Generating unbiased estimates of burrowing seabird populations ...
Maximising survey efficiency can help reduce the trade-off between spending limited conservation resources on identifying population changes and responding to those changes through management. Burrow-nesting seabirds are particularly challenging to survey because nests cannot be counted directly. We...
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| Format: | Dataset |
| Language: | English |
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Dryad
2022
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| Online Access: | https://dx.doi.org/10.5061/dryad.sn02v6x2d https://datadryad.org/stash/dataset/doi:10.5061/dryad.sn02v6x2d |
| Summary: | Maximising survey efficiency can help reduce the trade-off between spending limited conservation resources on identifying population changes and responding to those changes through management. Burrow-nesting seabirds are particularly challenging to survey because nests cannot be counted directly. We evaluated a stratified random survey design for generating unbiased population estimates simultaneously for four petrel species nesting on Macquarie Island, Australia, where the survey cue, burrow entrances, is similar for all species. We also compared the use of design-based and model-based analyses for minimising uncertainty in estimates. We recorded 2,845 Antarctic Prion burrows, 306 White-headed Petrel burrows and two Blue Petrel burrows while distance-sampling along 154 km of transects. For Blue Petrels and Grey Petrels, we completed nocturnal searches along a further 71 km and searched 249 km of tracks during follow-up ground searches. We failed to generate unbiased population estimates for two rare and ... : Data are supplied as an .RData file with an .Rmd file that will run analyses in RStudio. ... |
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