Adaptation and Survival of Population PDF

 Explain how species diversity increases the probability of adaptation and survival of organism in changing environment. Explain the relationship between population growth and carrying capacity. HM M M M M ?  FACT! ⚬ ⚬  BIODIVERSITY BIODIVERSITY D...

 Explain how species diversity increases the probability of adaptation and survival of organism in changing environment. Explain the relationship between population growth and carrying capacity. HM M M M M ?  FACT! ⚬ ⚬  BIODIVERSITY BIODIVERSITY DIRECT ECONOMIC VALUE It is when the organism itself is being use. Indirect ECONOMIC VALUE It is when an organism provides benefits without using the organism itself.  AESTHETIC VALUE It is when an organism is being used for visual or artistic enjoyment. _____________ 1. Fruits being eaten _____________ 2. Trees providing shade _____________ 3. Ornamental plants in a garden _____________ 4. Animal skin used as belt _____________ 5. Guava leaves as medicine _____________ 6. Animal meat for dishes _____________ 7. Plants providing oxygen _____________ 8. Bamboo used for nipa hut _____________ 9. Plant on a center table _____________10. Fish in an aquarium Feature of population  Age distribution It refers to the number of organisms of each age in a given population. PRE-REPRODUCTIVE JUVENILES REPRODUCTIVE ADULTS POST REPRODUCTIVE ADULTS Population pyramid It refers to age structure of a given population.  fecundity It is the number of offspring of a given individual or population over time. Population pressure It is described as the change in environment and the dispersal of individuals following an increase in the intensity of population. Population pressure Active Dispersal- Whole Organism Passive Dispersal- Disseminules (Part of an Organism that can reproduce) POPULATION density The number of organisms in a given area. POPULATION GROWTH It is the expected as the size of the population increases rapidly. However, decline when a majority of the members are at the post-reproductive category. POPULATION GROWTH Birth Rate (Natality) Death Rate (Mortality)  POPULATION size It is the total number of members of a population.  STABILITY If an ecosystem can regulate itself and stand even after an event, stability then exists.  Exponential growth It is distinguished by a constant birth rate over time that is not influenced by a lack of food or the presence of sickness. Carrying capacity It is the maximum number of individuals for a particular species that the environment can “carry” or sustain.  limiting factor These key factors have the influence to limit or reduce a population size by lowering birth rates, increasing the death rates or even encourage migration.  density dependent limiting factor It is where the population’s growth is affected directly by population density or the organisms themselves.  density dependent limiting factor 1.DISEASES AND PARASITES 2.COMPETITION FOR RESOURCES; 3.PREDATION; AND 4. EMIGRATION  density independent limiting factor It is where the population growth has nothing to do with the population’s density.  density independent limiting factor 1. NATURAL DISASTERS; 2. TEMPERATURE; 3. SUNLIGHT; 4. HUMAN ACTIVITIES IN THE ENVIRONMENT.