Search results for "rannikkoalueet"
showing 4 items of 4 documents
Seasonal cycle of benthic denitrification and DNRA in the aphotic coastal zone, northern Baltic Sea
2020
Current knowledge on the seasonality of benthic nitrate reduction pathways in the aphotic, density stratified coastal zone of the Baltic Sea is largely based on data from muddy sediments, neglecting the potential contribution of sandy sediments. To gain a more comprehensive understanding of seasonality in this part of the Baltic Sea coast, we measured rates of benthic denitrification, anammox and dissimilatory nitrate reduction to ammonium (DNRA) monthly in the ice-free period of 2016 in both sandy and muddy aphotic sediments, northwestern Gulf of Finland. No anammox was observed. The seasonal cycle of denitrification in both sediment types was related to the hydrography-driven development …
Enrichment of Bacterioplankton Able to Utilize One-Carbon and Methylated Compounds in the Coastal Pacific Ocean
2018
International audience; Understanding the temporal variations and succession of bacterial communities involved in the turnover of one-carbon and methylated compounds is necessary to better predict bacterial impacts on the marine carbon cycle and air-sea carbon fluxes. The ability of the local bacterioplankton community to exploit one-carbon and methylated compounds as main source of bioavailable carbon during a productive and less productive period was assessed through enrichment experiments. Surface seawater was amended with methanol and trimethylamine-N-oxide (TMAO), and bacterial abundance, production, oxygen consumption, as well as methanol turnover and growth rates of putative methylot…
Merikarjalan idea
2022
Merikarjala tarkoittaa Karjalankannaksen ja Kymenlaakson rannikkoalueita sekä Suomenlahden ulkosaaria. Seutu on ollut kautta aikain läpikulkumaata, jonka kautta Suomen aluetta on asutettu ja jonka kautta uusia kulttuurivaikutteita on kulkeutunut Karjalaan ja Suomeen. Sen keskus on ollut kosmopoliittinen kaupan ja kulttuurin kaupunki Viipuri. Merikarjalan alueellista kokonaisuutta hahmottamalla avautuu uudenlaisia näkökulmia karjalaisuuteen ja Suomenlahden itäosan rannikko- ja saaristoalueen monikulttuurisuuteen, talouselämään ja historiaan. VSKS:n toimitteen 24 artikkelit luovat näkymiä seudun arkipäivän historiaan, kaupankäyntiin, merenkulkuun ja lastaustyöhön, Venäjä-yhteyksiin, naisten j…
Questing abundance of adult taiga ticks Ixodes persulcatus and their Borrelia prevalence at the north-western part of their distribution
2020
Background Because ixodid ticks are vectors of zoonotic pathogens, including Borrelia, information of their abundance, seasonal variation in questing behaviour and pathogen prevalence is important for human health. As ticks are invading new areas northwards, information from these new areas are needed. Taiga tick (Ixodes persulcatus) populations have been recently found at Bothnian Bay, Finland. We assessed seasonal variation in questing abundance of ticks and their pathogen prevalence in coastal deciduous forests near the city of Oulu (latitudes 64–65°) in 2019. Methods We sampled ticks from May until September by cloth dragging 100 meters once a month at eight study sites. We calculated a…