Author: Richard E. SparksPublisher:
ISBN:
Category : Illinois Waterway (Ill.)
Languages : en
Pages : 36
Book Description
Toxicity of Sediments in the Illinois Waterway
Author: Richard E. SparksPublisher:
ISBN:
Category : Illinois Waterway (Ill.)
Languages : en
Pages : 36
Book Description
Distribution of Toxicity in Sediments of the Illinois Waterway
Author: Kevin Douglas BlodgettPublisher:
ISBN:
Category : Water quality
Languages : en
Pages : 148
Book Description
Sediment Toxicity in Reach 15 of the Upper Mississippi River
Author: Denise B. StoeckelPublisher:
ISBN:
Category : Freshwater mussels
Languages : en
Pages : 100
Book Description
Identification of Toxic Substances in the Upper Illinois River
Author: Richard E. SparksPublisher:
ISBN:
Category : Ammonia
Languages : en
Pages : 80
Book Description
Identification of Toxic Substances in the Upper Illinois River
Author: Richard E. SparksPublisher: Forgotten Books
ISBN: 9781333773304
Category : Business & Economics
Languages : en
Pages : 86
Book Description
Excerpt from Identification of Toxic Substances in the Upper Illinois River: Final Report During the course of this study, several species of fingernail clams, includ ing M. Transversum, reappeared in the Chicago area waterways and in the Illinois River at Peoria and Havana. There are at least four possible explanations for this surprising reappearance of clams in the same general areas where the porewaters tested toxic. First, we found that clams recolonizing the upper Illinois are more resistant to ammonia than the clams from the lower Illinois, where the organisms were obtained for all of the early bioassays. Second, our previous research demon strated that the surface layers of sediment in some areas are less toxic than layers a few centimeters deeper. Toxicity may have been overestimated in tests where surface and deep layers of sediment were mixed prior to testing. Third, toxic episodes may be brief and infrequent, allowing organisms to colonize in between episodes. Fourth, the distribution of toxicity in sediments may be extremely patchy, so that healthy organisms are found adjacent to barren areas. If the latter two hypotheses prove to be true, acute toxicity in the Illinois River has changed recently from a widespread problem to a more localized or episodic problem. Reduction of toxicity in surface sediments may reflect recent reductions in ammonia loading from sewage treatment plants in the Chicago area, although it is not clear whether the sources of ammonia in the porewaters are effluents, the deeper layers of sediments, or both. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Identification of the Sediment-associated Contaminants in the Illinois River Complex Using Toxicity Identification Evaluation (TIE)
Author: W. Tyler MehlerPublisher:
ISBN:
Category : Water
Languages : en
Pages : 202
Book Description
The difficulty of assessing risk of sediment-associated contaminant mixtures to benthic ecosystems is often attributed to understanding the bioavailable fraction of each contaminant. These issues have led to the development of the toxicity identification evaluation (TIE). Past pore water TIE testing on Illinois River sediments has indicated that ammonia was the primary contaminant. The current study, however, suggests that ammonia is no longer the primary contaminant of concern, but rather non-polar organics, including polycyclic aromatic hydrocarbons, are the primary cause for toxicity in the Illinois River Complex (IRC). The study provides data that could be used in combination with previous work to more accurately characterize the sources and spatial trends of toxicity in Illinois River sediments for future risk assessment and mitigation.
Identification of the Sediment-associated Contaminants in the Illinois River Complex Using a Toxicity Identification Evaluation (TIE)
Author: Wesley Tyler MehlerPublisher:
ISBN:
Category :
Languages : en
Pages : 80
Book Description
The difficulty of assessing risk of sediment-associated contaminant mixtures to benthic ecosystems is often attributed to understanding the bioavailable fraction of each contaminant. These issues have led to the development of the toxicity identification evaluation (TIE). Past pore water TIE testing on Illinois River sediments has indicated that ammonia was the primary contaminant. The current study, however, suggests that ammonia is no longer the primary contaminant of concern, but rather non-polar organics, including polycyclic aromatic hydrocarbons, are the primary cause for toxicity in the Illinois River Complex (IRC). The study provides data that could be used in combination with previous work to more accurately characterize the sources and spatial trends of toxicity in Illinois River sediments for future risk assessment and mitigation.
Illinois River Fingernail Clam Toxicity Study
Author: Publisher:
ISBN:
Category : Illinois River (Ill.)
Languages : en
Pages : 116
Book Description
Sedimentation in the Illinois River Valley and Backwater Lakes
Author: Nani G. BhowmikPublisher:
ISBN:
Category : Sediment transport
Languages : en
Pages : 18
Book Description
Possible Biological Impacts of Wave Wash Resuspension of Sediments Caused by Boat Traffic in the Illinois River
Author: Richard E. SparksPublisher:
ISBN:
Category :
Languages : en
Pages : 26
Book Description
The physical effects, such as waves and turbulence, associated with the passage of a boat are more pronounced in a narrow, shallow river channel such as the Illinois Waterway, than in the relatively wider and deeper Mississippi River. The bed material in the Illinois below Hennepin (river mile 207) is composed predominantly of silts and clays, which are more easily resuspended by boat traffic and which also take longer to settle, than the sands which largely comprise the bed of the Mississippi. The Illinois thus seems to be especially vulnerable to the physical effects of increased boat traffic. In addition, the areas that are most productive fish and wildlife in the Illinois Valley, the side channels, backwaters, and bottomland lakes, which flank the main channel, are especially vulnerable to siltation, because the current is reduced in these areas and suspended material tends to settle out. The purpose of this report is to evaluate the impact of increased frequency of wave wash and resuspension of sediments, resulting from increased boat traffic, on the biota in the channel and lateral areas of the Illinois River. (Author).