Species distribution and temperature relations of coliform populations from uninhabited watershed areas
Abstract Fifty‐seven water samples in all were collected in a northern (latitude 69° N) and in a southern (latitude 61° N) region from waters in the “natural state.” Coliform populations were studied by collecting random isolates of typical sheen colonies from Endo LES 35° C cultivations. The maximu...
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crwiley:10.1002/tox.2540040304 2024-06-02T08:15:03+00:00 Species distribution and temperature relations of coliform populations from uninhabited watershed areas Niemelä, Seppo I. Niemi, R. Maarit 1989 http://dx.doi.org/10.1002/tox.2540040304 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Ftox.2540040304 https://onlinelibrary.wiley.com/doi/pdf/10.1002/tox.2540040304 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Toxicity Assessment volume 4, issue 3, page 271-280 ISSN 0884-8181 journal-article 1989 crwiley https://doi.org/10.1002/tox.2540040304 2024-05-03T11:44:04Z Abstract Fifty‐seven water samples in all were collected in a northern (latitude 69° N) and in a southern (latitude 61° N) region from waters in the “natural state.” Coliform populations were studied by collecting random isolates of typical sheen colonies from Endo LES 35° C cultivations. The maximum growth temperatures of 607 strains were measured. Identification of 372 isolates was attempted by using the API 20EC and 20E systems. Eleven species were found—seven of them common to both regions. Twenty‐nine percent of the strains could not be identified. The most frequent species was Serratia fonticola (26% of all strains tested), the second was Hafnia alvei (14%), and the third Enterobacter cloacae (13%; only encountered in the north). The strains able to grow at or above 44. 5°C were identified as Escherichia coli. In the southern region, environmental coliforms ( S. fonticola and H. alvei ) so completely outnumbered E. coli that it was met only once among the 438 total coliform isolates, whereas 23% of the isolates from the northern region were E. coli. Typical pipeline/biofilm coliform types were not found, with the exception of numerous E. cloacae strains in the most remote lake samples collected and one Klebsiella oxytoca in a brook. The fecal coliforms (all of them E. coli ) were concluded to be of recent animal origin. The standard fecal coliform analysis was estimated to function extremely well in the pristine waters of our subarctic climate. The total coliform analysis has no indicator value under these circumstances. Article in Journal/Newspaper Subarctic Wiley Online Library Hafnia ENVELOPE(-6.770,-6.770,62.010,62.010) Remote Lake ENVELOPE(-70.700,-70.700,70.996,70.996) Toxicity Assessment 4 3 271 280 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Fifty‐seven water samples in all were collected in a northern (latitude 69° N) and in a southern (latitude 61° N) region from waters in the “natural state.” Coliform populations were studied by collecting random isolates of typical sheen colonies from Endo LES 35° C cultivations. The maximum growth temperatures of 607 strains were measured. Identification of 372 isolates was attempted by using the API 20EC and 20E systems. Eleven species were found—seven of them common to both regions. Twenty‐nine percent of the strains could not be identified. The most frequent species was Serratia fonticola (26% of all strains tested), the second was Hafnia alvei (14%), and the third Enterobacter cloacae (13%; only encountered in the north). The strains able to grow at or above 44. 5°C were identified as Escherichia coli. In the southern region, environmental coliforms ( S. fonticola and H. alvei ) so completely outnumbered E. coli that it was met only once among the 438 total coliform isolates, whereas 23% of the isolates from the northern region were E. coli. Typical pipeline/biofilm coliform types were not found, with the exception of numerous E. cloacae strains in the most remote lake samples collected and one Klebsiella oxytoca in a brook. The fecal coliforms (all of them E. coli ) were concluded to be of recent animal origin. The standard fecal coliform analysis was estimated to function extremely well in the pristine waters of our subarctic climate. The total coliform analysis has no indicator value under these circumstances. |
format |
Article in Journal/Newspaper |
author |
Niemelä, Seppo I. Niemi, R. Maarit |
spellingShingle |
Niemelä, Seppo I. Niemi, R. Maarit Species distribution and temperature relations of coliform populations from uninhabited watershed areas |
author_facet |
Niemelä, Seppo I. Niemi, R. Maarit |
author_sort |
Niemelä, Seppo I. |
title |
Species distribution and temperature relations of coliform populations from uninhabited watershed areas |
title_short |
Species distribution and temperature relations of coliform populations from uninhabited watershed areas |
title_full |
Species distribution and temperature relations of coliform populations from uninhabited watershed areas |
title_fullStr |
Species distribution and temperature relations of coliform populations from uninhabited watershed areas |
title_full_unstemmed |
Species distribution and temperature relations of coliform populations from uninhabited watershed areas |
title_sort |
species distribution and temperature relations of coliform populations from uninhabited watershed areas |
publisher |
Wiley |
publishDate |
1989 |
url |
http://dx.doi.org/10.1002/tox.2540040304 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Ftox.2540040304 https://onlinelibrary.wiley.com/doi/pdf/10.1002/tox.2540040304 |
long_lat |
ENVELOPE(-6.770,-6.770,62.010,62.010) ENVELOPE(-70.700,-70.700,70.996,70.996) |
geographic |
Hafnia Remote Lake |
geographic_facet |
Hafnia Remote Lake |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
Toxicity Assessment volume 4, issue 3, page 271-280 ISSN 0884-8181 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/tox.2540040304 |
container_title |
Toxicity Assessment |
container_volume |
4 |
container_issue |
3 |
container_start_page |
271 |
op_container_end_page |
280 |
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1800739118891663360 |