Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
2023
Forfattere
Julie Sørlie Paus-Knudsen Henrik Andersen Sveinsson Merete Grung Katrine Borgå Anders NielsenSammendrag
Bumblebees carry out the complex task of foraging to provide for their colonies. They also conduct pollination, an ecosystem service of high importance to both wild plants and entomophilous crops. Insecticides can alter different aspects of bumblebee foraging behavior, including the motivation to leave the hive, finding the right flowers, handling flowers, and the ability to return to the colony. In the present study, we assessed how the neonicotinoid imidacloprid affects bumblebees' foraging behavior after exposure to four different treatment levels, including field-realistic concentrations (0 [control], 1, 10, and 100 μg/L), through sucrose solution over 9 days. We observed the behavior of several free-flying bumblebees simultaneously foraging on artificial flowers in a flight arena to register the bees' complex behavior postexposure. To conduct a detailed assessment of how insecticides affect bumblebee locomotor behavior, we used video cameras and analyzed the recordings using computer vision. We found that imidacloprid impaired learning and locomotor activity level when the bumblebees foraged on artificial flowers. We also found that imidacloprid exposure reduced sucrose solution intake and storage. By using automated analyses of video recordings of bumblebee behavior, we identified sublethal effects of imidacloprid exposure at field-realistic doses. Specifically, we observed negative impacts on consumption of sucrose solution as well as on learning and locomotor activity level. Our results highlight the need for more multimodal approaches when assessing the sublethal effects of insecticides and plant protection products in general.
Forfattere
Ingunn Øvsthus Mitja Martelanc Tatjana Radovanovic Vukajlovic Marko Lesica Lorena Butinar Branka Mozetic Vodopivec Guillaume AntalickSammendrag
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Sammendrag
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Forfattere
Lampros LamprinakisSammendrag
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Forfattere
Ingunn ØvsthusSammendrag
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Forfattere
Urban Česnik Mitja Martelanc Ingunn Øvsthus Tatjana Radovanovic Vukajlović Ahmad Hosseini Branka Mozetič Vodopivec Lorena ButinarSammendrag
Saccharomyces cerevisiae is commonly used for the production of alcoholic beverages, including cider. In this study, we examined indigenous S. cerevisiae and S. uvarum strains, both species commonly found in cider from Hardanger (Norway), for their strain-specific abilities to produce volatile and non-volatile compounds. Small-scale fermentation of apple juice with 20 Saccharomyces strains was performed to evaluate their aroma-producing potential as a function of amino acids (AAs) and other physicochemical parameters under the same experimental conditions. After fermentation, sugars, organic acids, AAs, and biogenic amines (BAs) were quantified using the HPLC–UV/RI system. A new analytical method was developed for the simultaneous determination of nineteen AAs and four BAs in a single run using HPLC–UV with prior sample derivatization. Volatile compounds were determined using HS-SPME-GC-MS. Based on 54 parameters and after the removal of outliers, the nineteen strains were classified into four groups. In addition, we used PLS regression to establish a relationship between aroma compounds and predictor variables (AAs, BAs, organic acids, sugars, hydrogen sulfide (H2S) production, CO2 release) of all 19 strains tested. The results of the VIP show that the main predictor variables affecting the aroma compounds produced by the selected yeasts are 16, belonging mainly to AAs.
Forfattere
Ingunn ØvsthusSammendrag
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Sammendrag
Det er ikke registrert sammendrag
Forfattere
Lampros LamprinakisSammendrag
Purpose The purpose of this article is to introduce identity economics in the individual and organizational level, and highlight its impact on organizational performance, especially when dealing with foundational issues such as sustainability. Design/methodology/approach Identity, sustainability, and the role of personal values in organizational performance are well researched topics that have been typically addressed on different literature streams. The article draws from this diverse literature to introduce identity effects in individual and organizational levels, and further explore how such elements link to the rising popularity of the sustainability discourse and how they can affect operations in an organization. Findings The article highlights the importance of identity effects on organizational operations and performance, especially when dealing with foundational issues such as sustainability perceptions. Originality/value The article builds upon the recent developments in the field of identity economics to introduce identity in the sustainability discourse and explore how (mis)alignment between identity values on sustainability and organizational culture can affect organizational operations and individual performance.
Forfattere
Lampros LamprinakisSammendrag
Det er ikke registrert sammendrag