POPULATION GROWTH MODEL
POPULATION GROWTH MODEL
1. Exponential
Growth Model
In the exponential growth model,
population increase over time is a result of the number of individuals
available to reproduce without regard to resource limits
Some assumptions are
used in predicting population growth Exponential, that is:
1. Constant birth and
death rate.
2. There is no genetic
structure.
3. There is no
structure of age difference and size.
4. No time delay.
Let N denote the size
of a population and t denote time. Then Nt is the number of individuals in a
population at time t.
Picture
1. Curve of Exponential Growth Model
2.
Logistic
Growth Model
Logistic
model is used because in reality in nature that big size, the population
depends on its density, so that the rate of birth and death rate are not
constant (Haberman, 1977). Inpopulations with high density, each individual has
few available resources and the population grows slowly, or even stops
altogether. High density a population will decrease the birth rate in a linear
and increasing manner the rate of death is linear as well.
Picture 2. Curve of Logistic Growth Model
goodjob da :) postingannya bermanfaat sekali lengkap dan bahasanya mudah kupahami
BalasHapusmakasih inok
BalasHapusmungkin ada yang mau ditanyakan atau mau menambahkan tentang materiku?
bagus Rida,
BalasHapusmungkin bisa diberikan contoh kasus agar lebih memahami model eksponensial dan logistik
oke, terima kasih ruri
BalasHapusSingkat, mudah dipahami. Terimakasih ridaa. Semoga ilmunya semakin bermanfaat lagi yaa
BalasHapusNice one
BalasHapusSebenarnya saya masih bingung dengan penggunaan eksponesial dan logistik
BalasHapusKemudian faktor apa yang bisa menyebabkan eksponesial berubah menjadi logistik dan begitu pula sebaliknya ?
jadi perbedaan diantara keduanya bagaimana ?
BalasHapus