DrapeauLeducMcNeil1999

Reference

Drapeau, P., Leduc, A., McNeil, R. (1999) Refining the use of point counts at the scale of individual points in studies of bird-habitat relationships. Journal of Avian Biology, 30(4):367-382.

Abstract

Useful sampling guidelines have recently been provided to improve the precision of bird population parameter estimates from point count data. Less attention has been given, however, to the issue of accuracy or completeness of counts at each sampling point. While it may not be critical in studies that compare average counts among study plots, completeness of counts at the level of individual points may pose several problems in studies that assess relationships between response variables (species' occurrence or abundance) and explanatory variables (vegetation structure, size and isolation of the fragment, proportion of interior habitat) on a point by point basis. Reliability of models in such studies is greatly dependent on the accuracy of counts at each point. We examined how bias of incomplete counts could be minimised through refinements of the point-count method. Six forest types of the northeastern deciduous forest in Quebec (Canada) were intensively surveyed during an entire breeding season. Census performances of the point-count method for measuring species richness at individual points were assessed by resampling the original data set for a simulated census protocol of two visits at a point. Effects of daily variation, time of season, time of day, and count duration were tested. Census performances of counts conducted the same day were significantly poorer than counts from different days. Census performances were influenced by the time of season during which counts were conducted. When pooled across habitats, census performances for counts that combined visits at the beginning and at the end of the breeding season were significantly better than counts that were concentrated in either one of these periods. The 05:00 to 08:30 morning period yielded the best results for five of the six habitats. Census performances in open field were, however, significantly better during the first sampling period (04:30), suggesting that bird censuses in open habitats could be initiated before sunrise. Longer counts (25 and 20 min) greatly improved species richness estimates at a point. For studies that focus on comparisons at the scale of individual points, longer counts are preferable to short counts (15 and 10 min). We stress the importance of the scale (study plots or individual points) at which statistical analyses of point count data are conducted in the decision-making process of point count sampling procedures.

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@ARTICLE { DrapeauLeducMcNeil1999,
    AUTHOR = { Drapeau, P. and Leduc, A. and McNeil, R. },
    TITLE = { Refining the use of point counts at the scale of individual points in studies of bird-habitat relationships },
    JOURNAL = { Journal of Avian Biology },
    YEAR = { 1999 },
    VOLUME = { 30 },
    PAGES = { 367-382 },
    NUMBER = { 4 },
    NOTE = { 09088857 (ISSN) Cited By (since 1996): 22 Export Date: 25 April 2007 Source: Scopus CODEN: JAVBE Language of Original Document: English Correspondence Address: Drapeau, P.; Departement de Sciences Biologiques; Universite de Montreal; C.P. 6128, Succursale Centre-Ville Montreal, Que. H3C 3J7, Canada; email: drapeau.pierre@uqam.ca References: Arnold, G.W., Changes with time of day in the species and numbers of birds seen in Wandoo Woodland (1989) Corella, 13, pp. 81-85; Askins, R.A., Philbrick, M.J., Sugeno, D.S., Relationship between the regional abundance of forest and the composition of forest bird communities (1987) Biol. Conserv., 39, pp. 129-152; Barker, R.J., Sauer, J.R., Link, W.A., Optimal allocation of point-count sampling effort (1993) Auk, 110, pp. 752-758; Barker, R.J., Sauer, J.R., Statistical aspects of point count sampling (1995) Monitoring Bird Populations by Point Counts, pp. 125-130. , Ralph, C. J., Sauer, J. R. and Droege, S. (eds). Gen. Tech. Rep. PSW-GTR-149 Pacific Southwest Research Station, Forest Service, U. S. Department of Agriculture. Albany, CA; Best, L.B., Seasonal changes in detection of individual bird species (1981) Stud. Avian Biol., 6, pp. 252-261; Bibby, C.J., Phillips, B.N., Seddon, A.J., Birds of restocked conifer plantations in Wales (1985) J. Appl. Ecol., 22, pp. 619-633; Bibby, C.J., Burgess, N.D., Hill, D.A., (1992) Bird Census Techniques, , Academic Press, San Diego; Bishop, Y.M.M., Fienberg, S.E., Holland, P.W., (1975) Discrete Multivariate Analysis: Theory and Practice, , MIT Press, Cambridge, Massachussets; Blake, J.G., Karr, J.R., Breeding birds of isolated woodlots: Area and habitat relationships (1987) Ecology, 68, pp. 1724-1734; Blondel, J., L'analyse des peuplements d'oiseaux, e?le?ment d'un diagnostic e?cologique. I. La me?tnode des e?chantillonnages fre?quentiels progressifs (E.F.P) (1975) Terre Vie, 29, pp. 533-589; Blondel, J., (1986) Bioge?ographie E?volutive, , Masson, Paris; Blondel, J., Ferry, C., Frochot, B., La me?thode des indices ponctuels d'abondance (I.P.A.) ou des releve?s d'avifaune par "stations d'e?coute" (1970) Alauda, 38, pp. 55-71; Blondel, J., Ferry, C., Frochot, B., Point counts with unlimited distance (1981) Stud. Avian Biol., 6, pp. 414-420; Buskirk, W.H., McDonald, J.L., Comparison of point count sampling regimes for monitoring forest birds (1995) Monitoring Bird Populations by Point Counts, pp. 25-34. , Ralph, C. J., Sauer, J. R. and Droege, S. (eds). Gen. Tech. Rep. PSW-GTR-149 Pacific Southwest Research Station, Forest Service, U. S. Department of Agriculture, Albany, CA; Clawson, M., Forests in the long sweep of American history (1979) Science, 204, pp. 1068-1074; Dawson, D.K., Smith, D.R., Robbins, C.S., Point count length and detection of forest Neotropical migrant birds (1995) Monitoring Bird Populations by Point Counts, pp. 35-44. , Ralph, C. J., Sauer, J. R. and Droege, S. (eds). Gen. Tech. Rep. PSW-GTR-149. Pacific Southwest Research Station, Forest Service, U. S. Department of Agriculture, Albany, CA; DeSante, D.F., A field test of the variable circular-plot censusing technique in a California coastal scrub breeding bird community (1981) Stud. Avian Biol., 6, pp. 177-185; Donovan, T.M., Jones, P.W., Annand, E.M., Thompson F.R. III, Variation in local-scale edge effects: Mechanisms and landscape context (1997) Ecology, 78, pp. 2064-2076; Freemark, K.E., Merriam, H.G., Importance of area and habitat heterogeneity to bird assemblages in temperate forest fragments (1986) Biol. Conserv., 36, pp. 115-141; Fuller, R.J., Langslow, D.R., Estimating numbers of birds by point counts: How long should counts last? (1984) Bird Study, 31, pp. 195-202; Gates, J.E., Point count modifications and breeding bird abundances in central Appalachian forests (1995) Monitoring Bird Populations by Point Counts, pp. 135-144. , Ralph, C. J., Sauer, J. R. and Droege, S. (eds). Gen. Tech. Rep. PSW-GTR-149. Pacific Southwest Research Station, Forest Service, U. S. Department of Agriculture, Albany, CA; Granholm, S.L., Bias in density estimates due to movement of birds (1983) Condor, 85, pp. 243-248; Gutzwiller, K.J., Estimating winter species richness with unlimited-distance point counts (1991) Auk, 108, pp. 853-862; Gutzwiller, K.J., Refining the use of point counts for winter studies of individual species (1993) Wilson Bull., 105, pp. 612-627; Hamel, P.B., Comparison of variable circular-plot and spot-map censusing methods in temperate decidious forest (1984) Ornis Scand., 15, pp. 266-274; Howe, R.W., Wolf, A.T., Rinaldi, T., Monitoring birds in a regional landscape: Lessons from the Nicolet National forest bird survey (1995) Monitoring Bird Populations by Point Counts, pp. 83-92. , Ralph, C. J., Sauer, J. R. and Droege, S. (eds). Gen. Tech. Rep. PSW-GTR-149. Pacific-Southwest Research Station, Forest Service, U. S. Department of Agriculture, Albany, CA; Hutto, R.L., Pletschet, S.M., Hendricks, P., A fixed-radius point-count method for nonbreeding and breeding season use (1986) Auk, 103, pp. 593-602; Ja?rvinen, O., Va?isa?nen, R.A., Estimating relative densities of land birds by point counts (1978) Ann. Zool. Fenn., 15, pp. 290-293; Legendre, L., Legendre, P., (1983) Numerical Ecology. Developments in Environmental Modelling, p. 3. , Elsevier, Amsterdam; Lynch, J.F., Whigham, D.F., Effects of forest fragmentation on breeding bird communities in Maryland, USA (1984) Biol. Conserv., 28, pp. 287-324; McGarigal, K., McComb, W.C., Relationships between landscape structure and breeding birds in the Oregon coast range (1995) Ecol. Monogr., 65, pp. 235-260; Miller R.G., Jr., Developments in multiple comparisons (1977) J. Am. Stat. Assoc., 72, pp. 779-1778; Nice, M.M., Studies in the life history of the Song Sparrow. II (1943) Trans. Linn. Soc. New York, 4, pp. 1-328; Pendleton, G.W., Effects of sampling strategy, detection probability, and independence of counts on the use of point counts (1995) Monitoring Bird Populations by Point Counts, pp. 131-134. , Ralph, C. J., Sauer, J. R. and Droege. S. (eds). Gen. Tech. Rep. PSW-GTR-149. Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture, Albany, CA; Peterjohn, B.G., Sauer, J.R., Robbins, C.S., Population trends from the North American breeding bird survey (1995) Ecology and Management of Neotropical Migratory Birds, pp. 3-39. , Martin, T. E. and Finch, D. M. (eds). Oxford University Press, New York; Petit, D.R., Petit, L.J., Saab, V.A., Martin, T.E., Fixed-radius point counts in forests: Factors influencing effectiveness and efficiency (1995) Monitoring Bird Populations by Point Counts, pp. 49-56. , Ralph, C. J., Sauer. J. R. and Droege, S. (eds). Gen. Tech. Rep. PSW-GTR-149. Pacific Southwest Research Station, Forest Service, U. S. Department of Agriculture, Albany, CA; Prodon, R., Lebreton, J.D., Breeding avifauna of a Mediterranean succession: The holm oak and cord oak series in the eastern Pyrenees. II. Analysis and modeling of the structure gradient (1981) Oikos, 37, pp. 21-38; Ralph, C.J., Scott, J.M., Estimating numbers of terrestial birds (1981) Stud. Avian Biol., p. 6; Ralph, C.J., Sauer, J.R., Droege, S., Monitoring bird populations by point counts (1995) Gen. Tech. Rep. PSW-GTR-149, , Pacific Southwest Research Station. Forest Service, U. S. Department of Agriculture. Albany. CA; Ralph, C.J., Sauer, J.R., Droegc, S., Managing and monitoring birds using point counts: Standards and applications (1995) Monitoring Bird Populations by Point Counts, pp. 161-168. , Ralph, C. J., Sauer, J. R. and Droege. S. (eds). Gen. Tech. Rep. PSW-GTR-149. Pacific Southwest Research Station, Forest Service, U. S. Department of Agriculture. Albany, CA; Robbins, C.S., Effects of forest fragmentation on breeding bird populations in the Piedmont of the mid-Atlantic region (1980) Atlantic Nat., 33, pp. 31-36; Robbins, C.S., Effect of time of day on bird activity (1981) Stud. Avian Biol., 6, pp. 275-286; Robbins, C.S., Bystrak, D., Geissler, P.H., (1986) The Breeding Bird Survey: Its First Fifteen Years, 1965-1979, , U. S. Fish and Wildlife Service. Resource Publication No. 157. Washington, D. C; Robbins, C.S., Dawson, D.K., Dowell, B.A., Habitat area requirements of breeding forest birds of the middle Atlantic states (1989) Wildl. Monogr., 103, pp. 1-34; (1985) SAS/stat User's Guide: Statistics, , SAS Institute, Inc., Cary, NC; Sauer, J.R., Barker, R.J., Geissler, P.H., Statistical aspects of modeling population changes from population size data (1994) Wildlife Toxicology and Population Modeling: Integrated Studies of Agroecosystems, pp. 541-566. , Kendall, R. I. and Lacher T. E. (eds). CRC Press, Boca Raton, FL; Savard, J.-P.L., Hooper, T.D., Influence of survey length and radius size on grassland bird surveys by point counts at Williams Lake, British Columbia (1995) Monitoring Bird Populations by Point Counts, pp. 57-62. , Ralph, C. J., Sauer, J. R. and Droege, S. (eds). Gen. Tech. Rep. PSW-GTR-149. Pacific Southwest Research Station, Forest Service, U. S. Department of Agriculture, Albany, CA; Schmiegelow, F.K.A., Machtans, C.S., Hannon, S.J., Are boreal birds resilient to forest fragmentation? An experimental study of short-term community responses (1997) Ecology, 78, pp. 1914-1932; Scott, J.M., Ramsey, F.M., Length of count period as a possible source of bias in estimating bird densities (1981) Stud. Avian Biol., 6, pp. 409-413; Shields, W.M., The effect of time of day on avian census results (1977) Auk, 94, pp. 380-383; Skirvin, A.A., Effect of time of day and time of season on the number of observations and density estimates of breeding birds (1981) Stud. Avian Biol., 6, pp. 271-274; Slagsvold, T., Bird song activity in relation to breeding cycle, spring weather, and environmental phenoloey (1977) Ornis Scand., 8, pp. 197-222; Smith, P.W., Twedt, D.J., Wiendenfeld, D.A., Hamel, P.B., Ford, R.P., Cooper, R.J., Point counts of birds in bottomland hardwood forests of the Mississippi alluvial valley: Duration, minimum sample size, and points versus visits (1993) U.S. Department of Agriculture Forest Service, Res. Paper S0-274; Sokal, R.R., Rohlf, F.J., (1981) Biometry, , Freeman, San Francisco, California; Spitz, F., Conversion des re?sultats d'e?chantillonnages ponctuels simples d'oiseaux en densite?s de population (1982) Oiseau RFO, 52, pp. 1-14; Szaro, R.C., Jakle, M.D., Comparison of variable circular-plot and spot-map methods in desert riparian and scrub habitats (1982) Wilson Bull., 94, pp. 546-550; Terborgh, J., (1989) Where Have All the Birds Gone?, , Princeton University Press, Princeton, New Jersey; Verner, J., Assessment of counting techniques (1985) Current Ornithol., 2, pp. 247-302; Verner, J., Ritter, L.V., Hourly variation in morning point counts of birds (1986) Auk, 103, pp. 117-124; Verner, J., (1988) Optimizing the Duration of Point Counts for Monitoring Trends in Bird Populations, , U. S. Department of Agriculture, Forest Service. Pacific Southwest Forest Range Experimental Station, Res. Note PSW-395; Whitcomb, R.F., Robbins, C.S., Lynch, J.F., Whitcomb, B.L., Klimkiewicz, M.K., Bystrak, D., Effects of forest fragmentation on avifauna of the eastern deciduous forest (1981) Forest Island Dynamics in Man-dominated Landscapes, pp. 125-206. , Burgess, R. L. and Sharpe, D. M. (eds). Springer Verlag, NY; Wilson, D.M., Bart, J., Reliability of singing bird surveys: Effects of song phenology during the breeding season (1985) Condor, 87, pp. 69-73. },
    ABSTRACT = { Useful sampling guidelines have recently been provided to improve the precision of bird population parameter estimates from point count data. Less attention has been given, however, to the issue of accuracy or completeness of counts at each sampling point. While it may not be critical in studies that compare average counts among study plots, completeness of counts at the level of individual points may pose several problems in studies that assess relationships between response variables (species' occurrence or abundance) and explanatory variables (vegetation structure, size and isolation of the fragment, proportion of interior habitat) on a point by point basis. Reliability of models in such studies is greatly dependent on the accuracy of counts at each point. We examined how bias of incomplete counts could be minimised through refinements of the point-count method. Six forest types of the northeastern deciduous forest in Quebec (Canada) were intensively surveyed during an entire breeding season. Census performances of the point-count method for measuring species richness at individual points were assessed by resampling the original data set for a simulated census protocol of two visits at a point. Effects of daily variation, time of season, time of day, and count duration were tested. Census performances of counts conducted the same day were significantly poorer than counts from different days. Census performances were influenced by the time of season during which counts were conducted. When pooled across habitats, census performances for counts that combined visits at the beginning and at the end of the breeding season were significantly better than counts that were concentrated in either one of these periods. The 05:00 to 08:30 morning period yielded the best results for five of the six habitats. Census performances in open field were, however, significantly better during the first sampling period (04:30), suggesting that bird censuses in open habitats could be initiated before sunrise. Longer counts (25 and 20 min) greatly improved species richness estimates at a point. For studies that focus on comparisons at the scale of individual points, longer counts are preferable to short counts (15 and 10 min). We stress the importance of the scale (study plots or individual points) at which statistical analyses of point count data are conducted in the decision-making process of point count sampling procedures. },
    KEYWORDS = { census performance assessment population modeling sampling bias },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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