Blar i NTNU Open på forfatter "Røskaft, Eivin"
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Breeding success of the Gyrfalcon (Falco rusticolus) in northern Norway in relation to food supply and weather
Jamrozik, Kamila (Master thesis, 2012)Food supply and weather are among the main factors limiting bird numbers. In raptors prey availability may be closely linked to the reproduction output while weather conditions most often act indirectly by modifying food ... -
A case study on conflict intensity between humans and elephants at Teknaf Wildlife Sanctuary, Cox’s Bazar, Bangladesh
Hossen, Amir; Røskaft, Eivin (Peer reviewed; Journal article, 2023)Humans’ and elephants’ conflict is considered a common phenomenon in Bangladesh due to extreme anthropogenic interferences on elephant habitats. Concurrently, the landless people were encouraged to encroach on forest land ... -
Characteristics determining host suitability for a generalist parasite
Stokke, Bård Gunnar; Ratikainen, Irja Ida; Moksnes, Arne; Røskaft, Eivin; Schulze-Hagen, Karl; Leech, David I.; Møller, Anders pape; Fossøy, Frode (Journal article; Peer reviewed, 2018)Host quality is critical for parasites. The common cuckoo Cuculus canorus is a generalist avian brood parasite, but individual females show strong preference for a specific host species. Here, we use three extensive datasets ... -
Climate Change and Human Population Increase Impacts on Swayne's Hartebeest (Alcelaphus buselaphus swaynei) Conservation in Senkele Swayne's Hartebeest Sanctuary, Ethiopia
Lemessa, Aman Desta (Master thesis, 2015)Swayne s hartebeest (Alcelaphus buselaphus swaynei) is an endangered endemic antelope found in Ethiopia. The only viable population found in Senkele has been threatened by anthropogenic activities. Contemporary climate ... -
Coevolution in Action: Disruptive Selection on Egg Colour in an Avian Brood Parasite and its Host
Yang, Chanchao; Liang, Wei; Cai, Yan; Shi, Suhua; Takasu, Fugo; Møller, Anders pape; Antonov, Anton Tinchov; Fossøy, Frode; Moksnes, Arne; Røskaft, Eivin; Stokke, Bård Gunnar (Journal article; Peer reviewed, 2010)Background: Trait polymorphism can evolve as a consequence of frequency-dependent selection. Coevolutionary interactions between hosts and parasites may lead to selection on both to evolve extreme phenotypes deviating ... -
Collision risk in white-tailed eagles. Modelling collision risk using vantage point observations in Smøla wind-power plant
May, Roelof Frans; Lund, Pernille Andersen; Langston, Rowena; Dahl, Espen Lie; Bevanger, Kjetil Modolv; Reitan, Ole; Nygård, Torgeir; Pedersen, Hans-Christian; Stokke, Bård Gunnar; Røskaft, Eivin (NINA rapport, Research report, 2010)Large soaring birds of prey, such as the white-tailed eagle, are recognized to be perhaps the most vulnerable bird group regarding risk of collisions with turbines in wind-power plants. Their mortalities have called for ... -
Community Outreach Programmes and the Conservation of Protected Areas - A Case study of villages near Tarangire National Park, Tanzania
Sosiya, Timotheo (Master thesis, 2016)Linking conservation of wildlife in and around protected areas (PAs) to community livelihoods surrounding those areas is inevitable for sustainable co-existence between PAs and people. Community Outreach Programs (OP) are ... -
Community spatial distance and educational determinants of how local people appreciate conservation benefits around Tarangire and Saadani National Parks, Tanzania
Mbise, Franco P.; Ranke, Peter Sjolte; Røskaft, Eivin (Peer reviewed; Journal article, 2021)The understanding of how educational and spatial factors influence appreciation of conservation benefits to locals living adjacent to protected areas is a very important aspect in conservation initiatives. In this study ... -
Confirmation of House Crows Corvus splendens laying immaculate blue eggs
Nahid, Mominul Islam; Fossøy, Frode; Stokke, Bård Gunnar; Begum, Sajeda; Røskaft, Eivin (Peer reviewed; Journal article, 2019)House Crows Corvus splendens lay eggs with bluish-green ground colour and black or brown blotches and only one egg morph was believed to exist. Here, we confirm the existence of an immaculate, spotless blue egg morph that ... -
Consequences of climate-induced vegetation changes exceed those of human disturbance for wild impala in the Serengeti ecosystem
Hunninck, Louis; May, Roelof Frans; Jackson, Craig Ryan; Palme, Rupert; Røskaft, Eivin; Sheriff, Michael (Journal article; Peer reviewed, 2020)In East Africa, climate change is predicted to reduce vegetation quality, and pervasive human disturbance has already resulted in significant declines in biodiversity. We studied the combined effects of reduced forage ... -
Conservation Issues and Utilization of Wetlands in Nepal: A case study from Koshi Tappu Wildlife Reserve
Bhattarai, Mahendra (Master thesis, 2015)Wetlands, once considered as the wasteland, are one of the most productive ecosystems with high level of biodiversity on earth. Nepal has a number of wetlands, which are an integral part of local ecosystems, cultures and ... -
Conservation Outside Protected Areas:: The Perspectives of Local Community Leaders in Southern Ngorongoro Conservation Area, Karatu District Tanzania
Gambay, Joseph Gwandu (Master thesis, 2014)20 villages were the case study areas in Karatu district located between two protected areas of Ngorongoro Conservation Area (NCA) and Lake Manyara National Park (LMNP). The district has potential areas that could be used ... -
Costs and benefits associated with natural resource exploitation in Chatthin Wildlife Sanctuary in Myanmar, and its impact on thamin (Rucervus eldii thamin) conservation
Thant, Zaw Min (Master thesis, 2017)The conservation of wildlife in the Anthropocene inevitably depends on an understanding of how human populations interact with wildlife and its habitat. This involves understanding (1) how they exploit the natural resources ... -
Crop raiding and conflict: Study of Rhesus macaque-human conflict in Shivapuri-Nagarjun National Park, Kathmandu Nepal
Air, Anju (Master thesis, 2015)Crop raiding is one of the causes of conflict with Rhesus macaque (Macaca mulatta) mainly associated with farmers. Crop raiding depends on many factors such as season, spatial and temporal distribution of wild food resources, ... -
A dead giveaway: Foraging vultures and other avian scavengers respond to auditory cues
Jackson, Craig Ryan; Maddox, Thomas M; Mbise, Franco Peniel; Stokke, Bård Gunnar; belant, Jerrold L.; Bevanger, Kjetil Modolv; Durant, Sarah M.; Fyumagwa, R.D.; Ranke, Peter Sjolte; Røskaft, Eivin; May, Roelof Frans; Fossøy, Frode (Peer reviewed; Journal article, 2020)Carrion represents an unpredictable and widely distributed primary food source for vultures and other avian scavengers. Avian scavengers in African savanna ecosystems are reported to rely exclusively on visual stimuli to ... -
Deficiency in egg rejection in a host species as a response to the absence of brood parasitism
Yang, Canchao; Wang, Longwu; Cheng, Shun-Jen; Hsu, Yu-Cheng; Stokke, Bård Gunnar; Røskaft, Eivin; Moksnes, Arne; Liang, Wei; Møller, Anders Pape (Journal article, 2015)Different populations of a host species subject to variable patterns of selection due to cuckoo parasitism provide an optimal situation for studying natural selection and coevolution in action. We compared egg appearance ... -
Depredation of Livestock by Wild Carnivores in the Eastern Serengeti Ecosystem, Tanzania
Lyamuya, Richard Daniel (Doctoral theses at NTNU;2017:243, Doctoral thesis, 2017)Globally, wild carnivore populations outside protected areas are at threat from retaliatory killings triggered by livestock depredation. Monitoring of livestock depredation in specific areas is essential to formulate ... -
Determinants of Conservation Support in Local Communities: A Case Study of Indawgyi Wildlife Sanctuary, Myanmar
Htay, Thazin (Master thesis, 2020)Local communities living adjacent to Protected Areas (PA) play a vital role in biodiversity conservation. Depending on their positive and negative associations with the PA, they can either be conservation allies or ... -
Development and behavior of Plaintive Cuckoo (Cacomantis merulinus) nestlings and their Common Tailorbird (Orthotomus sutorius) hosts
Tunheim, Odd Helge; Stokke, Bård Gunnar; Wang, Longwu; Yang, Canchao; Jiang, Aiwu; Liang, Wei; Røskaft, Eivin; Fossøy, Frode (Journal article; Peer reviewed, 2019)Background Our knowledge of avian brood parasitism is primarily based on studies of a few selected species. Recently, researchers have targeted a wider range of host–parasite systems, which has allowed further evaluation ... -
Dietary composition, overlap and competition between impala and domestic goat as revealed by DNA metabarcoding
Fossum, Ingrid Aase Lingaas (Master thesis, 2017)In a world with a rapidly growing human population and limited resources, it is important to understand how we interact with wildlife to ensure their conservation. In Tanzania, the human population has more than tripled ...