Thesis (M.S.P.H.)--University of South Florida, 2009. / Title from PDF of title page. Document formatted into pages; contains 129 pages. Includes bibliographical references.

Thesis (Ph. D.)--New York University, 1972. / Includes bibliographical references (leaves [69]-81).

Thesis--University of Wisconsin-Madison. / Photocopy of typescript. Ann Arbor, Mich. : University Microfilms International, 1977. -- 21 cm. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 173-185).

Thesis (Ph. D.)--West Virginia University, 2001. / Title from document title page. Document formatted into pages; contains vii, 60 p. : ill. Includes abstract. Includes bibliographical references (p. 39-42).

Thesis (Ph. D.)--University of California, San Diego, 2001. / Vita. Includes bibliographical references (leaves 304-319).

This research examined the suitability of the biotic ligand model (BLM) approach for assessing environmental risk in surface waters consisting substantially of treated sewage effluent, and the implications of its use within a compliance-based regulatory framework aimed at controlling discharges of metals into the aquatic environment. The results from a series of Daphnia magna acute copper toxicity assays conducted in an undiluted sewage effluent medium demonstrated that BLMs could predict an acute copper toxicity endpoint with suitable accuracy. This finding contributes further support for the use of BLMs for assessing risk and compliance, even in effluent impacted waters. Additional studies, however, also demonstrated that effluent derived organic matter contained a greater concentration of metal complexing ligands per milligram of dissolved organic carbon than organic matter derived from natural sources. This indicates that effluent derived organic matter offers greater protection against the potentially adverse effects from metals than the protection offered by organic matter derived from natural sources. These studies also demonstrated that improvements in the accuracy of BLM forecasts were achievable by taking these differences into account which, from a regulatory perspective, is also desirable since this enhances the environmental relevance of compliance criteria. These findings therefore justify that consideration for the influence of site-specific metal complexation characteristics should included as part of the regulatory framework within which BLMs will be applied. The implication of the BLM approach for Severn Trent Water Limited is that, as currently proposed, the approach will require a reduction in the concentration of copper in the effluent discharges for a small number of wastewater treatment works (9), whereas for zinc, concentration reductions may be required for numerous treatment works (126).

This dissertation proposes a multi-level explanatory framework that strengthens explanations of variation in European Union member states’ compliance with the Anti-Discrimination Directives, and offers novel approaches to testing relationships between key constructs situated at multiple levels of analysis. The framework entails three different yet inter-related levels: system structure, organizational design of public agencies, and the attitudinal and behavioral attributes of civil servants. The theoretical model, proposed in this dissertation, conceptualizes compliance from an integrative approach, and also enables more accurate explanations of the role of information in modifying compliance behavior. This dissertation relies on a multi-method empirical approach, and a combination of secondary and primary sources (i.e. surveys, interviews, observations, and primary documents) to provide answers to the research questions raised in this dissertation.

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