Peter J. Lockhart

Species delimitation and phylogeny of a New Zealand plant species radiation (2009)

Meudt, Heidi M, Lockhart, Peter J, Bryant, David

Abstract Background Delimiting species boundaries and reconstructing the evolutionary relationships of late Tertiary and Quaternary species radiations is difficult. One recent approach emphasizes the...

Using supernetworks to distinguish hybridization from lineage-sorting (2008)

Holland, Barbara R, Benthin, Steffi, Lockhart, Peter J, Moulton, Vincent, Huber, Katharina T

Abstract Background A simple and widely used approach for detecting hybridization in phylogenies is to reconstruct gene trees from independent gene loci, and to look for gene tree incongruence....

The cyanobacterial endosymbiont of the unicellular algae Rhopalodia gibbashows reductive genome evolution (2008)

Kneip, Christoph, Voβ, Christine, Lockhart, Peter J, Maier, Uwe G

Abstract Background Bacteria occur in facultative association and intracellular symbiosis with a diversity of eukaryotic hosts. Recently, we have helped to characterise an intracellular nitrogen...

The cyanobacterial endosymbiont of the unicellular algae Rhopalodia gibba shows reductive genome evolution (2008)

Kneip, Christoph, Voss, Christine, Lockhart, Peter J., Maier, Uwe G.

Background Bacteria occur in facultative association and intracellular symbiosis with a diversity of eukaryotic hosts. Recently, we have helped to characterise an intracellular nitrogen fixing...

Difficulties in Testing for Covarion-Like Properties of Sequences under the Confounding Influence of Changing Proportions of Variable Sites (2008)

Gruenheit, Nicole, Lockhart, Peter J., Steel, Mike, Martin, William

The covarion (COV)-like properties of sequences are poorly described and their impact on phylogenetic analyses poorly understood. We demonstrate using simulations that, under an evolutionary model...

Syst. Biol. 49(2):225–232, 2000 Invariable Sites Models and Their Use in Phylogeny Reconstruction (2007)

Mike Steel, Daniel Huson, Peter J. Lockhart

Abstract.—Phylogenetic inference is well known to be problematic if both long and short branches occur together in the underlying tree. With biological data, correcting for this problem may require...

Relaxed Molecular Clock Provides Evidence for Long-Distance Dispersal of Nothofagus (Southern Beech) (2005)

Michael Knapp, Karen Stöckler, David Havell, Frédéric Delsuc, Federico Sebastiani, Peter J. Lockhart

A phylogenetic analysis of Nothofagus species provides evidence for their transoceanic dispersal during the Tertiary, and helps resolve the debate about the origins of plant biodiversity in the...

Relaxed Molecular Clock Provides Evidence for Long-Distance Dispersal of Nothofagus (Southern Beech) (2005)

Michael Knapp, Karen Stöckler, David Havell, Frédéric Delsuc, Federico Sebastiani, Peter J. Lockhart

Nothofagus (southern beech), with an 80-million-year-old fossil record, has become iconic as a plant genus whose ancient Gondwanan relationships reach back into the Cretaceous era. Closely associated...

Relaxed molecular clock provides evidence for long-distance dispersal of Nothofagus (southern beech). (2005)

Knapp, Michael, Stöckler, Karen, Havell, David, Delsuc, Frédéric, Sebastiani, Federico, Lockhart, Peter J

Nothofagus (southern beech), with an 80-million-year-old fossil record, has become iconic as a plant genus whose ancient Gondwanan relationships reach back into the Cretaceous era. Closely associated...

Relaxed molecular clock provides evidence for long-distance dispersal of Nothofagus (southern beech). (2005)

Knapp, Michael, Stöckler, Karen, Havell, David, Delsuc, Frédéric, Sebastiani, Federico, Lockhart, Peter J

Nothofagus (southern beech), with an 80-million-year-old fossil record, has become iconic as a plant genus whose ancient Gondwanan relationships reach back into the Cretaceous era. Closely associated...

Biogeographic Interpretation of Splits Graphs: Least Squares Optimization of Branch Lengths (2005)

Winkworth, Richard C., Bryant, David, Lockhart, Peter J., Havell, David, Moulton, Vincent

Although most often used to represent phylogenetic uncertainty, network methods are also potentially useful for describing the phylogenetic complexity expected to characterize recent species...

1 (2004)

Christian Esser, Nahal Ahmadinejad, Christian Wieg, Carmen Rotte, Federico Sebastiani, Gabriel Gelius-dietrich, ...

A genome phylogeny for mitochondria among α-proteobacteria and a predominantly eubacterial ancestry of yeast nuclear genes

Using Consensus Networks to Visualize Contradictory Evidence for Species Phylogeny (2004)

Holland, Barbara R., Huber, Katharina T., Moulton, Vincent, Lockhart, Peter J.

Building species phylogenies from genome data requires the evaluation of phylogenetic evidence from independent gene loci. We propose an approach to do this using consensus networks. We compare gene...

A Genome Phylogeny for Mitochondria Among {alpha}-Proteobacteria and a Predominantly Eubacterial Ancestry of Yeast Nuclear Genes (2004)

Esser, Christian, Ahmadinejad, Nahal, Wiegand, Christian, Rotte, Carmen, Sebastiani, Federico, Gelius-Dietrich, Gabriel, ...

Analyses of 55 individual and 31 concatenated protein data sets encoded in Reclinomonas americana and Marchantia polymorpha mitochondrial genomes revealed that current methods for constructing...

A Genome Phylogeny for Mitochondria Among {alpha}-Proteobacteria and a Predominantly Eubacterial Ancestry of Yeast Nuclear Genes (2004)

Esser, Christian, Ahmadinejad, Nahal, Wiegand, Christian, Rotte, Carmen, Sebastiani, Federico, Gelius-Dietrich, Gabriel, ...

Analyses of 55 individual and 31 concatenated protein data sets encoded in Reclinomonas americana and Marchantia polymorpha mitochondrial genomes revealed that current methods for constructing...

Using Consensus Networks to Visualize Contradictory Evidence for Species Phylogeny (2004)

Holland, Barbara R., Huber, Katharina T., Moulton, Vincent, Lockhart, Peter J.

Building species phylogenies from genome data requires the evaluation of phylogenetic evidence from independent gene loci. We propose an approach to do this using consensus networks. We compare gene...

Using Consensus Networks to Visualize Contradictory Evidence for Species Phylogeny (2004)

Holland, Barbara R., Huber, Katharina T., Moulton, Vincent, Lockhart, Peter J.

Building species phylogenies from genome data requires the evaluation of phylogenetic evidence from independent gene loci. We propose an approach to do this using consensus networks. We compare gene...

A Genome Phylogeny for Mitochondria Among {alpha}-Proteobacteria and a Predominantly Eubacterial Ancestry of Yeast Nuclear Genes (2004)

Esser, Christian, Ahmadinejad, Nahal, Wiegand, Christian, Rotte, Carmen, Sebastiani, Federico, Gelius-Dietrich, Gabriel, ...

Analyses of 55 individual and 31 concatenated protein data sets encoded in Reclinomonas americana and Marchantia polymorpha mitochondrial genomes revealed that current methods for constructing...

Invariable Sites Models and Their Use in Phylogeny Reconstruction (2000)

Steel, Mike, Huson, Daniel, Lockhart, Peter J.

Phylogenetic inference is well known to be problematic if both long and short branches occur together in the underlying tree. With biological data, correcting for this problem may require...

Testing the phylogeny of swordtail fishes using split decomposition and spectral analysis (1995)

Lockhart, Peter J., Penny, David, Meyer, Axel

We examine ways of testing for the reliability of inference from biological sequence data using sequences from Xiphophorus fishes and newly implemented methodology for sequence analysis. The approach...

OO28-825X/93/3103-0275 $2.50/0 © The Royal Society of New Zealand 1993 Some recent progress with methods for evolutionary trees DAVID PENNY* (1993)

Elizabeth E. Watson, Robert E. Hickson, Peter J. Lockhart

*To whom all correspondence should be addressed. Abstract Sequences of macromolecules have "signals " or patterns that arise from a number of sources, particularly from shared...

Relaxed Molecular Clock Provides Evidence for Long-Distance Dispersal of Nothofagus (Southern Beech)

Knapp, Michael, Stöckler, Karen, Havell, David, Delsuc, Frédéric, Sebastiani, Federico, Lockhart, Peter J

Nothofagus (southern beech), with an 80-million-year-old fossil record, has become iconic as a plant genus whose ancient Gondwanan relationships reach back into the Cretaceous era. Closely associated...

Relaxed Molecular Clock Provides Evidence for Long-Distance Dispersal of Nothofagus (Southern Beech)

Knapp, Michael, Stöckler, Karen, Havell, David, Delsuc, Frédéric, Sebastiani, Federico, Lockhart, Peter J

Nothofagus (southern beech), with an 80-million-year-old fossil record, has become iconic as a plant genus whose ancient Gondwanan relationships reach back into the Cretaceous era. Closely associated...