Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Jouni Lehtoranta"'
Autor:
Kristian Spilling, Kalle Olli, Jouni Lehtoranta, Anke Kremp, Letizia Tedesco, Tobias Tamelander, Riina Klais, Heikki Peltonen, Timo Tamminen
Publikováno v:
Frontiers in Marine Science, Vol 5 (2018)
The Baltic Sea is affected by a range of human induced environmental pressures such as eutrophication. Here we synthesize the ongoing shift from diatom dominance toward more dinoflagellates in parts of the Baltic Sea during the spring bloom and its p
Externí odkaz:
https://doaj.org/article/f0d3662a349746599330e12c713719f7
Autor:
Risto Uusitalo, Petri Ekholm, Jouni Lehtoranta, Aleksandar Klimeski, Olli Konstari, Riku Lehtonen, Eila Turtola
Publikováno v:
Agricultural and Food Science, Vol 21, Iss 3 (2012)
Phosphate barriers may mitigate dissolved P losses from critical source areas. We studied P retention of industrially produced Ca–Fe oxide as potential P barrier material. In batch tests with 1 mg l−1 P solution, P retention was 85% efficient in
Externí odkaz:
https://doaj.org/article/b823fcd05b7e42b487364823679cc260
Autor:
Jouni Lehtoranta, Jørgen Bendtsen, Christer Lännergren, Erkki Saarijärvi, Magnus Lindström, Heikki Pitkänen
Highlights • Lab-test showed efficient entrainment of bottom water and moderate oxygenation • In salt-stratified basin ventilation oxidized and removed H2S and nutrients • Induced stratification erosion promoted inflow oxidation in salt-stratif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::033e591a667cfc6256312b2596812f78
http://hdl.handle.net/10138/342990
http://hdl.handle.net/10138/342990
Publikováno v:
The Science of the total environment. 748
Sulfate (SO42−) affects the cycling of ecologically important substances, such as carbon, nutrients and metals, but the contribution of anthropogenic activities in sulfate load entering aquatic systems is poorly known. We calculate specific sulfate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6d2e8d69987d8cd954e3aeb303d68da
https://pubmed.ncbi.nlm.nih.gov/33113678
https://pubmed.ncbi.nlm.nih.gov/33113678
Autor:
Caroline Björnerås, Peeter Nõges, Gunnhild Riise, James A. Rusak, Külli Kangur, Mark O. Gessner, Hjalmar Laudon, Gesa A. Weyhenmeyer, Don Monteith, Janis Sire, Shannon Sterling, Noah R. Lottig, Tiina Nõges, Jouni Lehtoranta, Pirkko Kortelainen, Chris D. Evans, Hans-Peter Grossart, Ilga Kokorite, Filip Oulehle, Antti Räike, Emma S. Kritzberg
Publikováno v:
Global Biogeochemical Cycles. 31:1488-1500
Recent reports of increasing iron (Fe) concentrations in freshwaters are of concern, given the fundamental role of Fe in biogeochemical processes. Still, little is known about the frequency and geographical distribution of Fe trends or about the unde
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa90f2e8f02adc200f86c1052fea5a4c
https://doi.org/10.1002/2017gb005749
https://doi.org/10.1002/2017gb005749
Autor:
Harri Kuosa, Antti Räike, Heikki Pitkänen, Oleg P. Savchuk, Pirkko Kauppila, Mika Raateoja, Kim Dahlbo, Jouni Lehtoranta, Jüri Elken
Publikováno v:
Journal of Marine Systems. 171:4-20
The loading of P into the Gulf of Finland has decreased markedly, but no overall trend in the concentration of P has been observed in the open Gulf, where the concentrations of both inorganic N and P still have a pronounced inter-annual variability.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7536b46a54a168a8ad02a8f1ee51189
http://juuli.fi/Record/0285737117
http://juuli.fi/Record/0285737117
Publikováno v:
Science of the Total Environment. :946-958
Climate change influences the volume and seasonal distribution of runoff in the northern regions. Here, we study how the seasonal variation in the runoff affects the concentrations and export of terminal electron acceptors (i.e. TEAs: NO3, Mn, Fe and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec8970ec462dde434e3336d6ca84eff8
http://juuli.fi/Record/0285720817
http://juuli.fi/Record/0285720817
Publikováno v:
Geomicrobiology Journal. 34(5):385-399
The ability of different sea bottom types to recover from oil contamination under oxic and anoxic conditions is poorly known in the brackish Baltic Sea. We carried out microcosm experiments to examine the capacity of iron–manganese concretions and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::499205cba6a01aca5bc390ba0f733f1b
https://doi.org/10.1080/01490451.2016.1197987
https://doi.org/10.1080/01490451.2016.1197987
Publikováno v:
Journal of Marine Systems. 171:89-100
We estimated the efflux of dissolved silicon (DSi) from sediments in the Gulf of Finland and compared it to sedimentation fluxes, burial of Si and existing data on Si loading and stocks, reassessing the reliability of existing Si budgets. Benthic flu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::100310a4bf4e2b40362a472b4bb6ec21
http://juuli.fi/Record/0285737717
http://juuli.fi/Record/0285737717
Publikováno v:
Ecological Economics. 137:13-19
To successfully combat eutrophication caused by agricultural P loads, we need to understand how various forms of P respond to mitigation measures and thus how they contribute to algal growth. Failure to balance mitigation measures targeting dissolved
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d4d622aec744cc7852c4e0987f293928
http://juuli.fi/Record/0285723917
http://juuli.fi/Record/0285723917