Ontology highlight
ABSTRACT:
SUBMITTER: Huffeldt NP
PROVIDER: S-EPMC5046920 | biostudies-literature | 2016 Sep
REPOSITORIES: biostudies-literature
Huffeldt Nicholas Per NP Merkel Flemming R FR
Biology letters 20160901 9
In contrast to daily rhythms that are common in the presence of the geophysical light-dark cycle, organisms at polar latitudes exhibit many diel activity patterns during natural periods of continuous solar light or darkness (polar day and night, respectively), from 24 h rhythms to arrhythmicity. In Arctic Greenland (73.7° N, 56.6° W) during polar day, we observed breeding-site attendance rhythms of thick-billed murres (Uria lomvia; n = 21 pairs), a charadriiform seabird, which provide biparental ...[more]