Saigas on the brink: Multidisciplinary analysis of the factors influencing mass mortality events by Kock, R, Orynbayev, M, Robinson, S, Zuther, S, Singh, N, Beauvais, W, Morgan, E, Kerimbayev, A, Khomenko, S, Martineau, H, Rystaeva, R, Omarova, Z, Wolfs, S, Hawotte, F, Radoux, J, Milner-Gulland, E