Behavioural changes

Figure 1: Shows the results of statistical chi-square test performed in Minitab ® 15 that shows whether or not there is a significant difference between the observed activities during February 2010 footage and June 2010 footage.  Boxing, interacting and dragging food to the burrow could not be tested, as the values were too small to run a chi square test.

Isotope analysis

Figure 2: Comparison of the isotopic signatures of January 2009 and June 2010 plateau pika and yak faeces.  January yak faeces isotopic signature overlaps pika faeces.