I am saddened to hear the loss of Mark in such a tragic accident. I worked with Mark when he was visiting professor in Edinburgh back in the 1980s. Discussions with Mark were always such a joy and were always inspirational. Above all he was a thoughtful and caring person. I have fond memories of him which I will retain. .

Known Mark for past six years and became very good friend. Mark was the most interesting man in our life and always interested to find out how our whole family doing. We will dearly miss him. Our condolences to Jan, Clare and Lachlan.

I was shocked and saddened to hear about Mark's tragic accident. My memory of Mark is of an incredibly kind and caring man who was so welcoming and a wonderful support to our family when we arrived in Australia as migrants over 20 years ago. Mark also introduced us to the beauty of the Australian bush and I treasure the appreciation that he passed on to us with such knowledge and passion. My heart goes out Janet, Clare and Lachlan.

I was shocked and saddened to hear of Mark's tragic accident. I remember Mark as a kind and caring man who was a wonderful support to our family when we arrived as migrants over 20 years ago. I also treasure the love of the Australian bush which Mark passed on to me with such passion. My heart goes out to Janet, Clare and Lachlan.

When Nicky and I first arrived in Sydney in 1987, I went to UNSW on the second day and met with Mark to ask for doctoral study possibilities. He was exceptionally friendly and helpful to someone who had just migrated to this new country. After visiting some other academics, I unequivocally (one of Mark’s favourite words which I previously did not know) decided to study under his supervision. Since then, I always considered Mark as my second father/older brother. He was also the witness for Gonca, my current wife, at our marriage ceremony in 1999. Mark is the person in my life who taught me ‘Australianism’. The gum trees, native animals, introduced species, politics, wine, ethical behaviour, and most memorably, the ‘red’ Uni-ball pen in corrections of drafts, which at times looked like blood all over. As Newton wrote ‘If I have seen further, it is by standing on the shoulders of giants’; you were my giant Mark. And I will make sure my offsprings know this well. My deepest condolences to Jan, Clare and Lachlan. You will always have a wonderful partner/father in your memories.

When Nicky and I first arrived in Sydney in 1987, I went to UNSW on the second day and met with Mark to ask for doctoral study possibilities. He was exceptionally friendly and helpful to someone who had just migrated to this new country. After visiting some other academics, I unequivocally (one of Mark’s favourite words which I previously did not know) decided to study under his supervision. Since then, I always considered Mark as my second father/older brother. He was also the witness for Gonca, my current wife, at our marriage ceremony in 1999. Mark is the person in my life who taught me ‘Australianism’. The gum trees, native animals, introduced species, politics, wine, ethical behaviour, and most memorably, the ‘red’ Uni-ball pen in corrections of drafts, which at times looked like blood all over. As Newton wrote ‘If I have seen further, it is by standing on the shoulders of giants’; you were my giant Mark. And I will make sure my off-springs know this well. My deepest condolences to Jan, Clare and Lachlan. You will always have a wonderful partner/father in your memories.

Mark was my mentor for twelve years and friend for twice that. I am deeply saddened by his passing. My condolences to Jan, Clare and Lachlan. My thoughts are with his family and all those close to him from the University community.