What Are the Major Nonliving Components or the Ecosystem?
The physical factors that influence living organisms are sunlight and shade, average temperature and temperature range, average precipitation and its timing, wind, latitude, altitude, frequency of fire, nature of soil, water currents and amount of suspended solid material in aquatic-ecosystems. The chemical factors affecting ecosystems are water, air in the soil, plant nutrients dissolved in soil and water, level of toxic substances, salinity and levels of dissolved oxygen in aquatic systems. How Much Change in Abiotic Factors Can Populations Tolerate? Each population has a range of tolerance to variations in its physical and chemical environment. The largest number ofindividuals in a population will be in fhe optimum level or range, While a few can survive above or below that range (possibly in stress), but no individuals can survive outside of the range of tolerance. The law of tolerance: the existence, abundance, and distribution of a species in an ecosystem are determined by whethe
