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Time of Photo-Capture to estimate abundance and Spatial Distribution of Tigers

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Kolkata, May 22, 2017: A new method developed by experts incorporates the time of the photo-capture to estimate abundance and spatial distribution of tigers and helps represent data closer to reality, a statement said on Monday.

Seventy percent of wild tigers are concentrated in less than six percent of remaining habitats worldwide. Science-based management is critical for tiger conservation. Spatial capture-recapture (SCR) model analysis is often used to estimate tiger abundance.

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A new study led by Robert Dorazio of the United States Geological Survey, and co-authored by Ullas Karanth, Wildlife Conservation Society Director for Science in Asia, exploits all information provided by the SCR data, obtained using continuous-time recorders i.e. camera-traps.

Dates and times of animal detections are fundamental considerations to designing and implementing a conservation strategy.

Traditionally time-data is discarded during analysis despite availability of the information in camera-trap data.

The new model estimates the spatial distribution and abundance of animals by making full use of location of photo-capture data and time of photo-capture data – which is a significant advance from traditional SCR analysis which uses only location of photo-capture data.

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Dorazio said: “Modeling photo-capture times of tigers and other large carnivores uses all of the information in the data and gives us a chance to learn more about the behaviors and movements of these animalsa” information that is crucial to their conservation.”

“We are now able to exactly incorporate the time of capture into the data analysis. This gives us more power to mimic nature in the sense of how tigers actually get ‘trapped’ in cameras, and how their movement, behavior, and space-use relate to time. This is a significant advance,” Karanth said.

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The scientists illustrated this model by analysing spatial and temporal patterns evident in the camera-trap detections of tigers living in and around Nagarahole Tiger Reserve in Karnataka.

The study is published in the current issue of PLOS ONE journal. (IANS)

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‘Golmaal Again’ cast to spread word about tiger conservation

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Golmaal again team have come forward for tiger conservation
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New Delhi, Sep 28 : The team of “Golmaal Again”, apart from Taapsee Pannu and Rana Daggubati, will sensitise people about the need for tiger conservation.

Rohit Shetty, director of “Golmaal Again”, and the film’s actors Ajay Devgan and Parineeti Chopra have come on board for “Mission Big Cat”, a new season of programming dedicated to big cats, including lions, leopards and tigers. It begins on Animal Planet on October 2.

The celebrities will feature in a campaign for the programme.

Zulfia Waris, Vice President – Premium and Digital Networks, Discovery Communications India, said: “‘Mission Big Cat’ is a not just a programming line-up, it is an attempt to make people understand how big cats live and how we can save them. We will showcase programming that enlightens viewers about the behaviour, predatory skills, family life and issues related to conservation of big cats.”

The six-week-long programming line-up, which ends on November 12, includes titles such as ‘Snow Leopards of Ladakh’, ‘Looking for Sultan’, ‘Decoding the Man-Eater of Sundarbans’, ‘Amur Tiger’, ‘Cheetahs against all odds’, ‘White Lions Born Wild’ and ‘Last Lion of Liuwa’.

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