Marginal populations are often isolated and under extreme selection pressures resulting in
anomalous genetics. Consequently, ecosystems that are geographically and ecologically …

Phylogeography is a discipline concerned with various relationships between gene
genealogies—phylogenetics—and geography. The word “phylogeography” was coined in …

Background Although polychaetes are one of the dominant taxa in marine communities,
their distributions and taxonomic diversity are poorly understood. Recent studies have …

The tools of molecular genetics have enormous potential for clarifying the nature and age of
species boundaries in marine organisms. Below I summarize the genetic implications of …

Recent glaciation covered the full extent of rocky intertidal habitat along the coasts of New
England and the Canadian Maritimes. To test whether this glaciation in fact caused …

Much evidence suggests that life originated in hydrothermal habitats, and for much of the
time since the origin of cyanobacteria (at least 2· 5 Ga ago) and of eukaryotic algae (at least …

As the most widespread seagrass in temperate waters of the Northern Hemisphere, Zostera
marina provides a unique opportunity to investigate the extent to which the historical legacy …

Up to the 1960s, there was nearly complete consensus that disjunctions and endemism in
the North Atlantic cannot be explained without in situ survival during the glaciations (the" …

The world ocean supports a dynamic system in which living organisms undergo constant
movements. Although some would appear to be sedentary, all are capable of invading new …

Although Acropora is the most species‐rich genus of the scleractinian (stony) corals, only
three species occur in the Caribbean: A. cervicornis, A. palmata and A. prolifera. Based on …