5 Works

Data from: Attracting mutualists and antagonists: plant trait variation explains the distribution of specialist floral herbivores and pollinators on crops and wild gourds

N. Theis, N. A. Barber, S. D. Gillespie, R. V. Hazzard & L. S. Adler
PREMISE OF THE STUDY: Floral traits play important roles in pollinator attraction and defense against floral herbivory. However, plants may experience trade-offs between conspicuousness to pollinators and herbivore attraction. Comparative studies provide an excellent framework to examine the role of multiple traits shaping mutualist and antagonist interactions. METHODS: To assess whether putative defensive and attractive traits predict species interactions, we grew 20 different Cucurbitaceae species and varieties in the field to measure interactions with pollinators...

Data from: Island-wide aridity did not trigger recent megafaunal extinctions in Madagascar

Brooke E. Crowley, Laurie R. Godfrey, Richard J. Bankoff, George H. Perry, Brendan J. Culleton, Douglas J. Kennett, Michael R. Sutherland, Karen E. Samonds & David A. Burney
Researchers are divided about the relative importance of people versus climate in triggering the Late Holocene extinctions of the endemic large-bodied fauna on the island of Madagascar. Specifically, a dramatic and synchronous decline in arboreal pollen and increase in grass pollen ca. 1,000 years ago has been alternatively interpreted as evidence for aridification, increased human activity, or both. As aridification and anthropogenic deforestation can have similar effects on vegetation, resolving which of these factors (if...

Data from: Microsatellite and major histocompatibility complex variation in an endangered rattlesnake, the Eastern Massasauga (Sistrurus catenatus)

Collin P. Jaeger, Melvin R. Duvall, Bradley J. Swanson, Christopher A. Phillips, Michael J. Dreslik, Sarah J. Baker & Richard B. King
Genetic diversity is fundamental to maintaining the long-term viability of populations, yet reduced genetic variation is often associated with small, isolated populations. To examine the relationship between demography and genetic variation, variation at hypervariable loci (e.g., microsatellite DNA loci) is often measured. However, these loci are selectively neutral (or near neutral) and may not accurately reflect genomewide variation. Variation at functional trait loci, such as the major histocompatibility complex (MHC), can provide a better assessment...

Data from: Novel opsin gene variation in large-bodied, diurnal lemurs

Rachel L. Jacobs, Tammie S. MacFie, Amanda N. Spriggs, Andrea L. Baden, Toni Lyn Morelli, Mitchell T. Irwin, Richard R. Lawler, Jennifer Pastorini, Mireya Mayor, Runhua Lei, Ryan Culligan, Melissa T. R. Hawkins, Peter M. Kappeler, Patricia C. Wright, Edward E. Louis, Nicholas I. Mundy & Brenda J. Bradley
Some primate populations include both trichromatic and dichromatic (red–green colour blind) individuals due to allelic variation at the X-linked opsin locus. This polymorphic trichromacy is well described in day-active New World monkeys. Less is known about colour vision in Malagasy lemurs, but, unlike New World monkeys, only some day-active lemurs are polymorphic, while others are dichromatic. The evolutionary pressures underlying these differences in lemurs are unknown, but aspects of species ecology, including variation in activity...

Data from: Phylogenetic diversity is maintained despite richness losses over time in restored tallgrass prairie plant communities

Nicholas A. Barber, Holly P. Jones, Melvin R. Duvall, William P. Wysocki, Michael J. Hansen & David J. Gibson
Ecosystem restoration is an important tool for mitigating biodiversity loss and recovering critical ecosystem services to humanity, but restoration rarely takes into account the evolutionary attributes of the community being restored. Phylogenetic diversity (PD) represents a potentially valuable measure of restoration success because it can correlate with functional trait diversity that drives ecosystem function. However, PD patterns in restored communities are rarely assessed. We surveyed plant communities in restored tallgrass prairies 2–19 years old and...

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