scholarly journals Pan-Arctic diel vertical migration during the polar night

2018 ◽  
Vol 605 ◽  
pp. 61-72 ◽  
Author(s):  
L Hobbs ◽  
FR Cottier ◽  
KS Last ◽  
J Berge
Keyword(s):  
Vertical Migration ◽  
Diel Vertical Migration ◽  
Polar Night

scholarly journals Diel vertical migration of Arctic zooplankton during the polar night

2008 ◽  
Vol 5 (1) ◽  
pp. 69-72 ◽  
Author(s):  
Jørgen Berge ◽  
Finlo Cottier ◽  
Kim S Last ◽  
Øystein Varpe ◽  
Eva Leu ◽  
...  
Keyword(s):  
Vertical Migration ◽  
Diel Vertical Migration ◽  
Marine Ecosystem ◽  
Human Perception ◽  
The Arctic ◽  
Biological Processes ◽  
Polar Night ◽  
Acoustic Data ◽  
Biological Variables ◽  
Diel Variations

High-latitude environments show extreme seasonal variation in physical and biological variables. The classic paradigm of Arctic marine ecosystems holds that most biological processes slow down or cease during the polar night. One key process that is generally assumed to cease during winter is diel vertical migration (DVM) of zooplankton. DVM constitutes the largest synchronized movement of biomass on the planet, and is of paramount importance for marine ecosystem function and carbon cycling. Here we present acoustic data that demonstrate a synchronized DVM behaviour of zooplankton that continues throughout the Arctic winter, in both open and ice-covered waters. We argue that even during the polar night, DVM is regulated by diel variations in solar and lunar illumination, which are at intensities far below the threshold of human perception. We also demonstrate that winter DVM is stronger in open waters compared with ice-covered waters. This suggests that the biologically mediated vertical flux of carbon will increase if there is a continued retreat of the Arctic winter sea ice cover.

scholarly journals From polar night to midnight sun: Diel vertical migration, metabolism and biogeochemical role of zooplankton in a high Arctic fjord (Kongsfjorden, Svalbard)

2017 ◽  
Vol 62 (4) ◽  
pp. 1586-1605 ◽  
Author(s):  
G. Darnis ◽  
L. Hobbs ◽  
M. Geoffroy ◽  
J. C. Grenvald ◽  
P. E. Renaud ◽  
...  
Keyword(s):  
Vertical Migration ◽  
Diel Vertical Migration ◽  
High Arctic ◽  
Polar Night ◽  
Arctic Fjord

Diel vertical migration of mesozooplankton in the northern Yellow Sea

2021 ◽  
Author(s):  
Ruping Ge ◽  
Hongju Chen ◽  
Guangxing Liu ◽  
Yanzhong Zhu ◽  
Qiang Jiang
Keyword(s):  
Vertical Migration ◽  
Yellow Sea ◽  
Diel Vertical Migration ◽  
Northern Yellow Sea

scholarly journals DIEL VERTICAL MIGRATION OF Gonyostomum semen (Raphidophyceae) IN KAWAHARA LAKE

2002 ◽  
Vol 46 ◽  
pp. 1061-1066 ◽  
Author(s):  
Youichi TAKEMOTO ◽  
Katsuhiro FURUMOTO ◽  
Akihide TADA
Keyword(s):  
Vertical Migration ◽  
Diel Vertical Migration ◽  
Gonyostomum Semen

Zooplankton diel vertical migration and influence of upwelling on the biomass in the Chukchi Sea during summer

2015 ◽  
Vol 34 (5) ◽  
pp. 68-74 ◽  
Author(s):  
Huiwu Wang ◽  
Hongxia Chen ◽  
Liang Xue ◽  
Na Liu ◽  
Yanliang Liu
Keyword(s):  
Vertical Migration ◽  
Diel Vertical Migration ◽  
Chukchi Sea

Utilization of subsurface food resources for zooplankton reproduction: Implications for diel vertical migration theory

1996 ◽  
Vol 41 (2) ◽  
pp. 224-233 ◽  
Author(s):  
Craig E. Williamson ◽  
Robert W. Sanders ◽  
Robert E. Moeller ◽  
Paul L.> Stutzman
Keyword(s):  
Vertical Migration ◽  
Diel Vertical Migration ◽  
Food Resources ◽  
Migration Theory

Evolution or Extinction: Might Zooplankton Adaptively Respond to the Novel Invasive Predator Bythotrephes longimanus?

2018 ◽  
Author(s):  
Emma Bloomfield
Keyword(s):  
Vertical Migration ◽  
Diel Vertical Migration ◽  
Prey Species ◽  
Rapid Evolution ◽  
Freshwater Ecosystems ◽  
Bythotrephes Longimanus ◽  
Economic Implications ◽  
Invasive Predators ◽  
Invasive Predator ◽  
Introduced Predators

Invasive predators are a large and growing threat to species diversity and human well-being. One of the reasons invasive predators have a negative impact is that native prey species do not possess appropriate anti-predator defenses. However, rapid evolution may allow prey species to respond adaptively to introduced predators. When this occurs the impacts of invasive predators are mitigated. An invasive predator that is of concern in North America is the spiny water flea, Bythotrephes longimanus. It disrupts freshwater ecosystems through voracious consumption of zooplankton. Declines in zooplankton abundance and richness reduce water quality and recreational fishing opportunities. However, a species of zooplankton, Daphnia mendotae has been found to adaptively respond to B. longimanus. This adaptation is diel vertical migration, the behavioral change of occupying a lower position in the water column during the day to reduce predation risk. Despite the ecological and economic implications of this behavior in response to B. longimanus, it has only been studied in a few lakes. This study investigated adaptive diel vertical migration in D. mendotae from multiple lakes. This was done by measuring the vertical position of D. mendotae in artificial water columns. It was hypothesized that D. mendotae from lakes that have been invaded by B. longimanus will exhibit diel vertical migration in the presence of B. longimanus. If this hypothesis is supported, rapid evolution of diel vertical migration can be established as a widespread response. This would strengthen understanding of rapid evolution and allow lakes more vulnerable to B.longimanus to be identified.

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