The Phylogenetic Distribution of Obligate Mutualism: Evidence of Limiting Similarity and Global Instability

Oikos ◽  
1982 ◽  
Vol 39 (2) ◽  
pp. 273 ◽  
Author(s):  
Frédéric Briand ◽  
Peter Yodzis ◽  
Frederic Briand
Keyword(s):  
Limiting Similarity ◽  
Phylogenetic Distribution ◽  
Global Instability ◽  
Obligate Mutualism

scholarly journals Co-occurrences of tropical trees in eastern South America: disentangling abiotic and biotic forces

Plant Ecology ◽  
2021 ◽  
Author(s):  
Emma-Liina Marjakangas ◽  
Otso Ovaskainen ◽  
Nerea Abrego ◽  
Vidar Grøtan ◽  
Alexandre A. de Oliveira ◽  
...  
Keyword(s):  
South America ◽  
Tree Species ◽  
Large Scale ◽  
Environmental Filtering ◽  
Limiting Similarity ◽  
Phylogenetic Relatedness ◽  
Biogeographical Regions ◽  
Dependent Processes ◽  
Occurrence Of Species

AbstractSpecies co-occurrences in local communities can arise independent or dependent on species’ niches. However, the role of niche-dependent processes has not been thoroughly deciphered when generalized to biogeographical scales, probably due to combined shortcomings of data and methodology. Here, we explored the influence of environmental filtering and limiting similarity, as well as biogeographical processes that relate to the assembly of species’ communities and co-occurrences. We modelled jointly the occurrences and co-occurrences of 1016 tropical tree species with abundance data from inventories of 574 localities in eastern South America. We estimated species co-occurrences as raw and residual associations with models that excluded and included the environmental effects on the species’ co-occurrences, respectively. Raw associations indicate co-occurrence of species, whereas residual associations indicate co-occurrence of species after accounting for shared responses to environment. Generally, the influence of environmental filtering exceeded that of limiting similarity in shaping species’ co-occurrences. The number of raw associations was generally higher than that of the residual associations due to the shared responses of tree species to the environmental covariates. Contrary to what was expected from assuming limiting similarity, phylogenetic relatedness or functional similarity did not limit tree co-occurrences. The proportions of positive and negative residual associations varied greatly across the study area, and we found a significant tendency of some biogeographical regions having higher proportions of negative associations between them, suggesting that large-scale biogeographical processes limit the establishment of trees and consequently their co-occurrences.

The evolution of obligate mutualism: if you can’t beat ’em, join ’em

2007 ◽  
Vol 22 (10) ◽  
pp. 506-509 ◽  
Author(s):  
Duur K. Aanen ◽  
Rolf F. Hoekstra
Keyword(s):  
Obligate Mutualism

Phylogenetic distribution of microRNAs supports the basal position of acoel flatworms and the polyphyly of Platyhelminthes

2007 ◽  
Vol 9 (5) ◽  
pp. 409-415 ◽  
Author(s):  
Lorenzo F. Sempere ◽  
Pedro Martinez ◽  
Charles Cole ◽  
Jaume Baguñà ◽  
Kevin J. Peterson
Keyword(s):  
Phylogenetic Distribution ◽  
Basal Position

Coalescence of Saffman-Taylor fingers: A new global instability

1986 ◽  
Vol 33 (5) ◽  
pp. 3625-3627 ◽  
Author(s):  
David A. Kessler ◽  
Herbert Levine
Keyword(s):  
Global Instability

scholarly journals Instable Trivial Solution of Autonomous Differential Systems with Quadratic Right-Hand Sides in a Cone

2011 ◽  
Vol 2011 ◽  
pp. 1-23 ◽  
Author(s):  
D. Ya. Khusainov ◽  
J. Diblík ◽  
Z. Svoboda ◽  
Z. Šmarda
Keyword(s):  
Trivial Solution ◽  
Sufficient Conditions ◽  
Zero Solution ◽  
Dimensional System ◽  
Global Instability ◽  
Degree Polynomial ◽  
Differential Systems ◽  
Right Hand ◽  
The Matrix ◽  
Full Derivative

The present investigation deals with global instability of a generaln-dimensional system of ordinary differential equations with quadratic right-hand sides. The global instability of the zero solution in a given cone is proved by Chetaev's method, assuming that the matrix of linear terms has a simple positive eigenvalue and the remaining eigenvalues have negative real parts. The sufficient conditions for global instability obtained are formulated by inequalities involving norms and eigenvalues of auxiliary matrices. In the proof, a result is used on the positivity of a general third-degree polynomial in two variables to estimate the sign of the full derivative of an appropriate function in a cone.

Non-Random Fruit Retention in Yucca filamentosa: Consequences for an Obligate Mutualism

Oikos ◽  
1997 ◽  
Vol 78 (3) ◽  
pp. 576 ◽  
Author(s):  
Chad J. Huth ◽  
Olle Pellmyr
Keyword(s):  
Obligate Mutualism
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