搜索结果: 1-15 共查到“理学 vertical migration”相关记录18条 . 查询时间(0.109 秒)
Diel and lunar cycles of vertical migration extending to below 1000 m in the ocean and the vertical connectivity of depth-tiered populations
Diel and lunar cycles vertical migration extending below 1000 m the ocean the vertical connectivity depth-tiered populations
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2014/4/2
We measured diel migration with 11 acoustic Doppler current meter profilers and consistently found diel and lunar cycles of vertical migration from 250 m down to the bathypelagic (> 1000 m). These mea...
Food web consequences of size-based predation and vertical migration of an invertebrate predator (Leptodora kindtii)
size-based predation an invertebrate predator
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2014/4/2
In an intensive study of the vertical and horizontal distribution of zooplankton in a eutrophic lake (Katepwa
Lake), we found that only adult Leptodora kindtii (. 5 mm in body size) exhibited diel ve...
Toward a more comprehensive theory of zooplankton diel vertical migration: Integrating ultraviolet radiation and water transparency into the biotic paradigm
comprehensive theory zooplankton diel vertical migration Integrating ultraviolet radiation water transparency biotic paradigm
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2014/4/4
The current prevailing theory of diel vertical migration (DVM) of zooplankton is focused largely on two biotic drivers: food and predation. Yet recent evidence suggests that abiotic drivers such as da...
Survival probability of larval sprat in response to decadal changes in diel vertical migration behavior and prey abundance in the Baltic Sea
Survival probability of larval sprat decadal changes in diel vertical migration behavior prey abundance Baltic Sea
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2014/4/17
We employed a coupled three-dimensional biophysical model to explore long-term inter- and intra-annual variability in the survival of sprat larvae in the Bornholm Basin, a major sprat spawning area in...
Zooplankton vertical migration and plasticity of pigmentation arising from simultaneous UV and predation threats
Zooplankton vertical migration plasticity of pigmentation arising simultaneous UV predation threats
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2014/4/17
We assessed how zooplankton (copepods) handle the simultaneous threats of predators and ultraviolet (UV) radiation and whether they respond with changes in pigmentation, vertical migration, or both. W...
Role of oxidative stress in seasonal and daily vertical migration of three krill species in the Gulf of California
Role of oxidative stress seasonal
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2014/4/17
Vertical distribution and abundance of three numerically dominant krill species (Nyctiphanes simplex,
Nematoscelis difficilis, and Euphausia eximia) were surveyed in the Gulf of California to underst...
Comparison of zooplankton vertical migration in an ice-free and a seasonally ice-covered Arctic fjord: An insight into the influence of sea ice cover on zooplankton behavior
zooplankton vertical migration sea ice
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2014/4/16
We present observations of zooplankton diel vertical migration (DVM) over a period of 2 yr in an ice-free and
a seasonally ice-covered Arctic fjord. The contrasting environments permitted assessment ...
Upward phosphorus transport by Daphnia diel vertical migration
Daphnia diel vertical migration phosphorus
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2014/4/16
In many lakes, zooplankton show a distinct diel vertical migration (DVM) behavior, especially during periods
of stratification. Excretion products of these zooplankton could potentially cause an upwa...
Diel vertical migration of the deep-water jellyfish Periphylla periphylla simulated as individual responses to absolute light intensity
he deep-water jellyfish Periphylla periphylla simulated absolute light intensity
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2014/4/17
We evaluate the hypothesis that the vertical migration of Periphylla periphylla is governed by its sensitivity to
light intensity. By applying an individual-based model where random walk is combined ...
The spatial dynamics of vertical migration by Microcystis aeruginosa in a eutrophic shallow lake: A case study using high spatial resolution time-series airborne remote sensing
The spatial dynamics of vertical migration Microcystis aeruginosa in a eutrophic shallow lake A case study using high spatial resolution time-series airborne remote sensing
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2014/4/21
Time-series airborne remote sensing was used to monitor diurnal changes in the spatial distribution of a bloom of the potentially toxic cyanobacterium Microcystis aeruginosa in the shallow eutrophic w...
Diel periodicity in both sei whale vocalization rates and the vertical migration of their copepod prey observed from ocean gliders
Diel periodicity both sei whale vocalization rates the vertical migration their copepod prey observed ocean gliders
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2014/5/16
The daily activity cycles of marine predators may be dictated in large part by the timing of prey availability. For example, recent studies have observed diel periodicity in baleen whale vocalization ...
Diel periodicity in both sei whale vocalization rates and the vertical migration of their copepod prey observed from ocean gliders
Diel periodicity whale vocalization rates
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2014/4/18
The daily activity cycles of marine predators may be dictated in large part by the timing of prey availability.
For example, recent studies have observed diel periodicity in baleen whale vocalization...
Diel vertical migration of individual jellyfish (Periphylla periphylla)
Diel vertical migration individual jellyfish
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2014/4/22
Vertical migration of the mesopelagic jellyfish Periphylla periphylla (Scyphozoa: Coronatae) was studied by use of hull-mounted and submerged echosounders in a ~440 m deep Norwegian fjord. The researc...
Unsynchronized and synchronized vertical migration of zooplankton in a high arctic fjord
Unsynchronized synchronized vertical
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2014/5/5
We measured vertical migration of zooplankton in an arctic fjord at 79uN between June and September 2002
and transcending a period of continuous illumination to one of true day and night to investiga...
Effect of net avoidance on estimates of diel vertical migration
net avoidance estimates diel vertical migration
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2014/5/19
Diel vertical migration (DVM) has been hypothesized to actively transport organic material out of the euphotic layer, thus forming a novel part of the ‘‘biological pump.’’ However,...