4 Works

Island biogeography predicts skull gigantism and shape variation in meadow voles (Microtus pennsylvanicus) through ecological release and allometry

Mariah Schlis-Elias & Jason Malaney
Island Rule describes the graded trend of gigantism in small-bodied species to dwarfism in large-bodied species inhabiting islands, but causal explanations remain unresolved. We used geometric morphometrics to quantify cranial morphology of 544 meadow vole (Microtus pennsylvanicus) samples across 11 island and 3 mainland populations from the Outer Lands of New England (Atlantic) and the Alexander Archipelago of Alaska (Pacific). We compared the thermoregulation and endurance (TRE) and ecological release (ER) hypotheses using all-subsets linear...

Data from: Range-wide population genetic analysis of Seaside Sparrows (Ammospiza maritima) supports at least five distinct population segments that do not align with current subspecies descriptions

Amie Settlecowski, Kathryn Davis, Mackenzie Roeder, Carolyn Enloe, Thomas Virzi, Margaret Hunter, Stefan Woltmann & Sabrina Taylor
As an obligate salt marsh species, Seaside Sparrows (Ammospiza maritima) are vulnerable to numerous threats including climate change, coastal erosion, sea level rise, and both natural and anthropogenic disasters. Of the nine recognized subspecies, two are extinct and one is endangered. Previous genetic analyses of mitochondrial DNA (mtDNA) and microsatellite loci showed that current taxonomy does not accurately reflect underlying genetic diversity, with possible consequences for the distribution of conservation resources. To further inform Seaside...

Natural history and community science records confirm rapid geographic shifts in the distribution of Bachman’s Sparrow (Peucaea aestivalis) since 1850

Amie Settlecowski, Kathryn Davis, James Cox, Stefan Woltmann & Sabrina Taylor
North American grassland birds colonized emerging habitat created by expanding agriculture in a pattern of eastward expansions from the mid-1800s to mid-1900s. These birds have been declining, since at least the mid1900s, largely as result of anthropogenic landscape change. Only one bird that now breeds predominantly in southeastern pine savannas is thought to have experienced a concurrent range expansion into this region: Peucaea aestivalis (Bachman’s Sparrow). However, our understanding of the P. aestivalis expansion, and...

Eco-evolutionary causes and consequences of rarity in plants: a meta-analysis

Jennifer Boyd, Jill Anderson, Carol Baskauf, Jessica Brzyski & Jennifer Cruse-Sanders
Species differ dramatically in their prevalence in the natural world, with many species characterized as rare due to restricted geographic distribution, low local abundance, and/or habitat specialization. We investigated eco-evolutionary causes and consequences of rarity with phylogenetically-controlled meta-analyses of population genetic diversity, fitness, and functional traits in rare and common congeneric plant species. Our syntheses included 252 rare species and 267 common congeners reported in 153 peer-reviewed articles published from 1978-2020 and one manuscript in...

Registration Year

  • 2022

Resource Types

  • Dataset


  • Austin Peay State University
  • Louisiana State University
  • University of Tennessee at Chattanooga
  • University of Georgia
  • United States Geological Survey
  • Seton Hill University
  • Florida Fish and Wildlife Conservation Commission
  • Tall Timbers Research Station and Land Conservancy