Results 21 to 30 of about 15,856 (229)

Daphnia diel vertical migration: implications beyond zooplankton [PDF]

Journal of Plankton Research, 2009
Diel vertical migration (DVM) is a common behaviour of many pelagic zooplankton species. While the causes (mostly predator avoidance) and ecophysiological consequences of DVM for zooplankton have been well studied, little is known about the consequences of DVM for the pelagic food web.
Haupt, F., Stockenreiter, M., Baumgartner, M., Boersma, Maarten, Stibor, H.   +4 more
openaire   +2 more sources

Krill diel vertical migration in Southern Patagonia

Journal of Plankton Research, 2021
AbstractDiel vertical migration (DVM) of krill was studied throughout 36 h at a fixed station (46.05°S, 66.19°W; 98-m depth) located in the center of the San Jorge Gulf, Southern Patagonia area, during February 2014. Using an echosounder system, combined with an autonomous Video Plankton Recorder (Auto-VPR) and Jacknet samplings, we describe the ...
Nocera, Ariadna Celina, Giménez, Eloísa Mariana, Diez, Mariano Javier, Retana, María Valeria, Winkler, Gesche   +4 more
openaire   +2 more sources

Reverse Diel Vertical Migration: An Escape from Invertebrate Predators [PDF]

Science, 1983
The marine copepod Pseudocalanus sp. exhibits an unusual reverse diel vertical migration in Dabob Bay, Washington, concurrently with a normal vertical migration by nocturnal invertebrate predators. Reduced spatial overlap with predators appears to decrease mortality rate of adult female Pseudocalanus
Ohman, Mark D, Frost, Bruce W, Cohen, Edward B   +2 more
openaire   +5 more sources

Extensive oceanic mesopelagic habitat use of a migratory continental shark species

Scientific Reports, 2022
The identification of movement and behaviour patterns, as well as inter- and intra-population connectivity is crucial in order to implement effective and functional management and conservation measures for threatened migratory species such as tope ...
Matthias Schaber, Sven Gastauer, Boris Cisewski, Nicole Hielscher, Michael Janke, Marian Peña, Serdar Sakinan, James Thorburn   +7 more
doaj   +1 more source

Behavioural tactics across thermal gradients align with partial morphological divergence in brook charr. [PDF]

J Anim Ecol
Our study reveals that brook charr adopt distinct ‘warm’ and ‘cool’ behavioural tactics to balance foraging and thermal stress in stratified lakes. By linking fine‐scale thermal movements to morphology, we show how temperature‐driven habitat use promotes individual specialization and potential ecotypic divergence under climate change.
Stahl A, Pépino M, Bertolo A, Magnan P.
europepmc   +2 more sources

Vertical Distribution Patterns of Cephalopods in the Northern Gulf of Mexico

Frontiers in Marine Science, 2020
Cephalopods are important in midwater ecosystems of the Gulf of Mexico (GOM) as both predator and prey. Vertical distribution and migration patterns (both diel and ontogenic) are not known for the majority of deep-water cephalopods.
Heather Judkins, Michael Vecchione
doaj   +1 more source

Fine-scale vertical structure of sound-scattering layers over an east border upwelling system and its relationship to pelagic habitat characteristics [PDF]

Ocean Science, 2020
Understanding the relationship between sound-scattering layers (SSLs) and pelagic habitat characteristics is a substantial step to apprehend ecosystem dynamics. SSLs are detected on echo sounders representing aggregated marine pelagic organisms.
N. Diogoul, N. Diogoul, N. Diogoul, P. Brehmer, P. Brehmer, P. Brehmer, Y. Perrot, M. Tiedemann, A. Thiam, S. El Ayoubi, A. Mouget, C. Migayrou, O. Sadio, A. Sarré   +13 more
doaj   +1 more source

Clouds, shadows, or twilight? Mayfly nymphs recognise the difference [PDF]

, 2006
1. We examined the relative changes in light intensity that initiate night-time locomotor activity changes in nymphs of the mayfly, Stenonema modestum (Heptageniidae).
Allan J.D., Allan J.D., Bishop J.E., Casey R.J., Chaston I., Chaston I., Ciborowski J.J.H., Corkum L.D., Cowan C.A., Daan N., Devoe R.D., Elliott J.M., Haney J.F., Haney J.F., Heise B., Jarvilehto M., Kohler S.L., Lampert W., Lampert W., Lythgoe J.N., McFarland W.N., Metcalfe N.B., O'Keefe T.C., Ringelberg J., Schloss A.L., Scrimgeour G.J., Van Gool E., Wilzbach M.A., Zar J.H., Zaret T.M.   +29 more
core   +3 more sources

Diel variability in the vertical distribution of coastal barnacle larvae in the Bay of Cartagena, Chile

Revista Chilena de Historia Natural, 2023
Background Vertical distribution of zooplankton is an important biological factor that can modulate zooplankton transport, dispersal, and survival in the ocean.
Jessica Bonicelli, María José Jeneral, Bryan Bularz, Nicolas Weidberg, Katalin A. Plummer, Ricardo Calderón, Ursula Cifuentes, Darly Alarcón, Sergio A. Navarrete   +8 more
doaj   +1 more source

A 21-year record of vertically migrating subepilimnetic populations of Cryptomonas spp. [PDF]

, 2016
The vertical distribution and diel migration of Cryptomonas spp. were monitored continuously for 21 years in mesotrophic Cross Reservoir, northeast Kansas, USA.
Bennett, LeeAnn, Bergin, Sean P., Chapin, Bridgett R. K., deNoyelles Jr., Frank, Dewey, Sharon L., Graham, David W., Kastens, Jude H., Knapp, Charles W., Lomas, John M., Smith, Val H.   +9 more
core   +1 more source