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Multifractal random walk in copepod behavior

Francccois G. Schmitt, Laurent Seuront
2001 Physica A: Statistical Mechanics and its Applications  
A 3D copepod trajectory is recorded in the laboratory, using 2 digital cameras. The copepod undergoes a very structured type of trajectory, with successive moves displaying intermittent amplitudes.  ...  We perform a statistical analysis of this 3D trajectory using statistical tools developed in the field of turbulence and anomalous diffusion.  ...  Lagadeuc for initiating the collaboration with the Laboratory of Chemical Engineering Sciences.  ... 
doi:10.1016/s0378-4371(01)00429-0 fatcat:mtwd72z3tjcdvkfdbbktrxyg3q

Why ratio dependence is (still) a bad model of predation

Peter A. Abrams
2014 Biological Reviews  
The effects of enrichment on three-species food chains with nonlinear functional responses. Ecology 75, 1118-1130. ABRAMS, P. A. & Vos, M. (2003).  ...  Abrams One of the more careful laboratory studies looking at enrichment with three trophic levels in a strict food-chain setting (Kaunzinger & Morin, 1998) found the enrichment responses predicted by prey-dependent  ... 
doi:10.1111/brv.12134 pmid:25099654 fatcat:gkwzbpelojf6vefc6ayp3phgnm

Nanoparticle diffusometry for quantitative assessment of submicron structure in food biopolymer networks

Daan W. de Kort, John P.M. van Duynhoven, Henk Van As, François Mariette
2015 Trends in Food Science & Technology  
At the submicron scale, food biopolymer networks can be visualized by a wide array of microscopic techniques, but these methods are mostly invasive and require careful image analysis in order to quantify  ...  A range of applications to polysaccharide and protein sols and gels has been described.  ...  Acknowledgments This research received funding from the Netherlands Organization for Scientific Research (NWO) in the framework of the Technology Area COAST.  ... 
doi:10.1016/j.tifs.2014.11.003 fatcat:hfpbikq7dbepzcyc7374rewvc4

Spatiotemporal Complexity of Plankton and Fish Dynamics

Alexander B. Medvinsky, Sergei V. Petrovskii, Irene A. Tikhonova, Horst Malchow, Bai-Lian Li
2002 SIAM Review  
dozens to hundreds of kilometers, dominated by the heterogeneity of hydrophysical fields.  ...  The dynamics of these biological communities exhibit an interplay between processes acting on a scale from hundreds of meters to kilometers, controlled by biology, and processes acting on a scale from  ...  Valerii Prostokishin for his help in running some of the numerical experiments, to Prof. Ezio Venturino for fruitful dis-  ... 
doi:10.1137/s0036144502404442 fatcat:565xfwdv2jgv7ersf62lfnbv7q

Non-equilibrium behavior of small carbohydrate-water systems

L. Slade, Harry Levine
1988 Pure and Applied Chemistry  
Successful treatments require a new approach to emphasize the kinetic description, relate time-temperature-concentration-pressure through underlying mobility transformation, and establish reference conditions  ...  Small carbohydrate-water systems provide a unique framework for the investigation of non-equilibrium behavior: definition of conditions for its empirical demonstration, examination of materials properties  ...  Felix Franks, for many years of scientific stimulation and professional encouragement.  ... 
doi:10.1351/pac198860121841 fatcat:kmmra7mgdbbwdc7bazk2zqiexq

Festschrift on the occasion of Ulrike Feudel's 60th birthday

Jan A. Freund, Ksenia Guseva, Celso Grebogi
2017 The European Physical Journal Special Topics  
[38] with the objective to clarify the effect of species dispersal on a spatial ecological system consisting of heterogeneous fragmented habitats.  ...  ) motif and a food chain.  ... 
doi:10.1140/epjst/e2017-70084-6 fatcat:mjyjfpyzrfhyvbq2gttbsfjrua

Recent contributions of statistical mechanics in chemical engineering

Michael W. Deem
1998 AIChE Journal  
Some of the recent ad®ances that ha®e been made by chemical engineers in the field of statistical mechanics, as well as some of the new products and processes that ha®e resulted from these ad®ances, are  ...  which the kinetics must become anomalous.  ...  We found that certain types of dis-Ž . order lead to anomalous kinetics in the long time limit: c t A ; bt ␦y1 .  ... 
doi:10.1002/aic.690441202 fatcat:bhuxiwazlberlf75fwjya52yt4

Negative differential mobility in interacting particle systems

Amit Kumar Chatterjee, Urna Basu, P. K. Mohanty
2018 Physical review. E  
We also introduce and solve exactly the steady state of several driven diffusive systems, including a two species exclusion model, asymmetric misanthrope and zero-range processes, to show explicitly that  ...  Driven particles in presence of crowded environment, obstacles or kinetic constraints often exhibit negative differential mobility (NDM) due to their decreased dynamical activity.  ...  We show that the system undergoes a cross-over from an initial fastrelaxing homogeneous state to a lane state via an intermediate heterogeneous state with anomalous dynamical responses, like the exponential  ... 
doi:10.1103/physreve.97.052137 pmid:29906917 fatcat:q4z2aaqbivg5ngro5prv65tat4

Movement Patterns of the Eastern Chipmunk (Tamias striatus) in Four Fragmented Landscapes of Prince Edward Island, Canada

Sheldon B. Opps, Leslie A. Cudmore, Marina Silva-Opps
2020 Open Journal of Ecology  
The transition point at 2 m was negatively correlated with the density of small trees, while the transition at ~5 m was positively correlated with the spatial distribution of large trees.  ...  Overall, we determined three principal domains of movement: at smaller spatio-temporal scales, foraging activities dominate and the movement is highly correlated but also random; at intermediate spatial  ...  Acknowledgements We thank Prince Edward Island National Park and the Department of Biology of the University of Prince Edward Island (UPEI) for access to their lands, and the Conflicts of Interest The  ... 
doi:10.4236/oje.2020.1010042 fatcat:g6dzjr2dlnewha6b2zewcsdz5e

A Major Ecosystem Shift in Coastal East African Waters During the 1997/98 Super El Niño as Detected Using Remote Sensing Data

Zoe L. Jacobs, Fatma Jebri, Meric Srokosz, Dionysios E. Raitsos, Stuart C. Painter, Francesco Nencioli, Kennedy Osuka, Melita Samoilys, Warwick Sauer, Michael Roberts, Sarah F. W. Taylor, Lucy Scott (+2 others)
2020 Remote Sensing  
The likely negative impacts on local fish stocks in Kenya, affecting fishers' livelihoods and food security, and the temporary increase in pelagic fishery species' productivity in Tanzania are highlighted  ...  We demonstrate that this situation is specific to the 1997/98 El Niño when compared with other the super El-Niño events of 1972,73, 1982–83 and 2015–16.  ...  Chl-a data available online at (https://oceancolor.gsfc.nasa.gov/data/czcs/).  ... 
doi:10.3390/rs12193127 fatcat:irrjvolh7jbx7fkq5eubq55a2q

Organic films at the halocline

R. Fauzi C. Mantoura
1987 Nature  
Zutic and LegoviC's results" showing a strong enrichment of particulate and surfaceactive biogenic organics and pollutants may also render the FSI a site for pollutant incorporation into food chains.  ...  The dominance of the free Cd2+ species in river water is, within 3 %0, dramatically reduced to less than 20 per cent by a sequential surge of three orders of magnitude in CdCl+, CdCl, and CdCI)-complexes  ... 
doi:10.1038/328579a0 fatcat:tuut7rqsybhgfnfkrp6psrwurq

Morphology, spatial distribution, and concentration of flame retardants in consumer products and environmental dusts using scanning electron microscopy and Raman micro-spectroscopy

Jeff Wagner, Sutapa Ghosal, Todd Whitehead, Catherine Metayer
2013 Environment International  
The number of individual FR-containing particles expected in a 1-mg dust sample with a FR concentration of 100ppm ranged from <1 to >1000 particles.  ...  We developed an equation to describe the heterogeneity of FR-containing particles in environmental dust samples.  ...  Acknowledgments Dust collection in the Northern California Childhood Leukemia Study (NCCLS) was supported by the National Institute of Environmental Health Sciences grant number R01ES015899).  ... 
doi:10.1016/j.envint.2013.05.003 pmid:23739093 pmcid:PMC3759544 fatcat:u2cvz5espfhcxiv7mqxlbkyina

How does climate change influence arctic mercury?

Gary A. Stern, Robie W. Macdonald, Peter M. Outridge, Simon Wilson, John Chételat, Amanda Cole, Holger Hintelmann, Lisa L. Loseto, Alexandra Steffen, Feiyue Wang, Christian Zdanowicz
2012 Science of the Total Environment  
6) How will climate change alter the structure and dynamics of freshwater food webs, and thereby affect the bioaccumulation of mercury?  ...  7) How will climate change alter the structure and dynamics of marine food webs, and thereby affect the bioaccumulation of marine mercury?  ...  The results presented and discussed in this review are the culmination of research funding received from a number of granting agencies some of which include; ArcticNet, a Canadian Network Centres of Excellence  ... 
doi:10.1016/j.scitotenv.2011.10.039 pmid:22104383 fatcat:zcm5yxgkpfekdoyyay47fy7eci

Pore Forming Protein Induced Biomembrane Reorganization and Dynamics: A Focused Review

Ilanila Ilangumaran Ponmalar, Nirod K. Sarangi, Jaydeep K. Basu, K. Ganapathy Ayappa
2021 Frontiers in Molecular Biosciences  
bacterial PFTs, cytolysin A (ClyA), an α-toxin and listeriolysin O (LLO), a β-toxin.  ...  With the advent of superresolution microscopy as well as the ability to carry out molecular dynamics (MD) simulations of the large protein membrane assemblies, novel microscopic insights on the pore forming  ...  We thank the Supercomputer Education and Research Center, Indian Institute of Science for computational facilities.  ... 
doi:10.3389/fmolb.2021.737561 pmid:34568431 pmcid:PMC8459938 fatcat:i2skfertgbgwdhz4gcxsq6xvlm

Label free Affinity sensing: application to food analysis

Simona Scarano, Stefano Mariani, Maria Minunni
2016 ACTA IMEKO  
Quartz Crystal Microbalance (QCM) are described and some applications to food analysis problems are reported.  ...  In particualr pesticide, endotoxins, pathogens, Genetically Modified Organism (GMOs) detection and food origin analysis are reviewed.  ...  At a governmental level, food safety control for public health protection covers the range of different food chains related to a certain food product or product group, including all relevant producers,  ... 
doi:10.21014/acta_imeko.v5i1.283 fatcat:ljjz465lkzgfvbhdf3ntqurmmu
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