This journal provides immediate access to some articles. Volume 269(1486); January 7, 2002 Relationships fade with time: a meta-analysis of temporal trends in publication in ecology and evolution. PMCID: PMC1690867 Invasion of vacant niches and subsequent sympatric speciation. PMCID: PMC1690861 A rapid fish radiation associated with the last sea-level changes in southern Brazil: the silverside Odontesthes perugiae complex. PMCID: PMC1690865 | ||