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Erschienen in: Population Ecology 1/2015

01.01.2015 | Special Feature: Original Article

Interaction-type diversity hypothesis and interaction strength: the condition for the positive complexity-stability effect to arise

verfasst von: Michio Kondoh, Akihiko Mougi

Erschienen in: Population Ecology | Ausgabe 1/2015

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Abstract

Recently, a theoretical hypothesis was proposed that the coexistence of antagonism and mutualism may stabilize ecological community and even give rise to a positive complexity-stability relationship (interaction-type diversity hypothesis). This hypothesis was derived from an analysis of community model, which was developed based on two specific assumptions about the interaction strengths: those are, (i) different interaction types, antagonism and mutualism, have quantitatively comparable magnitude of effects to population growth; and (ii) interaction strength decreases with increasing interaction links of the same interaction type. However, those assumptions do not necessarily hold in real ecosystems, leaving unclear how robust this hypothesis is. Here, using a model with those two assumptions relaxed, we show (i) that the balance of interaction strength is necessary for the positive complexity effect to arise and (ii) that interaction-type diversity hypothesis may still hold when interaction strength decreases with increasing links of all interaction type for some species.

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Metadaten
Titel
Interaction-type diversity hypothesis and interaction strength: the condition for the positive complexity-stability effect to arise
verfasst von
Michio Kondoh
Akihiko Mougi
Publikationsdatum
01.01.2015
Verlag
Springer Japan
Erschienen in
Population Ecology / Ausgabe 1/2015
Print ISSN: 1438-3896
Elektronische ISSN: 1438-390X
DOI
https://doi.org/10.1007/s10144-014-0475-9

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