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BirdLifeInternational / track2kba

An R package that facilitates the identification of animal aggregations of potential conservation significance based on individual tracking data. Key functions include utilities to identify and summarise individual foraging trips, estimate utilisation distributions, and overlay distributions to identify important aggregation areas.
GNU Lesser General Public License v3.0
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findKBA: Take max N individuals using final boundary area #19

Closed MartinBeal closed 2 years ago

MartinBeal commented 5 years ago

Issue raised by Maria, concerning the estimation of the upper range of the % of the population using the delineated KBA.

In the past the maximum percent. value of overlapping individuals within the KBA was used as the upper bound. This will underestimate the TOTAL number of individuals using the KBA area, if individual's core ranges are mutually exclusive.

Need to add a calculation of the maximum unique number of individuals using the final KBA boundary, to the findKBA() function.

MartinBeal commented 5 years ago

Suggestion from Steffen's handwritten note:

ind %over% IBA %>% filter(!is.na()) %>% mutate( Nind = n_distinct(ID))