硝基螺
农业
污染
水质
奶牛养殖
粪大肠菌群
环境科学
最可能数
生物
地理
兽医学
微生物
生态学
细菌
遗传学
医学
作者
Arturo Aburto‐Medina,Esmaeil Shahsavari,Scott Salzman,Andrew M. Kramer,Andrew S. Ball,Graeme Allinson
标识
DOI:10.1016/j.ecoenv.2019.01.112
摘要
We assessed the water quality of south-west Victorian rivers impacted by the dairy industry using traditional water quality assessment together with culture-dependent (colilert/enterolert) and also culture-independent (next generation sequencing) microbial methods. The aim of the study was to identify relationships/associations between dairy farming intensity and water contamination. Water samples with high total and faecal coliforms (>1000 MPN cfu/100 ml), and with high nitrogen levels (TN) were observed in zones with a high proportion of dairy farming. Members of the genus Nitrospira, Rhodobacter and Rhodoplanes were predominant in such high cattle density zones. Samples from sites in zones with lower dairy farming activities registered faecal coliform numbers within the permissible limits (<1000 MPN cfu/100 ml) and showed the presence of a wide variety of microorganisms. However, no bacterial pathogens were found in the river waters regardless of the proportion of cattle. The data suggests that using the spatially weighted proportion of land used for dairy farming is a useful way to target at-risk sub-catchments across south west Victoria; further work is required to confirm that this approach is applicable in other regions.
科研通智能强力驱动
Strongly Powered by AbleSci AI