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There are situations in which one of the competitors drives the other competitors out of the market and other situations in which the market reaches an equilibrium where each firm stabilizes on its market share. It can be used to describe the dynamics in a market with several competitors, complementary platforms and products, a sharing economy, and more. The Lotka Volterra model has additional applications to areas such as economics and marketing. This is as predicted by the equilibrium population densities of the Lotka–Volterra predator-prey model, and is a feature that carries over to more elaborate models in which the restrictive assumptions of the simple model are relaxed. The addition of iron typically leads to a short bloom in phyoplankton, which is quickly consumed by other organisms (such as small fish or zooplankton) and limits the effect of enrichment mainly to increased predator density, which in turn limits the carbon sequestration. The expectation was that iron, which is a limiting nutrient for phytoplankton, would boost growth of phytoplankton and that it would sequester carbon dioxide from the atmosphere.
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In several experiments large amounts of iron salts were dissolved in the ocean. A demonstration of this phenomenon is provided by the increased percentage of predatory fish caught had increased during the years of World War I (1914–18), when prey growth rate was increased due to a reduced fishing effort.Ī further example is provided by the experimental iron fertilization of the ocean. Making the environment better for the prey benefits the predator, not the prey (this is related to the paradox of the pesticides and to the paradox of enrichment). D x d t = α x − β x y, d y d t = δ x y − γ y, , leads to an increase in the predator equilibrium density, but not the prey equilibrium density.