Blar i NTNU Open på forfatter "Jackson, Craig Ryan"
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Anthropogenic Impacts on the Social Structure and Behaviour of Impala (Aepyceros melampus) Populations in Areas of Different Land Use - A case study from the Serengeti Ecosystem, Tanzania
Setsaas, Tuva (Master thesis, 2017)The impact of anthropogenic disturbance on wildlife populations in protected areas as vital for management regulations and conservation efforts. Knowledge of how different human activities might impact social structure and ... -
Behavioural and demographic changes in impala populations after 15 years of improved conservation management
Flølo, Linn Marie; Hunninck, Louis Marcel; May, Roelof Frans; Jackson, Craig Ryan; Setsaas, Trine Hay; Holmern, Tomas; Røskaft, Eivin (Peer reviewed; Journal article, 2021)Many protected areas (PAs) have been created globally in response to the dramatic human- induced decline in biodiversity. However, not all PAs successfully preserve their biodiversity and continued monitoring is vital to ... -
Being stressed outside the park — conservation of African elephants (Loxodonta africana) in Namibia
Hunninck, Louis; Ringstad, Iris; Jackson, Craig Ryan; May, Roelof Frans; Fossøy, Frode; Uiseb, Kenneth; Killian, Werner; Røskaft, Eivin (Journal article; Peer reviewed, 2017)The conservation of the African savanna elephant (Loxodonta africana) is of prime importance for many African countries. Interactions between elephants and humans are known to induce stress and thereby have the potential ... -
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 ... -
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 ... -
Diurnal and nocturnal movements of Kori Bustards in the Serengeti ecosystem
Mmassy, Emmanuel Clamsen; Ranke, Peter S.; Lesio, Nicephor; Jackson, Craig Ryan; May, Roelof Frans; Røskaft, Eivin (Peer reviewed; Journal article, 2022)Although Kori Bustards (Ardeotis kori) are reported as diurnal, the species’ activity patterns have not been assessed to date. We report on the movement during different parts of the day of eight GPS-tagged individuals in ... -
Do carnivore surveys match reports of carnivore presence by pastoralists? A case of the eastern Serengeti ecosystem
Mbise, Franco Peniel; Jackson, Craig Ryan; Lyamuya, Richard; Fyumagwa, Robert D.; Ranke, Peter Sjolte; Røskaft, Eivin (Peer reviewed; Journal article, 2020)Human-carnivore encounters are common where humans and wild carnivores share the same landscape. The frequency of such encounters gives insight regarding carnivore density and might correlate with human-carnivore conflict ... -
Evaluating the use of local ecological knowledge (LEK) in determining habitat preference and occurrence of multiple large carnivores
Madsen, Emily K.; Elliot, Nicholas B.; Mjingo, Ernest E.; Masenga, Emmanuel H.; Jackson, Craig Ryan; May, Roelof Frans; Røskaft, Eivin; Broekhuis, Femke (Peer reviewed; Journal article, 2020)Understanding habitat preferences and distribution of threatened species is a cornerstone of conservation, however many of the techniques available can be resource intensive. One cost-effective method is by collecting ... -
Factors Influencing African Wild Dog (Lycaon pictus) Habitat Selection and Ranging Behaviour: Conservation and Management Implications
Jackson, Craig Ryan (Doktoravhandlinger ved NTNU, 1503-8181; 2014:54, Doctoral thesis, 2014)Large carnivores are particularly susceptible to negative anthropogenic effects. As human populations continue to encroach on wildlife habitats, protected areas may become increasingly important for large carnivore ... -
Global life-cycle impacts of onshore wind-power plants on bird richness
May, Roelof Frans; Middel, Heleen; Stokke, Bård Gunnar; Jackson, Craig Ryan; Verones, Francesca (Peer reviewed; Journal article, 2020)Wind energy development continues to expand rapidly to meet international climate targets. However, these developments impact biodiversity and associated sustainability targets negatively. Environmental impact assessments ... -
Heading for the hills: Risk avoidance drives den site selection in African wild dogs
Jackson, Craig Ryan; John Power, R; Groom, Rosemary J; Masenga, Emmanuel Hosiana; Mjingo, E E; Fyumagwa, R.D.; Røskaft, Eivin; Davies-Mostert, Harriet T (Journal article; Peer reviewed, 2014)Compared to their main competitors, African wild dogs (Lycaon pictus) have inferior competitive abilities and interspecific competition is a serious fitness-limiting factor. Lions (Panthera leo) are the dominant large ... -
Human habituation reduces hyrax flight initiation distance in Serengeti
Mbise, Franco Peniel; Fredriksen, Kari-Elise; Ranke, Peter Sjolte; Jackson, Craig Ryan; Fyumagwa, Robert D.; Holmern, Tomas; Fossøy, Frode; Røskaft, Eivin (Journal article; Peer reviewed, 2019)Many animal populations are exposed to disturbance originating from human activities. In response to human disturbance, certain animals display a variety of potentially costly behavioural responses, such as increased ... -
Impala (Aepyceros melampus) responses to anthropogenic activities - An accelerometry approach in the Serengeti ecosystem
Carrillo de Albornoz Bellsolá, Juan (Master thesis, 2019)Menneskelig påvirkning av verneområder og nærliggende områder øker trykket på økosystemtjenestene som dyrelivet er avhengig av. I Serengeti er impala under konstant press fra mennesker på forskjellige måter avhengig av ... -
Life-cycle impacts of wind energy development on bird diversity in Norway
May, Roelof Frans; Jackson, Craig Ryan; Middel, Heleen; Stokke, Bård Gunnar; Verones, Francesca (Peer reviewed; Journal article, 2021)While wind energy remains a preferred source of renewable energy, understanding the full spectrum of impacts are vital to balance climate-related benefits against their costs to biodiversity. Environmental impact assessments ... -
No evidence of handling‐induced mortality in Serengeti's African wild dog population
Jackson, Craig Ryan; Masenga, Emmanuel Hosiana; Mjingo, Ernest E.; Davies, Andrew B.; Fossøy, Frode; Fyumagwa, Robert D.; Røskaft, Eivin; May, Roelof Frans (Journal article; Peer reviewed, 2018)The disappearance of an endangered African wild dog population from Serengeti National Park (SNP) led to international debate centered around one question: were researchers to blame? The “Burrows' hypothesis” postulated ... -
Resource utilization by the Kori bustard in the Serengeti ecosystem
Mmassy, Emmanuel Clamsen; May, Roelof Frans; Jackson, Craig Ryan; Kleven, Oddmund; Nygård, Torgeir; Bevanger, Kjetil Modolv; Røskaft, Eivin (Journal article; Peer reviewed, 2019)This study aimed to understand the movement behaviour and utilization distributions of Kori bustards in space and time in the Serengeti ecosystem. A total of 14 individuals were tracked with the aid of GPS (Geographical ... -
Servicescape of the Greater Serengeti-Mara Ecosystem: Visualizing the linkages between land use, biodiversity and the delivery of wildlife-related ecosystem services
May, Roelof Frans; Jackson, Craig Ryan; Bevanger, Kjetil Modolv; Røskaft, Eivin (Journal article; Peer reviewed, 2019)Understanding how anthropogenic activities and management actions influence the delivery of ecosystem services is complicated by the interrelated nature of diverse factors. We present a Bayesian Belief Network to highlight ... -
Subclinical thiamine deficiency results in failed reproduction in Arctic foxes
Jackson, Craig Ryan; Furnes, Marianne Waldum; Rød-Eriksen, Lars; Yap, Kang Nian; Davey, Marie Louise; Fossøy, Frode; Flagstad, Øystein; Eide, Nina Elisabeth; Ulvund, Kristine R. (Peer reviewed; Journal article, 2024)Thiamine deficiency can result in life-threatening physiological and neurological complications. While a thiamine-deficient diet may result in the onset of such symptoms, the presence of thiaminase – an enzyme that breaks ... -
The effect of relatedness and pack size on territory overlap in African wild dogs
Jackson, Craig Ryan; Groom, Rosemary J; Jordan, Neil; McNutt, J. Weldon (Journal article; Peer reviewed, 2017)Background Spacing patterns mediate competitive interactions between conspecifics, ultimately increasing fitness. The degree of territorial overlap between neighbouring African wild dog (Lycaon pictus) packs varies greatly, ... -
The impacts of human disturbances on the behaviour and population structure of impala (Aepyceros melampus) in the Serengeti ecosystem, Tanzania
Setsaas, Trine Hay; Hunninck, Louis; Jackson, Craig Ryan; May, Roelof Frans; Røskaft, Eivin (Journal article; Peer reviewed, 2018)Human activities can lead to various changes in wildlife populations’ behaviour and dynamics. Understanding specific responses to disturbances can help conservation management better protect wildlife populations to coexist ...