Why the World Stays Green

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The world remains green because herbivore populations are limited by a lack of high-quality, nitrogen-rich food, which prevents them from overconsuming plant life. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

Andrew McGuire

doi:10.7273/000008539

September 1, 2026Open Access

Why the World Stays Green

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Key Points

To evaluate why global plant biomass remains largely unconsumed despite the presence of widespread herbivore populations.
Assessed theoretical ecological models linking herbivore abundance to forage quality.
Examined the hypothesis that dietary nitrogen constraints regulate herbivore population growth and consumption.
Herbivore populations are constrained by a scarcity of accessible, nitrogen-rich food.
Nutritional deficits in forage prevent herbivores from multiplying sufficiently to deplete available green foliage.

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Abstract

A leading hypothesis suggests the world stays green because herbivores lack enough high-quality, nitrogen-rich food to thrive.

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Andrew McGuire (2026) studied this question.

synapsesocial.com/papers/6a9a85fa5d9e33f25c6316f2 https://doi.org/10.7273/000008539

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Why the World Stays Green

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Why the World Stays Green

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