English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Acoustic scattering layers of A4eganyctiphanes norvegica in the Oslofjord, Norway, typically stayed below -70 m during the day They remained below prevailing fish schools, though varying numbers of deep-living fish occurred among the krill. The estimated light intensity at the top of the krdl layer varied between 4.6 x 10-"nd 2.3 x 10-4 pm01 m-' S-' M. norvegjca followed isolumes during ascent a t dusk, but upward migration was mainly arrested at -10-30 m and the krill were scattered throughout the water column at night. The minimum depth was not related to seasonal light levels, chlorophyll concentration or the pycnocline. Fish schools dispersed at sunset, and fish invaded the krill layer at night. Nocturnal avoidance of the surface water may thus have been an antipredator response Herbivorous feeding was strongly related to abundance of algae (chl a levels). Feeding on phytoplankton increased at night, but daytime stomach pigment content was high during spring, when sediment~ng phytoplankton appeared to represent a deep food source. Feeding on copepods was evident both day and night, with no cons~stent relatlon between copepod remains in the stomachs and integrated abundance of copepods in the water column. M norvegica carried out diel vertical migrations irrespective of fluctuations in distribution and abundance of food resources.

Diel vertical migration of the krill Meganyctiphanes norvegica in relation to physical environment, food and predators