Estimating Otter Numbers Using Spraints: Is It Possible?

Table 4

Active sprainting points on Ardnish.

Month	Active sprainting points	Otter numbers
October 2011	25	3
November 2011	21	3
December 2011	11	3
January 2012	19	3
February 2012	10	3
March 2012	7	2
April 2012	12	3
May 2012	21	3
June 2012	32	3
July 2012	13	3
August 2012	20	2
September 2012	37	1

No correlation was found between active sprainting points and otter activity (𝑟=−0.38, 𝑛=12, and 𝑃<0.05). Using the Pearson Product Correlation Coefficient only 12.9% of spraint numbers could explain changes in otter numbers.