Blar i NIVA Open Access Archive på forfatter "Hellsten, Seppo"
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A water level drawdown index for aquatic macrophytes in Nordic lakes
Mjelde, Marit; Hellsten, Seppo; Ecke, Frauke (Journal article; Peer reviewed, 2013)Many northern lakes are regulated to enhance hydropower production and flood protection. This bears hydromorphological pressures which are important factors causing lowered ecological status. Water level fluctuation triggers ... -
Bringing the margin to the focus: 10 challenges for riparian vegetation science and management
Rodríguez-González, Patricia M.; Abraham, Eleni; Aguiar, Francisca; Andreoli, Andrea; Baležentienė, Ligita; Berisha, Naim; Bernez, Ivan; Bruen, Michael; Bruno, Daniel; Camporeale, Carlo; Čarni, Andraž; Chilikova-Lubomirova, Mila; Corenblit, Dov; Ćušterevska, Renata; Doody, Tanya; England, Judy; Evette, André; Francis, Robert; Garófano-Gómez, Virginia; González del Tánago, Marta; Gultekin, Yasar Selman; Guyard, Florian; Hellsten, Seppo; Hinkov, Georgi; Jakubínský, Jiří; Janssen, Philippe; Jansson, Roland; Kail, Jochem; Keles, Emine; Kelly-Quinn, Mary; Kidová, Anna; Kiss, Tímea; Kulvik, Mart; La Porta, Nicola; Laslier, Marianne; Latella, Melissa; Lorenz, Stefan; Mandžukovski, Dejan; Manolaki, Paraskevi; Martinez-Fernández, Vanesa; Merritt, David; Michez, Adrien; Milovanović, Jelena; Okruszko, Tomasz; Papastergiadou, Eva; Penning, Ellis; Pielech, Remigiusz; Politti, Emilio; Portela, Ana; Riis, Tenna; Škvorc, Željko; Slezák, Michal; Stammel, Barbara; Stella, John; Stesevic, Danijela; Stupar, Vladimir; Tammeorg, Olga; Tammeorg, Priit; Moe, Therese Fosholt; Urbanič, Gorazd; Villar, Marc; Vogiatzakis, Ioannis; Vrchovsky, Paul; Yousefpour, Rasoul; Zinke, Peggy; Zlatanov, Tzvetan; Dufour, Simon (Peer reviewed; Journal article, 2022)Riparian zones are the paragon of transitional ecosystems, providing critical habitat and ecosystem services that are especially threatened by global change. Following consultation with experts, 10 key challenges were ... -
Ecological status assessment of European lakes: a comparison of metrics for phytoplankton, macrophytes, benthic invertebrates and fish
Solheim, Anne Lyche; Feld, Christian K.; Birk, Sebastian; Phillips, Geoff; Carvalho, Laurence; Morabito, Giuseppe; Mischke, Ute; Willby, Nigel; Søndergaard, Martin; Hellsten, Seppo; Kolada, Agnieszka; Mjelde, Marit; Böhmer, Jürgen; Miler, Oliver; Pusch, Martin T.; Argillier, Christine; Jeppesen, Erik; Lauridsen, Torben L.; Poikane, Sandra (Journal article; Peer reviewed, 2013)Data on phytoplankton, macrophytes, benthic invertebrates and fish from more than 2000 lakes in 22 European countries were used to develop and test metrics for assessing the ecological status of European lakes as required ... -
Estimating nutrient thresholds for eutrophication management: Novel insights from understudied lake types
Poikane, Sandra; Kelly, Martyn G.; Várbíró, Gábor; Borics, Gábor; Erős, Tibor; Hellsten, Seppo; Kolada, Agnieszka; Lukács, Balázs András; Solheim, Anne Lyche; Pahissa López, José; Willby, Nigel J.; Wolfram, Georg; Phillips, Geoff (Peer reviewed; Journal article, 2022)Nutrient targets based on pressure-response models are essential for defining ambitions and managing eutrophication. However, the scale of biogeographical variation in these pressure-response relationships is poorly ... -
Land-use change in a Nordic future towards bioeconomy: A methodological framework to compare and merge stakeholder and expert opinions on qualitative scenarios
Solheim, Anne Lyche; Tolvanen, Anne; Skarbøvik, Eva; Kløve, Bjørn; Collentine, Dennis; Kronvang, Brian; Blicher-Mathiesen, Gitte; Hashemi, Fatemeh; Juutinen, Artti; Hellsten, Seppo; Pouta, Eija; Vermaat, Jan (Peer reviewed; Journal article, 2023)Future development of bioeconomy is expected to change land use in the Nordic countries in agriculture and forestry. The changes are likely to affect water quality due to changes in nutrient run-off. To explore possible ... -
Multitrophic biodiversity patterns and environmental descriptors of sub-Arctic lakes in northern Europe
Lau, Danny C.P.; Christoffersen, Kirsten S.; Erkinaro, Jaakko; Hayden, Brian; Heino, Jani; Hellsten, Seppo; Holmgren, Kerstin; Kahilainen, Kimmo Kalevi; Kahlert, Maria; Karjalainen, Satu Maaria; Karlsson, Jan; Forsström, Laura; Lento, Jennifer; Mjelde, Marit; Ruuhijärvi, Jukka; Sandøy, Steinar; Schartau, Ann Kristin; Svenning, Martin; Vrede, Tobias; Goedkoop, Willem (Peer reviewed; Journal article, 2020)1. Arctic and sub-Arctic lakes in northern Europe are increasingly threatened by climate change, which can affect their biodiversity directly by shifting thermal and hydrological regimes, and indirectly by altering landscape ... -
Potential impacts of a future Nordic bioeconomy on surface water quality
Marttila, Hannu; Lepistö, Ahti; Tolvanen, Anne; Bechmann, Marianne; Kyllmar, Katarina; Juutinen, Artti; Wenng, Hannah Tabea; Skarbøvik, Eva; Futter, Martyn; Kortelainen, Pirkko; Rankinen, Katri; Hellsten, Seppo; Kløve, Bjørn; Kronvang, Brian; Kaste, Øyvind; Solheim, Anne Lyche; Bhattacharjee, Joy; Rakovic, Jelena; de Wit, Heleen (Peer reviewed; Journal article, 2020)Nordic water bodies face multiple stressors due to human activities, generating diffuse loading and climate change. The ‘green shift’ towards a bio-based economy poses new demands and increased pressure on the environment. ... -
Projecting the impacts of the bioeconomy on Nordic land use and freshwater quality and quantity – An overview
Vermaat, Jan; Skarbøvik, Eva; Kronvang, Brian; Juutinen, Artti; Hellsten, Seppo; Kyllmar, Katarina; Solheim, Anne Lyche; Kløve, Bjørn (Peer reviewed; Journal article, 2023)This paper synthesizes a five-year project (BIOWATER) that assessed the effects of a developing bioeconomy on Nordic freshwaters. We used a catchment perspective and combined several approaches: comparative analyses of ...