Data from: Tritrophic interactions at a community level: effects of host-plant species quality on bird predation of caterpillars

 

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Title Focal herbivore final mass 04-08
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Description This excel file contains data on the final mass of 7 focal lepidopteran species reared on the 8 focal tree species of this study. These data were collected over 5 years (2004-2008) from field-sampled caterpillars that were subsequently reared in the laboratory on wild-harvested leaves from the same tree species from which they were sampled. These data were analyzed to quantify variation in host-plant quality among the 8 tree species.
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Title Bird exclusion on gen caterpillars 08-09
Downloaded 57 times
Description This Excel file contains the data from a field experiment evaluating the effect of bird exclusion on the density of generalist caterpillar species. The experiment was conducted over a 3-week caterpillar sampling period period in each of 2 years (2008, 2009). 2008 included 2 additional weeks of sampling (1 and 5) and these were used to obtain an independent estimate of caterpillar density per tree species. The spatial design included 6 complete blocks of 8 tree species at each of 3 field sites in each year. Note that the block identity number at each site was not necessarily consistent from year, thus a unique block2 column is given to designate block identity. Density of generalist caterpillars was calculated for each branch or sapling, designated as bagged or unbagged to indicate the bird exclusion treatment. Density is calculated as the number of generalist caterpillars divided by the estimated total leaf area of the branch or sapling. Total leaf area was originally calculated in square cm, based on the the number of leaves multiplied by the average leaf area from a sample of approximately 10 leaves from each branch.
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When using this data, please cite the original publication:

Singer MS, Farkas TE, Skorik CM, Mooney KA (2012) Tritrophic interactions at a community level: effects of host-plant species quality on bird predation of caterpillars. The American Naturalist 179(3): 363-374. http://dx.doi.org/10.1086/664080

Additionally, please cite the Dryad data package:

Singer MS, Farkas TE, Skorik CM, Mooney KA (2012) Data from: Tritrophic interactions at a community level: effects of host-plant species quality on bird predation of caterpillars. Dryad Digital Repository. http://dx.doi.org/10.5061/dryad.15535rh1
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