GEP  Vol.7 No.12 , December 2019
The Application of the Seaweeds in Neutralizing the “Ocean Acidification” as a Long-Term Multifaceted Challenge
The global effects of ocean acidification (OA) on coral reefs are of growing concern. Carbon dioxide released into the atmosphere as a result of burning fossil fuels, not only has an effect on “global warming”, but also on OA which is called the “other CO2 problem”. OA combined with high ocean temperatures has resulted in a massive bleaching of coral reefs in the Indian Ocean and throughout Southeast Asia over the past decade, which is ultimately lethal. Here we discuss the option if innovative seaweed bio-technology—the Ulva lactuca bioreactor option, with its H+ ion-absorbing capacity and its huge green biomass production of around 50 MT/ha/year—which can stabilize our “World Ocean” and our global coral reefs. From our calculations, we came to the conclusion that an area covered with “Ulva lactuca bioreactors” with a production capacity of 250 × 1016 ha of seaweed per year is needed to remove all H+ ions that cause OA in our “World Ocean” since the beginning of the “Industrial Revolution” ≈ 250 years ago. This is a daunting task and therefore we have opted for a multi-faceted approach including variability in seaweed species, avoidance of eutrophication & heavy-metal accumulation, prevention of global warming by more green-biomass production and a better estimation of the huge Kelp seaweed populations in temperate zones in order to protect our coral reefs for the short term.
Cite this paper: Ginneken, V. (2019) The Application of the Seaweeds in Neutralizing the “Ocean Acidification” as a Long-Term Multifaceted Challenge. Journal of Geoscience and Environment Protection, 7, 126-138. doi: 10.4236/gep.2019.712009.

[1]   Albright, R., Caldeira, L., Hosfelt, J., Kwiatkowski, L., Maclaren, J. K., Caldeira, K. et al. (2016). Reversal of Ocean Acidification Enhances Net Coral Reef Calcification. Nature, 531, 362-365.

[2]   Barker, S., & Ridgwell, A. (2012). Ocean Acidification. Nature Education Knowledge, 3, 21.

[3]   Battle, M., Bender, M. L., Tans, P. P., White, J. W., Ellis, J. T., Conway, T., & Francey, R. J. (2000). Global Carbon Sinks and Their Variability Inferred from Atmospheric O2 and δ13C. Science, 287, 2467-2470.

[4]   Bishop, J., & Hill, Ch. (2014). Global Biodiversity Finance; the Case for International Payments for Ecosystem Services; in Association with IUCN and UNEP, IUCN 2014.

[5]   Britton, D., Cornwall, C. E., Revill, A. T., Hurd, C. L., & Johnson, C. R. (2016). Ocean Acidification Reverses the Positive Effects of Seawater pH Fluctuations on Growth and Photosynthesis of the Habitat-Forming Kelp, Ecklonia radiata. Scientific Reports, 6, Article No. 26036.

[6]   Bruhn, A., Dahl, J., Nielsen, H. B., Nikolaisen, L., Rasmussen, M. B., Markager, S., Olesen, B., Arias, C., & Jensen, P. D. (2011). Bioenergy Potential of Ulva lactuca: Biomass Yield, Methane Production and Combustion. Bioresource Technology, 102, 2595-2604.

[7]   Buschmann, A. H., Camus, C., Infante, J., Neori, A., Israel, á., Hernández-González, M. C., Pereda, S. V., Gomez-Pinchetti, J. L., Golberg, A., Tadmor-Shalev, N., & Critchley, A. T. (2017). Seaweed Production: Overview of the Global State of Exploitation, Farming and Emerging Research Activity. European Journal of Phycology, 52, 391-406.

[8]   Caldeira, K., & Wickett, M. E. (2003). Anthropogenic Carbon and Ocean pH. Nature, 425, 365-365.

[9]   Christiansen, R. C. (2008). British Report: Use Kelp to Produce Energy.

[10]   D’Angelo, C., & Wiedenmann, J. (2014). Impact of Nutrient Enrichment on Coral Reef: A New Perspectives and Implications for Coastal Management and Reef Survival. Current Opinion in Environmental Sustainability, 7, 82-93.

[11]   De’ath, G., Lough, J. M., & Fabricius, K. E. (2009). Declining Coral Calcification on the Great Barrier Reef. Science, 323, 116-119.

[12]   Doney, S. C., Fabry, V. J., Feely, R. A., & Kleypas, J. A. (2009). Ocean Acidification: The Other CO2 Problem. Annual Review of Marine Science, 1, 169-192.

[13]   Duggins, D. O., Simenstad, C. A., & Estes, J. A. (1989). Magnification of Secondary Production by Kelp Detritus in Coastal Marine Ecosystems. Science, 245, 170-173.

[14]   Enochs, I. C., Manzello, D. P., Doham, E. M., Kolodziej, G., Okano, R., Johnston, L., Price, N. N. et al. (2015). Shift from Coral to Macroalgae Dominance on a Volcanically Acidified Reef. Nature Climate Change, 5, 1083-1088.

[15]   Feeley, R. A., Doney, F. S., & Cooley, S. R. (2009). Ocean Acidification: Present Conditions and Future Changes in a High-CO2 World. Oceanography, 22, 36-47.

[16]   Hall-Spencer, J. M., Rodolfo-Metalpa, R., Martin, S., Ransome, E., Fine, M., Turner, S. M., Rowley, S. J., Tedesco, D., & Buia, M. C. (2008). Volcanic Carbon Dioxide Vents Show Ecosystem Effects of Ocean Acidification. Nature, 454, 96-99.

[17]   Hurd, C. L., Harrison, P. J., Bischof, K., & Lobban, C. S. (2014). Seaweed Ecology and Physiology (2nd ed., 551 p.). Cambridge: Cambridge University Press.

[18]   Laffoley, D. A., & Grimsditch, G. (2009). The Management of Natural Coastal Carbon Sinks (53 p.). Gland: IUCN.

[19]   Milledge, J. J., Smith, B., Dyer, P. W., & Harvey, P. (2014). Macroalgae-Derived Biofuel: A Review of Methods of Energy Extraction from Seaweed Biomass. Energies, 7, 7194-7222.

[20]   Mora, C., Wei, C. L., Rollo, A., Amaro, T., Baco, A. R. et al. (2013). Biotic and Human Vulnerability to Projected Changes in Ocean Biogeochemistry over the 21st Centu-ry. PLoS Biology, 11, e1001682.

[21]   Normille, D. (2010). Hard Summer for Corals Kindles Fears for Survival of Reefs. Science, 329, 1001.

[22]   Oreskens, N. (2004). The Scientific Consensus on Global Warming. Science, 306, 1686.

[23]   Orr, J. C., Fabry, V. J., Amount, O., Yool, A. et al. (2005). Anthropogenic Ocean Acidification over the Twenty-First Century and Its Impact on Calcifying Organisms. Nature, 479, 681-686.

[24]   Pennisi, E. (2009). Coral Reefs. Calcification Rates Drops in Australian Reefs. Science, 323, 27.

[25]   Raven, J., Caldeira, K., Elderfield, H., Hoegh-Guldberg, O., Liss, P. S., Riebesell, U., Sheperd, J., Turley, C., & Watson, A. (2005). Ocean Acidification Due to Increasing Atmospheric Carbon Dioxide (57 p.). Royal Society Policy Document.

[26]   van Ginneken, V. (2017). The Photosynthetic System of the Seaweeds: The Seaweed Paradox. Asian Journal of Science and Technology, 8, 6567-6571.

[27]   van Ginneken, V. (2018). Some Mechanisms Seaweeds Employ to Cope with Salinity Stress in the Harsh Euhaline Oceanic Environment. American Journal Plant Sciences, 9, 1191-1211.

[28]   van Ginneken, V., & de Vries, E. (2015). Towards a Seaweed Based Economy. Journal of Fisheries Sciences, 9, 85-88.

[29]   van Ginneken, V., & de Vries, E. (2016). Towards a Seaweed Based Economy: The Global Ten Billion People Issue at the Midst of the 21st Century. Journal of Fisheries Sciences, 10, 1-11.

[30]   van Ginneken, V., & de Vries, E. (2018). Seaweeds as Biomonitoring System for Heavy Metal (HM) Accumulation and Contamination of Our Oceans. American Journal of Plant Sciences, 9, 1514-1530.

[31]   van Ginneken, V., de Vries, E., & Wijgerde, T. (2016). A Suggested “Seaweed-Plantation Model” to Tackle the Looming Phosphorus Crises in the 21st Century at the Rhine/ North Sea System. Journal of Fisheries Sciences, 9, 105-114.