64 Works

Data from: A test of the effects of timing of a pulsed resource subsidy on stream ecosystems

Takuya Sato, Rana El-Sabaawi, Kirsten Campbell, Tamihisa Ohta, John S. Richardson & Rana W. El-Sabaawi
Spatial resource subsidies can alter bottom-up and top-down forces of community regulation across ecosystem boundaries. Most subsidies are temporally variable, and recent theory has suggested that consumer-resource dynamics can be stabilized if the peak timing of a subsidy is desynchronized with that of prey productivity in the recipient ecosystem. However, magnitude of consumer responses per se could depend on the subsidy timing, which may be a critical component for community dynamics and ecosystem processes. The...

Data from: Feather melanin and micro-structure variation in dark-eyed junco (Junco hyemalis) across an elevational gradient in the Selkirk Mountains

Devin R. De Zwaan, Jennifer L. Greenwood & Kathy Martin
Variation in feather melanism and microstructure can arise through sexual selection and ecological functional drivers. Melanin-based plumage traits are associated with sexual dichromatism and the intensity of sexual selection in many avian species, but also have several ecological benefits such as protection against ultra-violet (UV) radiation, camouflage, and feather strength. Additionally, feather microstructure influences thermoregulation. Plumage variation across species is well documented; however, the relative role of sexual selection and ecological drivers in intra-specific and...

Data from: Multiple reproductive barriers separate recently diverged sunflower ecotypes

Katherine L. Ostevik, Rose L. Andrew, Sarah P. Otto & Loren H. Rieseberg
Measuring reproductive barriers between groups of organisms is an effective way to determine the traits and mechanisms that impede gene flow. However, to understand the ecological and evolutionary factors that drive speciation, it is important to distinguish between the barriers that arise early in the speciation process and those that arise after speciation is largely complete. In this paper we comprehensively test for reproductive isolation between recently diverged (< 10,000 years bp) dune and non-dune...

Data from: Bottom time does not always predict prey encounter rate in Antarctic fur seals

Morgane Viviant, Tiphaine Jeanniard-Du-Dot, Pascal Monestiez, Matthieu Authier, Christophe Guinet & Tiphaine Jeanniard Dudot
Optimal foraging models applied to breath-holding divers predict that diving predators should optimize the time spent foraging at the bottom of dives depending on prey encounter rate, distance to prey patch (depth) and physiological constraints. We tested this hypothesis on a free-ranging diving marine predator, the Antarctic fur seal Arctocephalus gazella, equipped with accelerometers or Hall sensors (n = 11) that recorded mouth-opening events, a proxy for prey capture attempts and thus feeding events. Over...

Data from: Urbanization drives the evolution of parallel clines in plant populations

Ken A. Thompson, Marie Renaudin & Marc T.J. Johnson
Urban ecosystems are an increasingly dominant feature of terrestrial landscapes. While evidence that species can adapt to urban environments is accumulating, the mechanisms through which urbanization imposes natural selection on populations are poorly understood. The identification of adaptive phenotypic changes (i.e. clines) along urbanization gradients would facilitate our understanding of the selective factors driving adaptation in cities. Here, we test for phenotypic clines in urban ecosystems by sampling the frequency of a Mendelian-inherited trait—cyanogenesis—in white...

Data from: An experimental test of the effect of predation upon behaviour and trait correlations in threespine stickleback

Sara E. Miller, Kieran M. Samuk & Diana J. Rennison
Benthic and limnetic threespine stickleback (Gasterosteus aculeatus) are a classic example of ecological speciation. Behavioural and armour divergence between these species has been predicted to be the result of divergent selection driven in part by differential predation from cutthroat trout (Oncorhynchus clarki). To experimentally test this prediction, we reared split families of benthic–limnetic hybrids in the presence or absence of trout predation. Our results show that the presence of trout had little effect upon stickleback...

Data from: Widespread genetic incompatibilities between first-step mutations during parallel adaptation of Saccharomyces cerevisiae to a common environment

Jasmine Ono, Aleeza C. Gerstein & Sarah P. Otto
Independently evolving populations may adapt to similar selection pressures via different genetic changes. The interactions between such changes, such as in a hybrid individual, can inform us about what course adaptation may follow and allow us to determine whether gene flow would be facilitated or hampered following secondary contact. We used Saccharomyces cerevisiae to measure the genetic interactions between first-step mutations that independently evolved in the same biosynthetic pathway following exposure to the fungicide nystatin....

Data from: MycoDB, a global database of plant response to mycorrhizal fungi

V. Bala Chaudhary, Megan A. Rúa, Anita Antoninka, James D. Bever, Jeffery Cannon, Ashley Craig, Jessica Duchicela, Alicia Frame, Monique Gardes, Catherine Gehring, Michelle Ha, Miranda Hart, Jacob Hopkins, Baoming Ji, Nancy Collins Johnson, Wittaya Kaonongbua, Justine Karst, Roger T. Koide, Louis J. Lamit, James Meadow, Brook G. Milligan, John C. Moore, , Bridget Piculell, Blake Ramsby … & Jason D. Hoeksema
Plants form belowground associations with mycorrhizal fungi in one of the most common symbioses on Earth. However, few large-scale generalizations exist for the structure and function of mycorrhizal symbioses, as the nature of this relationship varies from mutualistic to parasitic and is largely context-dependent. We announce the public release of MycoDB, a database of 4,010 studies (from 438 unique publications) to aid in multi-factor meta-analyses elucidating the ecological and evolutionary context in which mycorrhizal fungi...

Data from: Recurrent selection explains parallel evolution of genomic regions of high relative but low absolute differentiation in a ring species

Darren E. Irwin, Miguel Alcaide, Kira E. Delmore, Jessica H. Irwin & Gregory L. Owens
Recent technological developments allow investigation of the repeatability of evolution at the genomic level. Such investigation is particularly powerful when applied to a ring species, in which spatial variation represents changes during the evolution of two species from one. We examined genomic variation among three subspecies of the greenish warbler ring species, using genotypes at 13 013 950 nucleotide sites along a new greenish warbler consensus genome assembly. Genomic regions of low within-group variation are...

Data from: Reduced mycorrhizal responsiveness leads to increased competitive tolerance in an invasive exotic plant

Lauren P. Waller, Ragan M. Callaway, John N. Klironomos, Yvette K. Ortega & John L. Maron
Arbuscular mycorrhizal (AM) fungi can exert a powerful influence on the outcome of plant–plant competition. Since some exotic plants interact differently with soil biota such as AM fungi in their new range, range-based shifts in AM responsiveness could shift competitive interactions between exotic and resident plants, although this remains poorly studied. We explored whether genotypes of the annual exotic Centaurea solstitialis (yellow starthistle), collected from populations across the native and non-native ranges, differed in responsiveness...

Data from: Costs of reproduction explain the correlated evolution of semelparity and egg size: theory and a test with salmon

Douglas C. Braun, Holly K. Kindsvater, Sarah P. Otto & John D. Reynolds
Species’ life history traits, including maturation age, number of reproductive bouts, offspring size and number, reflect adaptations to diverse biotic and abiotic selection pressures. A striking example of divergent life histories is the evolution of either iteroparity (breeding multiple times) or semelparity (breed once and die). We analysed published data on salmonid fishes and found that semelparous species produce larger eggs, that egg size and number increase with salmonid body size among populations and species...

Data from: Variation in parent-offspring kinship in socially monogamous systems with extra-pair reproduction and inbreeding

Jane M. Reid, Greta Bocedi, Pirmin Nietlisbach, Alexander Bradley Duthie, Matthew Ernest Wolak, Elizabeth A. Gow & Peter Arcese
Female extra-pair reproduction in socially monogamous systems is predicted to cause cuckolded socially-paired males to conditionally reduce paternal care, causing selection against extra-pair reproduction and underlying polyandry. However, existing models and empirical studies have not explicitly considered that cuckolded males might be related to their socially-paired female and/or to her extra-pair mate, and therefore be related to extra-pair offspring that they did not sire but could rear. Selection against paternal care, and hence against extra-pair...

Data from: The reciprocal relationship between competition and intraspecific trait variation

Jonathan A. Bennett, Kersti Riibak, Riin Tamme, Rob J. Lewis & Meelis Pärtel
Trait differences among plants are expected to influence the outcome of competition; competition should be strongest between similar species (or individuals) under limiting similarity, and between dissimilar species within competitive hierarchies. These hypotheses are often used to infer competitive dynamics from trait patterns within communities. However, plant traits are frequently plastic in response to competition. This variation is poorly accounted for in trait-based studies of competition and community assembly. To explore the relationship between trait...

Data from: Evolution of haploid–diploid life cycles when haploid and diploid fitnesses are not equal

Michael F. Scott & Marie Rescan
Many organisms spend a significant portion of their life cycle as haploids and as diploids (a haploid–diploid life cycle). However, the evolutionary processes that could maintain this sort of life cycle are unclear. Most previous models of ploidy evolution have assumed that the fitness effects of new mutations are equal in haploids and homozygous diploids, however, this equivalency is not supported by empirical data. With different mutational effects, the overall (intrinsic) fitness of a haploid...

Registration Year

  • 2016
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Resource Types

  • Dataset
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Affiliations

  • University of British Columbia
    64
  • Indiana University Bloomington
    6
  • The University of Texas at Austin
    3
  • French National Centre for Scientific Research
    3
  • University of Vienna
    3
  • University of California System
    2
  • University of Alberta
    2
  • University of Aberdeen
    2
  • University of Minnesota
    2
  • United States Department of Agriculture
    2