@thesis{thesis, author={Hasrila F1A114017}, title ={Model Dinamika Fotosintesis Pada Alga}, year={2019}, url={http://repo.uho.ac.id/616/}, abstract={DYNAMIC MODEL OF PHOTOSYNTHESIS IN ALGAE By HASRILA F1A114017 ABSTRACT In life on earth, living things really need oxygen, which is obtained from the photosynthesis of plants and algae. In the process of photosynthesis of algae, it involves various elements including algae, chlorophyll, glucose, oxygen, and carbon dioxide, light intensity, and water. In this paper, discussing the photosynthetic dynamics model in algae with the aim to find out the photosynthetic dynamics model in algae and to obtain the completion behavior of photosynthetic dynamics models in algae. In making dynamic models on algae, several assumptions are used to form a model scheme. From this scheme will be formed a mathematical model photosynthesis of algae. From the mathematical model two non-negative equilibrium points are obtained i.e the trivial equilibrium point E_0^*=(A_0,K_0,G_0,S_0,C_0)=(0,0,0,0,C) and the non-trivial equilibrium point E_1^*=(A_1,K_1,G_1,S_1,C_1). To see the behavior of dynamic models on algae, numerical simulations are used to obtain the eigenvalue for the point around the equilibrium. The eigenvalue shows that the behavior of the model around consecutive equilibrium points is saddle point and stable spiral. Keyword :Algae photosynthesis, equilibrium point, the nature of the stability} }