Full TGIF Record # 132910
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Web URL(s):https://academic.oup.com/ee/article/36/6/1494/506126/Estimating-Acridid-Densities-in-Grassland-Habitats
    Last checked: 02/17/2017
    Access conditions: Item is within a limited-access website
Publication Type:
i
Refereed
Author(s):Badenhausser, I.; Amouroux, P.; Bretagnolle, V.
Author Affiliation:Badenhausser and Amouroux: Institute National de la Recherche Agronomique-Unité de Génétique et d'Amélioration des Plantes Fourrag^D`res, Laboratoire de Zoologie, Lusignan, France; Bretagnolle: Centre d'Etudes Biologiques de Chizé-Centre National de la Recherche Scientifique, Beauvoir sur Niort, France
Title:Estimating acridid densities in grassland habitats: A comparison between presence-absence and abundance sampling designs
Section:Sampling
Other records with the "Sampling" Section
Source:Environmental Entomology. Vol. 36, No. 6, December 2007, p. 1494-1503.
# of Pages:10
Publishing Information:College Park, MD: Entomological Society of America
Keywords:TIC Keywords: Acrididae; Population dynamics; Sampling; Gomphocerinae; Grasshoppers; Distribution patterns
Abstract/Contents:"Sampling methods to estimate acridid density per surface area unit in grassland habitats were compared using presence-absence data and count data. Sampling plans based on 6 yr of surveys were devised to estimate the density of Chorthippus spp., Euchorthippus spp., and Calliptamus italicus L. These acridids represented >90% of species in the study area. Sampling plans based on count data provided a reasonable tool when densities were >1/m2 and when the level of precision was 0.20-0.30. A binomial sampling plan can be used to estimate C. italicus density with a level of precision ‚Č•0.28. Sampling characteristics, i.e., estimated mean, actual precision, and sample size, were established on validation data sets with bootstrapping analysis. Sampling costs were also calculated according to density-dependent functions. Comparison between binomial sampling and enumerative sampling of C. italicus showed that binomial sampling required less time than enumerative sampling when densities were ‚ȧ2/m2 and when fixed precision was >0.35. Plot area had no significant effect on sample variances of counts."
Language:English
References:44
Note:Figures
Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Badenhausser, I., P. Amouroux, and V. Bretagnolle. 2007. Estimating acridid densities in grassland habitats: A comparison between presence-absence and abundance sampling designs. Environ. Entomol. 36(6):p. 1494-1503.
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Web URL(s):
https://academic.oup.com/ee/article/36/6/1494/506126/Estimating-Acridid-Densities-in-Grassland-Habitats
    Last checked: 02/17/2017
    Access conditions: Item is within a limited-access website
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