Relationships between eutrophication, cyanobacteria blooms and avian botulism mortalities in the Great Salt Lake
Massive bird mortalities due to botulism occur in Farmington and Bear River Bays in the Great Salt Lake. During 2007 we investigated whether there could be a relationship between blooms of the toxic cyanobacteria, Nodularia spumengia and botulism outbreaks in Northern Shoveler ducks and other birds....
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ftutahsudc:oai:digitalcommons.usu.edu:wats_facpub-1895 2023-05-15T17:43:52+02:00 Relationships between eutrophication, cyanobacteria blooms and avian botulism mortalities in the Great Salt Lake Wurtsbaugh, Wayne A. 2011-08-25T07:00:00Z application/pdf https://digitalcommons.usu.edu/wats_facpub/880 https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1895&context=wats_facpub unknown Hosted by Utah State University Libraries https://digitalcommons.usu.edu/wats_facpub/880 https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1895&context=wats_facpub Copyright for this work is held by the author. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user. For more information contact the Institutional Repository Librarian at digitalcommons@usu.edu. PDM Watershed Sciences Faculty Publications eutrophication cyanobacteria blue-green algae Nodularia birds waterfowl botulism saline Great Salt Lake nutrients hypereutrophic cyanotoxins HAB Life Sciences text 2011 ftutahsudc 2022-10-27T17:20:12Z Massive bird mortalities due to botulism occur in Farmington and Bear River Bays in the Great Salt Lake. During 2007 we investigated whether there could be a relationship between blooms of the toxic cyanobacteria, Nodularia spumengia and botulism outbreaks in Northern Shoveler ducks and other birds. Our limnological analyses indicated that Farmington Bay was hypereutrophic, with chlorophyll concentrations reaching more than 100 μg/L on most dates in the summer. The extreme eutrophication led to nighttime anoxia, even in sites as shallow as 30 cm. In 2007 cyanotoxin (nodularin) concentrations were moderately high (> 20 μg/L) in May and June, but declined when salinities rose above 50 g/L and Nodularia disappeared. Because of the high salinity, cyanobacterial densities were much lower in 2007 than have been observed previous and subsequent to the study. In 2007 bird mortalities were minimal and there was no major outbreak of botulism. Analyses of American Avocet and Northern Shoveler livers indicated that cyanotoxin levels were below levels of detection. Although cyanotoxin levels in Farmington Bay are well above those that have caused bird and mammal mortalities elsewhere, further analyses of bird mortalities during years of high cyanobacterial blooms and botulismrelated mortalities will be necessary to rigorously test the hypothesis that cyanotoxins initiate the botulism outbreaks. Text Northern Shoveler Shoveler Utah State University: DigitalCommons@USU Farmington ENVELOPE(-120.506,-120.506,55.904,55.904) |
institution |
Open Polar |
collection |
Utah State University: DigitalCommons@USU |
op_collection_id |
ftutahsudc |
language |
unknown |
topic |
eutrophication cyanobacteria blue-green algae Nodularia birds waterfowl botulism saline Great Salt Lake nutrients hypereutrophic cyanotoxins HAB Life Sciences |
spellingShingle |
eutrophication cyanobacteria blue-green algae Nodularia birds waterfowl botulism saline Great Salt Lake nutrients hypereutrophic cyanotoxins HAB Life Sciences Wurtsbaugh, Wayne A. Relationships between eutrophication, cyanobacteria blooms and avian botulism mortalities in the Great Salt Lake |
topic_facet |
eutrophication cyanobacteria blue-green algae Nodularia birds waterfowl botulism saline Great Salt Lake nutrients hypereutrophic cyanotoxins HAB Life Sciences |
description |
Massive bird mortalities due to botulism occur in Farmington and Bear River Bays in the Great Salt Lake. During 2007 we investigated whether there could be a relationship between blooms of the toxic cyanobacteria, Nodularia spumengia and botulism outbreaks in Northern Shoveler ducks and other birds. Our limnological analyses indicated that Farmington Bay was hypereutrophic, with chlorophyll concentrations reaching more than 100 μg/L on most dates in the summer. The extreme eutrophication led to nighttime anoxia, even in sites as shallow as 30 cm. In 2007 cyanotoxin (nodularin) concentrations were moderately high (> 20 μg/L) in May and June, but declined when salinities rose above 50 g/L and Nodularia disappeared. Because of the high salinity, cyanobacterial densities were much lower in 2007 than have been observed previous and subsequent to the study. In 2007 bird mortalities were minimal and there was no major outbreak of botulism. Analyses of American Avocet and Northern Shoveler livers indicated that cyanotoxin levels were below levels of detection. Although cyanotoxin levels in Farmington Bay are well above those that have caused bird and mammal mortalities elsewhere, further analyses of bird mortalities during years of high cyanobacterial blooms and botulismrelated mortalities will be necessary to rigorously test the hypothesis that cyanotoxins initiate the botulism outbreaks. |
format |
Text |
author |
Wurtsbaugh, Wayne A. |
author_facet |
Wurtsbaugh, Wayne A. |
author_sort |
Wurtsbaugh, Wayne A. |
title |
Relationships between eutrophication, cyanobacteria blooms and avian botulism mortalities in the Great Salt Lake |
title_short |
Relationships between eutrophication, cyanobacteria blooms and avian botulism mortalities in the Great Salt Lake |
title_full |
Relationships between eutrophication, cyanobacteria blooms and avian botulism mortalities in the Great Salt Lake |
title_fullStr |
Relationships between eutrophication, cyanobacteria blooms and avian botulism mortalities in the Great Salt Lake |
title_full_unstemmed |
Relationships between eutrophication, cyanobacteria blooms and avian botulism mortalities in the Great Salt Lake |
title_sort |
relationships between eutrophication, cyanobacteria blooms and avian botulism mortalities in the great salt lake |
publisher |
Hosted by Utah State University Libraries |
publishDate |
2011 |
url |
https://digitalcommons.usu.edu/wats_facpub/880 https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1895&context=wats_facpub |
long_lat |
ENVELOPE(-120.506,-120.506,55.904,55.904) |
geographic |
Farmington |
geographic_facet |
Farmington |
genre |
Northern Shoveler Shoveler |
genre_facet |
Northern Shoveler Shoveler |
op_source |
Watershed Sciences Faculty Publications |
op_relation |
https://digitalcommons.usu.edu/wats_facpub/880 https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1895&context=wats_facpub |
op_rights |
Copyright for this work is held by the author. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user. For more information contact the Institutional Repository Librarian at digitalcommons@usu.edu. |
op_rightsnorm |
PDM |
_version_ |
1766146020035526656 |