Results 21 to 30 of about 16,008 (241)

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

Vertical distribution of Baltic sprat larvae: changes in patterns of diel migration? [PDF]

, 2007
Ontogenetic and diurnal vertical migration patterns of Baltic sprat larvae were investigated for the periods 1989–1990 and 1998–2002. Comparison of the results led to the hypothesis that the diel vertical migration behaviour of sprat larvae >10 mm has ...
Schmidt, Jörn, Schnack, Dietrich, Voss, Rüdiger   +2 more
core   +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

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

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

Seasonal depth and temperature use, and diel movements of lake trout (Salvelinus namaycush) in a subarctic lake

Arctic Science, 2019
We conducted a multi-year acoustic telemetry study of lake trout (Salvelinus namaycush (Walbaum, 1792)) in a small subarctic lake to investigate depth and temperature occupancy, and vertical activity across seasons (summer, fall, and winter), diel ...
Colin P. Gallagher, Matthew M. Guzzo, Terry A. Dick   +2 more
doaj   +1 more source

Interpreting vertical movement behavior with holistic examination of depth distribution: a novel method reveals cryptic diel activity patterns of Chinook salmon in the Salish Sea

Animal Biotelemetry, 2017
Aquatic organisms exhibit a variety of diel changes in vertical movement that are investigable through the use of biotelemetry. While certain species do not change their movements between day and night, others exhibit diel vertical migration (DVM) or a ...
M. C. Arostegui, T. E. Essington, T. P. Quinn   +2 more
doaj   +1 more source

Temporal patterns in acoustic presence and foraging activity of oceanic dolphins at seamounts in the Azores [PDF]

, 2020
© The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Cascao, I., Lammers, M. O., Prieto, R., Santos, R. S., & Silva, M. A.
Cascão, Irma, Lammers, Marc O., Prieto, Rui, Santos, Ricardo S., Silva, Monica A.   +4 more
core   +1 more source

The Demographic Benefits of Diel Vertical Migration by Zooplankton [PDF]

Ecological Monographs, 1990
Three types of diel vertical migration behavior were expressed within a fjord population of the calanoid copepod Pseudocalanus newmani: (1) reverse migration (nocturnal descent), (2) normal migration (nocturnal ascent), and (3) no detectable migration. Reverse migration by P. newmani occurred in all three study years, but only at a deep (185 m) station
openaire   +3 more sources