Responses of phytoplankton productivity in the Red River to unbleached pulp and paper mill wastewaters were monitored using in situ ^14C incubation. Preoperational studies, conducted prior to the discharge of mill wastewaters varied seasonally, but revealed similar productivity trends when compared with postoperational studies, conducted after mill discharges began entering the Red River. Carbon assimilation rates measured downstream of mill discharge were generally greater than upstream levels in both preoperational and postoperational studies. Selected physical, chemical, and biological parameters varied seasonally, but showed similar upstream-downstream values and preoperational-postoperational values. Total Organic Carbon (TOC), Dissolved Organic Carbon (DOC), and Biochemical Oxygen Demand (BOD_5) were positively correlated with postoperational productivity rates. Apparent color was negatively correlated with productivity rates.
| Identifer | oai:union.ndltd.org:unt.edu/info:ark/67531/metadc503963 |
| Date | 05 1900 |
| Creators | Holler, Jeffrey Dee |
| Contributors | Dickson, Kenneth L., Rodgers, John H., Jr., Beitinger, Thomas L. |
| Publisher | North Texas State University |
| Source Sets | University of North Texas |
| Language | English |
| Detected Language | English |
| Type | Thesis or Dissertation |
| Format | viii, 108 leaves : maps, Text |
| Coverage | United States - Louisiana |
| Rights | Public, Holler, Jeffrey Dee, Copyright, Copyright is held by the author, unless otherwise noted. All rights reserved. |
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