Results 11 to 20 of about 3,728 (226)

Diel vertical migration: modelling light-mediated mechanisms [PDF]

Journal of Plankton Research, 1996
Light is generally regarded as the most likely cue used by zooplankton to regulate their vertical movements through the water column. However, the way in which light is used by zooplankton as a cue is not well understood. In this paper we present a mathematical model of diel vertical migration which produces vertical distributions of zooplankton that ...
Richards, SA, Possingham, HP, Noye, J
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Models on diel vertical migration [PDF]

, 1993
To clarify what can be expected from models the role of modelling in the scientific process in relation to experiments and field studies is addressed. Hypotheses to explain vertical migration are reviewed with respect to the selection mechanism assumed; it is asked whether group selection instead of individual selection arguments are used explicitly or
Gabriel, W., Gabriel, Wilfried
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Environmental DNA for Aquatic Monitoring: Impact of Diel Vertical Migration [PDF]

Environmental DNA
There is increasing interest in using eDNA for deriving abundance indices for biodiversity monitoring and in support of fisheries management. However, eDNA concentrations are affected by animal behavior, such as diel vertical migration, which has ...
Verena M. Trenkel, Mohamed Y. Zanni, Daniela Sint, Robin Faillettaz, Pascal Lorance, Camille Albouy   +5 more
doaj   +2 more sources

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
Ohman, MD, Mark D. Ohman
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Diel vertical migration and spatial overlap between fish larvae and zooplankton in two tropical lakes, Brazil [PDF]

Brazilian Journal of Biology
The effect of fish larvae on the diel vertical migration of the zooplankton community was investigated in two tropical lakes, Finado Raimundo and Pintado lakes, Mato Grosso do Sul State, Brazil.
PHS. Picapedra, FA. Lansac-Tôha, A. Bialetzki   +2 more
doaj   +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
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A Pilot Study on the Diel Vertical Migration Pattern of Mesopelagic Fishes in the Southern and Central South China Sea [PDF]

Journal of Marine Science and Engineering
The diel vertical migration of mesopelagic fishes in the southern (S-May station and S-Nov station) and central (C-Jun station and C-Dec station) South China Sea was investigated through a series of continuous field surveys conducted in May, June ...
Jun Zhang, Yan’e Jiang, Yuyan Gong, Yancong Cai, Xiaolan Kong, Han Tian, Qingqing Diao, Zuozhi Chen   +7 more
doaj   +2 more sources

Diel dynamics of zooplankton fecal pellet flux revealed by integrated in situ imaging observations and modeling

Limnology and Oceanography Letters
The contribution of sinking fecal pellets to the biological carbon pump depends on pellet properties, producer abundance, and the depth and timing of pellet production, which can be modulated by diel vertical migration.
Yixuan Song, Melissa Omand, Colleen A. Durkin, Margaret L. Estapa, Deborah K. Steinberg   +4 more
doaj   +2 more sources

Diel vertical migration promotes zooplankton horizontal patchiness [PDF]

Journal of Oceanography, 2020
AbstractSpatial patchiness of plankton enhances fishery production and carbon export in the ocean. While diel vertical migration (DVM) has been identified as an important factor contributing to vertical patchiness, its effect on horizontal patchiness has never been investigated.
Chen, Bingzhang, Masunaga, Eiji, Smith, Sherwood Lan, Yamazaki, Hidekatsu   +3 more
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Increased phototaxis in the field leads to enhanced diel vertical migration [PDF]

Limnology and Oceanography, 1994
Downward and upward displacement velocity of diel vertical migration in Lake Maarsseveen by the hybrid Daphnia galeata × hyalina, was correlated with the relative change in light intensity at dawn and dusk, indicating a phototactic basis for these migrations. The significance of the regression function increased over a period of 4 yr.
Ringelberg, J., Flik, B.J.G.
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