Prof. Yuri V. Tyutyunov
1. Southern Scientific Centre of the Russian Academy of Sciences (SSC RAS), Chekhov Street, 41, Rostov-on-Don 344006, Russia
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Academic Career Length
37Years (1990-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications1 July 2003 in The American Naturalist
Journal Article
We study a reaction-diffusion-advection model for the dynamics of populations under biological control. A control agent is assumed to be a predator species that has the ability to perceive the heterogeneity of pest distribution. The advection term represents the predator density movement according to a basic prey taxis assumption: acceleration of predators is proportional to the prey density gradient. The prey population reproduces logistically, and the local population interactions follow the Holling Type II trophic function. On the scale of the population, our spatially explicit approach subdivides the predation process into random movement represented by diffusion, directed movement described by prey taxis, local prey encounters, and consumption modeled by the trophic function. Thus, our model allows studying the effects of large-scale predator spatial activity on population dynamics. We show under which conditions spatial patterns are generated by prey taxis and how this affects the predator ability to maintain the pest population below some economic threshold. In particular, intermediate taxis activity can stabilize predator-pest populations at a very low level of pest density, ensuring successful biological control. However, very intensive prey taxis destroys the stability, leading to chaotic dynamics with pronounced outbreaks of pest density.
1 May 2001 in Theoretical Population Biology
Journal Article
RAR. Arditi
R. ArditiYuri V. Tyutyunov
Andrey MorgulisVGVasily Govorukhin
Vasily GovorukhinISI. Senina
I. Senina
1 November 2010 in Ecological Modelling
Journal Article
NSNatalia Sapoukhina
Natalia SapoukhinaYuri V. TyutyunovISIvan Sache
Ivan SacheRARoger Arditi
Roger Arditi1 September 2017 in Ecological Complexity
Journal Article
Yuri V. TyutyunovLTLyudmila I. Titova
Lyudmila I. TitovaISInna N. Senina
Inna N. Senina
1 November 2004 in Comptes Rendus. Biologies
Journal Article
RARoger Arditi
Roger ArditiJCJean-Marc Callois
Jean-Marc CalloisYuri V. TyutyunovCJChristian Jost
Christian JostBased on a qualitative analysis of ODE systems, the dynamic properties of alternative predator–prey models with predator-dependent functional response have been compared in order to study the role that predator interference plays in the stabilisation of trophic systems. The models considered for interference have different mathematical expressions and different conceptual foundations. Despite these differences, they give essentially the same qualitative results: when interference is low, increasing it has a positive effect on asymptotic stability and thus on the resilience of the biological system. When it is high, it is the contrary (with logistic prey growth, increasing the interference parameter ensures stability but leads to very small predator densities). Possible consequences on the evolution of the interference level in real ecosystems are discussed.
31 August 2008 in Theoretical Population Biology
Journal Article
Yuri V. TyutyunovEZEkaterina Zhadanovskaya
Ekaterina ZhadanovskayaDBDenis Bourguet
Denis BourguetRARoger Arditi
Roger ArditiAbout Me
Dr.Sci. Yuri
V. Tyutyunov is a Chief Researcher in the laboratory of Information Technologies
and Mathematical Modelling at the Southern Scientific Centre of the Russian
Academy of Sciences (SSC RAS, Rostov-on-Don, Russia). In 2010 he has defended his Dr.Sci. thesis in Physical and Mathematical Sciences at the Institute of Biophysics of the Siberian Branch of the Russian Academy of Sciences (Krasnoyarsk). Earlier,
in 1988 he has defended his PhD thesis at Lomonosov Moscow State University. He
is an applied mathematician with over 40 years of research experience in
mathematical ecology and ecological modelling, with a special focus on theory
of trophic interactions, harvesting optimization, extinction risk assessment, biological control, animal spatial behavior and natural selection. He worked for the Research
Institute of Mechanics and Applied Mathematics at Rostov State University (Rostov-on-Don, Russia), the Institute of Zoology and Ecology of Animals of the Lausanne
University (IZEA UNIL, Switzerland), Paris-Sud (Paris-XI) University (Orsay, France), was
a visiting Professor at Institut National Agronomique Paris-Grignon (INAP-G,
AgroParisTech), and the Pierre and Marie Curie (Paris-VI) University. Yuri Tyutyunov is a Board Member of the Section "E3: Mathematical Biology" and Collection Editor of the topical collection "Theoretical and Mathematical Ecology" of Mathematics, Editorial Advisory Board member of Ecological Complexity.