Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Karl Frafjord"'
Autor:
Karl Frafjord
Publikováno v:
BMC Zoology, Vol 9, Iss 1, Pp 1-9 (2024)
Abstract Background Knowledge about home range size is vital to understand social systems and population dynamics of small mammals, as well as dispersal and a species’ landscape use. Home ranges have been mapped for some species of voles (subfamily
Externí odkaz:
https://doaj.org/article/49b6112a50d34c42812475dfd1a52cea
Autor:
Karl Frafjord
Publikováno v:
Fauna Norvegica, Vol 23 (2024)
Optimal foraging theory predicts that a hunter should hunt the energetically most profitable prey, often the larger size classes. The eagle owl is a formidable hunter of water voles. Measurements of mandibles of voles eaten by eagle owls indicated a
Externí odkaz:
https://doaj.org/article/b3b467e842b144c296ec5882071a970d
Autor:
Karl Frafjord
Publikováno v:
BMC Zoology, Vol 6, Iss 1, Pp 1-11 (2021)
Abstract Background Nearly all insectivorous bats (Chiroptera) are strictly nocturnal, flying and feeding only between sunset and sunrise despite lower insect availability than by day, most likely to avoid predation by diurnal birds. This may represe
Externí odkaz:
https://doaj.org/article/46b67aedf3484cfea4230f6acee76e47
Autor:
Karl Frafjord
Publikováno v:
BMC Zoology, Vol 6, Iss 1, Pp 1-8 (2021)
Abstract Background Most temperate bats are regular hibernators in the winter. Knowledge about the length of their active season and how they adjust their nightly activity throughout the season, is critical to conservation. The characteristics of the
Externí odkaz:
https://doaj.org/article/940c5858a8ba478a8289cdd49fd2d1af
Autor:
Karl Frafjord
Publikováno v:
PLoS ONE, Vol 11, Iss 4, p e0154338 (2016)
The relationship between home range and reproductive status of water voles (Arvicola amphibius) was studied by radio-tracking on an island off the coast of northern Norway in 2006-2009. The aim was to test assumptions about the species' social struct
Externí odkaz:
https://doaj.org/article/8b2d0887d2af477bb3b1af7e895b5cb2
Autor:
Karl Frafjord
Predator–prey relationships are of great significance to ecosystems, and their effects on the population dynamics of voles and lemmings (Microtinae) in Boreal and Arctic environments have long been of particular interest. A simple ecosystem with on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2bfad42b811e649a03a0dded8376f855
https://hdl.handle.net/10037/23132
https://hdl.handle.net/10037/23132
Autor:
Karl Frafjord
Publikováno v:
Fauna Norvegica, Vol 34 (2014)
The population of water voles Arvicola amphibius was surveyed on 21 islands in the Solvær archipelago, northern Norway, in August 2012; 11 islands with semi-wild domestic sheep Ovis aries and 10 islands without sheep. Signs from water voles are very
Externí odkaz:
https://doaj.org/article/2aeb62eeff3b46c392b7a59a7eb13e8e
Autor:
Sjøgren, Per Johan E, Andreas, Kirchhefer, Storm, Dikka, Ingrid, Sommerseth, Karl, Frafjord, Arve, Elvebakk
Publikováno v:
Rapport från DYLAN WP 1 Tromsø 2012
Externí odkaz:
https://hdl.handle.net/10037/4833
Publikováno v:
Journal of Fish Biology. 91:1365-1377
Records of the ocean sunfish Mola mola along the Norwegian coast were compiled from all possible sources: literature, media, databases and museums. A total of 216 records were found between 1801 and 2015. They were distributed along the whole coast,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb6873c1e26467fc86a7865e246453f3
https://doi.org/10.1111/jfb.13456
https://doi.org/10.1111/jfb.13456
Autor:
Karl Frafjord, Snorre Stuen, Frode Stordal, Dag Hvidsten, Anna Jonsson Henningsson, Arne Martin Slåtsve, Malin Lager, Jeremy S. Gray, Peter Wilhelmsson, B. Rognerud, Andrew Jenkins, Bjørn Erik Kristiansen
Publikováno v:
Ticks and Tick-borne Diseases
In north-western Europe, the common tick, Ixodes ricinus, is widely established, its distribution appears to be increasing and the spread of tick-borne diseases is of increasing concern. The project Flatt i Nord (Ticks in northern Norway) commenced i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1cb11036ca9d8b976429b03511f8c1d3
https://doi.org/10.1016/j.ttbdis.2020.101388
https://doi.org/10.1016/j.ttbdis.2020.101388