A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Denitrifying microbial communities along a boreal stream with varying land-use (2019)
Aalto, S. L., Saarenheimo, J., Arvola, L., Tiirola, M., Huotari, J., & Rissanen, A. J. (2019). Denitrifying microbial communities along a boreal stream with varying land-use. Aquatic Sciences, 81(4), Article 59. https://doi.org/10.1007/s00027-019-0654-z
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Aalto, Sanni L.; Saarenheimo, Jatta; Arvola, Lauri; Tiirola, Marja; Huotari, Jussi; Rissanen, Antti J.
Lehti tai sarja: Aquatic Sciences
ISSN: 1015-1621
eISSN: 1420-9055
Julkaisuvuosi: 2019
Volyymi: 81
Lehden numero: 4
Artikkelinumero: 59
Kustantaja: Birkhaeuser Science
Julkaisumaa: Sveitsi
Julkaisun kieli: englanti
DOI: https://doi.org/10.1007/s00027-019-0654-z
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Osittain avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/65171
Tiivistelmä
Streams have an important role in regulating nitrogen (N) transportation from terrestrial ecosystems to downstream waters. Here, we examined how catchment land-use affects potential denitrification rates and the function and composition of denitrifier communities in boreal stream sediments, using stable isotope incubations and qPCR and 454-pyrosequencing targeted on nirS, nirK and nosZ genes. Although land-use influenced the water chemistry as higher nitrite + nitrate (NO x − ) concentration at the agriculture-affected sampling point, sediment organic matter content was found to be the key factor in regulating potential denitrification rates. However, the abundance as well as the diversity and community composition of denitrifying microbes, and genetic N2O production potential (the ratio between nirS + nirK and nosZ gene abundances) were connected to both NO x − and sediment quality. Overall, our results suggest that catchment land-use-driven changes in N and carbon availability affect the denitrification rates, and possibly N2:N2O production ratio, in boreal streams, through altering denitrifier abundance and community composition.
Vapaat asiasanat: valuma-alueet; maankäyttö; denitrifikaatio
Liittyvät organisaatiot
Hankkeet, joissa julkaisu on tehty
- Micro-RIP Functional analysis of uncultivated microbes using radioisotope probing
- Tiirola, Marja
- Euroopan komissio
OKM-raportointi: Kyllä
Raportointivuosi: 2019
JUFO-taso: 1