Browsing HVL Open by Author "Rydgren, Knut"
Now showing items 1-20 of 30
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Advancing restoration ecology: A new approach to predict time to recovery
Rydgren, Knut; Halvorsen, Rune; Töpper, Joachim Paul; Auestad, Inger; Hamre, Liv Norunn; Jongejans, Eelke; Sulavik, Jan (Journal article; Peer reviewed, 2018)1. Species composition is a vital attribute of any ecosystem. Accordingly, ecological restoration often has the original, or “natural,” species composition as its target. However, we still lack adequate methods for predicting ... -
Assessing recovery of alpine spoil heaps by vascular plant, bryophyte, and lichen functional traits
Sulavik, Jan; Auestad, Inger; Halvorsen, Rune; Rydgren, Knut (Peer reviewed; Journal article, 2020)Functional traits are linked to ecosystem processes and services and therefore relevant in recovery assessment. However, traits of bryophytes and lichens, important components of many ecosystems, have received less attention ... -
Assessing restoration success by predicting time to recovery- But by which metric?
Rydgren, Knut; Auestad, Inger; Halvorsen, Rune; Hamre, Liv Norunn; Jongejans, Eelke; Töpper, Joachim Paul; Sulavik, Jan (Peer reviewed; Journal article, 2019)1. Restoration of degraded ecosystems may take decades or even centuries. Accordingly, information about the current direction and speed of recovery provided by methods for predicting time to recovery may give important ... -
Bevaring av genressurser : etablering av urterik slåtteeng : bakgrunn, problemstilling og metoder
Austad, Ingvild; Natlandsmyr, Brith; Rydgren, Knut; Byrkjeland, Liv; Auestad, Inger (HSF notat, Book, 2004)Tradisjonelle urterike slåtteenger med lyskrevende engarter er i dag sterkt truet i det norske landskapet. Friluftsmuseene kan komme til å spille en viktig rolle for å sikre arts- og tidsriktige plantesamfunn inkl. enkeltarter ... -
Bevaring av genressurser: etablering av urterik slåtteeng på Sunnfjord museum, Sogn og Fjordane
Austad, Ingvild; Rydgren, Knut; Sørensen, Knut R.; Byrkjeland, Liv (Rapport, Book, 2007)Rapporten oppsummerer resultatene av et 4 års feltforsøk med å flytte og etablere arts- og urterik engvegetasjon. I tillegg er det undersøkt hvor stor betydning lokalt genetisk materiale har for overleving av arter. Det ... -
Bunching up the background betters bias in species distribution models
Vollering, Julien Martin Marie; Halvorsen, Rune; Auestad, Inger; Rydgren, Knut (Journal article; Peer reviewed, 2019)Sets of presence records used to model species’ distributions typically consist of observations collected opportunistically rather than systematically. As a result, sampling probability is geographically uneven, which may ... -
The dessau grassland experiment-impact of fertilization on forage quality and species assembly in a species-rich alluvial meadow
Dullau, Sandra; Rydgren, Knut; Kirmer, Anita; Jäger, Urs Georg; Meyer, Maren Helen; Tischew, Sabine (Peer reviewed; Journal article, 2021)Since alluvial meadows of river valleys of the Cnidion dubii are protected by the EU Habitats Directive, reconciling farmers’ demands for forage quality with the objective of maintaining them in good conservation status ... -
Distribution and ecology of Trichocolea tomentella in Norway
Rydgren, Knut; Stabbetorp, Odd Egil; Blom, Hans H. (Journal article; Peer reviewed, 2012)The liverwort Trichocolea tomentella is known from 65 localities in southern Norway. Almost half of these are in Hordaland county in Western Norway. T. tomentella has been observed at many localities (42%) in the last ... -
Disturbance severity and community resilience in a boreal forest
Rydgren, Knut; Økland, Rune H.; Hestmark, Geir (Journal article; Peer reviewed, 2004)We studied the resilience of southeastern Norwegian old-growth Picea abies forest floor vegetation to experimental disturbance. Five treatments, differing in depth of removal of vegetation and soil layers and making up a ... -
Eaten but not always beaten: Winners and losers along a red deer herbivory gradient in boreal forest
Hegland, Stein Joar; Rydgren, Knut (Journal article; Peer reviewed, 2016)Questions How does the understorey plant community in a boreal forest respond to variations in red deer herbivory intensity? Do the conclusions depend on the organizational level (taxon, growth form or functional trait) ... -
ECONADA: ECOlogically sustainable implementation of the ‘NAture Diversity Act’ (Naturmangfoldloven) for restoration of disturbed landscapes in Norway Report from the first project year 2011
Aamlid, Trygve; Fjellheim, Siri; Elameen, Abdelhameed; Klemsdal, Sonja; Daugstad, Kristin; Hanslin, Hans Martin; Hovstad, Knut; Hagen, Dagmar; Rydgren, Knut; Rosef, Line (Bioforsk Rapport, Research report, 2012)Rapporten viser status for ECONADA-prosjektet ved årsskiftet 2011/2012. -
ECONADA: ECOlogically sustainable implementation of the ‘NAture Diversity Act’(Naturmangfoldloven) for restoration of disturbed landscapes in Norway Report from the second project year 2012
Aamlid, Trygve; Fjellheim, Siri; Elameen, Abdelhameed; Klemsdal, Sonja; Daugstad, Kristin; Hanslin, Hans Martin; Hovstad, Knut; Hagen, Dagmar; Rydgren, Knut; Rosef, Line (Bioforsk Rapport, Research report, 2013) -
ECONADA: Økologisk og økonomisk bærekraftig implementering av Naturmangfoldloven ved restaurering etter naturinngrep. Rapport fra tredje prosjektår 2013 og status pr. 1. april 2014
Aamlid, Trygve; Fjellheim, Siri; Elameen, Abdelhameed; Klemsdal, Sonja; Daugstad, Kristin; Hanslin, Hans Martin; Hovstad, Knut; Hagen, Dagmar; Rydgren, Knut; Rosef, Line (Bioforsk Rapport, Research report, 2014) -
Environmental Restoration in Hydropower Development — Lessons from Norway
Auestad, Inger; Rydgren, Knut; Nilsen, Yngve (Journal article; Peer reviewed, 2018)Hydropower is expanding globally and is regarded a keymeasure formitigating climate change, but it also results inmajor environmental degradation, both at local scale andmore widely. We can learn lessons about how restoration ... -
Forslag til utvikling av masterprogram i Environmental management (anvendt miljøvitenskap) ved Høgskulen på Vestlandet
Hegland, Stein Joar; Vik, Marte Lange; Scheiber, Thomas; Gillespie, Mette Kusk; Rydgren, Knut; Paetzel, Matthias; Rygg, Bente Johnsen; Wierling, August; Nilsen, Marianne (HVL-rapport;2022/5, Report, 2022) -
How to induce defence responses in wild plant populations? Using bilberry (Vaccinium myrtillus) as example
Seldal, Tarald; Hegland, Stein Joar; Rydgren, Knut; Rodriguez-Saona, Cesar; Töpper, Joachim Paul (Journal article; Peer reviewed, 2017)Inducible plant defense is a beneficial strategy for plants, which imply that plants should allocate resources from growth and reproduction to defense when herbivores attack. Plant ecologist has often studied defense ... -
Junipers enable heavily browsed rowan saplings to escape ungulates in boreal forest
Hegland, Stein Joar; Rydgren, Knut; Lilleeng, Marte Synnøve; Moe, Stein Ragnar; Gillespie, Mark Andrew Kusk (Peer reviewed; Journal article, 2021)Recent increases in ungulate herbivore populations have intensified browsing pressure in northern forest ecosystems. High browsing pressure affects recruitment into tree populations and saplings are among the most impacted ... -
Moss species benefits from breakdown of cyclic rodent dynamics in boreal forests
Rydgren, Knut; Økland, Rune H.; Picó, F. Xavier; Kroon, Hans de (Journal article; Peer reviewed, 2007)Bryophytes have increased in abundance in northern regions, and climate changes have been proposed to account for this change. However, changes in the population dynamics of microtine rodents may also contribute to changes ... -
Multiannual effects of induced plant defenses: Are defended plants good or bad neighbors?
Benevenuto, Rafael Fonseca; Hegland, Stein Joar; Töpper, Joachim Paul; Rydgren, Knut; Moe, Stein Ragnar; Rodriguez-Saona, Cesar; Seldal, Tarald (Journal article; Peer reviewed, 2018)Defenses induced by herbivore feeding or phytohormones such as methyl jasmonate (MeJA) can affect growth, reproduction, and herbivory, not only on the affected individual but also in its neighboring plants. Here, we report ... -
Nest building in titmice Paridae: Selectivity in bryophyte use
Rydgren, Knut; Indreeide, Bendik; Slagsvold, Tore; Lampe, Helene M. (Peer reviewed; Journal article, 2023)In many bird species, reproductive success is dependent on nest quality. However, detailed data on nest composition are scarce, and quantitative analyses have generally used only rough categories, without species identification. ...