Combined effect of successive competition periods on population dynamics

نویسنده

  • Masahiro Anazawa
چکیده

This study investigates the effect of competition between individuals on population dynamics when they compete for different resources during different seasons or during different growth stages. Individuals are assumed to compete for a single resource during each of these periods according to one of the following competition types: scramble, contest, or an intermediate between the two. The effect of two successive competition periods is determined to be expressed by simple relations on products of two “transition matrices” for various sets of competition types for the two periods. In particular, for the scramble and contest competition combination, results vary widely depending on the order of the two competition types. Furthermore, the stability properties of derived population models as well as the effect of more than two successive competition periods are discussed.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The Impact of Size-dependent Predation on Population Dynamics and Individual Life History

In size-structured predator–prey systems, capture success depends on the sizes of both predator and prey. We study the population-dynamic consequences of sizedependent predation using a model of a size-structured, cannibalistic fish population with one shared, alternative resource. We assume that a prey can be captured by a predator if the ratio of prey length to predator length is within a spe...

متن کامل

Comparison of The Effect of Eight Weeks of Combined Exercises and Caffeine Supplementation on Anaerobic Capacity, Fatigue index, Aerobic Endurance and Skill Test in Elite Female Taekwondo Athletes

Introduction and purpose: One of the concerns of professional athletes is to increase their performance. In intense activities, the rapid exhaustion of energy and the increase of lactic acid accumulation are among the factors of performance reduction during a period of competition. The purpose of this study was comparing the effect of eight weeks of combined training and caffeine supplementatio...

متن کامل

Bistable Perception Modeled as Competing Stochastic Integrations at Two Levels

We propose a novel explanation for bistable perception, namely, the collective dynamics of multiple neural populations that are individually meta-stable. Distributed representations of sensory input and of perceptual state build gradually through noise-driven transitions in these populations, until the competition between alternative representations is resolved by a threshold mechanism. The per...

متن کامل

Dynamics of an eco-epidemic model with stage structure for predator

The predator-prey model with stage structure for predator is generalized in the context of ecoepidemiology, where the prey population is infected by a microparasite and the predator completely avoids consuming the infected prey. The intraspecific competition of infected prey is considered. All the equilibria are characterized and the existence of a Hopf bifurcation at the coexistence equilibriu...

متن کامل

Environmental colour intensifies the Moran effect when population dynamics are spatially heterogeneous

Evidence for synchronous fluctuations of spatially separated populations is ubiquitous in the literature, including accounts within and across taxa. Among the few mechanisms explaining this phenomenon is the Moran effect, whereby independent populations are synchronized by spatially correlated environmental disturbances. The body of research on the Moran effect predominantly assumes that enviro...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2010