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The impact of a benthic filter feeder: limitations imposed by physical transport of algae to the benthos


, : The impact of a benthic filter feeder: limitations imposed by physical transport of algae to the benthos. Canadian Journal of Fisheries and Aquatic Sciences 62(1): 205-214

We used an acoustic Doppler profiler to investigate the hydrodynamics of a nearshore site in western Lake Erie, and we incorporated the measured parameters in numerical simulations of phytoplankton consumption by benthic zebra mussels (Dreissena polymorpha) to examine the link between pelagic production and benthic filter feeders. Daily-averaged eddy diffusivities varied from 10-5 to 10-4 m2[center dot]s-1 at our site. Our simulations demonstrate that diffusivities of this order decrease near-bed algal biomass, while algal biomass in the pelagic remains relatively unaffected. Between 8% and 67% of the algal biomass in the water column could be consumed daily, depending on the shape and magnitude of the diffusivity profile. Correspondingly, in situ vertical biomass profiles showed a near-bed zone of algal depletion, but no impact was observed near the surface. The impact of the zebra mussel in nearshore regions is expected to be stronger than in deeper open water. The flow of algal biomass into the benthos was tightly coupled with turbulent mixing, suggesting that open water algal consumption by zebra mussels is small compared with previously published estimates that ignored vertical turbulent mixing processes.

US$19.90

DOI: 10.1139/f04-188


Other references

Van Wyk, J.F., 1962: Production of pea seed. II. Guard against mixing of seed. Climatic and soil requirements, varieties, culture, harvesting and pest and disease control of pea seed crops.

Tougas, G.; Yuan, L.Y.; Radamaker, J.W.; Chiverton, S.G.; Hunt, R.H., 1992: Effect of acupuncture on gastric acid secretion in healthy male volunteers. Six randomized, placebo controlled studies were performed to investigate the effect of electroacupuncture on gastric acid output in 38 healthy males. Electroacupuncture decreased basal acid output when compared to placebo acupuncture (from 3.50 +-...

Khrenovskov E.I.; Strakhov V.G., 1983: Effect of foliar nutrition with micro elements and succinic acid on respiration intensity activity of oxidation reduction enzymes and on productivity of grape. Agrokhimiya (5): 86-91

Mashiter K.; Zor U.; Bloom G.; Field J.B., 1972: Effects of glucose glucagon tolbutamide and theophylline on the cyclic amp content and insulin release of slices of human islet cell adenomas. Diabetes 21(SUPPL 1): 346-347

Vagin, Yuv, 1980: Some possibilities of population regulation of mink fertility. Cytology and genetics4(2): 49-54

Morali R.; Lorences E.P.; Revilla G.; Acebes J.L.; Zarra I., 1990: Structure of xyloglucan extracted from cell walls of pine hypocotyls. Physiologia Plantarum 79(2 PART 2): A9

Khawlie M.R.; Hinai K., 1979: The Neogene conglomerates of Bekaa, Lebanon; a construction material source. Pages 221-270 1979

Savage T.M.; Spilsbury R.A.; Bolton D.P.G.; Simpson B.R., 1971: The effects of taloximine on the depressed ventilation of anesthetized subjects. British Journal of Anaesthesia 43(7): 718-719

Hurren, E., 2009: Welfare-to-work schemes and a crusade against outdoor relief in the Brixworth Union, Northamptonshire, in the 1880s. Family & Community History 4(1): 19-30

Weil, A.R., 2017: Global Health Policy. Health Affairs 36(11): 1863-1863