Zones de contact

Clustering of contact zones, hybrid zones, and phylogeographic breaks in North America.

A recent test for the existence of suture zones in North America, based on hybrid zones studied since 1970, found support for only two of the 13 suture zones identified by Remington in 1968 (Swenson and Howard 2004). One limitation of that recent study was the relatively small number of hybrid zones available for mapping. In this study, we search for evidence of clustering of contact zones betw...

Flat and sigmoidally curved contact zones in vesicle-vesicle adhesion.

Using the membrane-bending elasticity theory and a simple effective model of adhesion, we study the morphology of lipid vesicle doublets. In the weak adhesion regime, we find flat-contact axisymmetric doublets, whereas at large adhesion strengths, the vesicle aggregates are nonaxisymmetric and characterized by a sigmoidally curved, S-shaped contact zone with a single invagination and a compleme...

Contact Zones, Third Spaces, and the Act of Interpretation

The conceptual understanding of museums as ‘contact zones’ has been widely appropriated in the museum literature and beyond. But the discussion lacks empirical insights into actual experiences: What does ‘contact’ mean for the person experiencing it? How is it lived, negotiated and contested? Drawing on a long-term narrative study of global visitors to the Museum of New Zealand Te Papa Tongarew...

Contact Zones: Natural Labs for Studying Evolutionary Transitions

Contrasts between related diploid and polyploid taxa can serve as windows into the evolution of sexual systems. A recent study of a moving diploid-polyploid contact zone explores this topic in novel ways.

Toward a theory of contact, substrates, and superimposition zones*