19 Works

Experimental habitat fragmentation disrupts host-parasite interaction over decades via life-cycle bottlenecks

Matthew Bitters, Matthew Bitters, Jacqui Meyers, Julian Resasco, Stephen Sarre, Kika Tuff & Kendi Davies
Habitat loss and fragmentation are likely to seriously impact parasites, a less studied but critical component of ecosystems, yet we lack long-term experimental evidence. Parasites structure communities, increase connectivity in food webs, and account for a large proportion of an ecosystem’s total biomass. Food web models predict that parasites with multiple obligate hosts are at greater risk of extinction because the local extinction, or reduction in abundance, of any host will result in a life-cycle...

Beyond single host, single parasite interactions: quantifying competence for complete multi-host, multi-parasite communities

Tara Stewart Merrill, Dana Calhoun & Pieter Johnson
Understanding parasite transmission in communities requires knowledge of each species’ capacity to support transmission. This property, “competence”, is a critical currency for modeling transmission under community change and for testing diversity-disease theory. Despite the central role of competence in disease ecology, we lack a clear understanding of the factors that generate competence and drive its variation. We developed novel conceptual and quantitative approaches to systematically quantify competence for a multi-host, multi-parasite community. We applied our...

Data from: Age-at-injury influences the glial response to traumatic brain injury in the cortex of male juvenile rats

Rachel Rowe, Tabitha Green, Sean Murphy & J. Bryce Ortiz
Glia influence neuronal development and aging. Few translational studies have examined how age at injury affects the glial response to traumatic brain injury (TBI). We hypothesized that rats injured before sexual maturity would exhibit a greater glial response, that persists into early adulthood, compared to rats injured near the onset of sexual maturity. Postnatal day (PND)17 and PND35 rats received midline fluid percussion injury or sham surgery. In three cortical regions (peri-injury, S1BF, perirhinal), we...

Drivers of global variation in land ownership - dataset

Patrick Kavanagh, Michael Gavin, Hannah Haynie, Geoff Kushnick, Bruno Vilela, Ty Tuff, Claire Bowern, Bobbi Low, Carol Ember, Kathryn Kirby & Carlos Botero
Land ownership shapes natural resource management and social–ecological resilience, but the factors determining ownership norms in human societies remain unclear. Here we conduct a global empirical test of long‐standing theories from ecology, economics and anthropology regarding potential drivers of land ownership and territoriality. Prior theory suggests that resource defensibility, subsistence strategies, population pressure, political complexity and cultural transmission mechanisms may all influence land ownership. We applied multi‐model inference procedures based on logistic regression to cultural...

Overlooked costs of coloniality: Mislaid eggs and the double Incubation of separate nests

Amanda Hund
The evolution of colonial breeding remains an outstanding question in evolutionary biology, in part due to our limited understanding of the costs and benefits of group living. We document 85 cases of Barn Swallows Hirundo rustica erythrogaster laying, and subsequently abandoning, eggs in empty, unclaimed nests located adjacent to active nests during a six-year study. The frequency of this behavior was positively correlated with total available nests, a metric that increases with colony size. In...

Tepee Fire Fuel and Fuel Consumption

, Andrew T. Hudak, Joseph C Restaino, Michael Billmire, Nancy H. F. French, Roger D. Ottmar, Bridget Hass, Kyle Zarzana, Tristan Goulden & Rainer Volkamer
Data Overview Mapped attributes: Fuel consumption derived from ALS data Post-fire fuel load derived from ALS data Pre-fire fuel load derived from ALS data Fuel consumption derived from FCCS data Post-fire fuel load derived from FCCS data Pre-fire fuel load derived from FCCS data Supplements: ALS data extent Tepee fire perimeter Prior forest fuel treatments Description Landscape scale estimates of pre-fire fuel load and fuel consumption are valuable resources for land managers and scientists. We...

Black-capped and mountain chickadee range-wide condition

Kathryn Grabenstein, Scott Taylor, Ken Otter & Theresa Burg
Both abiotic and biotic drivers influence species distributions. Abiotic drivers, such as climate, have received considerable attention, even though biotic drivers, such as hybridization, often interact with abiotic drivers. We sought to explore the (1) costs of co-occurrence for ecologically similar species that hybridize and (2) associations between ecological factors and condition to understand how abiotic and biotic factors influence species distributions. For two closely related and ecologically similar songbirds, black-capped and mountain chickadees, we...

Venus Climate Orbiter Akatsuki SPICE Kernel Archive Bundle

Shin-ya Murakami, Yukio Yamamoto, Kevin McGouldrick, George L. Hashimoto & Naru Hirata
This bundle includes the complete set of Venus Climate Orbiter (VCO, also known as PLANET-C and AKATSUKI) SPICE data files, i.e., kernel files, for the cruise, the sun orbiting, and the science phase(s) of the mission. The SPICE data files, which can be accessed using SPICE software, contain geometric and other ancillary information needed to recover the full value of the science instrument data. In particular SPICE kernels provide spacecraft and planetary ephemerides, instrument mounting...

Numerical model simulating the sea ice and ocean conditions in the Amundsen Sea over the period Jan. 1, 2006 to Dec. 31, 2013

Pierre St-Laurent, Eileen E. Hofmann, Robert M. Sherrell, Sharon E. Stammerjohn, Patricia L. Yager, Mathew Biddle & Amber D. York
Numerous coastal polynyas fringe the Antarctic continent and strongly influence the productivity of Antarctic shelf systems. Of the 46 Antarctic coastal polynyas documented in a recent study, the Amundsen Sea Polynya (ASP) stands out as having the highest net primary production per unit area. Incubation experiments suggest that this productivity is partly controlled by the availability of dissolved iron (dFe). As a first step toward understanding the iron supply of the ASP, we introduce four...

Cameron Pass NASA SnowEx - Burn Site TLS U-077 PS02 SV02

Daniel McGrath, Samuel Beane, Marianne Okal, Keith Williams, Nicolas Bayou, Diana Krupnik & Erika Schreiber

Keithly Fire Fuel and Fuel Consumption

, Andrew T. Hudak, Joseph C. Restaino, Michael Billmire, Nancy H. F. French, Roger D. Ottmar, Bridget Hass, Kyle Zarzana, Tristan Goulden & Rainer Volkamer
Data Overview Mapped attributes: Fuel consumption derived from ALS data Post-fire fuel load derived from ALS data Pre-fire fuel load derived from ALS data Fuel consumption derived from FCCS data Post-fire fuel load derived from FCCS data Pre-fire fuel load derived from FCCS data Supplements: ALS data extent Keithly fire perimeter Keithly AOI fire perimeter Description Landscape scale estimates of pre-fire fuel load and fuel consumption are valuable resources for land managers and scientists. We...

Lake Agnes Rock Glacier TLS/SfM survey - Lake Agnes Rock Glacier TLS U-074 PS01 SV03

DANIEL MCGRATH, Keith Williams, Marianne Okal, Brianna Rick, Lucas Zeller, Anna Marshall, Erika Schreiber & Diana Krupnik

Data from: A migratory divide spanning two continents is associated with genomic and ecological divergence

Sheela Turbek, Drew Schield, Elizabeth Scordato, Andrea Contina, Xin-Wei Da, Yang Liu, Yu Liu, Emilio Pagani-Núñez, Qing-Miao Ren, Chris Smith, Craig Stricker, Michael Wunder, David Zonana & Rebecca Safran
Migratory divides are contact zones between breeding populations with divergent migratory strategies during the non-breeding season. These locations provide an opportunity to evaluate the role of seasonal migration in the maintenance of reproductive isolation, particularly the relationship between population structure and features associated with distinct migratory strategies. We combine light-level geolocators, genomic sequencing, and stable isotopes to investigate the timing of migration and migratory routes of individuals breeding on either side of a migratory divide...

Data from: Decoding the dynamics of dental distributions: insights from shark demography and dispersal

Sora Kim, Justin Yeakel, Juergen Kriwet, Meghan Balk, Jaelyn Eberle, Sarah Zeichner & Dina Fieman
Shark teeth are the most abundant vertebrate fossil, and because tooth size generally correlates with body size, their accumulations document the size structure of populations. Understanding how ecological and environmental processes influence size structure, and how this extends to influence these dental distributions, may offer a window into the ecological and environmental dynamics of past and present shark populations. Here we examine the dental distributions of sand tigers, including extant Carcharias taurus and extinct Striatolamia...

Black capped and mountain chickadee nestling fecal samples

Kathryn Grabenstein
Urban and suburban ecosystems are growing in size and number as the human population continues to increase. Not all cities are built the same, however, and it is still unclear how resident organisms are faring in increasingly urban habitats and whether cities are ecological sinks. To investigate how urbanization is affecting breeding success in insectivorous birds, we studied two species of chickadee, the black-capped and mountain chickadee[KG1] , along an urban-rural gradient in Boulder County,...

Data from: Convergent evolution of disordered lipidic structural color in the fruits of Lantana strigocamara (syn. L. camara hybrid cultivar)

Miranda Sinnott-Armstrong, Yu Ogawa, Gea Van De Kerkhof, Silvia Vignolini & Stacey Smith
Research conducted: The majority of plant colors are produced by anthocyanin and carotenoid pigments, but coloration obtained by nanostructured materials (i.e., structural colors) is increasingly reported in plants. Here, we identify a multilayer photonic structure in the fruits of Lantana strigocamara and compare it to a previously described origin in Viburnum tinus. Methods: We used a combination of transmission electron microscopy, serial EM tomography, scanning force microscopy, and optical simulations to characterize the photonic structure...

Assessment of biogeographic variation in traits of Lewis flax (Linum lewisii) for use in restoration and agriculture

Peter Innes, André Gossweiler, Scott Jensen, Derek Tilley, Loren St. John, Thomas Jones, Stanley Kitchen & Brent S. Hulke
Lewis flax (Linum lewisii) is widely distributed across western North America and is currently used in native ecosystem restoration. There is also growing interest in de novo domestication of Lewis flax as a perennial oilseed crop. To better understand this species and facilitate both restoration and domestication, we used common gardens to assess bio-geographical variation in a variety of seed and growth traits from 37 flax accessions, consisting of 35 wild populations from the Intermountain...

Memory array locations, delay times, and participant response

Kyra Schapiro, Kresimir Josic, Joshua Gold & Zachary Kilpatrick
Deliberative decisions based on an accumulation of evidence over time depend on working-memory, and working memory has limitations, but how these limitations affect deliberative decision-making is not understood. We used human psychophysics to assess the impact of working-memory limitations on the fidelity of a continuous decision variable. Participants decided the average location of multiple visual targets. This computed, continuous decision variable degraded with time and capacity in a manner that depended critically on the strategy...

Data from: Use of an exotic host plant shifts immunity, chemical defense, and viral burden in wild populations of a specialist insect herbivore

Nadya D. Muchoney, M. Deane Bowers, Adrian L. Carper, Peri A. Mason, Mike B. Teglas & Angela M. Smilanich
Defense against natural enemies constitutes an important driver of herbivore host range evolution in the wild. Populations of the Baltimore checkerspot butterfly, Euphydryas phaeton (Nymphalidae), have recently incorporated an exotic plant, Plantago lanceolata (Plantaginaceae), into their dietary range. To understand the tritrophic consequences of utilizing this exotic host plant, we examined immune performance, chemical defense, and interactions with a natural entomopathogen (Junonia coenia densovirus, Parvoviridae) across wild populations of this specialist herbivore. We measured three...

Registration Year

  • 2022

Resource Types

  • Dataset


  • University of Colorado Boulder
  • National Ecological Observatory Network
  • Michigan Tech Research Institute
  • California Department of Forestry and Fire Protection
  • University of Idaho
  • Colorado State University
  • USDA Forest Service
  • Victoria University of Wellington
  • Sun Yat-sen University