Observer bias in anuran call surveys

Journal of Wildlife Management

Volumn 71, Issue 2, 2007, Pages 675-679

  Lotz, Aaron ^a   Allen, Craig R ^a  

^a UNIVERSITY OF NEBRASKA LINCOLN   (United States)

Author keywords

Amphibians; Anuran call surveys; Monitoring; Observer bias; Rainwater basin; Wetlands

Indexed keywords

AMPHIBIAN; BIOLOGICAL SURVEY; VOCALIZATION; WETLAND;

NEBRASKA; NORTH AMERICA; RAINWATER BASIN; UNITED STATES;

AMPHIBIA;

EID: 41449096249     PISSN: 0022541X     EISSN: None     Source Type: Journal    
DOI: 10.2193/2005-759     Document Type: Article

References (45)

1. Bart, J., and J. D. Schoultz. 1984. Reliability of singing bird surveys: changes in observer efficiency with avian density. Auk 101:307-318.
2. Bishop, C. A., K. E. Pettit, M. E. Gartshore, and D. A. Macleod. 1997. Extensive monitoring of anuran populations using call counts and road transects in Ontario (1992 to 1993). Herpetological Conservation 1:149-160.
3. Blaustein, A. R., D. B. Wake, and W. P. Sousa. 1994. Amphibian declines: judging stability, persistence, and susceptibility of populations to local and global extinctions. Conservation Biology 8:60-71.
4. Buckley, J., and T. J. C. Beebee. 2004. Monitoring the conservation status of an endangered amphibian: the natterjack toad Bufo calamita in Britain. Animal Conservation 7:221-228.
5. Conant, R., and J. T. Collins. 1998. A field guide to reptiles and amphibians of eastern and central North America. Houghton Mifflin, New York, New York, USA.
6. Corn, P. S., E. Muths, and W. M. Iko. 2000. A comparison in Colorado of three methods to monitor breeding amphibians. Northwestern Naturalist 81:22-30.
7. Crouch, W. B., III, and P. W. C. Paton. 2002. Assessing the use of call surveys to monitor breeding anurans in Rhode Island. Journal of Herpetology 36:185-192.
8. Funk, W. C., D. Almeida-Reinoso, F. Nogales-Sornosa, and M. R. Bustamante. 2003. Monitoring population trends of Eleutherodactylus frogs. Journal of Herpetology 37:245-256.
9. Genet, K. S., and L. G. Sargent. 2003. Evaluation of methods and data quality from a volunteer-based amphibian call survey. Wildlife Society Bulletin 31:703-714.
10. Goldberg, C. S., and C. R. Schwalbe. 2004. Considerations for monitoring a rare anuran (Eleutherodactylus augusti). The Southwestern Naturalist 49: 442-448.
11. Grant, E. H. C., R. E. Jung, J. D. Nichols, and J. E. Hines. 2005. Doubleobserver approach to estimating egg mass abundance of pool-breeding amphibians. Wetlands ecology and management 13:305-320.
12. Hemesath, L. M. 1998. Iowa's frog and toad survey, 1991-1994. Pages 206-216 in M. J. Lannoo, editor. Status and conservation of Midwestern amphibians. University of Iowa, Iowa City, USA.
13. Keitt, T. H., D. L. Urban, and B. T. Milne. 1997. Detecting critical scales in fragmented landscapes. Conservation Ecology 1(1):4. . Accessed 15 Oct 2005.
14. Kline, J. 1998. Monitoring amphibians in created and restored wetlands. Pages 360-368 in M. J. Lannoo, editor. Status and conservation of Midwestern amphibians. University of Iowa, Iowa City, USA.
15. Knutson, M. G., J. R. Sauer, D. A. Olsen, M. J. Mossman, L. M. Hemesath, and M. J. Lannoo. 1999. Effects of landscape composition and wetland fragmentation on frog and toad abundance and species richness in Iowa and Wisconsin, U.S.A. Conservation Biology 13:1437-1446.
16. Kolozsvary, M. B., and R. K. Swihart. 1999. Habitat fragmentation and the distribution of amphibians: patch and landscape correlates in farmland. Canadian Journal of Zoology 77:1288-1299.
17. Lehtinen, R. M., S. M. Galatowitsch, and J. R. Tester. 1999. Consequences of habitat loss and fragmentation for wetland amphibian assemblages. Wetlands 19:1-12.
18. MacKenzie, D. I., J. D. Nichols, G. B. Lachman, S. Droege, J. A. Royle, and C. A. Langtimm. 2002. Estimating site occupancy rates when detection probabilities are less than one. Ecology 83:2248-2255.
19. McDiarmid, R. W., and M. Donnelly. 1994. Group activities and field trips. Pages 175-182 in W. R. Heyer, M. A. Donnelly, R. W. McDiarmid, L. C. Hayek, and M. S. Foster, editors. Measuring and monitoring biological diversity: standard methods for amphibians. Smithsonian Press, Washington, D.C., USA.
20. McLaren, M. A., and M. D. Cadman. 1999. Can novice volunteers provide credible data for bird surveys requiring song identifications? Journal of Field Ornithology 70:481-490.
21. Miaud, C., D. Sanuy, and J. N. Avrillier. 2000. Terrestrial movements of the natterjack toad Bufo calamita in a semi-arid, agricultural landscape. Amphibia Reptilia 21:357-369.
22. Mossman, M. J., M. Hartman, R. Hay, J. R. Sauer, and B. J. Dhuey. 1998. Monitoring long-term trends in Wisconsin frog and toad populations. Pages 169-198 in M. J. Lannoo, editor. Status and conservation of Midwestern amphibians. University of Iowa, Iowa City, USA.
23. Munger, J. C., M. Gerber, K. Madrid, M. A. Carroll, W. Peterson, and L. Heberger. 1998. U.S. National Wetland Inventory classifications as predictors of the occurrence of Columbia spotted frogs (Rana luteiventris) and pacific treefrogs (Hyla regilla). Conservation Biology 12:320-330.
24. Muths, E. 2003. Home range and movements of boreal toads in undisturbed habitat. Copeia 1:160-165.
25. Nichols, J. D., J. E. Hines, J. R. Sauer, F. W. Fallon, J. E. Fallon, and P. J. Heglund. 2000. A double-observer approach for estimating detection probability and abundance from point counts. Auk 117:393-408.
26. Parris, K. M. 2004. Environmental and spatial variables influence the composition of frog assemblages in sub-tropical eastern Australia. Ecography 27:392-400.
27. Parris, K. M., T. W. Norton, and R. B. Cunningham. 1999. A comparison of techniques for sampling amphibians in the forests of south-east Queensland, Australia. Herpetologica 55:271-283.
28. Paszkowski, C. A., G. Scrimgeour, B. A. Gingras, and S. Kendall. 2002. A comparison of techniques for assessing amphibian assemblages on streams in the western boreal forest. The Canadian Field-Naturalist 116:116-119.
29. Pearman, P. B., A. M. Velasco, and A. Lopez. 1995. Tropical amphibian monitoring: a comparison of methods for detecting inter-site variation in species composition. Herpetologica 51:325-337.
30. Pellet, J., and B. R. Schmidt. 2005. Monitoring distributions using call surveys: estimating site occupancy, detection probabilities and inferring absence. Biological Conservation 123:27-35.
31. Pierce, B. A., and K. J. Gutzwiller. 2004. Auditory sampling of frogs: detection efficiency in relation to survey duration. Journal of Herpetology 38:495-500.
32. Pope, S. E., L. Fahrig, and H. G. Merriam. 2000. Landscape complementation and metapopulation effects on leopard frog populations. Ecology 81:2498-2508.
33. Sargent, L. G. 2000. Frog and toad population monitoring in Michigan. Journal of the Iowa Academy of Sciences 107:195-199.
34. SAS Institute. 1999. SAS user's guide: statistics. Version 5 edition. SAS Institute, Cary, North Carolina, USA.
35. Sauer, J. R., B. G. Peterjohn, and W. A. Link. 1994. Observer differences in the North American Breeding Bird Survey. Auk 111:50-62.
36. Schmidt, B. R. 2005. Monitoring the distribution of pond-breeding amphibians when species are detected imperfectly. Aquatic Conservation 15:681-692.
37. Scott, N. J., and B. D. Woodward. 1994. Surveys at breeding sites. Pages 118-125 in W. R. Heyer, M. A. Donnelly, R. W. McDiarmid, L. C. Hayek, and M. S. Foster, editors. Measuring and monitoring biological diversity: standard methods for amphibians. Smithsonian Press, Washington, D.C., USA.
38. Shirose, L. J., C. A. Bishop, D. M. Green, C. J. MacDonald, R. J. Brooks, and N. J. Heleferty. 1997. Validation tests of an amphibian call count survey technique in Ontario, Canada. Herpetologica 53:312-320.
39. Skelly, D. K., K. L. Yurewicz, E. E. Werner, and R. A. Relyea. 2003. Estimating decline and distributional change in amphibians. Conservation Biology 17:744-751.
40. Stevens, C. E., A. W. Diamond, and T. S. Gabor. 2002. Anuran call surveys on small wetlands in Prince Edward Island, Canada restored by dredging of sediments. Wetlands 22:90-99.
41. Stevens, C. E., and C. A. Paszkowski. 2004. Using chorus-size ranks from call surveys to estimate reproductive activity of the wood frog (Rana sylvatica). Journal of Herpetology 38:404-410.
42. Trenham, P. C., W. D. Koenig, M. J. Mossman, S. L. Stark, and L. A. Jagger. 2003. Regional dynamics of wetland-breeding frogs and toads: turnover and synchrony. Ecological Applications 13:1522-1532.
43. Vandewalle, T. J., K. K. Sutton, and J. L. Christiansen. 1996. Pseudacris crucifer. an Iowa case history study of an amphibian call survey. Herpetological Review 27:183-185.
44. Wear, D. J., D. E. Keil, and R. Altig. 2002. Inter-observer survey comparisons: stream frogs in southeastern Madagascar and a lab test. Herpetological Natural History 9:79-82.
45. Zampella, R. A., and J. F. Bunnell. 2000. The distribution of anurans in two river systems of a coastal plain watershed. Journal of Herpetology 34: 210-221.