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Animal personality and the ecological impacts of freshwater non-native species

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Current Zoology 2014年第3期60卷 417-427页

作者： Tristan JUETTE CNRS Universite Paul Sabatier ENFA UMR 5174 EDB (Laboratoire Evolution & Diversite Biologique) universite toulouse 3 paul sabatier CNRS

While the ecological impacts of invasive species have been demonstrated for many taxonomic groups, the potential effects of behavioural variation among nonnative individuals （i.e. personality） on these impacts have been largely overlooked. This is despite the fact that recent studies have demonstrated that, by nature, the three first stages of biological invasions （i.e. transport, establishment and spread） can lead to personalitybiased populations. Freshwater ecosystems provide a unique oppor tunity to investigate this issue, notably because the ecological impacts of nonnative species have been extensively documented and because animal personality has been widely studied using freshwater model species. Here, we aim at developing some per spectives on the potential effects of animal personality on the ecological impacts of freshwater nonnative species across levels of biological organizations. At the individual level, personality types have been demonstrated to affect the physiolo gy, metabolism, life history traits and fitness of individuals. We used these effects to discuss how they could subsequently impact invaded popula tions and, in turn, recipient communities. We also discussed how these might translate into changes in the structure of food webs and the functioning of invaded ecosystems. Finally we discussed how these perspectives could interact with the management of invasive species .

关键词： Biological invasions Behavioural syndromes Aquatic ecosystems Temperaments Behavioural types Cascadingeffects

Segmentations of foreland belts and their tectonic mechanism in the Southwest Tarim Basin

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Science China Earth Sciences 2005年第10期48卷 1585-1598页

作者： J. Canerot J. deramond Lab. de Bassin Dynamique Sedimentaire Universite Paul Sabatier Toulouse III 39 Allee Jules-Guesde 31062 Toulouse FranceLab. de Bassin Dynamique Sedimentaire Universite Paul Sabatier Toulouse III 39 Allee Jules-Guesde 31062 Toulouse France

Based on lots of field investigations and comprehensive interpretations of seismic profiles with outcrop cross-sections, this paper shows that the foreland belts surrounding the Southwest Tarim Foreland Basin have the regularity of segmentation along the strike of foreland belts. There are many thin-skinned thrusting systems thrusting from mountains to the basin and the arcuate back-thrusting systems to the mountains distributed at intervals in the front of West Kunlun-Pamir and Southern Tianshan. Between thrusting and back-thrusting systems, the strike-slip faults developed. The northeast uplifts and depressions of Southwest Tarim Basin correspond with the segmentation of foreland basin. The thin-skinned thrusting system is formed in the case that the thickness of sedimentary covers is less than 10 km in depth where the basement is an uplift belt in general. The back-thrusting systems and triangle zones are formed in the case that the thickness of sedimentary covers is larger than 8 km in depth where the basement is a depression zone. The main mechanics of segmentation of foreland basin are the difference of mountain uplift and deformation rate along the longitude of the mountains, the huge sedimentary rocks in different depression centers, the uplift belts and depression zones in the basement rocks, and multi-displaced weak layers in the foreland basin. The segmentation of Southwest Tarim Foreland Basin is due to the intra-plate deformation of re-orogenies of West Kunlun-Pamir and Southwest Tianshan and the co-related deformation between mountains and basement of basin since Neocene.

关键词： Southwest Tarim Basin, foreland basin,West Kunlun-Pamir and Tianshan, tectonic segmentation,structure of basement.

All Speed Scheme for the Low Mach Number Limit of the Isentropic Euler Equations

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Communications in Computational Physics 2011年第6期10卷 1-31页

作者： Pierre degond Min Tang Institute of Mathematics of toulouse Universite Paul Sabatier118route de Narbonne31062 Toulouse cedexFrance

An all speed scheme for the Isentropic Euler equations is presented in thispaper. When the Mach number tends to zero, the compressible Euler equations converge to their incompressible counterpart, in which the density becomes a constant. Increasing approximation errors and severe stability constraints are the main difficultyin the low Mach regime. The key idea of our all speed scheme is the special semiimplicit time discretization, in which the low Mach number stiff term is divided intotwo parts, one being treated explicitly and the other one implicitly. Moreover, the fluxof the density equation is also treated implicitly and an elliptic type equation is derivedto obtain the density. In this way, the correct limit can be captured without requesting the mesh size and time step to be smaller than the Mach number. Compared withprevious semi-implicit methods [11,13,29], firstly, nonphysical oscillations can be suppressed by choosing proper parameter, besides, only a linear elliptic equation needs tobe solved implicitly which reduces much computational cost. We develop this semiimplicit time discretization in the framework of a first order Local Lax-Friedrichs (orRusanov) scheme and numerical tests are displayed to demonstrate its performances.

关键词： Low Mach number Isentropic Euler equations compressible flow incompressible limit asymptotic preserving Rusanov scheme

Interleukin 7 regulates switch transcription in developing B cells

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Cellular & Molecular Immunology 2021年第3期18卷 776-778页

作者： Audrey Dauba Fatima-Zohra Braikia Chloe Oudinet Ahmed Amine Kham lichi Mnstitut de Pharmacologie et de Biologie Structurale IPBSUniversite de ToulouseCNRSUniversity Paul Sabatier31077 ToulouseFrance

Class switch recombination(CSR)enables activated mature B cells to change immunoglobulin(Ig)isotype expression from IgM to IgG,IgE,or *** process requires activation-induced cytidine deaminase(AID)expression and transcription of the target sequences at the Ig heavy chain(IgH)constant locus,which is composed of multiple constant(C_(H))genes,each specifying an Ig isotype.

关键词： Interleukin enable IgH

Bounded critical Fatou components are Jordan domains for polynomials

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Science China Mathematics 2022年第2期65卷 331-358页

作者： Pascale Roesch Yongcheng Yin Institut de Mathematiques de toulouse Universite Paul SabatierToulouse 31062France School of Mathematical Sciences Zhejiang UniversityHangzhou 310027China

We prove that any bounded Fatou component of a polynomial of degree at least two, which is not(eventually) a Siegel disk, is a Jordan domain.

关键词： Fatou component Jordan domain puzzle local connectivity

Bounded type Siegel disks of finite type maps with few singular values dedicated to the Memory of Professor Lei Tan

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Science China Mathematics 2018年第12期61卷 2139-2156页

作者： Arnaud Chéritat Adam Lawrence Epstein CNRS Institut de Mathematiques de ToulouseUniversite Paul SabatierToulouse F-31062France Mathematics Institute University of WarwickCoventry CV47ALUK

Let U be an open subset of the Riemann sphere C. We give sufficient conditions for which a finite type map f : U →C with at most three singular values has a Siegel disk compactly contained in U and whose boundary is a quasicircle containing a unique critical point. The main tool is quasiconformal surgery à la Douady-Ghys-Herman-(S′)wia tek. We also give sufficient conditions for which, instead, ? has not compact closure in U. The main tool is the Schwarzian derivative and area inequalities à la Graczyk-(S′)wia tek.

关键词： Siegel disks quasicircles quasiconformal surgery Schwarzian derivative

A Stein deficit for the logarithmic Sobolev inequality

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Science China Mathematics 2017年第7期60卷 1163-1180页

作者： LEDOUX Michel NOURDIN Ivan PECCATI Giovanni Institut de Mathematiques de toulouse Universite de Toulouse-Paul-Sabatier Toulouse F-31062 France Institut Universitaire de France UR en Mathematiques-FSTC Luxembourg University Luxembourg City L-1359 Luxembourg

We provide some lower bounds on the deficit in the Gaussian logarithmic Sobolev inequality in terms of the so-called Stein characterization of the Gaussian *** techniques are based on the representation of the relative Fisher information along the Ornstein-Uhlenbeck semigroup by the Minimum Mean-Square Error from information theory.

关键词： deficit logarithmic Sobolev inequality Ornstein-Uhlenbeck semigroup minimum mean-square error Stein kernel

Rigidity of non-renormalizable Newton maps

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Science China Mathematics 2024年第4期67卷 855-872页

作者： Pascale Roesch Yongcheng Yin Jinsong Zeng Institut de Mathématiques de toulouse Universite Paul SabatierToulouse 31062France School of Mathematical Sciences Zhejiang UniversityHangzhou 310027China College of Mathematics and Statistics Shenzhen UniversityShenzhen 518061China

Non-renormalizable Newton maps are *** precisely,we prove that their Julia sets carry no invariant line fields and that a topological conjugacy between them is equivalent to a quasiconformal conjugacy.

关键词： Newton map non-renormalizable rigidity invariant line field

A Generalized Stationary Algorithm for Resonant Tunneling:Multi-Mode Approximation and High Dimension

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Communications in Computational Physics 2011年第9期10卷 882-898页

作者： Naoufel Ben Abdallah Hao Wu department of Mathematical Sciences Tsinghua UniversityBeijing10084China Institut de Math´ematiques de toulouse Universite Paul Sabatier118route de Narbonne31062 Toulouse CedexFrance.

The multi-mode approximation is presented to compute the interior wave function of Schr¨odinger *** idea is necessary to handle the multi-barrier and high dimensional resonant tunneling problems where multiple eigenv... 详细信息

关键词： Schrodinger equation numerical scheme resonant tunneling multi-mode approximation high dimension.