Browsing USN Open Archive by Author "Rosell, Frank"
Now showing items 1-20 of 75
-
A gross assessment of the suitability of selected Scottish riparian habitats for beaver
Parker, Howard; Holthe, Vidar; Rosell, Frank (Journal article; Peer reviewed, 2000)In November 1998 we were shown a selection of riparian habitats in Scotland and asked to assess their suitability for beaver based on our experience in working with beaver elsewhere. Though many examples of good beaver ... -
A spherical-plot solution to linking acceleration metrics with animal performance, state, behaviour and lifestyle
Wilson, Rory Paul; Holton, Mark D.; Walker, James S.; Shepard, Emily L. C.; Scantlebury, Mike; Wilson, Vianney L.; Wilson, Gwendoline I.; Tysse, Brenda; Gravenor, Mike; Ciancio, Javier; McNarry, Melitta A.; Mackintosh, Kelly A.; Qasem, Lama; Rosell, Frank; Graf, Patricia Maria; Quintana, Flavio; Gomez-Laich, Agustina; Sala, Juan-Emilio; Mulvenna, Christina C.; Marks, Nicola J.; Jones, Mark W. (Journal article; Peer reviewed, 2016)Background: We are increasingly using recording devices with multiple sensors operating at high frequencies to produce large volumes of data which are problematic to interpret. A particularly challenging example comes from ... -
A test of the dear enemy phenomenon in the Eurasian beaver
Rosell, Frank; Bjørkøyli, Tore (Journal article; Peer reviewed, 2002)We tested the hypothesis that Eurasian beavers, Castor fiber, display the dear enemy phenomenon; that is, they respond less aggressively to intrusions by their territorial neighbours than intrusions by nonterritorial ... -
Age-related changes in somatic condition and reproduction in the Eurasian beaver: Resource history influences onset of reproductive senescence
Campbell, Ruairidh D.; Rosell, Frank; Newman, Chris; Macdonald, David W. (Journal article; Peer reviewed, 2017)Using 15 years of data from a stable population of wild Eurasian beavers (Castor fiber), we examine how annual and lifetime access to food resources affect individual age-related changes in reproduction and somatic condition. ... -
Aquatic habitat use in a semi-aquatic mammal: the Eurasian beaver
Mortensen, Rasmus Mohr; Reinhardt, Stefanie; Hjønnevåg, Marina Eraker; Wilson, R. P.; Rosell, Frank (Peer reviewed; Journal article, 2021)Background: Semi-aquatic mammals exploit resources both on land and in water and may require both to meet their habitat requirements including food- and building resources, refuges, and for social interactions with ... -
Are trends in Olive Ridley sea turtle (Lepidochelys olivacea) nesting abundance affected by El Niño Southern Oscillation (ENSO) variability? Sixteen years of monitoring on the Pacific coast of northern Central America
Ariano-Sanchez, Daniel; Muccio, Colum; Rosell, Frank; Reinhardt, Stefanie (Peer reviewed; Journal article, 2020)Long-term monitoring is essential for the identification of population trends, and to understand how these trends are affected by climate variability. The El Niño Southern Oscillation (ENSO) is the strongest global interannual ... -
Beaver (Castor fiber) activity and spatial movement in response to light and weather conditions
Cabre, L. B.; Mayer, M.; Steyaert, Sam; Rosell, Frank (Peer reviewed; Journal article, 2020)Animal behaviour can affect individual fitness and is influenced by exogenous and endogenous factors. Here, we investigated how light (daylight length and moonlight), weather (precipitation and temperature), age, sex and ... -
Beaver genetic surveillance in Britain
Campbell-Palmer, Róisín; Senn, Helen V.; Girling, Simon Justin; Pizzi, Romain; Elliott, Mark; Gaywood, Martin J.; Rosell, Frank (Peer reviewed; Journal article, 2020)Founder genetic composition can affect reintroduction success, especially as the number of animals released tends to be small and therefore less genetically diverse than their source populations. Numerous translocations ... -
Beaver kits go with the flow, but are safe in the lodge
Fountain, Marte Stensby (Master thesis, 2022)Although natural flooding is an important part of the riparian ecology, climate change is expected to affect the hydrological cycle and alter flow patterns including the timing and frequency of flood. Similar changes can ... -
Beaver management in Norway : a model for continental Europe?
Parker, Howard; Rosell, Frank (Journal article; Peer reviewed, 2003)While Norway has been managing beaver (Castor fiber) for more than 150 years, most central European countries have little experience and none are presently harvesting beaver, despite rapidly growing populations and conflicts. ... -
Blast from the past: wolf (Canis lupus) scent elicits little changes in habitat selection in a naïve beaver (Castor fiber) population
Garvik, Elise Solheim (Master thesis, 2022)Predators control prey population, density, and fitness through mortality, thus prey species should adapt defence mechanisms to reduce the risk of predation. Such as, changes in habitat selection or increased vigilance. ... -
Brown bears possess anal sacs and secretions may code for sex
Rosell, Frank; Jojola, Susan M.; Ingdal, Kristian; Lassen, Bård Andreas; Swenson, Jon; Arnemo, Jon Martin; Zedrosser, Andreas (Journal article; Peer reviewed, 2010-09-14)Olfactory communication occurs in carnivores and many scent-mark with anal gland secretions (AGS), which contain a variety of information including sex-related cues. Currently, there is disagreement about whether bear ... -
Cadmium, copper, and zinc in Eurasian beaver (Castor fiber) from Bø, Telemark, Norway
Fimreite, Norvald; Parker, Howard; Rosell, Frank; Hosen, David Andre; Hovden, Aina; Solheim, Annette (Journal article; Peer reviewed, 2001)Heavy metals are elements present in all forms of life. Of those analysed for in the present study, cadmium (Cd) is toxic and non-essential while copper (Cu) and zinc (Zn) are essential elements, but toxic when certain ... -
Can beaver Castor fiber be selectively harvested by sex and age during spring hunting?
Parker, Howard; Rosell, Frank; Hermansen, Tore André; Sørløkk, Gjermund; Stærk, Martin (Conference report, 2000)In Norway, Sweden and Finland hunting Eurasian beaver Castor fiber Linnaeus, 1758 with firearms is presently the main harvest form and most are shot in late April and early May. As beaver cannot be sexed from external ... -
Captive care and welfare considerations for beavers
Campbell-Palmer, Róisín; Rosell, Frank (Journal article; Peer reviewed, 2015-03-01)Beavers (Castor spp.) tend not to be a commonly held species and little published material exists relating to their captive care. We review published material and discuss husbandry issues taking into account the requirements ... -
Collapsing burrow causes death of a Eurasian beaver, Castor fiber
Thomsen, Liat R.; Sharpe, Fiona; Rosell, Frank (Journal article; Peer reviewed, 2004)The death of a Eurasian Beaver Castor fiber caused by a collapsing burrow in southeast Norway is reported. Two days of heavy rainfall had presumably caused the burrow to collapse, suffocating the animal. -
Comeback of the beaver Castor fiber : an overview of old and new conservation problems
Nolet, Bart A.; Rosell, Frank (Journal article; Peer reviewed, 1998)Due to over-hunting c. 1200 Eurasian previous termbeaversnext term Castor fiber survived in eight relict populations in Europe and Asia at the beginning of the 20th century. Following hunting restrictions and translocation ... -
Couch potatoes do better: Delayed dispersal and territory size affect the duration of territory occupancy in a monogamous mammal
Mayer, Martin; Zedrosser, Andreas; Rosell, Frank (Journal article; Peer reviewed, 2017)In territorial, socially monogamous species, the establishment and defense of a terri - tory are an important strategy to maximize individual fitness, but the factors responsi - ble for the duration of territory occupancy ... -
Current distribution, status and patterns of spread of the Eurasian beaver Castor fiber, and the implications for management
Halley, Duncan J.; Rosell, Frank (Conference report, 2000)Reduced to 1200 animals in 8 small refugia by the end of the 19th century, natural spread and reintroductions have led to a powerful recovery in Eurasian beaver (Castor fiber L. 1758) range and populations. The minimum ... -
Diving behavior in a free-living, semi-aquatic herbivore, the Eurasian beaver Castor fiber
Graf, Patricia Maria; Wilson, Rory Paul; Sanchez, Lea Cohen; Hackländer, Klaus; Rosell, Frank (Journal article; Peer reviewed, 2017)Semi-aquatic mammals have secondarily returned to the aquatic environment, although they spend a major part of their life operating in air. Moving both on land, as well as in, and under water is challenging because such ...