Anthony Cheshire

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Anthony Cheshire is a scientist and academic living and working in South Australia. Over his professional career he has served as the Head, Department of Botany in the University of Adelaide (1994-1998), as the Chief Scientist of SARDI (South Australian Research and Development Institute) Aquatic Sciences division (2000-2004) and as Director Research and Development of SARDI (2005). Over the course of his career his scientific research has focussed on understanding and measuring human impacts on the natural environment with a particular focus on the development of methods to assess the health and anthropogenic impacts in coastal marine environments.

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Earlier in his career Anthony Cheshire worked as a research scientist at the Australian Institute of Marine Science (AIMS 1986-1989) and as an Academic in the Department of Botany at the University of Adelaide (1989-2000). In more recent years he has moved into the private sector although he has held numerous Adjunct, Affiliate and Advisory roles with South Australian Universities and Government Departments (including Adjunct and Affiliate appointments as Professor with both the Flinders University of South Australia and with the University of Adelaide).

His research work has spanned a number of key areas and initiatives including the ecology and ecophysiology of temperate and tropical macro-algae, [1] the ecophysiology of tropical corals and sponges [2] and the impact of aquaculture on coastal systems with a significant focus on the development of the state's Southern bluefin tuna seacage aquaculture sector. [3] [4] He has also participated in various scientific expeditions one of which resulted in the discovery of 8 new species of jellyfish collected from the Great Australian Bight [5] (including the eponymous Amphinema cheshirei [6] which was named after Anthony Cheshire who led a research expedition to the Nuyts archipelago in 2002). [5] [7]

In 2009 Anthony Cheshire led an international team of coastal scientists in a project that developed methods to assess marine litter (marine debris) in both coastal and open ocean environments. This work, funded by the United Nations Environment Programme (UNEP) in collaboration with the International Oceanographic Commission (IOC), has been published and forms the backbone of many national and trans-national marine debris survey programs. [8]

Ecology and ecophysiology of marine macro-algae

Cheshire and his students worked across a range of macro-algal systems including studies on the southern bull-kelp (Durvillaea potatorum) as well as numerous studies on the production ecology of kelp and fucoid dominated systems in South Australia. [9] This work involved the development of novel technologies for quantifying the in-situ photosynthetic rates by macro-algal including both mixed-fucoid and turf algal communities. [1] In addition the work involved assessing anthropogenic impacts on coastal macro-algal communities from impacts such as beach sand replenishment dredging [10] and degraded coastal water quality. [11]

In more recent years Cheshire has focussed on the improved utilisation of macro-algal resources including the challenges in developing a macro-algal industry in Australia. [12]

Southern bluefin tuna research

A substantial proportion of Cheshire's research work focused on the environmental impacts of tuna farming in Spencer Gulf. Subjects included early investigations of the environmental effect of tuna seacages, [13] measurement and modeling of nitrogen loads, [14] [15] sediment geochemistry, [16] developing a methodology for assessing seabed impacts, [17] nutrient influence on the seabed, [18] waste mitigation, [19] oxygen availability in sea cages, [20] net fouling communities and synthetic anti-fouling treatments, [21] [22] and regional monitoring systems. [23] He also researched means of lowering the cost of environment assessments for the tuna aquaculture sector [24] [25] and helped improve net designs to allow Great white sharks that enter sea-cages by leaping or biting their way in to be released without harm. [26] [27] [28]

Related Research Articles

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Aquaculture, also known as aquafarming, is the controlled cultivation ("farming") of aquatic organisms such as fish, crustaceans, mollusks, algae and other organisms of value such as aquatic plants. Aquaculture involves cultivating freshwater, brackish water and saltwater populations under controlled or semi-natural conditions, and can be contrasted with commercial fishing, which is the harvesting of wild fish. Mariculture, commonly known as marine farming, is aquaculture in seawater habitats and lagoons, as opposed to freshwater aquaculture. Pisciculture is a type of aquaculture that consists of fish farming to obtain fish products as food.

<span class="mw-page-title-main">Mariculture</span> Cultivation of marine organisms in the open ocean

Mariculture or marine farming is a specialized branch of aquaculture involving the cultivation of marine organisms for food and other animal products, in enclosed sections of the open ocean, fish farms built on littoral waters, or in artificial tanks, ponds or raceways which are filled with seawater. An example of the latter is the farming of marine fish, including finfish and shellfish like prawns, or oysters and seaweed in saltwater ponds. Non-food products produced by mariculture include: fish meal, nutrient agar, jewellery, and cosmetics.

The National Pollutant Inventory (NPI) is a database of Australian pollution emissions managed by the Australian Commonwealth, State and Territory Governments. A condensed version of the information collected is available to the public via the Department’s website.

<span class="mw-page-title-main">Southern bluefin tuna</span> Species of fish

The southern bluefin tuna is a tuna of the family Scombridae found in open southern Hemisphere waters of all the world's oceans mainly between 30°S and 50°S, to nearly 60°S. At up to 2.5 metres and weighing up to 260 kilograms (570 lb), it is among the larger bony fishes.

<span class="mw-page-title-main">Integrated multi-trophic aquaculture</span> Type of aquaculture

Integrated multi-trophic aquaculture (IMTA) provides the byproducts, including waste, from one aquatic species as inputs for another. Farmers combine fed aquaculture with inorganic extractive and organic extractive aquaculture to create balanced systems for environment remediation (biomitigation), economic stability and social acceptability.

<span class="mw-page-title-main">Wild fisheries</span> Area containing fish that are harvested commercially

A wild fishery is a natural body of water with a sizeable free-ranging fish or other aquatic animal population that can be harvested for its commercial value. Wild fisheries can be marine (saltwater) or lacustrine/riverine (freshwater), and rely heavily on the carrying capacity of the local aquatic ecosystem.

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<span class="mw-page-title-main">Aquaculture in Australia</span>

Aquaculture in Australia is the country's fastest-growing primary industry, accounting for 34% of the total gross value of production of seafood. 10 species of fish are farmed in Australia, and production is dominated by southern bluefin tuna, Atlantic salmon and barramundi. Mud crabs have also been cultivated in Australia for many years, sometimes leading to over-exploitation. Traditionally, this aquaculture was limited to pearls, but since the early 1970s, there has been significant research and commercial development of other forms of aquaculture, including finfish, crustaceans, and molluscs.

<span class="mw-page-title-main">Seaweed farming</span> Farming of aquatic seaweed

Seaweed farming or kelp farming is the practice of cultivating and harvesting seaweed. In its simplest form farmers gather from natural beds, while at the other extreme farmers fully control the crop's life cycle.

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<span class="mw-page-title-main">Offshore aquaculture</span> Fish farms in waters some distance away from the coast

Offshore aquaculture, also known as open water aquaculture or open ocean aquaculture, is an emerging approach to mariculture where fish farms are positioned in deeper and less sheltered waters some distance away from the coast, where the cultivated fish stocks are exposed to more naturalistic living conditions with stronger ocean currents and more diverse nutrient flow. Existing "offshore" developments fall mainly into the category of exposed areas rather than fully offshore. As maritime classification society DNV GL has stated, development and knowledge-building are needed in several fields for the available deeper water opportunities to be realized.

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Dr Hagen Heinz Stehr AO is a German-born multi-millionaire businessman, tuna fisherman and founder of the Stehr Group.

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Tuna penning is a practice used in marine aquaculture, in which smaller tuna are caught off shore and moved back to large, in-water enclosures. The pens are typically located in the relatively shallow waters of sheltered areas, such as bays or coves. Tuna penning is primarily used for Atlantic Bluefin Tuna (ABT), a highly profitable stock for the global fish market. The tuna caught for penning are typically caught between May and July by purse-seine vessels, and then transported back to pens, where they are fattened until October–January before being frozen and shipped out. While in the pens, the tuna are fed primarily fresh fish, such as sardines, squid, and mackerel. In the past decade, tuna penning has become a large sector within the fish aquaculture industry, and takes place primarily in the Mediterranean. In 2010, ABT constituted 8% of global fish exports, the majority of which was shipped to Japan. Tuna penning is regulated by the International Commission for the Conservation of Atlantic Tunas (ICCAT), and each farm is required to register both the number of tuna it has and the total capacity of the farm.

<span class="mw-page-title-main">Oceanic Victor</span> Travel and holiday companies of Australia

Oceanic Victor is an Australian privately owned company which runs marine tourism facilities on and adjacent to Granite Island, Encounter Bay, South Australia. The company's main attraction is a floating at-sea aquarium containing Southern blue fin tuna and other marine species. The facility is located within a Habitat Protection Zone of the Encounter Marine Park and opened to the public on 2 September 2017. Since 2019 it has been open intermittently while work has been undertaken on the causeway to Granite Island and owing to COVID19 restrictions in 2020. As of 2021, the attraction is in Port Lincoln where it is undergoing maintenance. It is expected to reopen in 2022 once work on the causeway is complete.

Craig Foster is the CEO of Clean Seas, an ASX-listed Australian seafood company with interests in southern bluefin tuna and yellowtail kingfish farming. He was appointed to the position in 2012 after working in the salmon farming industry in Tasmania. There he managed research and development at the state's largest salmon hatchery and also worked as the Managing Director of fish feed producer, Gibsons Ltd. In 2001, he was working for Pivot, and assisting in the development of barramundi farms in the Northern Territory.

Clean Seas Seafood Ltd is an Australian seafood production company specialising in the sea-cage aquaculture of Yellowtail kingfish. It was established by The Stehr Group in 2000, and became the first Australian company fish farming in South Australia to be listed on the ASX in 2005. The company was established by "tuna baron" Hagen Stehr, whose son Marcus remains one of the company's directors. Clean Seas has shore and sea-based fish farming facilities at Arno Bay, aquaculture leases in Fitzgerald Bay and near Port Lincoln and a processing facility at Royal Park in Adelaide. Its tuna interests were originally held by the private company Australian Tuna Fisheries Pty Ltd. Clean Seas' ambition to control and commercialise the lifecycle of the Southern bluefin tuna has not been realised.

Fish farming is a major economic contributor to South Australia's seafood sector. The most valuable species is the Southern bluefin tuna, which is caught in the wild then transferred into sea cages in southern Spencer Gulf where they are fed locally caught sardines. The second most valuable species is the Yellowtail kingfish, which is farmed near Port Lincoln and Arno Bay. A tourist venture called Oceanic Victor located in Encounter Bay allows paying customers the opportunity to swim in a sea cage with the Southern bluefin tuna and handfeed the fish. Prominent companies in the fish farming sector in South Australia include Clean Seas and Tony's Tuna International.

References

  1. 1 2 Cheshire, Anthony C.; Westphalen, Grant; Wenden, Anitra; Scriven, Leonie J.; Rowland, Brian C. (1 November 1996). "Photosynthesis and respiration of phaeophycean-dominated macroalgal communities in summer and winter". Aquatic Botany. 55 (3): 159–170. doi:10.1016/S0304-3770(96)01071-6. ISSN   0304-3770.
  2. Cheshire, A. C.; Wilkinson, C. R. (February 1991). "Modelling the photosynthetic production by sponges on Davies Reef, Great Barrier Reef". Marine Biology. 109 (1): 13–18. doi:10.1007/BF01320226. ISSN   0025-3162.
  3. Cheshire, Anthony; Volkman, John (December 2004). "Australians net benefits of sustainable fish farming". Nature. 432 (7018): 671. Bibcode:2004Natur.432..671C. doi: 10.1038/432671a . ISSN   1476-4687. PMID   15592381.
  4. Cheshire, Anthony C.; Fisheries Research and Development Corporation (Australia); University of Adelaide; South Australian Research and Development Institute, eds. (1996). Investigating the environmental effects of sea-cage tuna farming. Adelaide: The Department of Botany, University of Adelaide. ISBN   978-0-86396-314-8.
  5. 1 2 "New jellyfish species found". www.abc.net.au. 10 December 2003. Retrieved 26 May 2021.
  6. Gershwin, L. & Zeidler (2003). "Encounter 2002 expedition to the Isles of St Francis, South Australia: Medusae, siphonophores and ctenophores of the Nuyts Archipelago". Transactions of the Royal Society of South Australia. 127: 205–241, 14 pls.
  7. Gaut, Alex (6 April 2004). "The Althorpe Islands Group Visit, 2004". Marine Life Society of South Australia Inc. Retrieved 26 May 2021.
  8. Cheshire, Anthony; Ellik Adler; Barbière, Julian; Cohen, Yuval; Evans, Sverker; Srisuda Jarayabhand; Jeftic, Ljubomir; Rho-Taek Jung; Kinsey, Susan; Eng Takashi Kusui; Lavine, Ingrid; Manyara, Peter; Oosterbaan, Lex; Pereira, Marcos; Seba Sheavly (2009). "UNEP/IOC Guidelines on Survey and Monitoring of Marine Litter". doi:10.13140/RG.2.2.14734.08009.{{cite journal}}: Cite journal requires |journal= (help)
  9. Cheshire, Anthony C.; Collings, Gregory J. (1998). "Composition of Subtidal Macroalgal Communities of the Lower Gulf Waters of South Australia, with Reference to Water Movement and Geographical Separation". Australian Journal of Botany. 46 (6): 657. doi:10.1071/bt95081. ISSN   0067-1924.
  10. Anthony Cheshire, Stephen Hall, Jon N Havenhand, David J Miller (1998). Assessing the status of temperate reefs in Gulf St Vincent II: survey results. Publisher: Department of Botany, University of Adelaide, South Australia. Editor: Anthony Cheshire. ISBN 086396631 4 (vII)
  11. Connell, SD; Russell, BD; Turner, DJ; Shepherd, SA; Kildea, T; Miller, D; Airoldi, L; Cheshire, A (22 May 2008). "Recovering a lost baseline: missing kelp forests from a metropolitan coast". Marine Ecology Progress Series. 360: 63–72. doi: 10.3354/meps07526 . hdl: 2440/53109 . ISSN   0171-8630.
  12. Roos, Göran; Cheshire, Anthony; Nayar, Sasi; Clarke, Steven M.; Zhang, Wei (2019). Harnessing Marine Macroalgae for Industrial Purposes in an Australian Context: Emerging Research and Opportunities. Advances in Environmental Engineering and Green Technologies. IGI Global. doi:10.4018/978-1-5225-5577-3. ISBN   978-1-5225-5577-3.
  13. "Investigating the environmental effects of sea-cage tuna farming II - The effect of sea cages".
  14. "Dissolved nutrient release from solid wastes of Southern bluefin tuna Thunnus maccoyi aquaculture".
  15. "Preliminary model of nitrogen loads from Southern bluefin tuna aquaculture".
  16. "Sediment geochemistry in lower Spencer Gulf, South Australia - Implications for Southern bluefin tuna farming".
  17. "Investigating the environmental effects of sea-cage tuna farming I - Methodology for investigating seafloor souring".
  18. "Benthic fluxes of nitrogen and phosphorus at Southern bluefin tuna Thunnus maccoyii sea-cages".
  19. "Southern bluefin tuna aquaculture subprogram - Tuna environment subproject - Evaluation of waste composition and waste mitigation".
  20. "OXYTUNA - A model for the oxygen dynamics in a Southern bluefin tuna sea-cage system".
  21. "An investigation into the composition biomass and oxygen budget of the fouling community on a tuna aquaculture farm".
  22. "Test of an antifouling treatment on tuna fish-cages in Boston Bay, Port Lincoln, South Australia".
  23. "Towards the development of regional environmental monitoring systems to ensure sustainable development of the aquaculture industry".
  24. "Development of novel methodologies for cost effective assessment of the environmental impact of aquaculture".
  25. "Development of rapid environmental assessment and monitoring techniques for application to finfish aquaculture in South Australia".
  26. "Shark ends cat-and-mouse game with tuna". www.abc.net.au. 24 June 2003. Retrieved 26 May 2021.
  27. "Shark incident sparks aquaculture concerns". www.abc.net.au. 25 June 2003. Retrieved 26 May 2021.
  28. "The World Today - Great White shark inexplicably found in tuna cage". www.abc.net.au. Retrieved 26 May 2021.