A5076258181- Microbial Community Ecology and Physiology
- Research in Social Sciences
- Marine and coastal ecosystems
- Bacteriophages and microbial interactions
- Microbial bioremediation and biosurfactants
- Aquaculture disease management and microbiota
- Marine Biology and Ecology Research
- Atmospheric and Environmental Gas Dynamics
- SARS-CoV-2 detection and testing
- Aquatic Ecosystems and Phytoplankton Dynamics
- Hydrocarbon exploration and reservoir analysis
- Marine Bivalve and Aquaculture Studies
- Mathematics, Computing, and Information Processing
- Cervical Cancer and HPV Research
- Soil Carbon and Nitrogen Dynamics
- Protist diversity and phylogeny
- Geochemistry and Elemental Analysis
- Toxic Organic Pollutants Impact
- Neuroscience, Education and Cognitive Function
- Paleontology and Stratigraphy of Fossils
- Marine Toxins and Detection Methods
- Education and Critical Thinking Development
- Metabolomics and Mass Spectrometry Studies
- Library Science and Information Systems
- Coastal wetland ecosystem dynamics
Alaska SeaLife Center
2023
University of Oulu
2017
Golder Associates (Canada)
2014
Finnish Environment Institute
1997-2008
Abstract This study is the first report of saxitoxin in cyanobacterial blooms Finland. Bloom samples ( n = 50) were collected from Finnish freshwater sites during summer months 2002 and 2003. These screened for presence paralytic shellfish toxins (PSTs) using Jellett rapid PSP screening test. Samples testing positive PSTs 7) further analyzed with saxiphilin‐ voltage‐gated sodium channel [ 3 H]‐STX–binding radioreceptor assays liquid chromatography fluorescence mass spectrometric analysis....
Viruses are active members of the microbial community in natural waters but little is known about factors that regulate their activity and production. In this study we have investigated effects increased availability organic nutrients inorganic phosphate on activity, elemental composition, structure virus production a bacterial community. The fraction cells as estimated from microautoradiography assimilating 3H-labeled thymidine ranged 0–22%, changes composition indicated more than 90% were...
The short term dynamics of virus abundance in coastal sea water was investigated by frequent sampling open ecosystems and incubated bottles situ. Sampling intervals were 6–10 min. viral showed significant temporal fluctuations both situ the it changed some cases a factor 2–4 within 10–20 Laboratory incubations that production release viruses wre not induced or stimulated nutrient addition, high light intensities transient increase temperatures ca. 10°C. Our interpretation these results is...
In this study, we evaluated whether the abundance of functional gene nahAc reflects aerobic naphthalene degradation potential in subsurface and surface samples taken from three petroleum hydrocarbon contaminated sites southern Finland. The type contamination at varied lightweight diesel oil to high molecular weight residuals crude oil. Samples were collected both oxic anoxic soil layers. dioxygenase was quantified using a replicate limiting dilution-polymerase chain reaction (RLD-PCR) method...
Polyclonal antibodies against nine different bacteria isolated from Lake Saelenvannet in western Norway were produced, and the population dynamics of these strains lake monitored through two spring seasons by immunofluorescence staining. The total counts varied over time space 1.5 x 10(6) to 10(7) cells ml-1. specific range 10(3) 10(4) ml-1 or less; sum, they generally made up less than 1% bacterial community. Some populations showed significant changes abundance, with blooms lasting 1 3...
A 3 week enclosure experiment was carried out at the Gulf of Finland, Baltic Sea. After additions inorganic nutrients [nitrogen (N) + phosphorus (P)] and a carbon source (sucrose), we followed bacterial, viral heterotrophic nanoflagellate (HNF) abundances, as well bacterial production frequency bacteria visibly infected with viruses. Furthermore, decay rate virus particles measured three times during from KCN-treated water samples. Bacterial mortality caused by lysis estimated using rates...
AME Aquatic Microbial Ecology Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 11:127-133 (1996) - doi:10.3354/ame011127 Abundant populations of iron and manganese sequestering bacteria in coastal water Heldal M, Fagerbakke KM, Tuomi P, Bratbak G It has recently been suggested that is a limiting factor for phytoplankton production nutrient-rich seas. Here we report on group marine surface waters...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 153:59-66 (1997) - doi:10.3354/meps153059 Bacterial carbon production in northern Baltic: a comparison of thymidine incorporation and FDC based methods Tuomi P open Gulf Finland was estimated by 3H-thymidine rate (TTI) frequency dividing cells (FDC), counted transmission electron microscopy (TEM). To relate...
A novel papillomavirus (PV) associated with hyperplastic nodules scattered over the muco-cutaneous border of oral cavity a dead, wild, subadult northern sea otter Enhydra lutris kenyoni (NSO) in 2004 Homer, Alaska, USA, was genetically characterized. Primers for amplification 2 large overlapping DNA fragments that contained complete genome NSO PV were designed. Sanger methodology generated sequences from which new specific primers designed primer-walking approach. The consists 8085...
FL Pirjo Tuomen kirjallisuuden alaan kuuluva väitöskirja Kaunokirjallisuus yleiselle kirjastolle haasteena, rasitteena ja mahdollisuutena. Historiallis-argumentatiivinen tarkastelu suomalaisen yleisen kirjastolaitoksen suhteesta kaunokirjallisuuteen kirjalliseen järjestelmään (Fiction as a challenge, burden, and possibility for the Finnish public library. A historical-argumentative investigation about relationship between library, fiction, literary system) tarkastettiin 5.5.2017 Oulun...

 From civic educator to a market place - the institutional definitions of public libraries’ tasks and its development during Finnish independence
 The library system can be divided into four phases. During first two, Swedish reign period Autonomy, was mainly for upper classes academic use. trend strengthen as key actor in educational newborn independent Finland meant that became an institution. This started break down from 1990’s onward with implementation new management...
Pirjo Tuomen kommentteja Outi Vuorenrinteelle koskien Vuorenrinteen väitöskirjaa.