Data from: Mountain Plover habitat selection and nest survival in relation to weather variability and spatial attributes of Black-tailed Prairie Dog disturbanceCourtney Duchardt, Jeffrey Beck & David Augustine
Habitat loss and altered disturbance regimes have led to declines in many species of grassland and sagebrush birds, including the imperiled Mountain Plover (Charadrius montanus). In certain parts of their range Mountain Plovers rely almost exclusively on Black-Tailed Prairie Dog (Cynomys ludovicianus) colonies as nesting habitat. Previous studies have examined Mountain Plover nest and brood survival on prairie dog colonies, but little is known about how colony size and shape influence these vital rates or...
Genetic dominant male sterility (DMS) has not been widely used as a breeding tool in wheat (Triticum aestivum L.), although DMS-facilitated backcross, mass selection, half-sib selection, and S1 family recurrent selection strategies have been described, and Ms2-facilitated recurrent selection has been used in China. Our objective was to revisit these strategies using the tools of molecular breeding. Development of a mechanism for seedling identification of sterile progeny was a key component of designing practical DMS-facilitated...
1. Recent work suggests that savanna woody plant species separate into two different strategies based on their defences against herbivory; a low nutrient/high chemical defence strategy and a nutrition paired with mostly architectural defences strategy. The concept that chemical and structural defences can augment each other and do not necessarily trade-off has emanated from this work. In this study we examine woody plant defence strategies, how these respond to herbivore removal and how they affect...
Hard yellow liver disease or fatty cirrhosis periodically affects cattle, sheep, goats, pronghorn antelope (Antilocapra americana) and whitetail deer (Odocoileus virginianus texanus) within several Texas counties in the United States. Clinically it presents as chronic liver disease with progressive hepatic necrosis and fibrosis, icterus and liver failure. The damaged livers are yellow and many have multiple firm, often gritty foci that are scattered throughout all lobes. Early investigations included feeding studies using potential toxic plants,...
Data from: Increased soil temperature and decreased precipitation during early life stages constrain grass seedling recruitment in cold desert restorationJeremy J. James, Roger Sheley, Elizabeth Leger, Peter B. Adler, Stuart Hardegree, Elise Gornish & Matt Rinella
1. Seed-based restoration is one of the most difficult challenges for dryland restoration. Identifying environmental conditions that drive variation in seed and seedling mortality across similar restoration efforts could increase understanding of when and where restoration outcomes are likely to be favorable and identify new tools and strategies to improve outcomes. 2. We asked how variation in a suite of environmental predictors influenced germination, emergence, seedling establishment, and juvenile survival of four commonly sown perennial...
The sky islands of southeastern Arizona (AZ) mark a major transition zone between tropical and temperate biota and are considered a neglected biodiversity hotspot. Dispersal ability and host plant specificity are thought to impact the history and diversity of insect populations across the sky islands. We aimed to investigate the population structure and phylogeography of two pine-feeding pierid butterflies, the pine white (Neophasia menapia) and the Mexican pine white (N. terlooii), restricted to these "islands"...
Data from: Genetic diversity and conservation status of Helianthus verticillatus, an endangered sunflower of the Southern United StatesTyler Edwards, Robert Trigiano, Bonnie Ownley, Alan Windham, Christopher Wyman, Phillip Wadl & Denita Hadziabdic
Evaluating species diversity and patterns of population genetic variation is an essential aspect of conservation biology to determine appropriate management strategies and preserve the biodiversity of native plants. Habitat fragmentation and potential habitat loss are often an outcome of a reduction in naturally occurring wildfires and controlled prescribed burning, as seen in Helianthus verticillatus (whorled sunflower). This endangered, wild relative of the common sunflower, Helianthus annuus, is endemic to four locations in Alabama, Georgia, and...
Data from: Colonization history and population differentiation of the Honey Bees (Apis mellifera L.) in Puerto RicoJenny P. Acevedo-Gonzalez, Alberto Galindo-Cardona, Arian Avalos, Charles W. Whitfield, Dania M. Rodriguez, Jose L. Uribe-Rubio & Tugrul Giray
Honey bees (Apis mellifera L.) are the primary commercial pollinators across the world. The subspecies A. m. scutellata originated in Africa and was introduced to the Americas in 1956. For the last 60 years it hybridized successfully with European subspecies, previous residents in the area. The result of this hybridization was called Africanized Honey Bee (AHB). AHB has spread since then, arriving to Puerto Rico (PR) in 1994. The honey bee population on the island...
Data from: Agriculturally dominated landscapes reduce bee phylogenetic diversity and pollination servicesHeather Grab, Michael G. Branstetter, Nolan Amon, Katherine R. Urban-Mead, Mia G. Park, Jason Gibbs, Eleanor J. Blitzer, Katja Poveda, Greg Loeb & Bryan N. Danforth
Land-use change threatens global biodiversity and may reshape the tree of life by favoring some lineages over others. Whether phylogenetic diversity loss compromises ecosystem service delivery remains unknown. We address this knowledge gap using extensive genomic, community, and crop datasets to examine relationships among land use, pollinator phylogenetic structure, and crop production. Pollinator communities in highly agricultural landscapes contain 230 million fewer years of evolutionary history; this loss was strongly associated with reduced crop yield...
Data from: Strong patterns of intraspecific variation and local adaptation in Great Basin plants revealed through a review of 75 years of experimentsOwen W. Baughman, Alison C. Agneray, Matthew L. Forister, Francis F. Kilkenny, Erin K. Espeland, Rob Fiegener, Matthew E. Horning, Richard C. Johnson, Thomas N. Kaye, Jeffery Ott, John Bradley St. Clair & Elizabeth A. Leger
Variation in natural selection across heterogeneous landscapes often produces 1) among-population differences in phenotypic traits, 2) trait-by-environment associations, and 3) higher fitness of local populations. Using a broad literature review of common garden studies published between 1941 and 2017, we documented the commonness of these three signatures in plants native to North America’s Great Basin, an area of extensive restoration and revegetation efforts, and asked which traits and environmental variables were involved. We also asked,...
Data from: Molecular analyses identify hybridization-mediated nuclear evolution in newly discovered fungal hybridsFabiano Sillo, Paolo Gonthier, Blakey Lockman, Takao Kasuga & Matteo Garbelotto
Hybridization may be a major driver in the evolution of plant pathogens. In a high elevation Alpine larch stand in Montana, a novel hybrid fungal pathogen of trees originating from the mating of Heterobasidion irregulare with H. occidentale has been recently discovered. In this study, sequence analyses of one mitochondrial and four nuclear loci from 11 Heterobasidion genotypes collected in the same Alpine larch stand indicated that hybridization has increased allelic diversity by generating novel...
Agricultural Research Service11
United States Department of Agriculture3
University of Nevada Reno2
Utah State University1
University of Wyoming1
Oklahoma State University1
University of Tennessee at Knoxville1
University of Manitoba1
Pacific Northwest Research Station1
University of Florida1