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Environmental constraints of the invasiveMnemiopsis leidyiin Scandinavian waters
Environmental constraints invasive Mnemiopsis leidyiin Scandinavian waters
2014/4/2
We studied the seasonal dynamics of the invasive ctenophoreMnemiopsis leidyiover its distribution range from Skagerrak into the Baltic Proper during 1 yr and related this to ambient physical and biolo...
Stoichiometric dietary constraints influence the response of copepods to ultraviolet radiation-induced oxidative stress
Stoichiometric dietary constraints the response of copepods ultraviolet radiation-induced oxidative stress
2014/4/17
We carried out field experiments in two clear mountain lakes of both hemispheres (Lake Los Ca′ ntaros,Patagonia, Argentina, and Lake La Caldera, Sierra Nevada, Spain) performing a full factorial desig...
Parameter Estimation with Constraints Based on Variational Method
least squares estimation parameter estimation variational method constraint
2011/9/9
The accuracy of parameter estimation is critical when digitally modeling a ship. A parameter estimation method with constraints was developed, based on the variational method. Performance functions an...
Autochthonous and allochthonous contributions to mesozooplankton diet in a tidal river and estuary: Integrating carbon isotope and fatty acid constraints
Autochthonous allochthonous contributions
2014/4/17
We examined the carbon sources used by bacteria and mesozooplankton in the Scheldt River and estuary
(Belgium, The Netherlands) using a combined stable isotope and fatty acid composition approach. Wa...
General integral relationships are derived for joint eddies in a three-layer ocean model as considered by Nof. The model is composed of two eddies in two superposed layers, the third layer being motio...
Data Constraints Applied to Models of the Ocean General Circulation. Part I：The Steady Case
Data Constraints Ocean General Circulation Steady Case
2009/1/13
In this work we take a first step in the process of assimilating data into models of the ocean general circulation. The goals is not prediction but rather understanding how the data insertion process ...
Data Constraints Applied to Models of the Ocean General Circulation. Part II：The Transient, Eddy-Resolving Case
quasi-geostrophic Data Constraints Ocean General Circulation
2009/1/6
In Part I of the present work we performed assimilation experiments with a multilayer, quasi-geostrophic (QG) eddy-resolving model of the ocean general circulation. In Part I we studied the quasi-line...
Variational Assimilation of XBT Data. Part II. Sensitivity Studies and Use of Smoothing Constraints
Variational Assimilation XBT Data Smoothing Constraints
2008/12/27
A linear reduced-gravity model of the tropical pacific is used to assimilate XBT data. The model cannot fit the data in the eastern equatorial Pacific for the whole assimilation period. Several experi...
Potential Vorticity Constraints on the Dynamics and Hydrography of the Southern Ocean
Southern Ocean Dynamics Hydrography potential vorticity
2008/12/17
Constraints on the hydrography and geostrophic velocity shear of the Southern Ocean implicit in its potential vorticity field are discussed and illustrated by diagnostic study of observed and modeled ...
Nutritional constraints at the cyanobacteria–Daphnia magnainterface: The role of sterols
Nutritional constraints the cyanobacteria–Daphnia magnainter face sterols
2014/4/21
In past decades, a considerable amount of research has been conducted to elucidate the factors that affect the carbon transfer across the cyanobacteria–Daphniainterface. It is well accepted that cyano...
Food-web structure and planktonic predator–prey relationships in two eutrophic European lakes: Stability constraints on carbon fluxes
Food-web structure planktonic predator–prey relationships two eutrophic European lakes Stability constraints carbon fluxes
2014/4/21
The food webs in two eutrophic European lakes were analyzed with respect totheir stability characteristics.The food web during the summer in Lake Nesjøvatn (Norway) appeared to be stable; its res...
Evidence for visual constraints in large marine fish stocks
Evidence for visual constraints large marine fish stocks
2014/4/22
I tested the hypothesis that the abundance of visually constrained fish stocks relate inversely to light attenuation for the Black Sea, where long time series of fish stocks and Secchi depths are avai...
Phytoplankton essential fatty acid and phosphorus content constraints on Daphnia somatic growth and reproduction
Phytoplankton essential fatty acid phosphorus content constraints Daphnia somatic growth reproduction
2014/5/5
We performed 12 experiments where the herbivorous zooplankter Daphnia pulex was fed three different phytoplankton food types (cyanophytes, chlorophytes, or cryptophytes) at two phosphorus (P) deficien...
Spatial variability of stable isotopes and fossil pigments in surface sediments of Alaskan coastal lakes: Constraints on quantitative estimates of past salmon abundance
Spatial variability stable isotopes fossil pigments surface sediments Alaskan coastal lakes Constraints on quantitative estimates past salmon abundance
2014/5/4
We quantified spatial patterns of stable isotopes of N and C (δ15N, δ13C) and fossil pigment concentrations in the uppermost 10 mm of sediment (,10 yr) from 74 profundal locations and three spawning-s...
Biomarker and carbon isotopic constraints on bacterial and algal community structure and functioning in a turbid, tidal estuary
Biomarker carbon isotopic constraints bacterial and algal community structure functioning tidal estuary
2014/5/8
We studied planktonic community structure and isotopic composition using compound-specific 13C analysis of phospholipid-derived fatty acids (PLFA) along the Scheldt estuary during a spring bloom. A co...