A comparison of soil Staphylococcus aureus and fecal indicator bacteria concentrations across land uses in a Hawaiian watershed.
Journal
Journal of environmental quality
ISSN: 1537-2537
Titre abrégé: J Environ Qual
Pays: United States
ID NLM: 0330666
Informations de publication
Date de publication:
Sep 2022
Sep 2022
Historique:
received:
28
01
2022
accepted:
24
05
2022
pubmed:
3
6
2022
medline:
5
10
2022
entrez:
2
6
2022
Statut:
ppublish
Résumé
Staphylococcus aureus, methicillin-resistant S. aureus (MRSA), and fecal indicator bacteria (FIB; Enterococcus spp., Clostridium perfringens) concentrations increase in Hawaiian streams and estuaries following storms and pose a health threat to recreational water users. To reduce this risk, watershed bacteria sources need to be identified for management actions. This study's goals were to identify soil bacteria sources among different land uses and to determine if their concentrations were associated with different soil properties. Soil samples were collected three times on 24 d between October 2017 and November 2018 at urban, agriculture, and native-forest land uses in the Hilo Bay watershed, Hawai'i Island, Hawai'i. Soil bacteria concentrations were quantified using culturing techniques with selective media. Staphylococcus aureus, MRSA, and FIB were present in soil from all land uses. Bacteria concentrations were highest in urban soils and lowest in native-forest soils, with up to three orders of magnitude differences among land uses. Staphylococcus aureus, MRSA, and FIB soil concentrations were positively correlated with each other and with soil temperature and pH, but inversely correlated with soil moisture and organic matter content. Our results demonstrate that soils are a watershed bacteria source and that some soil properties affect their concentrations. Identifying these sources is critical for implementing management actions to reduce pathogen loads to estuaries and transmission to recreational water users.
Substances chimiques
Soil
0
Water
059QF0KO0R
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
916-929Subventions
Organisme : U.S. Geological Survey
ID : G12AC00003
Organisme : National Science Foundation
ID : 0424566
Organisme : National Science Foundation
ID : 1005186
Organisme : National Science Foundation
ID : 1461301
Organisme : National Science Foundation
ID : 1826864
Organisme : National Institute of Health
ID : R25GM11347
Organisme : Kamehameha Schools
Organisme : Hau oli Mau Loa Foundation
Informations de copyright
© 2022 The Authors. Journal of Environmental Quality © 2022 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.
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