35 Works

Data from: Mesopredator management: effects of red fox control on the abundance, diet and use of space by feral cats

Robyn Molsher, Alan E. Newsome, Thomas M. Newsome & Christopher R. Dickman
Apex predators are subject to lethal control in many parts of the world to minimize their impacts on human industries and livelihoods. Diverse communities of smaller predators - mesopredators - often remain after apex predator removal. Despite concern that these mesopredators may be 'released' in the absence of the apex predator and exert negative effects on each other and on co-occurring prey, these interactions have been little studied. Here, we investigate the potential effects of...

Data from: Limitations of species delimitation based on phylogenetic analyses: a case study in the (Hypogymnia hypotrypa) group (Parmeliaceae, Ascomycota)

Xinli Wei, Bruce McCune, H. Thorsten Lumbsch, Hui Li, Steven Leavitt, Yoshikazu Yamamoto, Svetlana Tchabanenko & Jiangchun Wei
Delimiting species boundaries among closely related lineages often requires a range of independent data sets and analytical approaches. Similar to other organismal groups, robust species circumscriptions in fungi are increasingly investigated within an empirical framework. Here we attempt to delimit species boundaries in a closely related clade of lichen-forming fungi endemic to Asia, the Hypogymnia hypotrypa group (Parmeliaceae). In the current classification, the Hypogymnia hypotrypa group includes two species: H. hypotrypa and H. flavida, which...

Abu Dhabi Blue Carbon project

Lisa Schile, J. Boone Kauffman, J. Patrick Megonigal, James Fourqurean & Stephen Crooks
Coastal ecosystems produce and sequester significant amounts of carbon (‘blue carbon’), which has been well documented in humid and semi-humid regions of temperate and tropical climates but less so in arid regions where mangroves, marshes, and seagrasses exist near the limit of their tolerance for extreme temperature and salinity. To better understand these unique systems, we measured whole-ecosystem carbon stocks (above- and belowground biomass and soil) in 58 sites across the United Arab Emirates in...

Data from: Long-term, high frequency in situ measurements of intertidal mussel bed temperatures using biomimetic sensors

Brian Helmuth, Francis Choi, Allison Matzelle, Jessica L. Torossian, Scott L. Morella, K. A. S. Mislan, Lauren Yamane, Denise Strickland, P. Lauren Szathmary, Sarah Gilman, Alyson Tockstein, Thomas J. Hilbish, Michael T. Burrows, Anne Marie Power, Elizabeth Gosling, Nova Mieszkowska, Christopher D. G. Harley, Michael Nishizaki, Emily Carrington, Bruce Menge, Laura Petes, Melissa M. Foley, Angela Johnson, Megan Poole, Mae M. Noble … & Gerardo Zardi
At a proximal level, the physiological impacts of global climate change on ectothermic organisms are manifest as changes in body temperatures. Especially for plants and animals exposed to direct solar radiation, body temperatures can be substantially different from air temperatures. We deployed biomimetic sensors that approximate the thermal characteristics of intertidal mussels at 71 sites worldwide, from 1998-present. Loggers recorded temperatures at 10–30 min intervals nearly continuously at multiple intertidal elevations. Comparisons against direct measurements...

Data from: Shrub encroachment is linked to extirpation of an apex predator

Christopher E. Gordon, David J. Eldridge, William J. Ripple, Mathew S. Crowther, Ben D. Moore & Mike Letnic
The abundance of shrubs has increased throughout Earth's arid lands. This ‘shrub encroachment’ has been linked to livestock grazing, fire-suppression and elevated atmospheric CO2 concentrations facilitating shrub recruitment. Apex predators initiate trophic cascades which can influence the abundance of many species across multiple trophic levels within ecosystems. Extirpation of apex predators is linked inextricably to pastoralism, but has not been considered as a factor contributing to shrub encroachment. Here, we ask if trophic cascades triggered...

Data from: Interactive influences of climate change and agriculture on aquatic habitat in a Pacific Northwestern watershed

Sandra J. DeBano, David. E. Wooster, Jonathan R. Walker, Laura E. McMullen, Donald A. Horneck & David E. Wooster
Climate change and agricultural intensification are two potential stressors that may pose significant threats to aquatic habitats in the inland Pacific Northwest over the next century. Climate change may impact running water through numerous pathways, including effects on water temperature and stream flow. In certain regions of the Pacific Northwest, agricultural activities, such as crop production, may become more profitable if water projects result in more irrigation water. If so, riparian buffers in these areas...

Data from: Timber harvest and tree size near nests explains variation in nest site occupancy but not productivity in northern goshawks (Accipiter gentilis)

Sabrina A. Rodriguez, Patricia L. Kennedy & Timothy H. Parker
Conservation concern for the northern goshawk (Accipiter gentilis) reflects evidence that goshawks may abandon nest sites or suffer from reduced nesting success in response to some forms of timber harvest. However, this evidence is mixed and has yet to be reviewed systemically and quantitatively. Therefore, we conducted a meta-analysis to assess the extent to which timber harvest and tree size explain variation in goshawk productivity and site occupancy. Goshawk productivity was not significantly explained by...

Data from: Closing a gap in tropical forest biomass estimation: taking crown mass variation into account in pantropical allometries

Pierre Ploton, Nicholas Barbier, Stéphane Takoudjou Momo, Maxime Réjou-Méchain, Faustin Boyemba Bosela, Georges Chuyong, Gilles Dauby, Vincent Droissart, Adeline Fayolle, Rosa Calisto Goodman, Mathieu Henry, Narcisse Guy Kamdem, John Katembo Mukirania, David Kenfack, Moses Libalah, Alfred Ngomanda, Vivien Rossi, Bonaventure Sonké, Nicolas Texier, Duncan Thomas, Donatien Zebaze, Pierre Couteron, Uta Berger & Raphaël Pélissier
Accurately monitoring tropical forest carbon stocks is an outstanding challenge. Allometric models that consider tree diameter, height and wood density as predictors are currently used in most tropical forest carbon studies. In particular, a pantropical biomass model has been widely used for approximately a decade, and its most recent version will certainly constitute a reference in the coming years. However, this reference model shows a systematic bias for the largest trees. Because large trees are...

Data from: Experimental insight into the process of parasite community assembly

Sarah A. Budischak, Eric P. Hoberg, Art Abrams, Anna E. Jolles & Vanessa O. Ezenwa
1.Community assembly is a fundamental process that has long been a central focus in ecology. Extending community assembly theory to communities of co-infecting parasites, we used a gastrointestinal nematode removal experiment in free-ranging African buffalo to examine community assembly patterns and processes. 2.We first asked whether reassembled communities differ from undisturbed communities by comparing anthelmintic-treated and control hosts. Next, we examined the temporal dynamics of assembly using a cross-section of communities that reassembled for different...

Data from: Evaluating carbon storage, timber harvest, and habitat possibilities for a western Cascades (US) forest landscape

Jeffrey Kline, Mark Harmon, Thomas Spies, Anita Morzillo, Robert Pabst, Brenda McComb, Frank Schnekenburger, Keith Olsen, Blair Csuti, Jody Vogeler, Jeffrey D. Kline, Thomas A. Spies, Brenda C. McComb, Anita T. Morzillo, Mark E. Harmon, Robert J. Pabst, Keith A. Olsen & Jody C. Vogeler
Forest policymakers and managers have long sought ways to evaluate the capability of forest landscapes to jointly produce timber, habitat, and other ecosystem services in response to forest management. Currently, carbon is of particular interest as policies for increasing carbon storage on federal lands are being proposed. However, a challenge in joint production analysis of forest management is adequately representing ecological conditions and processes that influence joint production relationships. We used simulation models of vegetation...

Data from: Genetic signatures of ecological diversity along an urbanization gradient

Ryan P. Kelly, James L. O'Donnell, Natalie C. Lowell, Andrew O. Shelton, Jameal F. Samhouri, Shannon M. Hennessey, Blake E. Feist & Gregory D. Williams
Despite decades of work in environmental science and ecology, estimating human influences on ecosystems remains challenging. This is partly due to complex chains of causation among ecosystem elements, exacerbated by the difficulty of collecting biological data at sufficient spatial, temporal, and taxonomic scales. Here, we demonstrate the utility of environmental DNA (eDNA) for quantifying associations between human land use and changes in an adjacent ecosystem. We analyze metazoan eDNA sequences from water sampled in nearshore...

Data from: Potentially adaptive mitochondrial haplotypes as a tool to identify divergent nuclear loci

Michael R. Garvin, William D. Templin, Anthony J. Gharrett, Nick DeCovich, Christine M. Kondzela, Jeffrey R. Guyon & Megan V. McPhee
1. Genetic tools are commonly used for conservation and management of at-risk species. Individuals are often sampled from mixtures composed of many populations, which creates a need to assign individuals to their source. This can be problematic when the genetic divergence among source populations is weak but can be improved using adaptive genetic loci, which should show stronger levels of divergence. 2. We previously reported a signature of positive selection in the mitochondrial-encoded ND5 subunit...

Data from: Female behavior and the interaction of male and female genital traits mediate sperm transfer during mating.

Christopher R. Friesen, Emily J. Uhrig, Robert T. Mason & Patricia L.R. Brennan
Natural selection and post-copulatory sexual selection, including sexual conflict, contribute to genital diversification. Fundamental first steps in understanding how these processes shape the evolution of specific genital traits are to determine their function experimentally and to understand the interactions between female and male genitalia during copulation. Our experimental manipulations of male and female genitalia in red-sided garter snakes (Thamnophis sirtalis parietalis) reveal that copulation duration and copulatory plug deposition, as well as total and oviductal/vaginal...

Data from: Predator-guided sampling reveals biotic structure in the bathypelagic

Kelly J. Benoit-Bird, Brandon L. Southall & Mark A. Moline
We targeted habitat used differentially by deep-diving, air-breathing predators to empirically sample their prey’s distributions off southern California. Fine-scale measurements of the spatial variability of potential prey animals from the surface to 1200 m were obtained using conventional fisheries echosounders aboard a surface ship and uniquely integrated into a deep-diving autonomous vehicle. Significant spatial variability in the size, composition, total biomass, and spatial organization of biota was evident over all spatial scales examined and was...

Data from: Populations of aspen (Populus tremuloides Michx.) with different evolutionary histories differ in their climate occupancy

Burke T. Greer, Christopher Still, Glenn T. Howe, Christina Tague & Dar A. Roberts
Quaking aspens (Populus tremuloides Michx.) are found in diverse habitats throughout North America. While the biogeography of aspens' distribution has been documented, the drivers of the phenotypic diversity of aspen are still being explored. In our study, we examined differences in climate between northern and southwestern populations of aspen, finding large-scale differences between the populations. Our results suggest that northern and southwestern populations live in distinct climates and support the inclusion of genetic and phenotypic...

Data from: Studying long-term, large-scale grassland restoration outcomes to improve seeding methods and reveal knowledge gaps

Matthew J. Rinella, Erin K. Espeland & Bruce J. Moffatt
Studies are increasingly investigating effects of large-scale management activities on grassland restoration outcomes. These studies are providing useful comparisons among currently used management strategies, but not the novel strategies needed to rapidly improve restoration efforts. Here we illustrate how managing restoration projects adaptively can allow promising management innovations to be identified and tested. We studied 327 Great Plains fields seeded after coal mining. We modelled plant responses to management strategies to identify the most effective...

Data from: Corridors restore animal-mediated pollination in fragmented tropical forest landscapes

Urs Kormann, Christoph Scherber, Teja Tscharntke, Nadja Klein, Manuel Larbig, Jonahon Valente, Adam Hadley, Matthew Betts, Matthew G. Betts, Adam S. Hadley & Jonathon J. Valente
Tropical biodiversity and associated ecosystem functions have become heavily eroded through habitat loss. Animal-mediated pollination is required in >94% of higher tropical plant species and 75% of the world´s leading food crops, but it remains unclear if corridors avert deforestation-driven pollination breakdown in fragmented tropical landscapes. Here, we used manipulative resource experiments and field observations to show that corridors functionally connect neotropical forest fragments for forest-associated hummingbirds and increase pollen transfer. Further, corridors boosted forest-associated...

Data from: Silicone wristbands detect individuals' pesticide exposures in West Africa

Carey E. Donald, Richard P. Scott, Kathy L. Blaustein, Mary L. Halbleib, Makhfousse Sarr, Paul C. Jepson & Kim A. Anderson
We detected between 2 and 10 pesticides per person with novel sampling devices worn by 35 participants who were actively engaged in farming in Diender, Senegal. Participants were recruited to wear silicone wristbands for each of two separate periods of up to 5 days. Pesticide exposure profiles were highly individualized with only limited associations with demographic data. Using a 63-pesticide dual-column gas chromatography–electron capture detector (GC-ECD) method, we detected pyrethoid insecticides most frequently, followed by...

Data from: The spatial dynamics of predators and the benefits and costs of sharing information

Matthieu Barbier & James R. Watson
Predators of all kinds, be they lions hunting in the Serengeti or fishermen searching for their catch, display various collective strategies. A common strategy is to share information about the location of prey. However, depending on the spatial characteristics and mobility of predators and prey, information sharing can either improve or hinder individual success. Here, our goal is to investigate the interacting effects of space and information sharing on predation efficiency, represented by the expected...

Data from: Success despite the stress: violet-green swallows increase glucocorticoids and maintain reproductive output despite experimental increases in flight costs

James W. Rivers, Gretchen N. Newberry, Carl J. Schwarz & Daniel R. Ardia
Glucocorticoid steroid hormones play a central role in regulating the metabolic state of animals, especially when they cope with unanticipated stressors in their environment. The cort-adaptation hypothesis predicts that baseline concentrations of glucocorticoids are adjusted upward to match energetic needs and promote fitness when individuals are faced with physiological challenges, including those associated with reproduction. We tested the cort-adaptation hypothesis in the violet-green swallow (Tachycineta thalassina) by experimentally increasing flight costs during the offspring rearing...

Data from: Plant diversity enhances moth diversity in an intensive forest management experiment

Heather T. Root, Jake Verschuyl, Thomas Stokely, Paul Hammond, Melissa A. Scherr & Matthew G. Betts
Intensive forest management (IFM) promises to help satisfy increasing global demand for wood, but may come at the cost of local reductions to forest biodiversity. IFM often reduces early seral plant diversity as a result of efforts to eliminate plant competition with crop trees. If diversity is a function of bottom-up drivers, theory predicts that specialists at lower trophic levels (e.g., insect herbivores) should be particularly sensitive to reductions in plant diversity. We conducted a...

Data from: An integrated approach to historical population assessment of the great whales: case of the New Zealand southern right whale

Jennifer A. Jackson, Emma L. Carroll, Tim D. Smith, Alex N. Zerbini, Nathalie J. Patenaude & C. Scott Baker
Accurate estimation of historical abundance provides an essential baseline for judging the recovery of the great whales. This is particularly challenging for whales hunted prior to twentieth century modern whaling, as population-level catch records are often incomplete. Assessments of whale recovery using pre-modern exploitation indices are therefore rare, despite the intensive, global nature of nineteenth century whaling. Right whales (Eubalaena spp.) were particularly exploited: slow swimmers with strong fidelity to sheltered calving bays, the species...

Data from: Replicated landscape genetic and network analyses reveal wide variation in functional connectivity for American pikas

Jessica A. Castillo, Clinton W. Epps, Mackenzie R. Jeffress, Chris Ray, Thomas J. Rodhouse & Donelle Schwalm
Landscape connectivity is essential for maintaining viable populations, particularly for species restricted to fragmented habitats or naturally arrayed in metapopulations and facing rapid climate change. The importance of assessing both structural connectivity (the physical distribution of favorable habitat patches) and functional connectivity (how species move among habitat patches) for managing such species is well understood. However, the degree to which functional connectivity for a species varies among landscapes, and the resulting implications for conservation, have...

Data from: Tropical forest fragmentation limits movements, but not occurrence of a generalist pollinator species

Noelia L. Volpe, W. Douglas Robinson, Sarah J. K. Frey, Adam S. Hadley & Matthew G. Betts
Habitat loss and fragmentation influence species distributions and therefore ecological processes that depend upon them. Pollination may be particularly susceptible to fragmentation, as it depends on frequent pollinator movement. Unfortunately, most pollinators are too small to track efficiently which has precluded testing the hypothesis that habitat fragmentation reduces or eliminates pollen flow by disrupting pollinator movement. We used radio-telemetry to examine space use of the green hermit hummingbird (Phaethornis guy), an important 'hub' pollinator of...

Data from: Long-term aggregation of larval fish siblings during dispersal along an open coast

Daniel Ottmann, Kirsten Grorud-Colvert, Nicholas M. Sard, Brittany E. Huntington, Michael A. Banks & Su Sponaugle
Pelagic dispersal of most benthic marine organisms is a fundamental driver of population distribution and persistence and is thought to lead to highly mixed populations. However, the mechanisms driving dispersal pathways of larvae along open coastlines are largely unknown. To examine the degree to which early stages can remain spatially coherent during dispersal, we measured genetic relatedness within a large pulse of newly recruited splitnose rockfish (Sebastes diploproa), a live-bearing fish whose offspring settle along...

Registration Year

  • 2016
    35

Resource Types

  • Dataset
    35

Affiliations

  • Oregon State University
    35
  • University of Washington
    3
  • University of Georgia
    3
  • United States Department of Agriculture
    3
  • University of Sydney
    3
  • University of Kansas
    2
  • Stanford University
    2
  • Southwest Fisheries Science Center
    2
  • University of California, Santa Barbara
    2
  • University of St Andrews
    2