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RESEARCH ARTICLE
Contents Vol 61(10)

Facilitating recruitment of Amphibolis as a novel approach to seagrass rehabilitation in hydrodynamically active waters

Rachel J. Wear A , Jason E. Tanner A B and Sonja L. Hoare A
+ Author Affiliations
- Author Affiliations

A SARDI Aquatic Sciences, PO Box 120, Henley Beach, SA 5022, Australia.

B Corresponding author. Email: Jason.Tanner@sa.gov.au

Marine and Freshwater Research 61(10) 1123-1133 https://doi.org/10.1071/MF09314
Submitted: 23 December 2009  Accepted: 24 April 2010   Published: 14 October 2010

Abstract

Worldwide, 29% of seagrass habitats have been lost over the past century. Compared with large-scale losses, successful restoration programs are usually only small scale (a few hectares). One area of significant seagrass loss (>5200 ha) is Adelaide, South Australia. Improvements to wastewater management have raised the possibility of rehabilitation in this area. Traditional methods of seagrass restoration are expensive and have had limited success owing to high wave energy. We investigated a range of biodegradable substrates, mostly made of hessian (burlap), to enhance Amphibolis recruitment as an alternative. After 5 weeks, 16 514 seedlings, or 157 seedlings m–2, had recruited. Survival declined over the following 12 months to 31.4%, and down to 7.2% after 3 years, in part as a result of breakdown of the hessian, and the wave-exposed nature of the sites. During the initial 12 months, above- and belowground biomass increased 2.6- and 6.4-fold, respectively. The technique may represent a non-destructive, cost-effective (<AU$10 000 ha–1) method to restore Amphibolis over large spatial scales and in areas that are hydrodynamically too active for traditional techniques, thus helping ameliorate some of the large-scale losses of seagrasses that have occurred globally.

Additional keywords: Amphibolis antarctica, A. griffithii, recruitment facilitation, restoration.


Acknowledgements

The South Australian Department for Environment and Heritage, Coast and Marine Branch (CMB) provided SARDI with financial support for this project. The authors are indebted to D. Fotheringham and H. Kirkman, who provided support throughout the length of the project and S. Seddon for her early efforts in seagrass restoration in Adelaide and advice throughout early phases of the project. We also thank G. Williams, R. Cole, A. Bloomfield, A. Eaton, B. Miller-Smith, K. Rowling, M. Theil, M. Lloyd and M. Hoare for field support and M. Roberts for laboratory assistance. S. Bryars and G. Collings provided valuable technical and statistical advice and D. Turner, G. Collings, A. Irving and two anonymous reviewers provided valuable comments on the manuscript.


References

Anderson, M. J. (2001). A new method for non-parametric multivariate analysis of variance in ecology. Austral Ecology 26, 32–46.
| Crossref | GoogleScholarGoogle Scholar | Bryars S. (2008). Restoration of coastal seagrass ecosystems: Amphibolis antarctica in Gulf St Vincent, South Australia. South Australian Research and Development Institute (Aquatic Sciences), Adelaide, Australia. Available at http://www.sardi.sa.gov.au/__data/assets/pdf_file/0010/99640/No_277_Restoration_of_Coastal_Seagrass_Ecosystems__Amphibolis_antarctica_in_Gulf_St_Vincent,_South_Australia2.pdf [verified 30 April 2010].

Bryars, S. , and Neverauskas, V. (2004). Natural recolonisation of seagrasses at a disused sewage sludge outfall. Aquatic Botany 80, 283–289.
| Crossref | GoogleScholarGoogle Scholar | Bye J. A. T., and Kämpf J. (2008). Physical oceanography. In ‘Natural History of Gulf St Vincent’. (Eds S. A. Shepherd, S. Bryars, I. Kirkegaard, P. Harbison and J. T. Jennings.) pp. 56–70. (Royal Society of South Australia: Adelaide.)

Costanza, R. , d’Arge, R. , de Groot, R. , Farber, S. , and Grasso, M. , et al. (1997). The value of the world’s ecosystem services and natural capital. Nature 387, 253–260.
| Crossref | GoogleScholarGoogle Scholar | CAS | Fonseca M. S., Kenworthy W. J., and Thayer G. W. (1998). Guidelines for the conservation and restoration of seagrasses in the United States and adjacent waters. NOAA Coastal Ocean Office, Silver Spring, MD. Available at http://www.sarasota.wateratlas.usf.edu/upload/documents/GuidelinesforConservationandRestorationinSeagrassinUS.pdf [verified 30 April 2010].

Greve, T. M. , Krause-Jensen, D. , Rasmussen, M. B. , and Christensen, P. B. (2005). Means of rapid eelgrass (Zostera marina L.) recolonisation in former dieback areas. Aquatic Botany 82, 143–156.
| Crossref | GoogleScholarGoogle Scholar | Hall M. O., Merello M., Kenworthy W. J., Berns D., Ferenc K., et al. (2006). Developing techniques to enhance the recovery rates of propeller scars in turtlegrass (Thalassia testudinum) meadows. Final report to USFWS. Florida Fish and Wildlife Conservation Commission, St Petersburg, FL. Available at http://www.seagrassgrow.org/index.php?ht=a/GetDocumentAction/i/3571 [verified 30 April 2010].

Hammerstrom, K. K. , Kenworthy, W. J. , Fonseca, M. S. , and Whitfield, P. E. (2006). Seed bank, biomass, and productivity of Halophila decipiens, a deep water seagrass on the west Florida continental shelf. Aquatic Botany 84, 110–120.
| Crossref | GoogleScholarGoogle Scholar | Hart D. (1997). Near-shore seagrass change between 1949 and 1996 mapped using digital aerial orthophotography. Metropolitan Adelaide area, Largs Bay – Aldinga, South Australia. SA Department of Environment and Natural Resources, Adelaide.

Inglis, G. J. (2000). Variation in the recruitment behavior of seagrass seeds: implications for population dynamics and resource management. Pacific Conservation Biology 5, 251–259.
Kenworthy W. J., Hammerstrom K. K., and Fonseca M. S. (2006). Scientific evaluation of a sediment fill technique for the restoration of motor vessel injuries in seagrass beds of the Florida Keys National Marine Sanctuary. NOAA/NOS/NCCOS Center for Coastal Fisheries and Habitat Research, Beaufort, NC. Available at http://floridakeys.noaa.gov/research_monitoring/scientific_evaluation.pdf [verified 30 April 2010].

Kirkman, H. (1999). Pilot experiments on planting seedlings and small seagrass propagules in Western Australia. Marine Pollution Bulletin 37, 460–467.
| Crossref | GoogleScholarGoogle Scholar | Lothian A. (1999). Application of environmental valuation in South Australia. Report of the Environmental Valuation Working Group to the Natural Resources Council. Department for Environment, Heritage and Aboriginal Affairs, Adelaide.

Marbá, N. , and Duarte, C. M. (1998). Rhizome elongation and seagrass clonal growth. Marine Ecology Progress Series 174, 269–280.
| Crossref | GoogleScholarGoogle Scholar | Paling E. I. (2008). Seagrass restoration in Western Australia: An update. In ‘Proceedings of the Second Seagrass Restoration Workshop’. (Ed. S. Murray-Jones.) pp. 60–77. (Department for Environment and Heritage: Adelaide.) Available at http://www.deh.sa.gov.au/coasts/pdfs/seagrass-restoration-workshop-report.pdf [verified 30 April 2010].

Paling, E. I. , van Keulen, M. , Wheeler, K. , Phillips, J. , and Dyhrberg, R. (2001). Mechanical seagrass transplantation in Western Australia. Ecological Engineering 16, 331–339.
| Crossref | GoogleScholarGoogle Scholar | Pattiaratchi C., Newgard J., and Hollings B. (2007). Physical oceanographic studies of Adelaide coastal waters using high resolution modelling, in-situ observations and satellite techniques – Sub Task 2 final technical report. ACWS technical report no. 20, prepared for the Adelaide Coastal Waters Study Steering Committee. School of Environmental Systems Engineering, The University of Western Australia, Perth. Available at http://www.epa.sa.gov.au/xstd_files/Water/Report/acws20.pdf [verified 23 July 2010].

Peterson, B. J. , Rose, C. D. , Rutten, L. M. , and Fourqurean, J. W. (2002). Disturbance and recovery following catastrophic grazing: studies of a successional chronosequence in a seagrass bed. Oikos 97, 361–370.
| Crossref | GoogleScholarGoogle Scholar | Seddon S., Miller D., Venema S., and Tanner J. E. (2004). Seagrass rehabilitation in metropolitan Adelaide. I. Transplantation from donor beds. South Australian Research and Development Institute, Aquatic Sciences, Adelaide.

Shepherd S. A., and Robertson E. L. (1989). Regional studies – seagrasses of South Australia, western Victoria and Bass Strait. In ‘Biology of Seagrasses. A Treatise on the Biology of Seagrasses with Special Reference to the Australian Region’. (Eds A. W. D. Larkum, A. J. McComb and S. A. Shepherd.) pp. 211–229. (Elsevier: Amsterdam, The Netherlands.)

Shepherd S. A., Bryars S., Kirkegaard I., Harbison P., and Jennings J. T. (2008). ‘Natural History of Gulf St Vincent.’ (Royal Society of South Australia: Adelaide.)

Spurgeon, J. (1999). The socio-economic costs and benefits of coastal habitat rehabilitation and creation. Marine Pollution Bulletin 37, 373–382.
| Crossref | GoogleScholarGoogle Scholar | Wilkinson J., White N., Smythe L., Hutson J., Bestland E., et al. (2005). Volumes of inputs, their concentrations and loads received by Adelaide metropolitan coastal waters. ACWS technical report no. 18, prepared for the Adelaide Coastal Waters Study Steering Committee, September 2005. Flinders Centre for Coastal and Catchment Environments, Flinders University of SA, Adelaide. Available at http://www.epa.sa.gov.au/xstd_files/Water/Report/acws18.pdf [verified 30 April 2010].

Williams, S. L. (2001). Reduced genetic diversity in eelgrass transplantations affects both population growth and individual fitness. Ecological Applications 11, 1472–1488.
| Crossref | GoogleScholarGoogle Scholar |