000002370 001__ 2370
000002370 005__ 20181220113749.0
000002370 0247_ $$2DOI$$a10.1371/journal.pcbi.1005988
000002370 037__ $$aARTICLE
000002370 041__ $$aeng
000002370 245__ $$aThe feasibility of equilibria in large ecosystems :$$ba primary but neglected concept in the complexity-stability debate
000002370 260__ $$c2018
000002370 269__ $$a2018-02
000002370 300__ $$a18 p.
000002370 506__ $$avisible
000002370 520__ $$9eng$$aThe consensus that complexity begets stability in ecosystems was challenged in the seventies, a result recently extended to ecologically-inspired networks. The approaches assume the existence of a feasible equilibrium, i.e. with positive abundances. However, this key assumption has not been tested. We provide analytical results complemented by simulations which show that equilibrium feasibility vanishes in species rich systems. This result leaves us in the uncomfortable situation in which the existence of a feasible equilibrium assumed in local stability criteria is far from granted. We extend our analyses by changing interaction structure and intensity, and find that feasibility and stability is warranted irrespective of species richness with weak interactions. Interestingly, we find that the dynamical behaviour of ecologically inspired architectures is very different and richer than that of unstructured systems. Our results suggest that a general understanding of ecosystem dynamics requires focusing on the interplay between interaction strength and network architecture.
000002370 546__ $$aEnglish
000002370 540__ $$acorrect
000002370 592__ $$aHEIG-VD
000002370 592__ $$bIIDE - Institut Interdisciplinaire du Développement de l'Entreprise
000002370 592__ $$cEconomie et Services
000002370 65017 $$aEconomie/gestion
000002370 6531_ $$9eng$$afood web structure
000002370 6531_ $$9eng$$asystem stability
000002370 6531_ $$9eng$$aweak interaction
000002370 6531_ $$9eng$$aspecies interactions
000002370 6531_ $$9eng$$aecological niches
000002370 6531_ $$9eng$$apredation
000002370 6531_ $$9eng$$aspecies diversity
000002370 6531_ $$9eng$$atheoretical ecology
000002370 655__ $$ascientifique
000002370 700__ $$aDougoud, Michaël$$uUniversity of Fribourg, Switzerland
000002370 700__ $$aVinckenbosch, Laura$$uUniversity of Fribourg, Switzerland ; Haute école d’ingénierie et de gestion du canton de Vaud, HES-SO // Haute Ecole Spécialisée de Suisse Occidentale
000002370 700__ $$aRohr, Rudolf P.$$uUniversity of Fribourg, Switzerland
000002370 700__ $$aBersier, Louis-Félix$$uUniversity of Fribourg, Switzerland
000002370 700__ $$aMazza, Christian$$uUniversity of Fribourg, Switzerland
000002370 773__ $$g2018,$$tPLOS computational biology
000002370 8564_ $$s4768064$$uhttps://hesso.tind.io/record/2370/files/Vinckenbosch_2018_feasibility_equilibria.pdf
000002370 8564_ $$s2985284$$uhttps://hesso.tind.io/record/2370/files/Vinckenbosch_2018_feasibility_equilibria.pdf?subformat=pdfa$$xpdfa
000002370 906__ $$aGREEN
000002370 909CO $$ooai:hesso.tind.io:2370$$pGLOBAL_SET
000002370 950__ $$aI2
000002370 980__ $$ascientifique