Felids Interactions - Interspecific Conflicts

[Shadow]

(10-02-2019, 01:08 AM)Pckts Wrote:

(10-02-2019, 12:57 AM)Pckts Wrote:

(10-02-2019, 12:39 AM)Shadow Wrote: This is study/report, which mentions between 1985-1996 7 tigers killed by bears and 4 tigers killed by wild boars.

Conducted by: E. N. Matyushkin, D. G. Pikunov, Y. M. Dunishenko, D. G. Miquelle, I. G. Nikolaev, E. N. Smirnov, G. P. Salkina, V. K. Abramov, V. I. Bazylnikov, V. G. Yudin and V. G. Korkishko.
https://pdfslide.net/documents/amur-tiger-census-1996.html

Not something to happen too often, but time to time.

Unfortunately any details on the accounts aren't provided 

 
"Table 10. Summary of tiger mortalities during past 10 years, based on information supplied by counters during the 1995-1996 winter census in Khabarovsk and Primorye Krais"

It is just an estimate, here is how they came to that conclusion

"The information presented in Table 10 is based on responses of fieldworkers to the question in the field diary: "Do you know any cases of tiger deaths?". We believe this summary is far from complete. More than 90% of the fieldworkers did not answer the question, or gave information that was already generally well-known. According to other calculations, an average of 40 to 50-70 tigers could have been killed annually (Pikunov 1994, Nikolaev and Yudin 1993). This estimate,together with natural losses, may exceed the reproductive potential of the population"

This is also most likely why they show the same number for mortality from Bears, Tigers and Starvation from that area and in both time frames.

That doesn´t look like "just an estimate" for me, when I read it. I see it like this:
"The information presented in Table 10 is based on responses of fieldworkers to the question in the field diary: "Do you know any cases of tiger deaths?". We believe this summary is far from complete. More than 90% of the fieldworkers did not answer the question, or gave information that was already generally well-known."

Then this is estimation part:
"According to other calculations, an average of 40 to 50-70 tigers could have been killed annually (Pikunov 1994, Nikolaev and Yudin 1993). This estimate,together with natural losses, may exceed the reproductive potential of the population"

So that table seems to be ok, but there might be some more cases since not all replied.

Then estimate is related to those "other calculations".

That is how I understood that, in estimations figures are usually presented like "approximately" or something like that. Not in the way as in that table with clear numbers. Reply