology, University of Cologne, Zülpicher Strasse 47 b, D- 50674 Köln, Germany text Revue suisse de Zoologie 2016 2020-01-01 123 2 241 251 journal article 10.5281/zenodo.155297 0035-418 155297

Table 1. Summary of observed, estimated and recaptured Shinisaurus crocodilurus in Vietnam between 2010 and 2015.

	Tay Yen Tu			Yen Tu		Dong Son-Ky Thuong			Hai Ha (new)	Total
Variable	Site 1	Site 2	Site 1	Site 2	Site 3	Site 1	Site 2	Site 3	Site 1
2010
Total (observed)	4	9	*	*	*	*	*	*	*	13
Mature (obs.)	3	4	*	*	*	*	*	*	*	7
Juveniles (obs.)	0	2	*	*	*	*	*	*	*	2
Night surveys	5	4	*	*	*	*	*	*	*	9
Total (estimated)	5	12	*	*	*	*	*	*	*	17
Mature (est.)	4	5	*	*	*	*	*	*	*	9
2013
Total (observed)	7	33	3	8	*	2	4	5	*	62
Mature (obs.)	3	11	2	8	*	2	2	3	*	31
Juveniles (obs.)	2	21	1	0	*	0	1	0	*	25
Recaptures	1	1	*	*	*	*	*	*	*	2
Night surveys	3	5	1	2	*	1	1	1	*	14
Total (estimated)	10	42	7	13	*	5	9	12	*	98
Mature (est.)	4	14	5	13	*	5	5	7	*	53
2014
Total (observed)	9	25	0	7	7	1	1	1	*	51
Mature (obs.)	5	6	0	0	1	1	0	0	*	13
Juveniles (obs.)	3	18	0	7	5	0	0	0	*	33
Recaptures	3	3	0	0	*	1	0	1	*	8
Night surveys	2	3	0	1	1	1	1	1	*	10
Total (estimated)	15	36	0	16	16	2	2	2	*	91
Mature (est.)	8	9	0	0	2	2	0	0	*	22
2015
Total (observed)	27	25	0	0	20	0	4	5	12	93
Mature (obs.)	10	10	0	0	4	0	2	1	1	28
Juveniles (obs.)	10	13	0	0	15	0	1	4	11	54
Recaptures	6	7	0	0	1	0	2	1	*	17
Night surveys	6	6	0	1	2	1	1	1	1	19
Total (estimated)	33	31	0	0	34	0	9	12	28	147
Mature (est.)	12	12	0	0	7	0	5	2	2	41