UC Research Medal Winner 2016 - Distinguished Professor David Schiel: "We鈥檙e trying to anticipate the impact of different levels of human usage or natural forces and factors on the function of our highly diverse ecosystems.鈥
UC Distinguished Professor David Schiel has become familiar to many in the Kaik艒ura area through his work on how marine systems respond and recover from cataclysmic upheaval and other impacts. Two decades of small scale experiments had resulted in a wealth of knowledge to predict tipping points for parts of the Kaik艒ura coastal reef ecosystem. 鈥淭here are stages at which there are tipping points in ecosystems. There are many stressors, for example, sediments that run off the land and smother algal beds, people walking on algal beds covering a coastal reef, the impact of wave forces on habitats in heavy seas, or over-harvesting of various species.鈥
Since the early 1990s Professor Schiel has supervised over 60 UC postgraduate students, many of them focusing on diversity function in their theses.
鈥淲e think about things on an experimental scale; for example on a scale of 10 to 20 people walking over a portion of algae-covered reef, it takes a year or more to recover. If you put 1000 people over it, what鈥檚 going to happen? We鈥檙e trying to anticipate the impact of different levels of human usage or natural forces and factors on the function of our highly diverse ecosystems.鈥
Response to the Kaik艒ura earthquake
In the space of two minutes, on 14 November 2016, the Kaik艒ura earthquake propelled over 100 km of coastal reef into the open air. In the days immediately following the Kaik艒ura earthquake a series of factors came into play which led to a rapid response by Professor Schiel and his academic, industry and research network. His marine ecology team and former students, who now work in research institutes, were able to arrive quickly and, familiar with the focus of his research and methods, get work under way. By 16 November the team was in the field and continued to work daily until Christmas.
鈥淓verything was still there; the seaweeds and associated organisms were still attached. So we went out and assessed the diversity of the reefs, what was dead and dying 鈥 we counted the crayfish, the p膩ua, the seaweed and other invertebrates. We have this mini time series now of what was left high and dry, what was there on those reefs at the time of upheaval. This means we鈥檒l be able to tell very specifically how things change through time.鈥
The impact on the p膩ua industry wasimmediately obvious. A video from the p膩ua industry shown to Professor Schiel showed about ten tonnes of p膩ua were left exposed on uplifted reefs.
鈥淭he solution isn鈥檛 simple. When you put p膩ua back into water, where are they going to go? They need rocky reefs. They also need biogenic habit because they eat seaweed 鈥 they鈥檙e herbivores.
鈥淭he thrust of what we鈥檙e planning to do in the recovery research is not just locating where there is rocky reef remaining underwater, but more importantly, what鈥檚 on it and how the biogenic habitat will regenerate.鈥
Connecting with the fishing industry and the wider community is at the core of his team鈥檚 work.
鈥淲e learned from Rena [MV Rena oil spill off Tauranga, 2011], to go out and speak to people, work with the r奴nanga and the communities 鈥 they have perspectives, issues to air, various apprehensions, and want to know what is going on.
鈥淛ust knowing that there is a scientist who has a history of research in their area, and can tell them something about the likelihood of recovery and that someone is trying to do something and understand it, makes a really big difference.鈥 Meanwhile, Professor Schiel is in negotiations to undertake further recovery research with the Ministry for Primary Industries | Manat奴 Aha Matua, in partnership with the Cawthron Institute in Nelson and NIWA.
Research Medal 2016
Professor Schiel was awarded the 九州影院 Research Medal in 2016. He is widely acknowledged as one of New Zealand鈥檚 preeminent marine scientists. He is one of the few marine scientists who is a Fellow of the Royal Society of New Zealand, and was awarded the title of Distinguished Professor by UC in 2015. In his 26 years at UC, Professor Schiel has worked on a wide range of topics in marine science, with outstanding and internationally recognised contributions in aquaculture, fisheries, kelp forest ecology, and the functioning of near-shore ecosystems.
He was co-awarded New 九州影院Science Communicator of the Year in 2015 and was one of two scientists charged with coordinating $1 million of nationally important research on the impacts and recovery of the MV Rena oil spill off Tauranga in 2011. He has brought around $18 million in external research funding to the University.
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