Blar i Institutt for biologi på forfatter "Hagen, Dagmar"
-
Alien plant species in Svalbard
Roalsø, Erik Roall (Master thesis, 2012)Increased introductions combined with favorable growing conditions may enhance the presence and increase the success of alien plant species in High Arctic settlements. With global warming, the presence and success of alien ... -
Assessing the effect of mitigation efforts to improve vegetation recovery inpowerline construction sites across Norway
Hagen, Dagmar; Mehlhoop, Anne Catriona; Torsæter, E.; Kyrkjeeide, Magni Olsen; Grainger, Matthew; Evju, Marianne (Journal article; Peer reviewed, 2022)Land-use related to technical infrastructure puts great pressure on nature and landscapes globally. We used a screening approach to evaluate vegetation development in 295 construction sites related to upkeeping of the ... -
Assisted recovery of disturbed arctic and alpine vegetation : an integrated approach
Hagen, Dagmar (Doctoral thesis, 2003) -
Best practice—Is natural revegetation sufficient to achieve mitigation goals in road construction?
Mehlhoop, Anne Catriona; Skrindo, Astrid Brekke; Evju, Marianne; Hagen, Dagmar (Journal article; Peer reviewed, 2022)Aims: The area influenced by road construction is large, and measures to re-establish vegetation in disturbed areas are routinely carried out to reduce impacts on biodiversity. However, goals of mitigation measures are ... -
Evaluating mitigation measures to reduce negative impacts of infrastructure construction on vegetation and wildlife
Mehlhoop, Anne Catriona (Doctoral theses at NTNU;2022:48, Doctoral thesis, 2022)Evaluating mitigation measures to reduce negative impacts of infrastructure construction on vegetation and wildlife The human footprint is large and growing worldwide. Land-use related to technical infrastructure ... -
Experimental herbivore exclusion, shrub introduction, and carbon sequestration in alpine plant communities
Sørensen, Mia Vedel; Graae, Bente Jessen; Hagen, Dagmar; Enquist, Brian J.; Nystuen, Kristin Odden; Strimbeck, Richard (Journal article; Peer reviewed, 2018)Background Shrub cover in arctic and alpine ecosystems has increased in recent decades, and is predicted to further increase with climate change. Changes in shrub abundance may alter ecosystem carbon (C) sequestration and ... -
Herbivores reduce seedling recruitment in alpine plant communities
H. Opedal, Øystein; Nystuen, Kristin Odden; Hagen, Dagmar; Holien, Håkon; Sørensen, Mia Vedel; Lang, Simone; Lindmo, Sigrid; Strimbeck, Richard; Graae, Bente Jessen (Peer reviewed; Journal article, 2021)Through changes in climate and other environmental factors, alpine tundra ecosystems are subject to increased cover of erect shrubs, reduced predictability of rodent dynamics and changes in wild and domesticated herbivore ... -
Long-term Effects of Seeding in an Alpine Environment: and a comparison of the effect of native Festuca ovina and non-native Festuca rubra on the establishment of native Betula nana
Hansen, Tor Ivar (Master thesis, 2011)As human induced disturbance in alpine ecosystems have increased, more knowledge is needed about the long-term effects of restoration efforts in such environments. There are benefits with using native species in restoration ... -
Moose in our neighborhood: Does perceived hunting risk have cascading effects on tree performance in vicinity of roads and houses?
Mehlhoop, Anne Catriona; Van Moorter, Bram; Rolandsen, Christer Moe; Hagen, Dagmar; Granhus, Aksel; Eriksen, Rune; Ringsby, Thor Harald; Solberg, Erling Johan (Peer reviewed; Journal article, 2022)Like large carnivores, hunters both kill and scare ungulates, and thus might indirectly affect plant performance through trophic cascades. In this study, we hypothesized that intensive hunting and enduring fear of humans ... -
The Effect of Restoration Treatments on the Regeneration Pathway in Alpine Seed Plants
Hoff, Ellen Torsæter (Master thesis, 2011)Question: How does nutrient addition and seeding affect revegetation of seed plants, and are the effects differing among the stages of the regeneration pathway? Location: Two roads restored in 2002, located in Hjerkinn ... -
Topsoil restoration of three construction sites in central Norway: Comparing restoration outcome by species composition and soil characteristics in relation to three reference communities
Andersen, Markus (Master thesis, 2023)Økologisk restaurering er et verktøy som kan brukes til å lette det uunngåelige presset som bygging av infrastruktur medfører på vårt landskap og natur. I denne studien gjennomførte jeg en analyse av artssammensetning og ...