Green world hypothesis of hairston smith and slobodkin hss. The green world hypothesis is credited with bringing attention to the role of top down forces eg. Nelson was also deeply interested in the factors that control human disease and was an adviser to the world health organization for many years. This paper is cited in every modern ecology text book. Community structure population control and competition.
Hairston smith and slobodkin 1960 what is the hss hypothesis also known as. Predation and indirect effects in shaping ecological communities. Was an american ecologist. The world is green nelson g.
Smith and lawrence b. Hairston ng smith fe slobodkin lb. In the field of ecology he is famous for championing the idea of the trophic cascade on which he published the provocative green world hypothesis with colleagues frederick e. The hss hypothesis the world is green today we read one of the seminal papers in all of ecology by hairston smith and slobodkin published in the american naturalist in 1960.
Hairston is well known for his work in ecology and human disease. Their results support the so called green world hypothesis first proposed in 1960 by hairston smith and slobodkin and seem to lay to rest the competing theory that plants protect themselves from being eaten through the physical and chemical defences they have developed. Their results support the so called green world hypothesis first proposed in 1960 by united states scientists nelson hairston frederick smith and lawrence slobodkin. Start studying ecology herbivory predation.
The green world hypothesis. The classic hss that is hairston smith and slobodkin paper addresses this central question of ecology head on discussing the factors that limit populations and illustrating a vibrant elegantly interacting system of plants herbivores predators and decomposers. Smith and lawrence b. Slobodkin 1960 but why is the world green.
Learn vocabulary terms and more with flashcards games and other study tools. Hairston smith and slobodkin argued that predators reduce the abundance of herbivores allowing plants to flourish. Problems with hss 1 often not supported experimentally 2 many plants are defended chemically and structurally cactus spines lignins kelp secondary compounds. World is green because it green isnt always edible.
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