Now showing items 21-37 of 37

    • Juncus bulbosus nuisance growth in oligotrophic freshwater ecosystems: Different triggers for the same phenomenon in rivers and lakes? 

      Schneider, Susanne Claudia; Moe, Therese Fosholt; Hessen, Dag Olav; Kaste, Øyvind (Journal article; Peer reviewed, 2013)
      Since the 1980s nuisance growth of the aquatic macrophyte Juncus bulbosus has been observed in an increasing number of rivers and lakes in Europe. Freshwater acidification, lake liming, as well as the impact of hydropower ...
    • Kartlegging av begroingsalger E18 Arendal-Tvedestrand 

      Moe, Therese Fosholt; Schneider, Susanne Claudia; Friberg, Nikolai; Vedal, Jens (NIVA-rapport;6918, Research report, 2015)
      I forbindelse med utbygging av E18 mellom Arendal og Tvedestrand var det behov for kartlegging av før-tilstanden i resipientene. I begynnelsen av august 2015, før byggestart, ble derfor 14 lokaliteter fordelt på 5 vassdrag ...
    • Light acclimation in submerged macrophytes: The roles of plant elongation, pigmentation and branch orientation differ among Chara species 

      Schneider, Susanne Claudia; Pichler, Doris E.; Andersen, Tom; Melzer, Arnulf (Journal article; Peer reviewed, 2015)
      Light acclimation plays a fundamental role for plant survival. Using an experimental setup where light could only penetrate from above, we studied light acclimation of Chara intermedia and C. contraria, i.e. submerged ...
    • Nuisance growth of Juncus bulbosus: the roles of genetics and environmental drivers tested in a large-scale survey 

      Moe, Therese Fosholt; Brysting, Anne Krag; Andersen, Tom; Schneider, Susanne Claudia; Kaste, Øyvind; Hessen, Dag Olav (Journal article; Peer reviewed, 2013)
      1. Invasive species can transform aquatic ecosystems, and the nuisance growth of the freshwater macrophyte Juncus bulbosus has become a problem in many lakes and rivers in northern Europe. It affects biodiversity strongly ...
    • Overvåking av krypsiv – resultater 2014-2023 

      Schneider, Susanne Claudia; Demars, Benoît Olivier Laurent (NIVA-rapport;7902-2023, Research report, 2023)
      Ti år med overvåkning av krypsiv ved 9 stasjoner i Tovdalselva, Otra, Mandalselva og Sira-Kvina vassdraget avdekket få konsistente trender i dekningsgrad og plantelengde av krypsiv. Vi kan konkludere med at: (1) Noen steder ...
    • Parameters structuring macrophyte communities in rivers and lakes - Results from a case study in North-Central Poland 

      Szoszkiewicz, Krzysztof; Ciecierska, Hanna; Kolada, Agnieszka; Schneider, Susanne Claudia; Szwabinska, Marta; Ruszczynska, Joanna (Journal article; Peer reviewed, 2014)
    • Plastid DNA sequences and oospore characters of some European taxa of Tolypella section Tolypella (Characeae) identify five clusters, including one new cryptic Tolypella taxon from Sardinia, but they do not coincide with current morphological descriptions 

      Holzhausen, Anja; Nowak, Petra; Ballot, Andreas; Becker, Ralf; Gebert, Jasmina; Gregor, Thomas; Karol, Kenneth G.; Raabe, Uwe; Schneider, Susanne Claudia; Stewart, Nick; Van de Weyer, Klaus; Wilde, Volker; Schubert, Hendrik (Peer reviewed; Journal article, 2023)
      In Europe, the genus Tolypella (Characeae) comprises four to eight Tolypella taxa in sections Rothia and Tolypella that have been distinguished by vegetative morphology and gametangial characters such as antheridial size ...
    • Recovery of benthic algal assemblages from acidification: how long does it take, and is there a link to eutrophication? 

      Schneider, Susanne Claudia; Oulehle, Filip; Krám, Pavel; Hruška, Jakub (Journal article; Peer reviewed, 2018)
      Acidification has adversely affected freshwater ecosystems in many areas, and recovery from acidification is often interrupted by acidic events. We lack detailed information about how benthic algae react to short-term ...
    • Revisiting global diversity and biogeography of freshwater diatoms: New insights from molecular data 

      Chonova, Teofana; Rimet, Frédéric; Bouchez, Agnès; Kahlert, Maria; Schneider, Susanne Claudia; Bailet, Bonnie; Eulin-Garrigue, Anne; Gassiole, Gilles; Monnier, Olivier; Ouattara, Allassane; Rey, Stéphanie; Rhoné, Mathieu; Keck, François (Peer reviewed; Journal article, 2023)
      The distribution of microorganisms has long been assumed to be cosmopolitan and primarily controlled by the environment, but recent studies suggest that microbes may also exhibit strong biogeographical patterns driven by ...
    • Short-term effects of macrophyte removal on aquatic biodiversity in rivers and lakes 

      Misteli, Benjamin; Pannard, Alexandrine; Aasland, Eirin; Harpenslager, Sarah Faye; Motitsoe, Samuel; Thiemer, Kirstine; Llopis, Stéphanie; Coetzee, Julie; Hilt, Sabine; Köhler, Jan; Schneider, Susanne Claudia; Piscart, Christophe; Thiébaut, Gabrielle (Peer reviewed; Journal article, 2022)
      Mass development of macrophytes is an increasing problem in many aquatic systems worldwide. Dense mats of macrophytes can negatively affect activities like boating, fishing or hydropower production and one of the management ...
    • Short-term effects of macrophyte removal on emission of CO2 and CH4 in shallow lakes 

      Harpenslager, S.F.; Thiemer, Kirstine; Levertz, C.; Misteli, B.; Sebola, K.M.; Schneider, Susanne Claudia; Hilt, S.; Köhler, J. (Peer reviewed; Journal article, 2022)
      Mass development of macrophytes in freshwater ecosystems is today considered a worldwide problem and substantial resources are spent on macrophyte removal each year. By removing the dominant primary producer, however, this ...
    • The role of charophytes (Charales) in past and present environments: An overview 

      Schneider, Susanne Claudia; Garcia, Adriana; Martin-Closas, Carles; Chivas, Allan R. (Journal article; Peer reviewed, 2015)
      Charophytes, i.e. extant and fossil members of the order Charales plus the members of the extinct orders Sycidiales and Moellerinales, are closely related to modern land plants. These algae have a complex morphology, and ...
    • Tiltaksrettet overvåking av Glomma ved Borregaard 2023 

      Kemp, Joanna Lynn; Lund, Espen; Kile, Maia Røst; Schneider, Susanne Claudia (NIVA-rapport;7947-2024, Research report, 2024)
      Rapporten presenterer resultater fra undersøkelser av heterotrof begroing i Glomma ved Borregaard i 2023. Hensikten har vært å vurdere effekter av bedriftens utslipp på økologiske forhold i vassdraget, og identifisere ...
    • Understanding temporal variability across trophic levels and spatial scales in freshwater ecosystems 

      Siqueira, Tadeu; Hawkins, Charles P.; Olden, Julian D.; Tonkin, Jonathan; Comte, Lise; Saito, Victor S.; Anderson, Thomas L.; Barbosa, Gedimar P.; Bonada, Núria; Bonecker, Claudia C.; Cañedo-Argüelles, Miguel; Datry, Thibault; Flinn, Michael B.; Fortuño, Pau; Gerrish, Gretchen A.; Haase, Peter; Hill, Matthew J.; Hood, James M.; Huttunen, Kaisa-Leena; Jeffries, Michael J.; Muotka, Timo; O'Donnell, Daniel R.; Paavola, Riku; Paril, Petr; Paterson, Michael J.; Patrick, Christopher J.; Perbiche-Neves, Gilmar; Rodrigues, Luzia C.; Schneider, Susanne Claudia; Straka, Michal; Ruhi, Albert (Peer reviewed; Journal article, 2023)
      A tenet of ecology is that temporal variability in ecological structure and processes tends to decrease with increasing spatial scales (from locales to regions) and levels of biological organization (from populations to ...
    • Undersøkelser av vannvegetasjon i Svanevatn 

      Mjelde, Marit; Schneider, Susanne Claudia (NIVA-rapport;7548, Research report, 2020)
      Svanevatn ligger i Nautå naturreservat og er en utvalgt naturtype vernet iht. Naturmangfoldloven. Hensikten med prosjektet har vært å kartlegge vannvegetasjonen og vurdere om utbyggingen av flystasjonen på Evenes har ...
    • Vannplanter i Otra oppstrøms Brokke før og nå, og hva det betyr for problemvekst av krypsiv 

      Schneider, Susanne Claudia; Demars, Benoît Olivier Laurent (NIVA-rapport;7484, Research report, 2020)
      I denne rapporten sammenstiller vi historiske data om utviklingen av vannplanter oppstrøms Brokke, rapporterer resultater fra en kartlegging av vannplanter i august 2019, og tolker resultatene i lys av det overordnete ...
    • Økologisk tilstand i Norddalselva i Vanylven kommune i 2021/2022 

      Persson, Jonas; Thrane, Jan-Erik; Schneider, Susanne Claudia (NIVA-rapport;7823-2023, Research report, 2023)
      Det ble i 2021/2022 gjennomført biologiske og vannkjemiske undersøkelser i Norddalselva i Møre. Hensikten var å vurdere økologisk tilstand og graden av eutrofipåvirkning, og hvorvidt reguleringen av vassdraget har bidratt ...