Browsing Institutt for natur, helse og miljø by Title
Now showing items 129-148 of 316
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High-elevational occurrence of two tick species, Ixodes ricinus and I. trianguliceps, at their northern distribution range
(Journal article; Peer reviewed, 2021)Background: During the last decades a northward and upward range shift has been observed among many organisms across different taxa. In the northern hemisphere, ticks have been observed to have increased their latitudinal ... -
Host in reserve: The role of common shrews (Sorex araneus) as a supplementary source of tick hosts in small mammal communities influenced by rodent population cycles
(Peer reviewed; Journal article, 2022)Rodents often act as important hosts for ticks and as pathogen reservoirs. At north -ern latitudes, rodents often undergo multi- annual population cycles, and the peri -odic absence of certain hosts may inhibit the survival ... -
How does spatial heterogeneity affect inter- and intraspecific growth patterns in tundra shrubs?
(Peer reviewed; Journal article, 2021)1. Arctic and alpine ecosystems are strongly affected by rapidly changing environmental conditions, resulting in profound vegetation shifts, which are highly heterogeneous and hard to predict, yet have strong global impacts. ... -
Hunting promotes sexual conflict in brown bears
(Journal article; Peer reviewed, 2017)The removal of individuals through hunting can destabilize social structure, potentially affecting population dynamics. Although previous studies have shown that hunting can indirectly reduce juvenile survival through ... -
Hunting promotes spatial reorganization and sexually selected infanticide
(Journal article; Peer reviewed, 2017)Harvest can affect the ecology and evolution of wild species. The removal of key individuals, such as matriarchs or dominant males, can disrupt social structure and exacerbate the impact of hunting on population growth. ... -
Hunting regulation favors slow life histories in a large carnivore
(Journal article; Peer reviewed, 2018)As an important extrinsic source of mortality, harvest should select for fast reproduction and accelerated life histories. However, if vulnerability to harvest depends upon female reproductive status, patterns of selectivity ... -
Hydropower‐driven thermal changes, biological responses and mitigating measures in northern river systems
(Peer reviewed; Journal article, 2021)Water temperatures control life histories and diversity of aquatic species. Hydropower regulation, particularly in high head systems, alters natural water temperature regimes, which may have profound and long‐term impacts ... -
Identification of salmon population bottlenecks from low flows in a hydro-regulated river
(Journal article; Peer reviewed, 2019)Flow regime alterations from hydropower regulation may impact fish populations. Impacts can be characterized using methods for mapping bottlenecks for different species life stages. Improving the understanding of such ... -
The impact of bio-logging on body weight change of the Eurasian beaver
(Peer reviewed; Journal article, 2021)Bio-logging is a common method to collect ecological data on wild animals, but might also induce stress, reduce body condition, and alter behavior. Eurasian beavers (Castor fiber) are a semi-aquatic and nocturnal species ... -
The impact of hydropeaking on juvenile brown trout (Salmo trutta) in a Norwegian regulated river
(Peer reviewed; Journal article, 2020)The Norwegian electrical energy supply system is based on hydropower. The now deregulated energy market has led to increased use of hydropeaking production, leading to greater fluctuations in discharge and water levels ... -
The impact of volcanism on Scandinavian climate and human societies during the Holocene: Insights into the Fimbulwinter eruptions (536/540 AD)
(Peer reviewed; Journal article, 2024)Recent paleoclimatic research has revealed that volcanic events around 536–540 AD caused severe, short-term global cooling. For this same period, archeological research from various regions evidences significant cultural ... -
Impacts of human disturbance on flight response and habitat use of red deer
(Peer reviewed; Journal article, 2022)Many wild animals perceive humans as predators, and human disturbance, especially in the form of hunting, triggers antipredatory behavior among prey. Yet, knowledge of how game species react to different types of human ... -
The importance of aquatic macrophytes in a eutrophic tropical shallow lake
(Journal article; Peer reviewed, 2021)Inlay Lake is the second largest natural lake in Myanmar. Located in Shan State, in the eastern part of the country, it is a known biodiversity hotspot. The lake is negatively affected by an increasing local human population ... -
Importance of mountain height and latitude for the altitudinal distribution limits of vascular plants in Scandinavia: are the mountains high enough?
(Journal article; Peer reviewed, 2010)The main aim of the present paper was to study regional differences in the altitudinal distribution limits of vascular plants in relation to mountain height and latitudinal position. Altitudinal limits from previously ... -
Improved Environmental Status: 50 Years of Declining Fish Mercury Levels in Boreal and Subarctic Fennoscandia
(Journal article; Peer reviewed, 2019)Temporally (1965–2015) and spatially (55°–70°N) extensive records of total mercury (Hg) in freshwater fish showed consistent declines in boreal and subarctic Fennoscandia. The database contains 54 560 fish entries (n: pike ... -
Improving biome and climate modelling for a set of past climate conditions: evaluating bias correction using the CDF-t approach
(Journal article, 2023)Climate model simulations are inherently biased. It is a notably difficult problem when dealing with climate impact assessments and model-data integration. This is especially true when looking at derived quantities such ... -
Improving Utilization of Maximal Oxygen Uptake and Work Economy in Recreational Cross-Country Skiers With High-Intensity Double-Poling Intervals
(Journal article; Peer reviewed, 2020)Purpose: To investigate the effect of a double-poling (DP) high-intensity aerobic interval-training (HIT) intervention performed without increasing total HIT volume. This means that regular HIT training (eg, running) was ... -
Increased mRNA expression levels of ERCC1, OGG1 and RAI in colorectal adenomas and carcinomas
(Journal article; Peer reviewed, 2006-08-16)BACKGROUND: The majority of colorectal cancer (CRC) cases develop through the adenoma-carcinoma pathway. If an increase in DNA repair expression is detected in both early adenomas and carcinomas it may indicate that low ... -
Individual recognition of Eurasian beavers (Castor fiber) by their tail patterns using a computer-assisted pattern-identification algorithm
(Peer reviewed; Journal article, 2024)Individual recognition of animals is an important aspect of ecological sciences. Photograph-based individual recognition options are of particular importance since these represent a non-invasive method to distinguish and ... -
Infanticide as a male reproductive strategy has a nutritive risk effect in brown bears
(Journal article; Peer reviewed, 2013-10-02)Behavioural strategies to reduce predation risk can incur costs, which are often referred to as risk effects. A common strategy to avoid predation is spatio-temporal avoidance of predators, in which prey typically trade ...