A keystone mutualism drives pattern in a power function.
Data that can be described by a power function are ubiquitous in nature. Although there is consensus that such data frequently emerge generally from nonlinear complex systems, a variety of specific mechanisms may be responsible for creating the pattern in particular cases. Here, we report on the distribution of a scale insect (Coccus viridis) that is a common agricultural pest. Its distribution in an organic coffee farm in southern Mexico generally follows a power function, but there are subtle deviations from that function. We offer a biological explanation for both adherence to the power functions and associated deviations, along with supporting evidence.
Vandermeer
John
J
Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI 48109, USA. jvander@umich.edu
Perfecto
Ivette
I
D000818:Animals; D001000:Ants / Q000502:physiology*; D040503:Coffea; D001517:Coleoptera / Q000502:physiology; D017753:Ecosystem; D006430:Hemiptera / Q000469:parasitology / Q000502:physiology*; D008433:Mathematics; D008800:Mexico; D008954:Models, Biological; D011156:Population Density; D011157:Population Dynamics; D011158:Population Growth; D011235:Predatory Behavior; D013559:Symbiosis; D014863:Wasps / Q000502:physiology