Abstract
Microplastics are ubiquitous within the marine environment. The last 10 years have seen research directed at understanding the fate and effect of microplastics within the marine environment; however, no studies have yet addressed how concentrations of these particles could affect sedimentary processes such as nutrient cycling. Herein we first determine the concentration and spatial distribution of microplastics within Baynes Sound, a key shellfish-growing area within coastal British Columbia (BC). We also determined sediment grain size and % organic matter (OM) such that we could relate spatial patterns in sediment microplastic concentrations to sedimentary processes that determine zones of accretion and erosion. Using field-determined concentrations of microplastics, we applied laboratory microcosms studies, which manipulated sediment concentrations of microplastics, OM, and bivalves to determine the influence of sediment microplastics on ammonium cycling within intertidal sediments. Concentrations of microplastics determined within the intertidal sediment varied spatially and were similar to those found in other coastal regions of high urban use. Concentrations were independent of grain size and OM suggesting that physical processes other than those that govern natural sediment components determine the fate of microplastics within sediments. Under laboratory conditions, concentrations of ammonium were significantly greater in the overlying water of treatments with microplastics, clams, and OM compared with treatments without microplastics. These preliminary studies suggest that high concentrations of microplastics have the potential to alter key sedimentary processes such as ammonium flux. This could have serious implications, for example, contributing to eutrophication events in regions of the coast that are highly urbanized.
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References
Andrady AL (2011) Microplastics in the marine environment. Mar Pollut Bull 62:1596–1605
Bendell LI, Thomas C, Stecko JRP (2002) Contrasting the geochemistry of oxic sediments across ecosystems: a synthesis. Appl Geochem 12:1563–1582
Bendell LI, Duckham C, L’Eserpence T, Whiteley J (2010) Changes in the geochemical attributes of the foreshore as a consequence of intertidal shellfish aquaculture. Mar Ecol Prog Ser 404:91–108
Bendell LI, Chan K, Crevecoeur S, Prigent C (2014a) Changes in ammonium and pH within intertidal sediments in relation to temperature and the occurrence of non-indigenous bivalves. Open J Mar Sci 4:151–162
Bendell LI, Birtwell I, Gallaugher P, McKeachie S (2014b) Stewarding the sound. Convener’s report. http://www.sfu.ca/coastal/research-series/listing/BaynesSoundSolutions.html. Accessed Dec 2014
Carson HS, Colbert SL, Kaylor MJ, McDermid KJ (2011) Small plastic debris changes water movement and heat transfer through beach sediments. Mar Pollut Bull 62:1708–1713
Claessens M, Van Cauwenberghe L, Vandegehuchte MB, Janssen CR (2013) New techniques for the detection of microplastics in sediments and field collected organisms. Mar Pollut Bull 70:227–233
Clarke KR, Gorley RN (2006) PRIMER v6: User Manual/Tutorial. PRIMER-E, Plymouth. http://refhub.elsevier.com/S0044-8486(14)00322-6/rf0050. Accessed Dec 2014
Cole M, Lindeque P, Halsband C, Galloway TS (2011) Microplastics as contaminants in the marine environment: a review. Mar Pollut Bull 62:2588–2597
Desforges JPW, Galbraith M, Dangerfield N, Ross P (2014) Widespread distribution of microplastics in subsurface seawater in the NE Pacific Ocean. Mar Pollut Bull 79:94–99
Holmes R, Aminot A, Kérouel R, Hooker B, Peterson B (1999) A simple and precise method for measuring ammonium in marine and freshwater ecosystems. Can J Fish Aquat Sci 56:1801–1808
Holmes LA, Turner A, Thompson RC (2014) Interactions between trace metals and plastic production pellets under estuarine conditions. Mar Chem 167:25–33
Ivar Do Sul J, Costa MF (2014) The present and future of microplastic pollution in the marine environment. Environ Pollut 185:352–364
Jickell TD (1998) Nutrient biogeochemistry of the coastal zone. Science 281:217–222
Karayucel S, Celik MY, Karayucel I, Gokham E (2010) Growth and production of raft cultivated Mediterranean mussel (Mytilus galloprovincialis Lamrack, 1819) in Sinop, Black Sea. Turk J Fish Aquat Sci 10:9–17
Mathalon A, Hill P (2014) Microplastic fibers in the intertidal ecosystem surrounding Halifax Harbor, Nova Scotia. Mar Pollut Bull 81:69–79
Nuelle M-T, Dekiff JH, Remy D, Fries E (2014) A new analytical approach for monitoring microplastics in marine sediments. Environ Pollut 184:161–169
Tenzer R, Gladkikh V (2014) Assessment of density variations of marine sediments with ocean and sediment depths. Sci World J. doi:10.1155/2014/823296
Thompson RC, Olsen Y, Mitchell RP, Davis A, Rowland SJ, John AW, McGonigle D, Russell AE (2004) Lost at sea: where is all the plastic? Science 304(5672):838
Van Cauwenberghe L, Janssen CR (2014) Microplastics in bivalves cultured for human consumption. Environ Pollut 193:65–70
Vianello A, Boldrin A, Guerriero P, Moschino V, Rella R, Sturaro A, Da Ros L (2013) Microplastic particles in sediments of Lagoon of Venice, Italy: first observations on occurrence, spatial patterns and identification. Est Coast Shelf Sci 130:54–61
Acknowledgments
The authors gratefully acknowledge the logistical support of the McKeachie’s. This study was funded by a Natural Science and Engineering Research Council Discovery grant to L. I. Bendell
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Cluzard, M., Kazmiruk, T.N., Kazmiruk, V.D. et al. Intertidal Concentrations of Microplastics and Their Influence on Ammonium Cycling as Related to the Shellfish Industry. Arch Environ Contam Toxicol 69, 310–319 (2015). https://doi.org/10.1007/s00244-015-0156-5
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DOI: https://doi.org/10.1007/s00244-015-0156-5