You need JavaScript to view this

Field assessment of oxytetracycline exposure to the freshwater macrophytes Egeria densa Planch. and Ceratophyllum demersum L

Abstract

In a microcosm study, two aquatic macrophytes, Egeria densa and Ceratophyllum demersum were exposed to nominal concentrations of 0, 5, 20, 50, and 250 {mu}g/L oxytetracycline (n = 3), plus 20 {mu}g/L oxytetracycline amended with additional nitrogen (N) and phosphorus (P). Responses were monitored bi-weekly over a six-week exposure period. Both plant species exhibited a significant decline in growth in the 250 {mu}g/L oxytetracycline and the N- and P-amended units. Decreased light penetration resulting from accumulating oxytetracycline by-products appears to be the primary modifier in the growth of these plants. Increased susceptibility to oxytetracycline exposure was noted in some paired plantings (e.g., E. densa root development), relative to individual plants in these treatments, however, no clear explanation for this response is available. Based on the toxicity data generated in this study, we estimate that current concentrations of oxytetracycline in freshwater environments do not pose a direct risk to E. densa and C. demersum. - Oxytetracycline did not pose a risk for two freshwater macrophytes.
Authors:
Hanson, M L; [1]  Knapp, C W; [2]  Graham, D W [2] 
  1. Department of Environment and Geography, University of Manitoba, 118 Isbister Building, Winnipeg, Manitoba R3T 2N2 (Canada)
  2. Department of Civil, Environmental, and Architectural Engineering, University of Kansas, Lawrence, KS 66045 (United States)
Publication Date:
Jun 15, 2006
Product Type:
Journal Article
Resource Relation:
Journal Name: Environmental Pollution (1987); Journal Volume: 141; Journal Issue: 3; Other Information: DOI: 10.1016/j.envpol.2005.08.068; PII: S0269-7491(05)00476-8; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA)
Subject:
60 APPLIED LIFE SCIENCES; BY-PRODUCTS; ENVIRONMENT; MICROCOSMS; NITROGEN; OXYTETRACYCLINE; PHOSPHORUS; PLANTS; ROOTS; TOXICITY
OSTI ID:
20775828
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0269-7491; ENPOEK; TRN: GB06R1384080011
Submitting Site:
GBN
Size:
page(s) 434-442
Announcement Date:
Oct 16, 2006

Citation Formats

Hanson, M L, Knapp, C W, and Graham, D W. Field assessment of oxytetracycline exposure to the freshwater macrophytes Egeria densa Planch. and Ceratophyllum demersum L. United Kingdom: N. p., 2006. Web. doi:10.1016/j.envpol.2005.08.068.
Hanson, M L, Knapp, C W, & Graham, D W. Field assessment of oxytetracycline exposure to the freshwater macrophytes Egeria densa Planch. and Ceratophyllum demersum L. United Kingdom. https://doi.org/10.1016/j.envpol.2005.08.068
Hanson, M L, Knapp, C W, and Graham, D W. 2006. "Field assessment of oxytetracycline exposure to the freshwater macrophytes Egeria densa Planch. and Ceratophyllum demersum L." United Kingdom. https://doi.org/10.1016/j.envpol.2005.08.068.
@misc{etde_20775828,
title = {Field assessment of oxytetracycline exposure to the freshwater macrophytes Egeria densa Planch. and Ceratophyllum demersum L}
author = {Hanson, M L, Knapp, C W, and Graham, D W}
abstractNote = {In a microcosm study, two aquatic macrophytes, Egeria densa and Ceratophyllum demersum were exposed to nominal concentrations of 0, 5, 20, 50, and 250 {mu}g/L oxytetracycline (n = 3), plus 20 {mu}g/L oxytetracycline amended with additional nitrogen (N) and phosphorus (P). Responses were monitored bi-weekly over a six-week exposure period. Both plant species exhibited a significant decline in growth in the 250 {mu}g/L oxytetracycline and the N- and P-amended units. Decreased light penetration resulting from accumulating oxytetracycline by-products appears to be the primary modifier in the growth of these plants. Increased susceptibility to oxytetracycline exposure was noted in some paired plantings (e.g., E. densa root development), relative to individual plants in these treatments, however, no clear explanation for this response is available. Based on the toxicity data generated in this study, we estimate that current concentrations of oxytetracycline in freshwater environments do not pose a direct risk to E. densa and C. demersum. - Oxytetracycline did not pose a risk for two freshwater macrophytes.}
doi = {10.1016/j.envpol.2005.08.068}
journal = []
issue = {3}
volume = {141}
place = {United Kingdom}
year = {2006}
month = {Jun}
}