Journal
POPULATION ECOLOGY
Volume 57, Issue 1, Pages 63-75Publisher
SPRINGER JAPAN KK
DOI: 10.1007/s10144-014-0471-0
Keywords
Complexity; Eigenvalue; Food web; Random matrix; Stability
Categories
Funding
- NSF [1148867]
- Division Of Environmental Biology
- Direct For Biological Sciences [1148867] Funding Source: National Science Foundation
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Since the work of Robert May in 1972, the local asymptotic stability of large ecological systems has been a focus of theoretical ecology. Here we review May's work in the light of random matrix theory, the field of mathematics devoted to the study of large matrices whose coefficients are randomly sampled from distributions with given characteristics. We show how May's celebrated stability criterion can be derived using random matrix theory, and how extensions of the so-called circular law for the limiting distribution of the eigenvalues of large random matrix can further our understanding of ecological systems. Our goal is to present the more technical material in an accessible way, and to provide pointers to the primary mathematical literature on this subject. We conclude by enumerating a number of challenges, whose solution is going to greatly improve our ability to predict the stability of large ecological networks.
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