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      DAMPAK PARTIKEL MIKROPLASTIK TERHADAP DINAMIKA POPULASI MANGSA DAN PEMANGSA

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      Date
      2026
      Author
      Syukur, Dicky Arya Arjuna
      Sianturi, Paian
      Kusnanto, Ali
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      Abstract
      Hubungan mangsa dan pemangsa membentuk dinamika populasi yang dapat dituangkan ke dalam model matematika. Pencemaran lingkungan menjadi salah satu faktor yang memengaruhi dinamika populasi mangsa dan pemangsa. Penelitian ini akan memodifikasi model yang dikembangkan oleh Huang et al. (2020) untuk melihat pengaruh mikroplastik pada dinamika populasi mangsa dan pemangsa. Selanjutnya ditentukan titik tetap dan kestabilannya, serta dilakukan analisis sensitivitas dan simulasi numerik. Simulasi numerik dilakukan dengan memvariasikan parameter tingkat penyerapan mikroplastik pada mangsa dan pemangsa, serta jumlah mikroplastik di lingkungan. Hasil simulasi menunjukkan bahwa perubahan parameter tidak mengubah sifat kestabilan dasar titik tetap, namun memengaruhi dinamika populasi mangsa dan pemangsa. Peningkatan jumlah mikroplastik di lingkungan meningkatkan akumulasi mikroplastik pada kedua populasi dan memperlambat proses menuju kestabilan. Hasil simulasi juga menunjukkan indikasi nilai ambang batas mikroplastik yang dapat menyebabkan sistem kehilangan kestabilan jika melebihi nilai ambang batas.
       
      The relationship between prey and predator forms population dynamics that can be expressed in mathematical models. Environmental pollution is one factor that influences the population dynamics of prey and predator. This study will modify the model developed by Huang et al. (2020) to examine the influence of microplastics on the population dynamics of prey and predators. After that, it will determine and analyze the fixed point and its stability, sensitivity analysis and numerical simulation. Numerical simulations were conducted by varying the parameters of the microplastic uptake rate in prey and predator, as well as the amount of microplastics in the environment. The simulation results show that parameter changes do not alter the basic stability properties of the fixed point, but affect the population dynamics. Increasing the amount of microplastics increases microplastic accumulation in both populations and slows the process towards stability. The results also indicate a threshold value for microplastics which can cause the system to lose stability if it exceeds the threshold.
       
      URI
      http://repository.ipb.ac.id/handle/123456789/173120
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      • UT - Mathematics [100]

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      Copyright © 2020 Library of IPB University
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      Contact Us | Send Feedback
      Indonesia DSpace Group 
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      Universitas Jember Digital Repository