4 Works

Data for: Human food use increases plant geographic ranges in the Sonoran Desert

Benjamin Blonder, Carolyn Flower, Wendy Hodgson, Andrew Salywon, Brian Maitner, Brian Enquist & Matthew Peeples
Aim. Climate is usually regarded as the main determinant of plant species’ distributions. However, past human use of species for food also may have influenced distributions. We hypothesized that human-mediated dispersal has resulted in food plants occupying more of their potential geographic range. We also hypothesized that key ecological traits could predispose a species to occupy more of its potential climatic geographic range and be selected by humans for food. Location. The Sonoran Desert of...

Variation in salinity tolerance and water use strategies in an introduced woody halophyte (Tamarix spp.)

Randy Long, Carla D'Antonio, Tom Dudley & Kevin Hultine
1. The form and function of terrestrial plants is largely governed by the availability of water, with plants in water limited environments expressing traits minimizing water loss and tissue damage during drought. Areas with high salinity are analogous to those with low water availability, even where water is abundant. We evaluated variation in salinity tolerance and water use strategies in an introduced halophytic shrub, Tamarix spp by measuring gas exchange rates, biomass accumulation, and turgor...

Plastic responses to hot temperatures homogenize riparian leaf litter, speed decomposition, and reduce detritivores

Joann Jeplawy, Hillary Cooper, Jane Marks, Richard Lindroth, Morgan Andrews, Zacchaeus Compson, Catherine Gehring, Kevin Hultine, Kevin Grady, Thomas Whitham, Gerard Allan & Rebecca Best
Efforts to maintain the function of critical ecosystems under climate change often begin with foundation species. In the southwestern US, cottonwood trees support diverse communities in riparian ecosystems that are threatened by rising temperatures. Genetic variation within cottonwoods shapes communities and ecosystems, but these effects may be modified by phenotypic plasticity, where genotype traits change in response to environmental conditions. Here, we investigated plasticity in Fremont cottonwood (Populus fremontii) leaf litter traits as well as...

Spenders versus savers: climate-induced carbon allocation tradeoffs in a recently introduced woody plant

Randall Long, Tom Dudley, Carla D'Antonio, Kevin Grady, Susan Bush & Kevin Hultine
Non-structural carbohydrate(NSC) storage may be under strong selection in woody plant species that occur across strong environmental gradients. We therefore investigated carbon allocation strategies in a widely distributed, introduced woody plant. We predicted genotypes from cold climates with exposure to episodic freeze events, would have elevated NSC concentrations with the tradeoff of reduced growth and reproduction relative to warm-adapted genotypes. We established an experimental common garden using genotypes of Tamarix spp., sourced across a large...

Registration Year

  • 2021

Resource Types

  • Dataset


  • Desert Botanical Garden
  • Northern Arizona University
  • University of California, Santa Barbara
  • University of North Texas
  • University of California, Berkeley
  • University of Wisconsin-Madison
  • Arizona State University
  • University of Arizona