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Journal of Australian Energy Producers
RESEARCH ARTICLE (Non peer reviewed)

Ecological engineering for climate mitigation and adaptation—a case study for the North West Shelf*

P. Wheen A , S. Kim A , M. Lawrence A and J. Ridley A
+ Author Affiliations
- Author Affiliations

Ocean Nourishment Corporation.

The APPEA Journal 51(2) 685-685 https://doi.org/10.1071/AJ10065
Published: 2011

Abstract

This paper introduces the Australian-developed Ocean Nourishment technology, as well as the science, its regulation, and its potential commercial application for the North West Shelf.

Ocean nourishment is a form of ecological engineering, designed to transfer carbon from the ocean's sunlit surface zone to the largest carbon sink on the planet: the ocean. It is a scaleable and economical form of bio-mimicry; simulating the ocean's natural biological processes. Nourishing the surface ocean with macronutrients increases the movement of atmospheric CO2 into the deep-ocean carbon store.

Short lifecycle microscopic plants—which are prolific carbon consumers—use sunlight to process the added nutrients. This additional marine productivity leads to reduced CO2 levels in both the upper ocean and in the atmosphere. Dispersing nitrogen alone allows the potential long-term (1,000 years) removal of one tenth (0.8 Gt carbon/annum) of present anthropogenic emissions.

In addition to carbon sequestration, there is a desirable by-product of the process. The increased marine productivity will lead to increased fish stocks, which will assist in feeding the world's human population. Individual licenced sites would be capable of sequestering 5–8 Mt of CO2 at $25–35 per tonne. This is estimated to produce an additional harvest of 300,000 tonnes of fish each year.

The path to commercialisation for such a promising technology with global reach and untried application requires focussed scientific application. Establishing revenue streams for carbon sequestration or fisheries enhancement is complex. International regulation is being addressed by the LondonConvention/London Protocol of the International Maritime Organisation.

Peter Wheen, BE (Hons), FIEAust, MAICD, has more than 25 years of engineering management experience and construction expertise in both private and government sectors. Peter has been responsible for planning and implementation technically complex, award winning, multi-disciplinary, engineering infrastructure projects in the USA, Australia and southeast Asia. His particular focus is entrepreneurial approaches to innovation and sustainability in project leadership and delivery. He is a founding director of ONC and has been chairman of the board since 2004. He is also a trustee on the board of the not-for-profit Ocean Nourishment Foundation.

Shaun Kim, BSc (marine science), MAppSc (coastal management), is a scientist experienced in physical and biogeochemical oceanography and computer modelling. He joined ONC's research and development team in 2007. Shaun's research includes assessing the impacts of nutrient cycling on primary and secondary production and he has helped develop numerical models of these processes in the pelagic ocean environment.

Martin Lawrence, BSc (Hons), MSc, PhD, has many decades of experience in research and management in both science and technology. He worked for nine years for the Comprehensive Nuclear Test Ban Treaty Organisation, first overseeing the establishment of a monitoring system for the global ocean, and then coordinating the operation and maintenance of the (four technology) global network. Earlier, he served as the scientific advisor to the Royal Australian Navy. In recent years, he has concentrated on the science and international negotiations related to the Ocean Nourishment process.

John Ridley, BSc (Hons), MSc, is an environmental scientist with 21 years of practical experience in environmental management across three continents. He specialises in biological systems, sustainable resource management and environmental assessment and planning. John was appointed managing director of Ocean Nourishment Corporation (ONC) in 2007 and has been on the board of directors since 2004. He is leading the ONC charge to get oceans considered fully in the wider international climate and food security policy debates.


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