Two microbiological parameters: total bacterial number (TBN) and biomass (BBM) were studied in two Arctic fjords: Hornsund and Kongsfjorden. Samples were collected from three sampling points in each fjord, from various water depth layers: from the surface to 75 m depth. Total bacterial number and biomass were examined using the DAPI staining and direct count method. The greater amount of bacteria, as well as highest bacterial biomass were observed in the colder fjord Hornsund, located on the southern part of Spitsbergen. Local TBN maximum was found at a depth of 15 m at station KG2, which corresponds to the presence of pycnocline. Better adaptation of Arctic bacteria to the low water temperatures and availability of substrates coming from the bird colonies may explain the higher TBN and BBM in Hornsund. Moreover, greater phytoplankton abundance in Hornsund may have an impact on better feeding conditions. Detected increased amounts of particulate inorganic matter also provides favourable habitat for bacterial consortia.
Autorzy
Informacje dodatkowe
- DOI
- Cyfrowy identyfikator dokumentu elektronicznego link otwiera się w nowej karcie 10.1007/978-3-319-14283-8
- Kategoria
- Aktywność konferencyjna
- Typ
- publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
- Język
- angielski
- Rok wydania
- 2015
