搜索结果: 61-75 共查到“理学 benthic”相关记录123条 . 查询时间(0.089 秒)
Structure of mass and momentum fields over a model aggregation of benthic filter feeders
Structure of mass momentum fields model aggregation benthic filter feeders
2010/1/14
The structure of momentum and concentration boundary layers developing over a bed of Potamocorbula amurensis clam mimics was studied. Laser Doppler velocimetry (LDV) and laser-induced fluorescence (LI...
The effect of long-term spatiotemporal variations in urbanization-induced eutrophication on a benthic ecosystem, Osaka Bay, Japan
spatiotemporal variations urbanization-induced eutrophication a benthic ecosystem Osaka Bay Japan
2014/4/22
Detailed spatiotemporal patterns of the influence of urbanization-induced eutrophication on a metazoan benthic community in Osaka Bay were determined using sediment cores and fossil ostracode assembla...
Biophysicochemical process coupling controls nitrogen use by benthic biofilms
Biophysicochemical process coupling controls nitrogen benthic biofilms
2014/4/22
A combination of macroscale and microscale observations was used to show that the interplay between hydrodynamic transport, local chemical conditions, and microbial metabolism controls nitrate use by ...
Early diagenesis and trophic role of extracellular DNA in different benthic ecosystems
Early diagenesis extracellular DNA different benthic ecosystems
2014/4/22
To provide new insights into the early diagenesis of extracellular deoxyribonucleic acid (DNA) and its relevance in trophodynamic processes, we collected sediment samples from a variety of coastal and...
Benthic solute exchange and carbon mineralization in two shallow subtidal sandy sediments: Effect of advective pore-water exchange
Benthic solute exchange carbon mineralization
2014/4/22
We conducted four field campaigns to evaluate benthic O2
consumption and the effect of advective pore-water
flow in nearshore permeable sediments in the North Sea and Baltic Sea. Advective pore-wate...
The effects of grazing by the snail, Lymnaea elodes, on benthic N2 fixation and primary production in oligotrophic, arctic lakes
snail Lymnaea elodes on benthic N2 fixation primary production oligotrophic arctic lakes
2014/4/21
This study assessed whether grazing by the snail, Lymnaea elodes, limits benthic dinitrogen (N2) fixation and primary production in nitrogen (N)-limited oligotrophic lakes near Toolik Field Station on...
Bioturbation changes the patterns of benthic emergence in zooplankton
Bioturbation changes the patterns benthic emergence zooplankton
2014/4/21
We investigated the effects of two functionally different deposit feeders, the amphipod Monoporeia affinis and the bivalve Macoma balthica, on the benthic emergence of copepods (Acartia spp., Eurytemo...
Effect of the diffusive boundary layer on benthic mineralization and O2 distribution: A theoretical model analysis
Effect of the diffusive boundary layer benthic mineralization O2 distribution: A theoretical model analysis
2014/4/23
On the basis of a dynamic diagenetic model, we evaluate and discuss the effect of the diffusive boundary layer (DBL) on benthic O2 exchange and O2 consuming pathways. The analysis documents that the D...
Light availability in the coastal ocean:impact on the distribution of benthic photosynthetic organisms and their contribution to primary production
Light availability coastal ocean benthic photosynthetic organisms primary production
2010/1/13
One of the major features of the coastal zone is that part of its sea floor receives a significant amount of sunlight and can therefore sustain benthic primary production by seagrasses, macroalgae, mi...
Stable isotopes in subtidal food webs: Have enriched carbon ratios in benthic consumers been misinterpreted?
subtidal food webs Have enriched carbon ratios
2014/5/5
We examined the hypothesis that the d13
C of benthic consumers is depleted in offshore, deeper waters where
kelp and benthic microalgae are absent by conducting three analyses: (1) we analyzed d13
...
Photosynthetic performance of benthic microbial mats in Lake Hoare, Antarctica
Photosynthetic performance benthic microbial mats Lake Hoare Antarctica
2014/5/4
We measured in situ photosynthesis of benthic microbial mats at various depths in Lake Hoare, a permanently ice-covered lake of the McMurdo Dry Valleys, Antarctica, using oxygen (O2) microelectrodes. ...
Top-down control from the bottom: Regulation of eutrophication in a large river by benthic grazing
Regulation of eutrophication benthic grazing
2014/4/30
We use a 15-yr record from a 100-km stretch of the tidal, freshwater Hudson River to examine the controls of
phytoplankton biomass. Across years, seasonal mean chlorophyll a (Chl a) and maximum Chl a...
Benthic microbial and whole-community responses to different amounts of 13 C-enriched algae: In situ experiments in the deep Cretan Sea (Eastern Mediterranean)
Benthic microbial whole-community responses
2014/4/23
The deep eastern Mediterranean Sea is one of the most oligotrophic regions of the world’s oceans and is therefore
highly suitable for investigating the response of a resource-limited deep-sea benthic...
Stable isotope signatures of benthic invertebrates in arctic lakes indicate limited coupling to pelagic production
Stable isotope signatures benthic invertebrates
2014/4/23
We tested the hypotheses that benthic macroinvertebrates, especially chironomid larvae in the Tribe Chironomini,
from small oligotrophic arctic lakes are only weakly linked to pelagic food sources, a...
Inter-annual variability of the Pelagic-Benthic coupling in the upwelling system off central Chile
the Pelagic-Benthic coupling the upwelling system central Chile
2010/1/25
The coastal region of central Chile (36° S) is one of the most productive coastal systems, characterized by a marked seasonality in the upwelling regime, that brings subsurface waters rich in nutrient...