K. Ullas Karanth
= K. Ullas Karanth
{c}
<K. Ullas Karanth> developed a photographic <capture-recapture model> approach for estimating <tiger> populations. A 1995 study used repeated <camera trap> sampling in Nagarahole, recognizing individual <tigers> across photographs instead of equating the photograph count with the number of animals.<Estimating tiger Panthera tigris populations from camera-trap data using capture-recapture models by K. Ullas Karanth>[Abstract: photographic capture histories]{ref}
The study reported $31$ photographic captures of $10$ individuals across nine sampling occasions. A model allowing animals to differ in capture probability was appropriate for those data.<Estimating tiger Panthera tigris populations from camera-trap data using capture-recapture models by K. Ullas Karanth>[Abstract: sample counts and individual heterogeneity]{ref}
The count of ten distinct photographed <tigers> and an estimate of the underlying population answer different questions. Repeated sightings identify recaptures, while unseen individuals require inference. Variation in how readily animals pass a <camera trap> matters even when their identities can be recognized accurately.
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{title=<K. Ullas Karanth>}
{description=Portrait linked from the https://www.catsg.org/team/k.-ullas-karanth[IUCN/SSC Cat Specialist Group profile of K. Ullas Karanth].}
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