Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.

Little auks under the midnight sun: diel activity rhythm of a small diving seabird during the Arctic summer

Autor: Katarzyna Wojczulanis-Jakubas, Piotr Wąż, Dariusz Jakubas

Publikováno v: Polar Research, Vol 39, Iss 0, Pp 1-9 (2020)

Many animal species exhibit a diel, 24-hr pattern of activity, which is steered by timing cues, with the daily light–dark cycle considered the most powerful. This cue, however, is reduced in polar zones under continuous daylight conditions associat

Externí odkaz: https://doaj.org/article/ca68f68c0a45476f8becc66a3d8deda9

The Effect of a Common Daily Schedule on Human Circadian Rhythms During the Polar Day in Svalbard: A Field Study

Autor: Kamila Weissová, Jitka Škrabalová, Kateřina Skálová, Zdeňka Bendová, Jana Kopřivová

Publikováno v: Journal of Circadian Rhythms, Vol 17, Iss 1 (2019)

All Arctic visitors have to deal with extreme conditions, including a constant high light intensity during the summer season or constant darkness during winter. The light/dark cycle serves as the most potent synchronizing signal for the biological cl

Externí odkaz: https://doaj.org/article/f1addcde6f1947ee93ac468d0785a185

Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.

Melatonin and corticosterone profiles under polar day in a seabird with sexually-opposite activity-rhythms

Autor: Susanne Jenni-Eiermann, Wolfgang Goymann, Barbara Helm, Nicholas Per Huffeldt, Flemming Merkel

Publikováno v: Per Huffeldt, N, Merkel, F R, Jenni-Eiermann, S, Goymann, W & Helm, B 2020, ' Melatonin and corticosterone profiles under polar day in a seabird with sexually-opposite activity-rhythms ', General and Comparative Endocrinology, vol. 285, 113296 . https://doi.org/10.1016/j.ygcen.2019.113296
General and Comparative Endocrinology, 285:113296. ACADEMIC PRESS INC ELSEVIER SCIENCE

The 24 h geophysical light-dark cycle is the main organizer of daily rhythms, scheduling physiology and behavior. This cycle attenuates greatly during the continuous light of summer at polar latitudes, resulting in species-specific and even individua

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::afeaea41ec2dbfef208fb5406f2280a9
https://pure.au.dk/ws/files/230646318/manuscript_file_tobh_au_do800bx5h80exk7v3dybhyhwfx6j7bx0.pdf