Blar i Brage NMBU på forfatter "Eldegard, Katrine"
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The conservation value of power-line clearings for native insect-pollinated plants and wild bees in boreal forest landscapes
Steinert, Mari (PhD Thesis;2020:31, Doctoral thesis, 2020)Worldwide declines in wild pollinators are threatening the provision of vital pollination functions and services to both native plant communities and crops. Habitat loss due to human land use changes is identified as one ... -
Crop pollination by insects in small-scale agroforestry farming in Tanzania
Sawe, Thomas Corodius (PhD Thesis;2019:101, Doctoral thesis, 2019)Context. The decline of pollinating insects worldwide threatens pollination services for wild angiosperms and important food crops. The importance of insect pollination services for food production has been documented for ... -
Crop Pollination in Small-Scale Agriculture in Tanzania: Household Dependence, Awareness and Conservation
Sawe, Thomas; Nielsen, Anders; Eldegard, Katrine (Peer reviewed; Journal article, 2020)Global economic value of agriculture production resulting from animal pollination services has been estimated to be $235–$577 billion. This estimate is based on quantification of crops that are available at the global ... -
Disentangling the contributions of dispersal limitation, ecological drift, and ecological filtering to wild bee community assembly
Sydenham, Markus A. K.; Moe, Stein Ragnar; Kuhlmann, Michael; Potts, Simon G.; Roberts, Stuart P.M.; Totland, Ørjan; Eldegard, Katrine (Journal article; Peer reviewed, 2017) -
Diversity of wild bees in semi-natural grasslands in southeast Norway is related to temperature and amount of edge habitat in the surrounding landscape
Rastad, Ida Elise Løvall (Master thesis, 2021)The declines in diversity and abundance of wild bees are mainly attributed to the intensification of agricultural practices and the resulting loss of semi-natural grassland habitats. Furthermore, the effect of climate ... -
Does the solitary bee Andrena lapponica show sex-specific responses to habitat change?
Lund Norbakk, Line (Master thesis, 2017)Aim: Land use alterations are a serious challenge for solitary bees. This is especially so for specialized bees that rely on a single plant species when collecting pollen for their larvae. Moreover, the sex ratio within ... -
Drivers and consequences of partial migration in an alpine bird species
Arnekleiv, Øyvind Lorvik (Master thesis, 2020)1. Partial migration, where parts of a population migrate between winter and summer (breeding) areas and the rest remain year-round resident, is a common phenomenon across several bird species. However, both drivers and ... -
Drivers and consequences of partial migration in an alpine bird species
Arnekleiv, Øyvind Lorvik; Eldegard, Katrine; Moa, Pål Fossland; Eriksen, Lasse Frost; Nilsen, Erlend Birkeland (Journal article; Peer reviewed, 2022)1. Partial migration, where a portion of the population migrates between win-ter and summer (breeding) areas and the rest remain year- round resident, is a common phenomenon across several taxonomic groups. Several hypotheses ... -
Drivers of the diversity and distribution of wild bees in a species poor region
Sydenham, Markus Arne Kjær (PhD Thesis;2016:23, Doctoral thesis, 2020-11-13)Bee diversity is declining globally. On a European scale, roughly 10% of the species are considered threatened, but the number may be even higher. The threatened status of bees depends on both the taxonomic and spatial ... -
An ecological and socio-economical study of a locally endangered tree species, Olea europaea subsp. cuspidata, in a dry Afromontane forest
Wegasie, Mekdes Ourge (PhD Thesis;2018:94, Doctoral thesis, 2018)Afromontane forests are found in the tropics and are often threatened because of land use changes. These forests have various types of multipurpose tree species that provide different services to the local communities. ... -
Enhancing pollination is more effective than increased conventional agriculture inputs for improving watermelon yields
Sawe, Thomas; Eldegard, Katrine; Totland, Ørjan; Macrice, Samora; Nielsen, Anders (Peer reviewed; Journal article, 2020)Agricultural practices to improve yields in small‐scale farms in Africa usually focus on improving growing conditions for the crops by applying fertilizers, irrigation, and/or pesticides. This may, however, have limited ... -
Enhancing pollination is more effective than increased conventional agriculture inputs for improving watermelon yields
Sawe, Thomas; Eldegard, Katrine; Totland, Ørjan; Macrice, Samora; Nielsen, Anders (Peer reviewed; Journal article, 2020)Agricultural practices to improve yields in small‐scale farms in Africa usually focus on improving growing conditions for the crops by applying fertilizers, irrigation, and/or pesticides. This may, however, have limited ... -
Estimating and analysing the occupancy of the introduced shrew Crocidura russula in Norway
Talleraas, Simen Moflag (Master thesis, 2021)The Greater white-toothed shrew (Crocidura russula) is a shrew that was discovered in Norway in 2017. The species is of concern because it is invasive and has a history of environmental impact. It is native around the ... -
Fire dynamics in savanna woodlands of Tanzania : spatial and temporal patterns and relationships with woody species
Tarimo, Beatrice Christopher (PhD Thesis;2016:26, Doctoral thesis, 2020-11-13)Fire is an important ecological factor that influence the composition, structure and distribution of tropical savannas. Fire has been part of tropical savannas throughout recorded history. These savannas experience more ... -
Habitat and foraging ecology of two cryptic bat species 59° North : Myotis mystacinus and M. brandtii
McKay, April Irene Riderbo (Master thesis, 2020)The Brandts’ bat (Myotis brandtii) and the whiskered bat (Myotis mystacinus) are cryptic species from distinct taxonomic clades whose ranges frequently overlap. What, if any, resource partitioning that exists between them ... -
Hide and seek : a pilot study on day roosts in autumn and hibernacula for Vesper bats in southeast Norway
Kristiansen, Kristian Flagstad (Master thesis, 2018)1. Bats constitute >20% of all terrestrial mammal species in Norway (12 resident species, 7 on the national Red list). Yet, the knowledge of their distribution, population trends and potential threats in Norway is very ... -
High resolution prediction maps of solitary bee diversity can guide conservation measures
Sydenham, Markus A. K.; Venter, Zander; Eldegard, Katrine; Moe, Stein Ragnar; Steinert, Mari; Staverløkk, Arnstein; Dahle, Sondre; Skoog, Daniel Ingvar Jeuderan; Hanevik, Kaj-Andreas; Skrindo, Astrid Brekke; Rusch, Graciela (Peer reviewed; Journal article, 2021)Wild bees are key ecosystem components making their decline a cause for concern. An effective measure to increase wild bee diversity is to enhance plant diversity. However, the effect on bee diversity of augmenting plant ... -
How to efficiently survey floral resource availability and diversity for pollinating insects in semi-natural grasslands
Helle, Anders Gunnar (Master thesis, 2021)Floral resources are the foundation for insect pollinators, on which we in turn rely on for food and ecosystem functioning. Global and regional trends show that insect pollinators become increasingly endangered with ... -
Hvordan ivaretas hensynet til naturmangfold i bit-for-bit nedbyggingen av strandsonen : et casestudie av hvordan miljøprinsippene i naturmangfoldloven (§§ 8–10), begrunnes i dispensasjonsvedtak i strandsonen i Mandal kommune
Madsen, Rebecca Forbergskog (Master thesis, 2021)Arealendring er den viktigste årsaken til at arter er på rødlisten. I dag er ni av ti arter truet på grunn av arealendringer. Sjøfugl har størst nedgang blant arter i marine økosystemer. Det har siden 1965 vært byggeforbud ... -
Impacts of climate change on the boreal forest ecosystem. Scientific Opinion of the Panel on Alien Organisms and Trade in Endangered species (CITES) of the Norwegian Scientific Committee for Food and Environment
Kausrud, Kyrre Linné; Vandvik, Vigdis; Flø, Daniel; Geange, Sonya Rita; Hegland, Stein Joar; Hermansen, Jo Skeie; Hole, Lars Robert; Ims, Rolf Anker; Kauserud, Håvard; Kirkendall, Lawrence Richard; Nordén, Jenni; Nybakken, Line; Ohlson, Mikael; Skarpaas, Olav; Wendell, Micael; de Boer, Hugo; Eldegard, Katrine; Hindar, Kjetil; Järnegren, Johanna; Måren, Inger Elisabeth; Nielsen, Anders; Nilsen, Erlend Birkeland; Rueness, Eli Knispel; Thorstad, Eva Bonsak; Velle, Gaute (Peer reviewed; Journal article, 2022)