1. What is macroecology?

    Biology Letters 8(6):904 (2012) PMID 22915630 PMCID PMC3497138

    The symposium 'What is Macroecology?' was held in London on 20 June 2012. The event was the inaugural meeting of the Macroecology Special Interest Group of the British Ecological Society and was attended by nearly 100 scientists from 11 countries. The meeting reviewed the recent development of t...
  2. What is macroecology?

    Biology Letters 8(6):904 (2012) PMID 22915630 PMCID PMC3497138

    The symposium 'What is Macroecology?' was held in London on 20 June 2012. The event was the inaugural meeting of the Macroecology Special Interest Group of the British Ecological Society and was attended by nearly 100 scientists from 11 countries. The meeting reviewed the recent development of t...
  3. Migratory behavior of birds affects their coevolutionary relationship with blood parasites.

    Evolution 66(3):740 (2012) PMID 22380437

    Host traits, such as migratory behavior, could facilitate the dispersal of disease-causing parasites, potentially leading to the transfer of infections both across geographic areas and between host species. There is, however, little quantitative information on whether variation in such host attr...
  4. Migratory behavior of birds affects their coevolutionary relationship with blood parasites.

    Evolution 66(3):740 (2012) PMID 22380437

    Host traits, such as migratory behavior, could facilitate the dispersal of disease-causing parasites, potentially leading to the transfer of infections both across geographic areas and between host species. There is, however, little quantitative information on whether variation in such host attr...
  5. Speciation and extinction drive the appearance of directional range size evolution in phylogenies and the fossil record.

    PLoS Biology 10(2):e1001260 (2012) PMID 22371689 PMCID PMC3283545

    While the geographic range of a species is a fundamental unit of macroecology and a leading predictor of extinction risk, the evolutionary dynamics of species' ranges remain poorly understood. Based on statistical associations between range size and species age, many studies have claimed support...
  6. Speciation and extinction drive the appearance of directional range size evolution in phylogenies and the fossil record.

    PLoS Biology 10(2):e1001260 (2012) PMID 22371689 PMCID PMC3283545

    While the geographic range of a species is a fundamental unit of macroecology and a leading predictor of extinction risk, the evolutionary dynamics of species' ranges remain poorly understood. Based on statistical associations between range size and species age, many studies have claimed support...
  7. Biogeography of avian blood parasites (Leucocytozoon spp.) in two resident hosts across Europe: phylogeographic structuring or the abundance-occupancy relationship?

    Molecular Ecology 20(18):3910 (2011) PMID 21880082

    Relationships between hosts and parasites represent complex co-evolving systems that can vary both temporally and spatially. This variation may result in different phylogeographic outcomes, ranging from highly geographically structured parasite populations comprised of specialist lineages that a...
  8. Biogeography of avian blood parasites (Leucocytozoon spp.) in two resident hosts across Europe: phylogeographic structuring or the abundance-occupancy relationship?

    Molecular Ecology 20(18):3910 (2011) PMID 21880082

    Relationships between hosts and parasites represent complex co-evolving systems that can vary both temporally and spatially. This variation may result in different phylogeographic outcomes, ranging from highly geographically structured parasite populations comprised of specialist lineages that a...
  9. The shape and temporal dynamics of phylogenetic trees arising from geographic speciation.

    Systematic Biology 59(6):660 (2010) PMID 20952757

    Phylogenetic trees often depart from the expectations of stochastic models, exhibiting imbalance in diversification among lineages and slowdowns in the rate of lineage accumulation through time. Such departures have led to a widespread perception that ecological differences among species or adap...
  10. The shape and temporal dynamics of phylogenetic trees arising from geographic speciation.

    Systematic Biology 59(6):660 (2010) PMID 20952757

    Phylogenetic trees often depart from the expectations of stochastic models, exhibiting imbalance in diversification among lineages and slowdowns in the rate of lineage accumulation through time. Such departures have led to a widespread perception that ecological differences among species or adap...
  11. The environmental limits to geographic range expansion in birds.

    Ecology Letters 13(6):705 (2010) PMID 20412281

    The environmental factors limiting species' ranges across broad geographic and taxonomic scales are central to questions regarding the geographic variation in biodiversity and impacts of environmental change. However, our understanding remains relatively limited owing to the small-scale, correla...
  12. The environmental limits to geographic range expansion in birds.

    Ecology Letters 13(6):705 (2010) PMID 20412281

    The environmental factors limiting species' ranges across broad geographic and taxonomic scales are central to questions regarding the geographic variation in biodiversity and impacts of environmental change. However, our understanding remains relatively limited owing to the small-scale, correla...
  13. Global biogeography and ecology of body size in birds.

    Ecology Letters 12(3):249 (2009) PMID 19245587

    In 1847, Karl Bergmann proposed that temperature gradients are the key to understanding geographic variation in the body sizes of warm-blooded animals. Yet both the geographic patterns of body-size variation and their underlying mechanisms remain controversial. Here, we conduct the first assembl...
  14. Global biogeography and ecology of body size in birds.

    Ecology Letters 12(3):249 (2009) PMID 19245587

    In 1847, Karl Bergmann proposed that temperature gradients are the key to understanding geographic variation in the body sizes of warm-blooded animals. Yet both the geographic patterns of body-size variation and their underlying mechanisms remain controversial. Here, we conduct the first assembl...
  15. 4000 years of phenotypic change in an island bird: heterogeneity of selection over three microevolutionary timescales.

    Evolution 62(9):2393 (2008) PMID 18540948

    Pronounced phenotypic shifts in island populations are typically attributed to natural selection, but reconstructing heterogeneity in long-term selective regimes remains a challenge. We examined a scenario of divergence proposed for species colonizing a new environment, involving directional sel...
  16. 4000 years of phenotypic change in an island bird: heterogeneity of selection over three microevolutionary timescales.

    Evolution 62(9):2393 (2008) PMID 18540948

    Pronounced phenotypic shifts in island populations are typically attributed to natural selection, but reconstructing heterogeneity in long-term selective regimes remains a challenge. We examined a scenario of divergence proposed for species colonizing a new environment, involving directional sel...
  17. Sympatric speciation in birds is rare: insights from range data and simulations.

    American Naturalist 171(5):646 (2008) PMID 18419572

    Sympatric speciation is now accepted as theoretically plausible and a likely explanation for divergence in a handful of taxa, but its contribution to large-scale patterns of speciation remains contentious. A major problem is that it is difficult to differentiate between alternate scenarios of ge...
  18. Sympatric speciation in birds is rare: insights from range data and simulations.

    American Naturalist 171(5):646 (2008) PMID 18419572

    Sympatric speciation is now accepted as theoretically plausible and a likely explanation for divergence in a handful of taxa, but its contribution to large-scale patterns of speciation remains contentious. A major problem is that it is difficult to differentiate between alternate scenarios of ge...
  19. Pedigree-free animal models: the relatedness matrix reloaded.

    Proceedings of the Royal Society B: Biological ... 275(1635):639 (2008) PMID 18211872 PMCID PMC2596847

    Animal models typically require a known genetic pedigree to estimate quantitative genetic parameters. Here we test whether animal models can alternatively be based on estimates of relatedness derived entirely from molecular marker data. Our case study is the morphology of a wild bird population,...
  20. Pedigree-free animal models: the relatedness matrix reloaded.

    Proceedings of the Royal Society B: Biological ... 275(1635):639 (2008) PMID 18211872 PMCID PMC2596847

    Animal models typically require a known genetic pedigree to estimate quantitative genetic parameters. Here we test whether animal models can alternatively be based on estimates of relatedness derived entirely from molecular marker data. Our case study is the morphology of a wild bird population,...