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"ABSTRACTSkripsi ini membahas model predator-prey dengan faktor migrasi pada populasi prey dan pemanenan pada populasi predator. Dilakukan proses nondimensionaliasi pada sistem dengan tujuan menjadikan persamaan-persamaan lebih sederhana serta seluruh parameter dan peubah yang terlibat adalah dalam bentuk tanpa dimensi. Analisis secara matematis digunakan untuk menemukan titik keseimbangan pada sistem tanpa faktor migrasi dan pada sistem dengan dua patch. Kestabilan lokal untuk titik-titik keseimbangan kepunahan dan koeksistensi dianalisis menggunakan metode pelinieran dengan matriks Jacobian dan nilai eigennya. Beberapa analisis potret fase disertakan untuk memberikan pema- haman yang lebih baik terhadap kestabilan dari solusi keseimbangan. Simulasi numerik diberikan untuk menunjukkan bagaimana dampak pemanenan populasi predator dan migrasi populasi prey terhadap dinamika populasi dari sistem.

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ABSTRACTThis thesis discusses the predator-prey model with migration factors in the prey population and harvesting in the predator population. Nondimensionaliasi process carried out on the system with the aim of making the equations simpler and all parameters and variables involved are in a dimensionless form. Mathematical analysis is used to find the balance point in systems without migration factors and in systems with two patches. Local stability for points of balance of interest and coexistence was analyzed using the linearity method with the Jacobian matrix and its eigenvalue. Several phase portrait analyzes are included to provide a better understanding of the stability of the balance solution. Numerical simulations are given to show how the impact of harvesting predatory populations and population predation on population dynamics of the system."

"ABSTRACTSkripsi ini membahas model predator-prey dengan Allee effect pada populasi prey dan pemanenan pada kedua populasi. Allee effect adalah situasi ketika pertumbuhan populasi pada populasi berkepadatan rendah berkurang ketika ukuran populasi nya berada dibawah koefisien Allee. Intervensi pemanenan ilegal pada populasi predator dan prey diperhitungkan ke dalam model bersama dengan persaingan internal pada populasi predator. Analisis matematika digunakan untuk menemukan titik ekuilibrium. Stabilitas lokal untuk titik-titik ekuilibrium kepunahan dan koeksistensi dianalisis menggunakan metode linearisasi dengan matriks Jacobian. Analisa bidang fase juga diberikan untuk memberikan interpretasi yang lebih baik untuk hasil sebelumnya. Beberapa simulasi numerik diberikan untuk menunjukkan bagaimana intervensi pemanenan dapat menyebabkan kepunahan pada kedua populasi ketika tidak terkontrol.

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ABSTRACTThis thesis discussed predator prey model with Allee effect on prey population and harvesting in both populations. Allee effect is a situation for a small population when the population growth is reduced when it is under overcrowding. Intervention of illegal harvesting in both predator and prey population included into the model along with internal competition of predator population. Mathematical analysis to find the equilibrium points conducted analytically. Local stability for the extinction and coexistence equilibrium points are analyze using the linearization method with the Jacobian matrix. Phase portrait analysis also given to give a better interpretation for the previous result. Some numerical simulation are given to show how harvesting intervention can lead into an extinction of both population when it is uncontrolled. This thesis discussed predator prey model with Allee effect on prey population and harvesting in both populations. Allee effect is a situation for a small population when the population growth is reduced when it is under overcrowding. Intervention of illegal harvesting in both predator and prey population included into the model along with internal competition of predator population. Mathematical analysis to find the equilibrium points conducted analytically. Local stability for the extinction and coexistence equilibrium points are analyze using the linearization method with the Jacobian matrix. Phase portrait analysis also given to give a better interpretation for the previous result. Some numerical simulation are given to show how harvesting intervention can lead into an extinction of both population when it is uncontrolled."

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