| Main Title |
Real-Time Monitoring for Toxicity Caused by Harmful Algal Blooms and Other Water Quality Perturbations. |
| Author |
Schalie, W. ;
Shedd, T. ;
Widder, M. ;
Kane, A. ;
Silbergeld, E. ;
|
| CORP Author |
Army Center for Environmental Health Research, Fort Detrick, MD. |
| Publisher |
Nov 2001 |
| Year Published |
2001 |
| Report Number |
EPA/CEA-600/R-01/103; |
| Stock Number |
ADA402359 |
| Additional Subjects |
Water quality ;
Toxic hazards ;
Monitoring ;
Real time ;
Chemicals ;
Toxicity ;
Biological detection ;
Fishes ;
Streams ;
Algae ;
Chesapeake bay ;
Biological monitoring system ;
Brevetoxin ;
Pfiesteria piscicida
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
ADA402359 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
99p |
| Abstract |
This project evaluated an automated biological monitoring system that measures fish ventilatory responses (ventilatory rate, ventilatory depth, and cough rate) to detect developing toxic conditions in water. In laboratory tests, acutely toxic levels of brevetoxin (PbTx-2) and toxic Pfiesteria piscicida cultures caused large increases in cough rate. In the field, the automated biomonitoring system operated continuously for 3 mo on the Chicamacomico River, a tributary to the Chesapeake Bay with a history of intermittent toxic algal blooms. The field biomonitor identified five fish response events. Increased conductivity combined with a substantial decrease in water temperature probably caused one event, while contaminants probably surfactants released from inadequately rinsed particle filters produced another response. The other three events, characterized by greatly increased cough rate (two events) or increased ventilation rate and depth (one event), did not have identified causes. Water quality variations did not correspond to the timing of the three events, analyses of water taken by an automated sampler were negative for the presence of Pfiesteria or chemicals that could be associated with the observed responses, and no fish kills occurred on the Chicamacomico River during the monitoring period. Continuing activities to improve the biomonitoring system are discussed. |
| Supplementary Notes |
NCEA-W-1089. |
| Availability Notes |
Product reproduced from digital image. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
| Category Codes |
68D; 57U; 57Y; 47D |
| NTIS Prices |
PC A06/MF A02 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
029500110 |
| Origin |
NTIS |
| Type |
CAT |
