Abstract:
:Microbial communities drive soil ecosystem function but are also susceptible to environmental disturbances. We investigated whether exposure to manure sourced from cattle either administered or not administered antibiotics affected microbially mediated terrestrial ecosystem function. We quantified changes in microbial community composition via amplicon sequencing, and terrestrial elemental cycling via a stable isotope pulse-chase. Exposure to manure from antibiotic-treated cattle caused: (i) changes in microbial community structure; and (ii) alterations in elemental cycling throughout the terrestrial system. This exposure caused changes in fungal : bacterial ratios, as well as changes in bacterial community structure. Additionally, exposure to manure from cattle treated with pirlimycin resulted in an approximate two-fold increase in ecosystem respiration of recently fixed-carbon, and a greater proportion of recently added nitrogen in plant and soil pools compared to the control manure. Manure from antibiotic-treated cattle therefore affects terrestrial ecosystem function via the soil microbiome, causing decreased ecosystem carbon use efficiency, and altered nitrogen cycling.
journal_name
Ecol Lettjournal_title
Ecology lettersauthors
Wepking C,Badgley B,Barrett JE,Knowlton KF,Lucas JM,Minick KJ,Ray PP,Shawver SE,Strickland MSdoi
10.1111/ele.13390subject
Has Abstractpub_date
2019-12-01 00:00:00pages
2067-2076issue
12eissn
1461-023Xissn
1461-0248journal_volume
22pub_type
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