搜索结果: 61-75 共查到“知识库 海洋物理学”相关记录3965条 . 查询时间(3.215 秒)
Sapphirinid copepods as predators of doliolids: Their role in doliolid mortality and sinking flux
predators of doliolids Sapphirinid copepods
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2014/4/2
Iron, phosphorus, and nitrogen supply ratios define the biogeography of nitrogen fixation
Iron phosphorus nitrogen fixation
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2014/4/2
We present a unified conceptual framework describing the competition between diazotrophs and non–
nitrogen-fixing marine plankton and their interaction with three essential nutrient elements: nitroge...
Are similar worms different? A comparative tracer study on bioturbation in the three sibling species Marenzelleria arctia, M. viridis, and M. neglecta from the Baltic Sea
worms different bioturbation
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2014/4/2
The invasive spionid polychaetes of the genus Marenzelleria spp., consisting of the three sibling species M.
neglecta, M. viridis, and M. arctia, has been found in the Baltic Sea since the 1980s. Bec...
Light and nutrient control of photosynthesis in natural phytoplankton populations from the Chukchi and Beaufort seas, Arctic Ocean
Light nutrient control of photosynthesis
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2014/4/2
During the 2010–2011 ‘Impacts of Climate Change on the EcoSystems and Chemistry of the Arctic Pacific
Environment’ project, we measured photosynthetic parameters in natural Arctic phytoplankton assem...
Chemical diversity and spatial variability in myriad lakes in Nhecolaˆndia in the Pantanal wetlands of Brazil
Chemical diversity spatial variability Pantanal wetlands
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2014/4/2
Nearly 15,000 shallow, saline or freshwater lakes and ponds coexist in close proximity in the Nhecolaˆndia, a
24,000 km2
subregion of the Pantanal wetland in Brazil. This study aims to understa...
Effects of a wind-driven cross-shelf large river plume on biological production and CO2 uptake on the Gulf of Mexico during spring
biological production Mexico during spring
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2014/4/2
The plume of Mississippi and Atchafalaya River system (MARS) is normally confined to the continental shelf
and extends westward. During March 2010, while weather in North America was dominated by unu...
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...
Increased intracellular concentrations of DMSP and DMSO in iron-limited oceanic phytoplankton Thalassiosira oceanica and Trichodesmium erythraeum
Increased intracellular DMSO Trichodesmium erythraeum
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2014/4/2
We investigated the link between iron (Fe) limitation and intracellular dimethylsulfoniopropionate (DMSP)
concentration in two oceanic phytoplankton species, the diatom Thalassiosira oceanica and the...
Zooplankton body composition
Zooplankton body composition protozoans
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2014/4/2
I compiled literature on zooplankton body composition, from protozoans to gelatinous plankton, and report
allometric relations and average body composition. Zooplankton segregate into gelatinous and ...
Drag coefficients for single coral colonies and related spherical objects
scleractinian corals drag force coral hydrodynamics
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2014/4/1
Flows over and through coral canopies and isolated coral colonies are sometimes approximated using
arrays of spheres and cylinders, which may not adequately represent the effects of their complex geo...
The role of hydrodynamics in structuring in situ ammonium uptake within a submerged macrophyte community
nutrients water fl ow patchiness Cymodocea nodosa Caulerpa prolifera
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2014/4/1
In low-nutrient, macrophyte-dominated coastal zones, benthic ammonium (NH4
+
) uptake may be influenced by the structural properties of plant canopies via their effect on near-bed hydrodynamic...
在冰区油气开发中，海冰会导致海洋结构的强烈振动，并对结构累积疲劳损伤、上部油气管线和设备，以及操作人员健康构成很大的威胁。在海冰与直立海洋结构的相互作用中，冰荷载的幅值和频率一直是海冰工程研究的重要内容。该文针对海冰与直立海洋结构作用中的破碎过程，建立了海冰的离散单元模型。它将海冰离散为若干个规则排列且具有粘接-破碎功能的颗粒单元，并通过海冰单轴压缩试验对单元间的粘接强度进行确定；在此基础上对直立...
对渤海27个站位的表层沉积物和25个站位的柱状沉积物中总磷(TP)、无机磷(IP)及有机磷(OP)的含量及其分布特征进行了研究.结果表明,渤海表层沉积物总磷含量的变化范围为10.83～20.27 μmol·g-1,IP是表层沉积物中磷的主要存在形式,平均占TP的81%,柱状沉积物中无机磷同样占绝对优势.沉积物中总磷与无机磷的垂直分布具有由较深层向浅层增加的趋势,有机磷含量也随着深度的增加而减小,一...
The spectral slope coefficient of chromophoric dissolved organic matter (S275–295)asa tracer of terrigenous dissolved organic carbon in river-influenced ocean margins
spectral slope coefficient chromophoric dissolved organic matter terrigenous dissolved organic carbon river-influenced ocean margins
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2014/4/3
The present study demonstrates that the spectral slope coefficient of chromophoric dissolved organic matter(CDOM) between 275 nm and 295 nm (S275–295) can be used as a tracer of the percent terrigenou...
A mechanistic-based framework to understand how dissolved organic carbon is processed in a large fluvial lake
bacterial growth primary production hydrodynamic regime photodegradation residence time ecosystem-based model
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2014/4/1
Dissolved organic carbon (DOC) plays a fundamental role in the ecology of aquatic systems. Our current
understanding of the DOC dynamic in fluvial systems, however, is mostly based on empirical...