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Factors influencing organochlorine uptake in age-0 brown trout (Salmo trutta) in lotic environments

Berglund, Olof LU ; Larsson, Per LU ; Brönmark, Christer LU ; Greenberg, L; Eklöv, Anders LU and Okla, Lennart LU (1997) In Canadian Journal of Fisheries and Aquatic Sciences 54(12). p.2767-2774
Abstract
In 1994 and 1995, we investigated the relationship between stream morphology and water chemistry and levels of organochlorines (HCB, PCB, and DDT) in young-of-the-year brown trout (Salmo trutta) from 25 streams in southern Sweden. Contrary to earlier findings for lakes, we found a positive relationship between trophic status (total phosphorus) and uptake of persistent pollutants in stream biota (trout). This difference between benthic, stream environments and pelagic, lake environments may be related to processes affecting pollutant uptake, i.e., pollutant "spiralling" or the shift from heterotrophy to autotrophy in streams. Land use in the catchment area of the streams also affected pollutant levels in trout, with higher levels in... (More)
In 1994 and 1995, we investigated the relationship between stream morphology and water chemistry and levels of organochlorines (HCB, PCB, and DDT) in young-of-the-year brown trout (Salmo trutta) from 25 streams in southern Sweden. Contrary to earlier findings for lakes, we found a positive relationship between trophic status (total phosphorus) and uptake of persistent pollutants in stream biota (trout). This difference between benthic, stream environments and pelagic, lake environments may be related to processes affecting pollutant uptake, i.e., pollutant "spiralling" or the shift from heterotrophy to autotrophy in streams. Land use in the catchment area of the streams also affected pollutant levels in trout, with higher levels in agricultural landscapes and lower levels in forested areas. Size of catchment area, however, did not influence uptake of pollutants in trout. The results indicate that eutrophication of streams by agricultural activities and excessive nutrient loading may increase uptake of persistent pollutants in stream biota. (Less)
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publication status
published
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in
Canadian Journal of Fisheries and Aquatic Sciences
volume
54
issue
12
pages
2767 - 2774
publisher
National Research Council Canada
ISSN
1205-7533
DOI
10.1139/cjfas-54-12-2767
language
English
LU publication?
yes
id
c866822e-27c5-42b7-a96d-cb596c557813 (old id 8163896)
date added to LUP
2015-11-04 12:59:01
date last changed
2016-04-15 20:20:27
@article{c866822e-27c5-42b7-a96d-cb596c557813,
  abstract     = {In 1994 and 1995, we investigated the relationship between stream morphology and water chemistry and levels of organochlorines (HCB, PCB, and DDT) in young-of-the-year brown trout (Salmo trutta) from 25 streams in southern Sweden. Contrary to earlier findings for lakes, we found a positive relationship between trophic status (total phosphorus) and uptake of persistent pollutants in stream biota (trout). This difference between benthic, stream environments and pelagic, lake environments may be related to processes affecting pollutant uptake, i.e., pollutant "spiralling" or the shift from heterotrophy to autotrophy in streams. Land use in the catchment area of the streams also affected pollutant levels in trout, with higher levels in agricultural landscapes and lower levels in forested areas. Size of catchment area, however, did not influence uptake of pollutants in trout. The results indicate that eutrophication of streams by agricultural activities and excessive nutrient loading may increase uptake of persistent pollutants in stream biota.},
  author       = {Berglund, Olof and Larsson, Per and Brönmark, Christer and Greenberg, L and Eklöv, Anders and Okla, Lennart},
  issn         = {1205-7533},
  language     = {eng},
  number       = {12},
  pages        = {2767--2774},
  publisher    = {National Research Council Canada},
  series       = {Canadian Journal of Fisheries and Aquatic Sciences},
  title        = {Factors influencing organochlorine uptake in age-0 brown trout (Salmo trutta) in lotic environments},
  url          = {http://dx.doi.org/10.1139/cjfas-54-12-2767},
  volume       = {54},
  year         = {1997},
}