Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2021
Authors
Björn Ringselle Benedikte Watne Oliver Therese With Berge Inger Sundheim Fløistad Liv Berge Lars Olav BrandsæterAbstract
Many herbaceous perennial plant species gain significant competitive advantages from their underground creeping storage and proliferation organs (CR), making them more likely to become successful weeds or invasive plants. To develop efficient control methods against such invasive or weedy creeping perennial plants, it is necessary to identify when the dry weight minimum of their CR (CR DWmin) occurs. Moreover, it is of interest to determine how the timing of CR DWmin differs in species with different light requirements at different light levels. The CR DWmin of Aegopodium podagraria, Elymus repens and Sonchus arvensis were studied in climate chambers under two light levels (100 and 250 μmol m−2 s−1), and Reynoutria japonica, R. sachaliensis and R. × bohemica under one light level (250 μmol m−2 s−1). Under 250 μmol m−2 s−1, the CR DWmin occurred before one fully developed leaf in R. sachaliensis, around 1–2 leaves in A. podagraria and E. repens and around four leaves in S. arvensis, R. japonica and R. × bohemica. In addition to reducing growth in all species, less light resulted in a higher shoot mass fraction in E. repens and S. arvensis, but not A. podagraria; and it delayed the CR DWmin in E. repens, but not S. arvensis. Only 65% of planted A. podagragra rhizomes produced shoots. Beyond the CR DWmin, Reynoutria spp. reinvested in their old CR, while the other species primarily produced new CR. We conclude that A. podagraria, R. sachaliensis and E. repens are vulnerable to control efforts at an earlier developmental stage than S. arvensis, R. japonica and R. × bohemica.
Authors
Habtamu AlemAbstract
No abstract has been registered
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No abstract has been registered
Authors
Manuel Helbig Tatjana Zivkovic Pavel Alekseychik Mika Aurela Eugénie S. Euskirchen Lawrence B. Flanagan Timothy J. Griffis Carole Helfter Takashi Hirano Elyn Humphreys Gerard Kiely Randall Kolka Paul Leahy Annalea Lohila Ivan Mammarella Masahito Ueyama Mats B. Nilsson Frans-Jan W. Parmentier Matthias Peichl Janne Rinne Daniel T. Roman Oliver Sonnentag Eeva-Stiina Tuittila Timo Vesala Patrik Vestin Simon Weldon Per WeslienAbstract
No abstract has been registered
Authors
Katja Weigel Lisa Bock Bettina K. Gier Axel Lauer Mattia Righi Manuel Schlund Kemisola Adeniyi Bouwe Andela Enrico Arnone Peter Berg Louis-Philippe Caron Irene Cionni Susanna Corti Niels Drost Alasdair Hunter Llorenç Lledó Christian Wilhelm Mohr Aytaç Paçal Núria Pérez-Zanón Valeriu Predoi Marit Sandstad Jana Sillmann Andreas Sterl Javier Vegas-Regidor Jost Von Hardenberg Veronika EyringAbstract
No abstract has been registered
Authors
Håvard Steinshamn Kristina Holmström Giorgia Riuzzi Anna Hessle Elisabet Nadeau Finn Walland Flaviana Gottardo Gillian ButlerAbstract
For nokre av driftsystema vi granska i SusCatt-prosjektet undersøkte vi nærmare korleis ein overgang til meir grovfôrbasert fôring kan ha å seie for lønnsemda. Fem SusCatt-system blei vurdert, inkludert arbeidet i Sverige der en samanlikna effekt av rase og fôrstyrke på storfekjøttproduksjon av både oksar og kastratar frå mjølkekyr, og i Storbritannia med rein grovfôrbasert storfekjøttproduksjon frå ammekyr. I mjølkeproduksjonen, blei effekt av kraftfôrnivå på lønnsemd studert ved bruk av husdyrkontrolldata i Noreg og for italienske gardar effekten av å redusere mengde maissurfôr i rasjonen...
Abstract
No abstract has been registered
Authors
Tania Gomes Agathe Bour Claire Coutris Ana Catarina Almeida Inger Lise Nerland Bråte Raoul Wolf Michael S. Bank Amy LusherAbstract
Plastic pollution is a widespread environmental problem that is currently one of the most discussed issues by scientists, policymakers and society at large. The potential ecotoxicological effects of plastic particles in a wide range of organisms have been investigated in a growing number of exposure studies over the past years. Nonetheless, many questions still remain regarding the overall effects of microplastics and nanoplastics on organisms from different ecosystem compartments, as well as the underlying mechanisms behind the observed toxicity. This chapter provides a comprehensive literature review on the ecotoxicological impacts of microplastics and nanoplastics in terrestrial and aquatic organisms in the context of particle characteristics, interactive toxicological effects, taxonomic gradients and with a focus on synergies with associated chemicals. Overall, a total of 220 references were reviewed for their fulfilment of specific quality criteria (e.g. experimental design, particle characteristics, ecotoxicological endpoints and findings), after which 175 were included in our assessment. The analysis of the reviewed studies revealed that organisms’ responses were overall influenced by the physicochemical heterogeneity of the plastic particles used, for which distinct differences were attributed to polymer type, size, morphology and surface alterations. On the other hand, little attention has been paid to the role of additive chemicals in the overall toxicity. There is still little consistency regarding the biological impacts posed by plastic particles, with observed ecotoxicological effects being highly dependent on the environmental compartment assessed and specific morphological, physiological and behavioural traits of the species used. Nonetheless, evidence exists of impacts across successive levels of biological organization, covering effects from the subcellular level up to the ecosystem level. This review presents the important research gaps concerning the ecotoxicological impacts of plastic particles in different taxonomical groups, as well as recommendations on future research priorities needed to better understand the ecological risks of plastic particles in terrestrial and aquatic environments.
Abstract
No abstract has been registered
Authors
Hilde Karine WamAbstract
Heavier rainstorms, more landslides, the winds howling more often, a longer summer… The good or bad of a warming climate! In this educational tool kit, your pupils will learn about northern climates, and possibly even sense it. Not the least, they will learn about climate changes in the north, which are not quite the same as in the south.