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Availability and Toxicity of Nickel to Lotic Periphyton and Macroinvertebrates

Bessom, Stephanie Marie
http://rave.ohiolink.edu/etdc/view?acc_num=wright1229483842

Abstract Details

2008, Master of Science (MS), Wright State University, Earth and Environmental Sciences.
There is a lack of information regarding the bioaccumulation and toxicity of nickel (Ni) to lotic ecosystems. The objective of this study was to investigate the source, uptake, and toxicity of Ni by periphyton and macroinvertebrates (Hyalella azteca and Daphnia magna) in simulated stream ecosystems that included sediment and water. Periphyton were exposed to two types of sediment, a low-organic sandy mixture and a high organic silt, treated with varying levels of Ni. After 96 h, Ni levels in overlying water and periphyton were related to those in sediments, although differences existed between sediment types. Tests with 64Ni added to overlying water confirmed nearly all of the Ni in periphyton was derived from sediments. Aqueous uptake, as opposed to dietary accumulation from periphyton, was the dominant pathway of Ni assimilation by the macroinvertebrates. Ni was not overtly toxic to either periphyton or the macroinvertebrates.
Chad R. Hammerschmidt, PhD (Advisor)
G. Allen Burton, Jr., PhD (Committee Member)
James P. Amon, PhD (Committee Member)
68 p.
Environmental Science
¿¿¿¿g/L; PERIPHYTON; Ni; sediment; Spring Run; Little Sugar; Little Sugar Creek

Recommended Citations

Citations

  • Bessom, S. M. (2008). Availability and Toxicity of Nickel to Lotic Periphyton and Macroinvertebrates [Master's thesis, Wright State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wright1229483842

    APA Style (7th edition)

  • Bessom, Stephanie. Availability and Toxicity of Nickel to Lotic Periphyton and Macroinvertebrates. 2008. Wright State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=wright1229483842.

    MLA Style (8th edition)

  • Bessom, Stephanie. "Availability and Toxicity of Nickel to Lotic Periphyton and Macroinvertebrates." Master's thesis, Wright State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=wright1229483842

    Chicago Manual of Style (17th edition)

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© 2008, all rights reserved.
This open access ETD is published by Wright State University and OhioLINK.