31 Works

Data from: Necrobiome framework for bridging decomposition ecology of autotrophically and heterotrophically derived organic matter

Mark Eric Benbow, Philip S. Barton, Michael D. Ulyshen, James C. Beasley, Travis L. DeVault, Michael S. Strickland, Jeffery K. Tomberlin, Heather R. Jordan & Jennifer L. Pechal
Decomposition contributes to global ecosystem function by contributing to nutrient recycling, energy flow and limiting biomass accumulation. The decomposer organisms influencing this process form diverse, complex, and highly dynamic communities that often specialize on different plant or animal resources. Despite performing the same net role, there is a need to conceptually synthesize information on the structure and function of decomposer communities across the spectrum of dead plant and animal resources. A lack of synthesis has...

Data from: Natural selection interacts with recombination to shape the evolution of hybrid genomes

Molly Schumer, Chenling Xu, Daniel L Powell, Arun Durvasula, Laurits Skov, Chris Holland, John C Blazier, Sriram Sankararaman, Peter Andolfatto, Gil G Rosenthal & Molly Przeworski
To investigate the consequences of hybridization between species, we studied three replicate hybrid populations that formed naturally between two swordtail fish species, estimating their fine-scale genetic map and inferring ancestry along the genomes of 690 individuals. In all three populations, ancestry from the “minor” parental species is more common in regions of high recombination and where there is linkage to fewer putative targets of selection. The same patterns are apparent in a reanalysis of human...

Data from: Surveying the spatial distribution of feral sorghum (Sorghum bicolor L.) and its sympatry with johnsongrass (S. halepense) in South Texas

Sara Ohadi, Matthew Littlejohn, Mohsen Mesgaran, William Rooney, Muthu Bagavathiannan & Muthukumar Bagavathiannan
Sorghum (Sorghum bicolor) is an important grain and forage crop grown across the US. In some areas, sorghum can become feral along roadsides and other ruderal areas, as a result of seed spill during harvest or transport. In some of these situations, feral sorghum grows in or near established johnsongrass (S. halepense) populations. Johnsongrass, a wild relative of sorghum and an incredibly noxious weed, is capable of hybridizing with cultivated sorghum. Because commercial hybrid sorghum...

Data from: Production of omega-3 enriched tilapia through the dietary use of algae meal or fish oil: Improved nutrient value of fillet and offal

Tyler R. Stoneham, David D. Kuhn, Daniel P. Taylor, Andrew P. Neilson, Stephen A. Smith, Delbert M. Gatlin, Hyun Sik S. Chu, Sean F. O'Keefe & Sean F. O’Keefe
The goal of this project was to increase the nutrient value of fillets, by-product muscle, and offal of aquacultured tilapia. A diet that includes seafood with a high omega-3 (n-3) fatty acid content, more specifically eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), are known to have numerous health benefits for consumers. Improved nutrient value of the offal may also attract new market opportunities for the aquaculture industry. Tilapia were cultured on different experimental feeds that...

Data from: Correlates of habitat fragmentation and northern bobwhite abundance in the Gulf Prairie Landscape Conservation Cooperative

Katherine S. Miller, Leonard A. Brennan, Humberto Perotto-Baldivieso, Fidel Hernandez, Eric Grahmann, Atiye Z. Okay, X. Ben Wu, Markus Peterson, Heather Hannusch, Jose Mata, Jaclyn Robles & Taylor Shedd
The northern bobwhite Colinus virginianus has experienced range-wide declines over the last several decades, primarily due to habitat loss and habitat fragmentation. As northern bobwhite populations continue to decline, there is a need for studies that address the impact of habitat changes on population persistence at multiple spatial scales. Our goal was to assess changes in habitat and land use related to northern bobwhite declines across multiple spatial scales in Texas, Oklahoma, and Louisiana. We...

Data from: Environmental filtering improves ecological niche models across multiple scales

Adrian A. Castellanos, Jerry W. Huntley, Gary Voelker & A. Michelle Lawing
1. A clear challenge for ecological niche modeling is determining how to best mitigate the effects of sampling bias from commonly collected biodiversity data. Recent approaches have focused on filtering occurrences in overrepresented regions based on geographic or environmental proximity. 2. We tested the efficacy of filtering in geographic and environmental space using occurrence data from four species. Our evaluation strategies examined 14 distance measures in geographic and environmental spaces and eight combinations of environmental...

Data from: Larval pheromones act as colony-wide regulators of collective foraging behavior in honeybees

Rong Ma, Gabriel Villar, Christina M. Grozinger & Juliana Rangel
When animals move or forage in groups, collective behaviors arise from independent decisions that individuals make based on limited information about the environment. In decentralized systems in which individuals use local cues to decide how to allocate their time amongst multiple tasks, a “global” signal detectable over large distances by all members of the group could have a profound effect on task allocation and coordination. Honey bees provide a unique opportunity to study how information...

Data from: Genetic data reveal mixed-stock aggregations of gray whales in the North Pacific Ocean

Anna Brüniche-Olsen, R. Jorge Urban, Vladimir V. Vertyankin, Celine A.J. Godard-Codding, John W. Bickham & J. Andrew DeWoody
Gray whales (Eschrichtius robustus) in the Western Pacific are critically endangered whereas in the Eastern Pacific they are relatively common. Holocene environmental changes and commercial whaling reduced their numbers, but gray whales in the Eastern Pacific now outnumber their Western counterparts by more than 100-fold. Herein, we investigate the genetic diversity and population structure within the species using a panel of genic SNPs. Results indicate the gray whale gene pool is differentiated into two substocks...

Data from: Bison body size and climate change

Jeff M. Martin, Jim I. Mead & Perry S. Barboza
The relationship between body size and temperature of mammals is poorly resolved, especially for large keystone species such as bison (Bison bison). Bison are well-represented in the fossil record across North America, which provides an opportunity to relate body size to climate within a species. We measured the length of a leg bone (calcaneal tuber, DstL) in 849 specimens from 60 localities that were dated by stratigraphy and 14C decay. We estimated body mass (M)...

Data from: Resisting annihilation: relationships between functional trait dissimilarity, assemblage competitive power and allelopathy

Rika M. W. Muhl, Daniel L. Roelke, Tamar Zohary, Maria Moustaka-Gouni, Ulrich Sommer, Gabor Borics, Ursula Gaedke, Frances G. Withrow & Joydeb Bhattacharyya
Allelopathic species can alter biodiversity. Using simulated assemblages that are characterised by neutrality, lumpy coexistence and intransitivity, we explore relationships between within-assemblage competitive dissimilarities and resistance to allelopathic species. An emergent behaviour from our models is that assemblages are more resistant to allelopathy when members strongly compete exploitatively (high competitive power). We found that neutral assemblages were the most vulnerable to allelopathic species, followed by lumpy and then by intransitive assemblages. We find support for...

Data from: Spatial phylogenetics reveals evolutionary constraints on the assembly of a large regional flora

Daniel Spalink, Ricardo Kriebel, Pan Li, Matthew C. Pace, Bryan T. Drew, John G. Zaborsky, Jeffrey R. Rose, Chloe P. Drummond, Mary Ann Feist, William S. Alverson, Donald M. Waller, Kenneth M. Cameron, Thomas J. Givnish & Kenneth J. Sytsma
Premise of the study: We use spatial phylogenetics to analyze the assembly of the Wisconsin flora, linking processes of dispersal and niche evolution to spatial patterns in floristic and phylogenetic diversity, and testing whether phylogenetic niche conservatism can account for these patterns. Methods: We use digitized records and a new molecular phylogeny for all vascular plants in Wisconsin to estimate spatial variation in species richness and phylogenetic  and  diversity in a native flora...

Data from: Loss of genetic diversity, recovery, and allele surfing in a colonizing parasite, Geomydoecus aurei

James W. Demastes, David J. Hafner, Mark S. Hafner, Jessica E. Light & Theresa A. Spradling
Understanding the genetic consequences of changes in species distributions has wide-ranging implications for predicting future outcomes of climate change, for protecting threatened or endangered populations, and for understanding the history that has led to current genetic patterns within species. Herein, we examine the genetic consequences of range expansion over a 25-year period in a parasite (Geomydoecus aurei) that is in the process of expanding its geographic range via invasion of a novel host. By sampling...

Data from: Crop pests and predators exhibit inconsistent responses to surrounding landscape composition

Daniel S. Karp, Rebecca Chaplin-Kramer, Timothy D. Meehan, Emily A. Martin, Fabrice DeClerck, Heather Grab, Claudio Gratton, Lauren Hunt, Ashley E. Larsen, Alejandra Martínez-Salinas, Megan E. O’Rourke, Adrien Rusch, Katja Poveda, Mattias Jonsson, Jay A. Rosenheim, Nancy A. Schellhorn, Teja Tscharntke, Stephen D. Wratten, Wei Zhang, Aaron L. Iverson, Lynn S. Adler, Matthias Albrecht, Audrey Alignier, Gina M. Angelella, Muhammad Zubair Anjum … & Yi Zou
The idea that noncrop habitat enhances pest control and represents a win–win opportunity to conserve biodiversity and bolster yields has emerged as an agroecological paradigm. However, while noncrop habitat in landscapes surrounding farms sometimes benefits pest predators, natural enemy responses remain heterogeneous across studies and effects on pests are inconclusive. The observed heterogeneity in species responses to noncrop habitat may be biological in origin or could result from variation in how habitat and biocontrol are...

Data from: Comparative phylogeography biogeography of forest-dependent mammals reveals paleo-forest corridors throughout Sundaland

Victor C. Mason, Kristofer M. Helgen & William J. Murphy
The evolutionary history of the colugo, a gliding arboreal mammal distributed throughout Sundaland, was influenced by the location of and connections between forest habitats. By comparing colugo phylogenetic patterns, species ecology, sample distributions, and times of divergence to those of other Sundaic taxa with different life history traits and dispersal capabilities, we inferred the probable distribution of paleo-forest corridors. We identified a consistent pattern of early diversification between east and west Bornean lineages in colugos,...

Data from: Effects of carbon-based nanomaterials on seed germination, biomass accumulation and salt stress response of bioenergy crops

Kamal Pandey, Mohamed H. Lahiani, Victoria K. Hicks, Keith Hudson, Micah J. Green, Mariya Khodakovskaya & M. Keith Hudson
Bioenergy crops are an attractive option for use in energy production. A good plant candidate for bioenergy applications should produce a high amount of biomass and resist harsh environmental conditions. Carbon-based nanomaterials (CBNs) have been described as promising seed germination and plant growth regulators. In this paper, we tested the impact of two CBNs: graphene and multi-walled carbon nanotubes (CNTs) on germination and biomass production of two major bioenergy crops (sorghum and switchgrass). The application...

Data from: Fitness decline under osmotic stress in Caenorhabditis elegans populations subjected to spontaneous mutation accumulation at varying population sizes

Vaishali Katju, Lucille Boreal Packard & Peter David Keightley
The consequences of mutations for population fitness depends on their individual selection coefficients and the effective population size. An earlier study of Caenorhabditis elegans spontaneous mutation accumulation lines evolved for 409 generations at three population sizes found that Ne = 1 populations declined significantly in fitness whereas the fitness of larger populations (Ne = 5, 50) was indistinguishable from the ancestral control under benign conditions. To test if larger MA populations harbor a load of...

Data from: A map-based approach to assessing genetic diversity, structure, and connectivity in the seagrass Halodule wrightii

Patrick D. Larkin, Tabitha J. Maloney, Sebastian Rubiano-Rincon, Michael M. Barrett, PD Larkin, TJ Maloney & MM Barrett
Seagrass cover has declined in many areas of the world in a trend that has accelerated over the past several decades. This raises concern for both the impact the decline in cover has on coastal ecosystems and the effect it may have on seagrass evolutionary potential, as genotypic and genomic variation is lost. We used 8 microsatellite loci to investigate genetic diversity, structure, and connectivity in the seagrass Halodule wrightii from the Gulf of Mexico...

Data from: Host cues mediate growth and establishment of oak mistletoe (Phoradendron leucarpum, Viscaceae), an aerial parasitic plant.

Christopher P. Randle, Brandi C. Cannon, Amber L. Faust, Angela K. Hawkins, Sarah E. Cabrera, Stephen Lee, Amy A. Perez, Michelle L. Lewis, James Sopas, Timothy J. Verastegui, Justin K. Williams & Sara E. Cabrera
The oak mistletoe (Phoradendron leucarpum, Viscaceae) is well-documented to exhibit preference for a few potential host species in a given locality, even when many potential host species are present. In trying to explain this distribution, we examined the mechanisms by which mistletoe seedlings recognize potentially suitable hosts in the Piney Woods ecoregion of east Texas. An initial survey of patterns of infection on the campus of Sam Houston State University revealed that water oak (Quercus...

Data from: Quantitative trait loci for cold tolerance in chickpea

Clarice J. Coyne, Deus Mugabe, Julia Piaskowski, Ping Zheng, Yu Ma, Erik Landry, Rebecca McGee, Dorrie Main, George Vandemark, Hongbin Zhang & Shahal Abbo
Fall-sown chickpea (Cicer arietinum L.) yields are often double those of spring-sown chickpea in regions with Mediterranean climates that have mild winters. However, winter kill can limit the productivity of fall-sown chickpea. Developing cold-tolerant chickpea would allow the expansion of the current geographic range where chickpea is grown and also improve productivity. The objective of this study was to identify the quantitative trait loci (QTL) associated with cold tolerance in chickpea. An interspecific recombinant inbred...

Data from: Olfaction written in bone: cribriform plate size parallels olfactory receptor gene repertoires in Mammalia

Deborah J. Bird, William J. Murphy, Lester Fox-Rosales, Iman Hamid, Robert A. Eagle & Blaire Van Valkenburgh
The evolution of mammalian olfaction is manifested in a remarkable diversity of gene repertoires, neuroanatomy, and skull morphology across living species. Olfactory receptor genes (ORG), which initiate the conversion of odorant molecules into odor perceptions and help an animal resolve the olfactory world, range in number from a mere handful to several thousand genes across species. Within the snout, each of these ORGs is exclusively expressed by a discrete population of olfactory sensory neurons (OSN),...

Data from: Reproductive effort and success of males in scramble competition polygyny: evidence for trade-offs between foraging and mate-search

Aaron M. Foley, David G. Hewitt, Randy W. DeYoung, Matthew J Schnupp, Mickey W Hellickson & Mitch A. Lockwood
1. Patterns of male reproductive allocation provide insight into life-history characteristics. The trade-offs associated with resource and female group defense are well-defined. However, less is understood about trade-offs in species that practice scramble-competition polygyny, where successful strategies may favor competitive mate-searching rather than contest competition and fighting. 2. White-tailed deer (Odocoileus virginianus) practice scramble-competition polygyny where solitary males search for and assess receptivity of females scattered across the landscape. Physically mature males are expected to...

Data from: Synchronous diversification of Sulawesi's iconic artiodactyls driven by recent geological events

Laurent A. F. Frantz, Anna Rudzinski, Abang Mansyursyah Surya Nugraha, Allowen Evin, James Burton, Ardern Hulme-Beaman, Anna Linderholm, Ross Barnett, Rodrigo Vega, Evan K. Irving-Pease, James Haile, Richard Allen, Kristin Leus, Jill Shephard, Mia Hillyer, Sarah Gillemot, Jeroen Van Den Hurk, Sharron Ogle, Cristina Atofanei, Mark G. Thomas, Friederike Johansson, Abdul Haris Mustari, John Williams, Kusdiantoro Mohamad, Chandramaya Siska Damayanti … & Greger Larson
The high degree of endemism on Sulawesi has previously been suggested to have vicariant origins, dating back 40 Myr ago. Recent studies, however, suggest that much of Sulawesi’s fauna assembled over the last 15 Myr. Here, we test the hypothesis that more recent uplift of previously submerged portions of land on Sulawesi promoted diversification, and that much of its faunal assemblage is much younger than the island itself. To do so, we combined palaeogeographical reconstructions...

Data from: Substantial differences in bias between single-digest and double-digest RAD-seq libraries: a case study

Sarah P. Flanagan & Adam G. Jones
The trade‐offs of using single‐digest vs. double‐digest restriction site‐associated DNA sequencing (RAD‐seq) protocols have been widely discussed. However, no direct empirical comparisons of the two methods have been conducted. Here, we sampled a single population of Gulf pipefish (Syngnathus scovelli) and genotyped 444 individuals using RAD‐seq. Sixty individuals were subjected to single‐digest RAD‐seq (sdRAD‐seq), and the remaining 384 individuals were genotyped using a double‐digest RAD‐seq (ddRAD‐seq) protocol. We analysed the resulting Illumina sequencing data and...

Data from: Approaches to integrating genetic data into ecological networks

Elizabeth L. Clare, Aron J. Fazekas, Natalia V. Ivanova, Robin M. Floyd, Paul D.N. Hebert, Amanda M. Adams, Juliet Nagel, Rebecca Girton, Steven G. Newmaster, M. Brock Fenton & Paul D. N. Hebert
As molecular tools for assessing trophic interactions become common, research is increasingly focused on the construction of interaction networks. Here we demonstrate three key methods for incorporating DNA data into network ecology and discuss analytical considerations using a model consisting of plants, insects, bats and their parasites from the Costa Rican dry forest. The simplest method involves the use of Sanger sequencing to acquire long sequences to validate or refine field identifications, for example of...

Data from: The challenges that spatial context present for synthesizing community ecology across scales

Christopher J. Patrick & Lester L. Yuan
Accurately characterizing spatial patterns on landscapes is necessary to understand the processes that generate biodiversity, a problem that has applications in ecological theory, conservation planning, ecosystem restoration, and ecosystem management. However, the measurement of biodiversity patterns and the ecological and evolutionary processes that underlie those patterns is highly dependent on the study unit size, boundary placement, and number of observations. These issues, together known as the modifiable areal unit problem, are well known in geography....

Registration Year

  • 2018
    31

Resource Types

  • Dataset
    31

Affiliations

  • Texas A&M University
    31
  • University of Adelaide
    3
  • University of Idaho
    3
  • University of Massachusetts Amherst
    2
  • Columbia University
    2
  • University of California, Berkeley
    2
  • United States Department of Agriculture
    2
  • University of Edinburgh
    2
  • University of Wisconsin-Madison
    2
  • Queen Mary University of London
    2