Ecosystem Restoration: Enhancing Ecosystem Services with Floating Aquaculture

Daniel Rittschof (Duke University Marine Laboratory, Nicholas School, Duke University, USA)
Sergey Dobretsov (Centre of Excellence in Marine Biotechnology, Sultan Qaboos University, Muscat, Oman; Department of Marine Sciences, Sultan Qaboos University, Muscat, Oman)

Article ID: 4658



Restoration ecologists recognize the need for restoring ecosystem servicesin sustainable ways that meet societal needs. In the UK, Ireland, Australia,and some US states the goal is restoring native oyster reefs. In otherstates, failures at restoration due to poor water quality and predation havefocused restoration activities on techniques that work, restoring intertidalreefs and generating living shorelines that reduce or reverse erosion. In theUnited States, restoring water quality and reducing or reversing erosion aresocietally accepted entry points for repairing estuarine ecosystems. Thisstudy is an overview of the current status of oyster reef restoration andprovide a novel approach called “oyster reef in a bag”. Combining oysterreef restoration efforts with existing floating oyster aquaculture technologygenerates novel ecosystems that are a combination of biofouling and oysterreef communities. These novel ecosystems could be a practical beginningto improve water quality, mitigate erosion and restore higher trophic levelecosystem services.


Oyster reefs; Restoration ecology; Aquaculture; Restoration; Management; Novel ecosystems

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[1] Coastal Federation, N.C., 2021. Oyster Restoration and Protection Plan for North Carolina: A Blueprint for Action 2015-2020. (Newport, N.C.).

[2] Pauly, D., 1995. Anecdotes and the shifting baseline syndrome of fisheries. Trends in Ecology & Evolution. 10(10), 430. DOI:

[3] Preston, J., Gamble, C., Debney, A., et al., 2020. European native oyster habitat restoration handbook, UK and Ireland. pp. 61.

[4] The Nature Conservancy Australia, 2021. Rebuilding Australia’s lost shellfish reefs. 2021 Reef builders annual report. pp. 17.

[5] Walters, L., Donnelly, M., Sacks, P., et al., 2017. Lessons learned from living shoreline stabilization in popular tourist areas: boat wakes, volunteer support, and protecting historic structures. Living Shorelines.(Boca Raton, FL: CRC Press), 235-248.

[6] Rodriguez, A.B., Fodrie, F.J., Ridge, J.T., et al., 2014. Oyster reefs can outpace sea-level rise. Nature Climate Change. 4(6), 493-497.

[7] Garvis, S.K., Sacks, P.E., Walters, L.J., 2015. Formation, movement, and restoration of dead intertidal oyster reefs in Canaveral National Seashore and Mosquito Lagoon, Florida. Journal of Shellfish Research. 34(2), 251-258.

[8] Jordan, W.R., Jordan III, W.R., Gilpin, M.E., et al., 1987. Restoration Ecology. Cambridge; New York: Cambridge University Press.

[9] Zhang, Y.S., Cioffi, W.R., Cope, R., et al., 2018. A global synthesis reveals gaps in coastal habitat restoration research. Sustainability. 10(4), 1040.

[10] The Nature Conservancy Australia, 2021. Victoria’s lost reefs rediscovered. Restoring shellfish reefs. pp. 9.

[11] Chambers, L.G., Gaspar, S.A., Pilato, C.J., et al., 2018. How Well Do Restored Intertidal Oyster Reefs Support Key Biogeochemical Properties in a Coastal Lagoon? Estuaries and Coasts. 41(3), 784-799. DOI:

[12] Cacabelos, E., Ramalhosa, P., Canning-Clode, J., et al., 2020. The Role of Biofilms Developed under Different Anthropogenic Pressure on Recruitment of Macro-Invertebrates. International Journal of Molecular Sciences. 21(6), 2030.

[13] Gittman, R.K., Scyphers, S.B., Smith, C.S., et al., 2016. Ecological consequences of shoreline hardening: a meta-analysis. BioScience. 66(9), 763-773.

[14] Farag, A.M., Hull, R.N., Clements, W.H., et al., 2016. Restoration of impaired ecosystems: An ounce of prevention or a pound of cure? Introduction, overview, and key messages from a SETAC-SER

[15] workshop. Integrated Environmental Assessment and Management. 12(2), 247-252.

[16] Den Hartog, C., Polderman, P.J.G., 1975. Changes in the seagrass populations of the Dutch Waddenzee. Aquatic Botany. 1, 141-147. DOI:

[17] Nienhuis, P.H., De Bree, B.H.H., 1977. Production and ecology of eelgrass (Zostera marinal L.) in the Grevelingen estuary, the Netherlands, before and after the closure. Hydrobiologia. 52(1), 55-66. DOI:

[18] Giesen, W.B.J.T., van Katwijk, M.M., den Hartog, C., 1990. Eelgrass condition and turbidity in the Dutch Wadden Sea. Aquatic Botany. 37(1), 71-85. DOI:

[19] Moorman, M.C., Augspurger, T., Stanton, J.D., et al., 2017. Where's the Grass? Disappearing Submerged Aquatic Vegetation and Declining Water Quality in Lake Mattamuskeet. Journal of Fish and Wildlife Management. 8(2), 401-417. DOI:

[20] Pickett, S.T., Burch, W.R., Dalton, S.E., et al., 1997. A conceptual framework for the study of human ecosystems in urban areas. Urban Ecosystems. 1(4), 185-199.

[21] MacMahon, J.A., Holl, K.D., 2002. Designer Communities. Conservation Biology. 3, 3-4.

[22] Hobbs, R.J., Higgs, E., Harris, J.A., 2009. Novel ecosystems: implications for conservation and restoration. Trends in Ecology & Evolution. 24(11), 599-605.

[23] Póvoa, A.A., Skinner, L.F., de Araújo, F.V., 2021. Fouling organisms in marine litter (rafting on abiogenic substrates): A global review of literature. Marine Pollution Bulletin. 166, 112189.

[24] DOI:

[25] Al-Khayat, J.A., Veerasingam, S., Aboobacker, V.M., et al., 2021. Hitchhiking of encrusting organisms on floating marine debris alon the west coast of Qataar, Arabian.Persian Gulf. Science of the Total Environment. 776, 145985. DOI:

[26] Rech, S., Gusmao, J.B., Kiessling, T., et al., 2021. A desert in the ocean – Depauperate fouling communities on marine litter in the hyper-oligotrophic South Pacific Subtropical Gyre. Science of The Total Environment. 759, 143545. DOI:

[27] Neely, K.L., Ziegler, T.A., Peloso, M., et al., 2021. Enhancing artificial reef fish populations by providing invertebrate prey refugia. Fisheries Research. 241, 106003.

[28] DOI:

[29] Li, H.X., Orihuela, B., Zhu, M., et al., 2016. Recyclable plastics as substrata for settlement and growth of bryozoans Bugula neritina and barnacles Amphibalanus amphitrite. Environmental Pollution. 218, 973-980.

[30] Qi, Y., Wu, Z., He, J., et al., 2019. Conspecific cues that induce spore settlement in the biofouling and green tide-forming alga Ulva tepida provide a potential aggregation mechanism. International Biodeterioration & Biodegradation. 145, 104807.

[31] Dreiseitl, R.S., 2016. American Society of Landscape Architects: 2016 ASLA Professional Awards (Online). (Accessed 11 May 2020).

[32] Barto, P., 2019. The return of Singapore’s urban otters. (Online). Available: (Accessed 18 Jan 2021).

[33] Turrel, C., 2020. Cheeky otters are thriving in Singapore—and adapting quickly to big city life. (Online).

[34] Vanderklift, M.A., Doropoulos, C., Gorman, D., et al., 2020. Using Propagules to Restore Coastal Marine Ecosystems. Frontiers in Marine Science. 7(724). DOI:

[35] Luckenbach, M.W., Mann, R., Wesson, J.A., 1999. Oyster reef habitat restoration: a synopsis and synthesis of approaches; proceedings from the symposium, Williamsburg, Virginia, April 1995.

[36] Kirby, M.X., 2004. Fishing down the coast: historical expansion and collapse of oyster fisheries along continental margins. Proceedings of the National Academy of Sciences. 101(35), 13096-13099.

[37] Beck, M.W., 2009. Shellfish reefs at risk: a global analysis of problems and solutions. Nature Conservancy.

[38] Lenihan, H.S., Peterson, C.H., 1998. How habitat degradation through fishery disturbance enhances impacts of hypoxia on oyster reefs. Ecological Applications. 8(1), 128-140.

[39] DOI:[0128:HHDTFD]2.0.CO;2

[40] Powers, S.P., Peterson, C.H., Grabowski, J.H., et al., 2009. Success of constructed oyster reefs in no-harvest sanctuaries: implications for restoration. Marine Ecology Progress Series. 389, 159-170.

[41] Dobretsov, S., Rittschof, D., 2020. Love at First Taste: Induction of Larval Settlement by Marine Microbes. International Journal of Molecular Sciences. 21(3), 731.

[42] Dunn, R.P., Eggleston, D.B., Lindquist, N., 2014. Oyster-sponge interactions and bioerosion of reef-building substrate materials: implications for oyster restoration. Journal of Shellfish Research. 33(3), 727-738.

[43] Kennedy, V.S., Shaw, K.S., Newell, R.I., 2009. Discriminatory predation by three invertebrates on eastern oysters (Crassostrea virginica) compared with non-native Suminoe oysters (C. ariakensis). Invertebrate Biology. 128(1), 16-25.

[44] Meyer, D.L., Townsend, E.C., Thayer, G.W., 1997. Stabilization and erosion control value of oyster cultch for intertidal marsh. Restoration Ecology. 5(1), 93-99.

[45] Dame, R.F., 1984. Oyster reefs as components in estuarine nutrient cycling: Incidental or regulating. Oyster reef habitat restoration: a synopsis and synthesis of approaches. Edited by MW Luckenbach, R. Mann and JA Wesson. Virginia Institute of Marine Science Press, Gloucester Point, eds. M.W. Luckenbach, R. Mann & J.A. Wesson. 267-280.

[46] Newell, R.I., Cornwell, J.C., Owens, M.S., 2002. Influence of simulated bivalve biodeposition and microphytobenthos on sediment nitrogen dynamics: a laboratory study. Limnology and Oceanography. 47(5), 1367-1379.

[47] Peterson, C.H., Grabowski, J.H., Powers, S.P., 2003. Estimated enhancement of fish production resulting from restoring oyster reef habitat: quantitative valuation. Marine Ecology Progress Series. 264, 249-264.

[48] Coen, L.D., Brumbaugh, R.D., Bushek, D., et al., 2007. Ecosystem services related to oyster restoration. Marine Ecology Progress Series. 341, 303-307.

[49] Grabowski, J.H., Brumbaugh, R.D., Conrad, R.F., et al., 2012. Economic valuation of ecosystem services provided by oyster reefs. Bioscience. 62(10), 900-909.

[50] Kellogg, M.L., Cornwell, J.C., Owens, M.S., et al., 2013. Denitrification and nutrient assimilation on a restored oyster reef. Marine Ecology Progress Series. 480, 1-19.

[51] Freitag, A., Sohn, N., Hooper, M., et al., 2012. The geography of mercury and PCBs in North Carolina’s local seafood. Marine Pollution Bulletin. 64(7), 1330-1338.

[52] Nierstedt, R.J., Okun, D.A., O’Melia, C.R., et al., 1980. Wastewater management in coastal North Carolina. Water Resources Research Institute of the University of North Carolina.

[53] Roberts, D., Rittschof, D., Holm, E., et al., 1991. Factors influencing initial larval settlement: temporal, spatial and surface molecular components. Journal of Experimental Marine Biology and Ecology. 150(2), 203-221. DOI:

[54] Fitridge, I., Dempster, T., Guenther, J., et al., 2012. The impact and control of biofouling in marine aquaculture: a review. Biofouling. 28(7), 649-669. DOI:

[55] Muething, K.A., Tomas, F., Waldbusser, G., et al., 2020. On the edge: assessing fish habitat use across the boundary between Pacific oyster aquaculture and eelgrass in Willapa Bay, Washington, USA. Aquaculture Environment Interactions. 12, 541-557.

[56] Carlton, J.T., 2021. RE: Personal communication regarding introduction of invasive species by boat.

[57] Rittschof, D., 2017. Off the shelf fouling management. Marine Drugs. 15(6), 176.

[58] Rittschof, D., 2017. Trypsins: Keystone Enzymes in Estuarine Invertebrate Communities. JSM Enzymol. Protein Science. 2(1).

[59] Dobretsov, S., Coutinho, R., Rittschof, D., et al., 2019. The oceans are changing: impact of ocean warming and acidification on biofouling communities. Biofouling. 35(5), 585-595.

[60] DOI:

[61] Gittman, R.K., Peterson, C.H., Currin, C.A., et al., 2016. Living shorelines can enhance the nursery role of threatened estuarine habitats. Ecological Applications. 26(1), 249-263.

[62] Moreira, A., Figueira, E., Libralato, G., et al., 2018. Comparative sensitivity of Crassostrea angulata and Crassostrea gigas embryo-larval development to As under varying salinity and temperature. Marine Environmental Research. 140, 135-144. DOI:

[63] Moreira, A., Freitas, R., Figueira, E., et al., 2018. Combined effects of arsenic, salinity and temperature on Crassostrea gigas embryotoxicity. Ecotoxicology and Environmental Safety. 147, 251-259. DOI:

[64] Ginger, K.W., Vera, C.B., Dineshram, R., et al., 2013. Larval and post-larval stages of Pacific oyster (Crassostrea gigas) are resistant to elevated CO2. PLoS One. 8(5).

[65] Ko, G.W., Dineshram, R., Campanati, C., et al., 2014. Interactive effects of ocean acidification, elevated temperature, and reduced salinity on early-life stages of the Pacific oyster. Environmental Science & Technology. 48(17), 10079-10088.

[66] Ekstrom, J.A., Suatoni, L., Cooley, S.R., et al., 2015. Vulnerability and adaptation of US shellfisheries to ocean acidification. Nature Climate Change. 5(3), 207-214.

[67] Wei, L., Wang, Q., Wu, H., et al., 2015. Proteomic and metabolomic responses of Pacific oyster Crassostrea gigas to elevated pCO2 exposure. Journal of Proteomics. 112, 83-94.

[68] Dineshram, R., Chandramouli, K., Ko, G.W.K., et al., 2016. Quantitative analysis of oyster larval proteome provides new insights into the effects of multiple climate change stressors. Global Change Biology. 22(6), 2054-2068. DOI:

[69] Meyer-Kaiser, K.S., Houlihan, E.P., Wheeler, J.D., et al., 2019. Behavioral response of eastern oyster Crassostrea virginica larvae to a chemical settlement cue is not impaired by low pH. Marine Ecology Progress Series. 623, 13-24.

[70] Sprague, V., 1971. Diseases of oysters. Annual Review of Microbiology. 25, 210-230. DOI:

[71] Pernet, F., Lupo, C., Bacher, C., et al., 2016. Infectious diseases in oyster aquaculture require a new integrated approach. Philosophical Transactions of the Royal Society B: Biological Sciences. 371(1689),20150213.


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