How can you explain the role of the law of ecological individuality of species in creating optimal

How can you explain the role of the law of ecological individuality of species in creating optimal conditions for the vital activity of organisms?

The law of the limiting (limiting) factor states that the most significant factor for the organism is the factor that deviates most from its optimal value. The survival of the organism depends on this, minimally (or maximally) presented at a given moment. At other times, other factors may be limiting. During their life, individuals of the species meet with a variety of restrictions on their life. Thus, the factor limiting the spread of deer is the depth of the snow cover; butterflies of the winter scoop (a pest of vegetables and grain crops) – winter temperature, etc.

This law is taken into account in the practice of agriculture. The German chemist J. Liebig found that the productivity of cultivated plants, first of all, depends on the nutrient (mineral element) that is most weakly presented in the soil. For example, if phosphorus in the soil is only 20% of the required norm, and calcium – 50% of the norm, then the limiting factor will be the lack of phosphorus; it is necessary first of all to add phosphorus-containing fertilizers to the soil.

Y. Liebig called this rule the “minimum rule”, as he studied the effect of insufficient doses of fertilizers. Later it turned out that the excess of mineral salts in the soil also reduces the yield, since this disrupts the ability of the roots to absorb salt solutions.



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