Simple versus complex models of trait evolution and stasis as a response to environmental change.

Single Versus Multi-Faceted Implementation Strategies – Is There a Simple Answer to a Complex Question? A Response to Recent Commentaries and a Call to Action for Implementation Practitioners and Researchers

An inquiry in historical evolution and retrieval of the process of formation and transformation of Shah Wali complex, Taft, Iran

Abstract This study was carried out to investigate and shed light on the complex theoretical concept of place, as a continuing dynamic phenomenon, in architecture. To this end, it has looked into the historical evolutions and retrieval of the Shah Wali complex in Taft. Considering the topic and the goal of this research paper, the morphological analysis as a tool used in the interpretive-histor...

Reviewing the harvest index estimation in crop modeling

H Harvest index (HI), ratio of seed yield to aboveground dry matter, is a very important parameter for estimating seed yield in several crop models. In this study, the importance, definition, variability and estimation methods of HI in crop models were discussed. HI estimation methods are categorized into two groups including: (i) complex methods that estimate HI from the beginning of seed gro...

The relative importance of directional change, random walks, and stasis in the evolution of fossil lineages.

The nature of evolutionary changes recorded by the fossil record has long been controversial, with particular disagreement concerning the relative frequency of gradual change versus stasis within lineages. Here, I present a large-scale, statistical survey of evolutionary mode in fossil lineages. Over 250 sequences of evolving traits were fit by using maximum likelihood to three evolutionary mod...

Ecological bistability and evolutionary reversals under asymmetrical competition.

How does the process of life-history evolution interplay with population dynamics? Almost all models that have addressed this question assume that any combination of phenotypic traits uniquely determine the ecological population state. Here we show that if multiple ecological equilibria can exist, the evolution of a trait that relates to competitive performance can undergo adaptive reversals th...