Package: carcass 1.7

carcass: Estimation of the Number of Fatalities from Carcass Searches

The number of bird or bat fatalities from collisions with buildings, towers or wind energy turbines can be estimated based on carcass searches and experimentally assessed carcass persistence times and searcher efficiency. Functions for estimating the probability that a bird or bat that died is found by a searcher are provided. Further functions calculate the posterior distribution of the number of fatalities based on the number of carcasses found and the estimated detection probability.

Authors:Fraenzi Korner-Nievergelt, Ivo Niermann, Oliver Behr, Matthew A. Etterson, Robert Brinkmann, Pius Korner, Barbara Hellriegel, Tobias Roth, Manuela M. P. Huso, Dan Dalthorp

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carcass.pdf |carcass.html✨
carcass/json (API)

# Install 'carcass' in R:
install.packages('carcass', repos = c('https://fraenzi.r-universe.dev', 'https://cloud.r-project.org'))

Peer review:

Bug tracker:https://github.com/fraenzi/carcass/issues

Datasets:
  • batdist - Distribution of bat carcasses below wind turbines
  • persistence - Times until removal for brown mice carcasses
  • searches - Data of a searcher efficiency trial

On CRAN:

2.93 score 17 scripts 275 downloads 13 exports 15 dependencies

Last updated 1 years agofrom:084df950e1. Checks:OK: 1 NOTE: 6. Indexed: yes.

TargetResultDate
Doc / VignettesOKOct 26 2024
R-4.5-winNOTEOct 26 2024
R-4.5-linuxNOTEOct 26 2024
R-4.4-winNOTEOct 26 2024
R-4.4-macNOTEOct 26 2024
R-4.3-winNOTEOct 26 2024
R-4.3-macNOTEOct 26 2024

Exports:CIettersonestimateNettersonEq14ettersonEq14v1ettersonEq14v2integrate.persistencepericksonpersistence.probphusopkornerposteriorNsearch.efficiencyshapeparameter

Dependencies:abindarmbootcodaexpmlatticelme4MASSMatrixminqanlmenloptrRcppRcppEigensurvival

Readme and manuals

Help Manual

Help pageTopics
Estimation of the Number of Fatalities from Carcass Searchescarcass-package carcass
Distribution of bat carcasses below wind turbinesbatdist
Confidence interval for the functions ettersonEq14, ettersonEq14v1 and ettersonEq14v2CIetterson
Estimation of number of killed animals based on carcass searches and estimates for detection probabilityestimateN
Equation 14 of Etterson (2013) Ecological Applications 23, 1915-1925ettersonEq14
Equation 14 of Etterson (2013) Ecological Applications 23, 1915-1925, adapted so that persistence probability and searcher efficiency can vary with calender dateettersonEq14v1
Equation 14 of Etterson (2013) Ecological Applications 23, 1915-1925, adapted so that persistence probability and searcher efficiency can vary with age of the carcassettersonEq14v2
Integrate persistence probability over the discrete time intervals (e.g. days) to account for constant arrival of carcassesintegrate.persistence
Carcass detection probability acording to Erickson et al. 2004perickson
Times until removal for brown mice carcassespersistence
Estimates carcass persistence probability based on carcass removal experiment datapersistence.prob
Carcass detection probability acording to Huso 2010phuso
Carcass detection probability acording to Korner-Nievergelt et al. 2011pkorner
Posterior distribution of the number of fatalities based on the number of carcasses found and the probability of finding a carcass.posterior.N posteriorN
Estimates detection probability per person and visibility classes using a binomial modelsearch.efficiency
Data of a searcher efficiency trialsearches
Shapeparameters of a beta-distribution from the mean, the lower and upper limit of the 95% confidence or credible intervalshapeparameter