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Lasse Fast Jensen
Aalborg University
EcologyPopulationCoregonus oxyrinchusFisheryBiology
62Publications
13H-index
663Citations
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Publications 61
Newest
#1Morten Hertz (AAU: Aalborg University)H-Index: 2
#2Lasse Fast Jensen (AAU: Aalborg University)H-Index: 13
Last. Jon Christian Svendsen (DTU: Technical University of Denmark)H-Index: 19
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Understanding migratory behavior, mortality, and physiology is essential for conservation of many species, particularly anadromous fish. In this study, freshwater and marine migrations of the endan...
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1 CitationsSource
#1Mads Bech-HansenH-Index: 1
Last. Cino PertoldiH-Index: 29
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Behavioural instability is a newly coined term used for measuring asymmetry of bilateral behavioural traits as indicators of genetic or environmental stress. However, this concept might also be useful for other types of data than bilateral traits. In this study, behavioural instability indices of expected behaviour were evaluated as an indicator for environmental stress through the application of aerial photos of foraging flocks of geese. It was presumed that geese would increase anti-predator b...
1 CitationsSource
#1Lonneke L. IJsseldijk (UU: Utrecht University)H-Index: 6
#2Abbo van NeerH-Index: 3
Last. Ursula SiebertH-Index: 34
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Between the 8th January and the 25th February 2016, the largest sperm whale Physeter macrocephalus mortality event ever recorded in the North Sea occurred with 30 sperm whales stranding in five countries within six weeks. All sperm whales were immature males. Groups were stratified by size, with the smaller animals stranding in the Netherlands, and the largest in England. The majority (n = 27) of the stranded animals were necropsied and/or sampled, allowing for an international and comprehensive...
2 CitationsSource
#1Lasse Fast Jensen (AAU: Aalborg University)H-Index: 13
#2Paul C. B. Rognon (INSA Lyon: Institut national des sciences Appliquées de Lyon)H-Index: 1
Last. Jon Christian Svendsen (DTU: Technical University of Denmark)H-Index: 19
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2 CitationsSource
#2Aage Kristian Olsen Alstrup (AU: Aarhus University)H-Index: 13
Last. Lasse Fast Jensen (AAU: Aalborg University)H-Index: 13
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1 CitationsSource
#1Camille de la VegaH-Index: 4
#2Sabine HornH-Index: 3
Last. Harald AsmusH-Index: 27
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Abstract The Wadden Sea undergoes large seasonal changes in species abundance and biomass comprising its complex food web. This study examined four carbon food web models of the Sylt-Romo Bight, one for each season. Each flow model consisted of 66 compartments depicting the respective biomass and energy budget of each ecosystem component and the flows between them. Ecological network analysis (ENA), a set of algorithms to evaluate the functioning of ecological networks, was used to assess the se...
5 CitationsSource
#1Sophie BrasseurH-Index: 14
Last. Geert AartsH-Index: 17
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Terrestrial and marine wildlife populations have been severely reduced by hunting, fishing and habitat destruction, especially in the last centuries. Although management regulations have led to the recovery of some populations, the underlying processes are not always well understood. This study uses a 40-year time series of counts of harbour seals (Phoca vitulina) in the Wadden Sea to study these processes, and demonstrates the influence of historical regional differences in management regimes o...
5 CitationsSource
#1Cino Pertoldi (AAU: Aalborg University)H-Index: 29
#2Lasse Fast Jensen (AAU: Aalborg University)H-Index: 13
Last. Trine Hammer Jensen (AAU: Aalborg University)H-Index: 16
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Harbor seals (Phoca vitulina) inhabit the seas surrounding Denmark and are an important top predator in the marine food chain. This trophic position exposes them to environmental contaminants with disease epidemics and hunting being additional threats to this population. It is therefore important to study how environmental pollution at the current order of magnitude affects the health of the population. Earlier studies have shown that occurrence of periodontitis could be linked to the amount of ...
2 CitationsSource
#1Aage Kristian Olsen Alstrup (Aarhus University Hospital)H-Index: 13
#2Ole Lajord Munk (Aarhus University Hospital)H-Index: 26
Last. Brian Hansen (Aarhus University Hospital)H-Index: 6
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Background Scanning techniques such as magnetic resonance imaging (MRI) and computed tomography (CT) are useful tools in veterinary and human medicine. Here we demonstrate the usefulness of these techniques in the study of the anatomy of wild marine mammals as part of a necropsy. MRI and CT scans of sperm whale teeth (n = 4) were performed. The methods were compared and further compared to current standard methods for evaluation of tooth layering. For MRI a zero echo time sequence was used, as p...
3 CitationsSource
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