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Continuous and impulsive harvesting strategies in a stage-structured predator–prey model with time delay

Yongzhen, Pei; Changguo, Li; Lansun, Chen - In: Mathematics and Computers in Simulation (MATCOM) 79 (2009) 10, pp. 2994-3008

attractive. The conditions of permanence are established by the method of comparison involving multiple Liapunov functions and …

Persistent link: https://www.econbiz.de/10010870299

Dynamic analysis of a pest-epidemic model with impulsive control

Pang, Guoping; Chen, Lansun - In: Mathematics and Computers in Simulation (MATCOM) 79 (2008) 1, pp. 72-84

Based on biological control strategy in pest management, we construct and investigate a pest-epidemic model with impulsive control, i.e., periodic spraying microbial pesticide and releasing infected pests at different fixed moments. By using Floquet theorem and comparison theorem, we prove that...

Persistent link: https://www.econbiz.de/10011050695

COMPLEX DYNAMICS OF ONE-PREY MULTI-PREDATOR SYSTEM WITH DEFENSIVE ABILITY OF PREY AND IMPULSIVE BIOLOGICAL CONTROL ON PREDATORS

PEI, YONGZHEN; LI, CHANGGUO; CHEN, LANSUN; WANG, CHUNHUA - In: Advances in Complex Systems (ACS) 08 (2005) 04, pp. 483-495

than some critical value, and a permanence condition is established via the method of comparison involving multiple …

Persistent link: https://www.econbiz.de/10005047425

COMPLEXITY OF AN IVLEV'S PREDATOR-PREY MODEL WITH PULSE

PANG, GUOPING; CHEN, LANSUN - In: Advances in Complex Systems (ACS) 10 (2007) 02, pp. 217-231

In this paper, we investigate the extinction, permanence and dynamic complexity of the two-prey, one-predator system … with Ivlev's functional response and impulsive perturbation on the predator at fixed moments. Conditions for the extinction … and permanence of the system are established via the comparison theorem. Numerical simulations are carried out to explain …

Persistent link: https://www.econbiz.de/10005080947

PERMANENCE, AVERAGE PERSISTENCE AND EXTINCTION IN NONAUTONOMOUS SINGLE-SPECIES GROWTH CHEMOSTAT MODELS

REHIM, MEHBUBA; TENG, ZHIDONG - In: Advances in Complex Systems (ACS) 09 (2006) 01, pp. 41-58

boundedness, permanence, persistence, average persistence and extinction of the population is established. In particular, when … models degenerate into the almost periodic case, the equivalences of the permanence, persistence and average persistence of …

Persistent link: https://www.econbiz.de/10005080967

CHAOTIC BEHAVIOR OF A PERIODICALLY FORCED PREDATOR–PREY SYSTEM WITH BEDDINGTON–DEANGELIS FUNCTIONAL RESPONSE AND IMPULSIVE PERTURBATIONS

ZHANG, SHUWEN; TAN, DEJUN; CHEN, LANSUN - In: Advances in Complex Systems (ACS) 09 (2006) 03, pp. 209-222

The effects of periodic forcing and impulsive perturbations on the predator–prey model with Beddington–DeAngelis functional response are investigated. We assume periodic variation in the intrinsic growth rate of the prey as well as periodic constant impulsive immigration of the predator. The...

Persistent link: https://www.econbiz.de/10005047391

Cost-effectiveness of aflatoxin control methods: economic incentive.

Wu, Felicia; Liu, Yan; Bhatnagar, Deepak - 2008

Multiple sectors within U.S. crop industries - - -growers, elevators, handlers/shell- ers, processors, distributors, and consumers - - -are affected by aflatoxin contamination of commodities, and have the potential to control it using methods developed at both the pre- and postharvest levels....

Persistent link: https://www.econbiz.de/10009429567

Biological control of invasive plant species: stochastic economic analysis

Chalak-Haghighi, Morteza; Ruijs, Arjan; Ierland, Ekko C. van - Australian Agricultural and Resource Economics Society … - 2009

We analysed to what extent the stochastic effects of two biological control agents (i.e. weevils and mycoherbicides) affect the optimal choice of Californian thistle control. A stochastic, dynamic optimisation model was set up to analyse strategies that maximise the expected net present values....

Persistent link: https://www.econbiz.de/10005503375

Educational Needs of Corn Farmers Regarding Biological Control Bracon Parasitoid of Corn Caradrina in Dezful Township, Khouzestan Province, Iran

Ommani, Ahmad Reza; Khadem, Ali Jafar - In: International Journal of Agricultural Management and … 01 (2011) 2

The purpose of research was analyzing educational needs of corn farmer's regarding biological control Bracon parasitoid of corn Caradrina in Dezful Township, Khouzestan province, Iran. The method of research was correlative descriptive. A random sample of Dezful township corn farmers of...

Persistent link: https://www.econbiz.de/10011142593

Economic Efficiency of Agricultural Rodent Control Using

Kan, Iddo; Motro, Yoav; Horvitz, Nir; Kimhi, Ayal; … - Department of Agricultural Economics and Management, … - 2012

Abstract We develop an empirical framework for evaluating the profitability of the use of barn owls to control rodent populations by locating nesting boxes in agricultural areas. Barn owls’ behavior is incorporated into the analysis by estimated functions that relate agricultural production to...

Persistent link: https://www.econbiz.de/10010879042