14 Works

Data from: Crop production in the USA is frequently limited by a lack of pollinators

James Reilly, Derek Artz, David Biddinger, Kyle Bobiwash, Natalie Boyle, Claire Brittain, Julia Brokaw, Josh Campbell, Jaret Daniels, Elizabeth Elle, Jamie Ellis, Shelby Fleischer, Jason Gibbs, Robert Gillespie, Knute Gundersen, Larry Gut, George Hoffman, Neelendra Joshi, Ola Lundin, Keith Mason, Carley McGrady, Steve Peterson, Theresa Pitts-Singer, Sujaya Rao, Nikki Rothwell … & Rachael Winfree
Most of the world’s crops depend on pollinators, so declines in both managed and wild bees raise concerns about food security. However, the degree to which insect pollination is actually limiting current crop production is poorly understood, as is the role of wild species (as opposed to managed honey bees) in pollinating crops, particularly in intensive production areas. We established a nation-wide study to assess the extent of pollinator limitation in seven crops at 131...

Data from: Going the distance: Influence of distance between boat noise and nest site on the behavior of paternal smallmouth bass

Katharine MacLean, Tanya Prystay, Michael Lawrence, Aarron Zolderdo, Lee Gutowsky, Erica Staaterman, Austin Gallagher & Steven Cooke
The effects of anthropogenic noise have garnered significant attention in marine ecosystems, but comparatively less is known about its impacts on freshwater ecosystems. For fish that provide parental care, the effects of acoustic disturbance could have fitness-level consequences if nest tending behavior is altered. This study explored the effects of motorboat noise on the parental behavior of nesting male smallmouth bass (Micropterus dolomieu; Lacépède, 1802), an important freshwater game fish in North America that provides...

Dataset for: Phosphorus mobilization from intact soil monoliths flooded under simulated summer versus spring snowmelt with intermittent freeze-thaw conditions

Darshani Kumaragamage, Chamara Weerasekera, Wole Akinremi, Srimathie Indraratne & Doug Goltz
Enhanced phosphorus (P) release from flooded, anaerobic soils have been extensively studied under summer temperatures, but not under cold temperatures with intermittent freeze-thaw events. We investigated the temperature and freeze/ thaw effects during flooding on the release of P to floodwater from soil monoliths (15-cm depth) collected from eight agricultural fields in Manitoba. Soil monoliths were flooded with reverse osmosis water and incubated for 56 d under simulated summer flooding (SSF, 22±1 ℃), or snowmelt...

Continent-wide effects of urbanization on bird and mammal genetic diversity

Chloé Schmidt, Michael Domaratzki, Riikka Kinnunen, Jeff Bowman & Colin Garroway
Urbanization and associated environmental changes are causing global declines in vertebrate populations. In general, population declines of the magnitudes now detected should lead to reduced effective population sizes for animals living in proximity to humans and disturbed lands. This is cause for concern because effective population sizes set the rate of genetic diversity loss due to genetic drift, the rate of increase in inbreeding, and the efficiency with which selection can act on beneficial alleles....

Wolves choose ambushing locations to counter and capitalize on the sensory abilities of their prey

Thomas Gable, Austin Homkes, Sean Johnson-Bice, Steve Windels & Joseph Bump
Wolves (Canis lupus) are primarily cursorial predators, but they use ambush strategies to hunt beavers (Castor canadensis). Terrestrial beaver activity is predictable because beavers use well-defined, conspicuous habitat features repeatedly. Thus, studying where wolves wait-in-ambush for beavers provides a unique opportunity to understand how predators choose ambush locations in relation to prey activity. We searched 11,817 clusters of GPS-locations from wolves in the Greater Voyageurs Ecosystem, Minnesota, USA and documented 748 ambushing sites and 214...

Weed seedling images of species common to Manitoba, Canada

Michael Beck, Chen-Yi Liu, Christopher Bidinosti, Christopher Henry, Cara Godee & Manisha Ajmani
This dataset contains 34666 RGB-images taken from different angles and distances of weeds common in Manitoba. The imaged species common name, scientific name, and number of their images are: Echinochloa crus-galli Large Barnyard Grass 8621 Cirsium arvense Canada Thistle 4706 Brassica napus Volunteer Canola 6723 Taraxacum officinale Dandelion 4797 Persicaria spp. Smartweed 870 Fallopia convolvulus Wild Buckwheat 4165 Avena fatua Wild Oat 1218 Setaria pumila Yellow Foxtail 3566 Furthermore, this dataset contains a trained ResNet50...

Data from: Bee phenology is predicted by climatic variation and functional traits

Michael Stemkovski, Will Pearse, Sean Griffin, Gabriella Pardee, Jason Gibbs, Terry Griswold, John Neff, Ryan Oram, Molly RightMyer, Cory Sheffield, Karen Wright, Brian Inouye, David Inouye & Rebecca Irwin
Climate change is shifting the environmental cues that determine the phenology of interacting species. Plant-pollinator systems may be susceptible to temporal mismatch if bees and flowering plants differ in their phenological responses to warming temperatures. While the cues that trigger flowering are well-understood, little is known about what determines bee phenology. Using Generalized Additive Models, we analyzed time-series data representing 67 bee species collected over nine years in the Colorado Rocky Mountains to perform the...

Spectrum of cerebral arteriopathies in children with arterial ischaemic stroke

Mubeen Rafay
Objective: To determine that children with arterial ischaemic stroke due to an identifiable arteriopathy are distinct from those without arteriopathy, and that each arteriopathy subtype has unique and recognizable clinical features. Methods: We report a large, observational, multicenter cohort of children with AIS, age 1-month to 18-years, enrolled into the International Pediatric Stroke Study from 2003 to 2014. Clinical and demographic differences were compared using the Fisher exact test, with linear step-up permutation min-p adjustment...

Data from: Feeding specialisation and longer generation time are associated with relatively larger brains in bees

Ferran Sayol, Miguel Á. Collado, Joan Garcia-Porta, Marc A. Seid, Jason Gibbs, Ainhoa Agorreta, Diego San Mauro, Ivo Raemakers, Daniel Sol & Ignasi Bartomeus
Despite their miniature brains, insects exhibit substantial variation in brain size. Although the functional significance of this variation is increasingly recognized, research on whether differences in insect brain sizes are mainly the result of constraints or selective pressures has hardly been performed. Here, we address this gap by combining prospective and retrospective phylogenetic-based analyses of brain size for a major insect group, bees (superfamily Apoidea). Using a brain dataset of 93 species from North America...

Data from: Shells of the bivalve Astarte moerchi give new evidence of a strong pelagic-benthic coupling shift occurring since the late 1970s in the NOW Polynya

Frederic Olivier, Blandine Gaillard, Julien Thébault, Tarik Meziane, Réjean Tremblay, Dany Dumont, Simon Bélanger, Michel Gosselin, Aurélie Jolivet, Laurent Chauvaud, André L. Martel, Søren Rysgaard, Anne-Hélène Olivier, Julien Pettré, Jérôme Mars, Silvain Gerber & Philippe Archambault
Climate changes in the Arctic may weaken the currently tight pelagic-benthic coupling. In response to decreasing sea ice cover, arctic marine systems are expected to shift from a ‘sea-ice algae-benthos’ to a ‘phytoplankton-zooplankton’ dominance. We used mollusk shells as bioarchives and fatty acid trophic markers to estimate the effects of the reduction of sea ice cover on the exported food to the seafloor. Bathyal bivalve Astarte moerchi that lives at 600 m depth in northern...

Evidence for an extreme founding effect in a highly successful invasive species: data and R code

Jane Waterman, Kateryna Kratzer, Annemarie Van Der Marel, Colin Garroway, Marta López-Darias & Stephen Petersen
The adaptive potential of invasive species is thought to decrease during founding events due to reduced genetic diversity, limiting the new population’s ability to colonize novel habitats. Barbary ground squirrels (Atlantoxerus getulus) were purportedly introduced as a single breeding pair to the island of Fuerteventura but have expanded to over a million individuals spread across the island in just over 50 years. We estimated the number of founders and measured the level of genetic diversity...

Phosphorus release from intact soil monoliths of manure amended fields under simulated snowmelt flooding

Darshani Kumaragamage, Angela Concepcion, Wole Akinremi, Saman Dharmakeerthi, Doug Goltz & Srimathie Indraratne
Anaerobic conditions developed in soils with flooding can enhance the release of soil phosphorus (P) to overlying water, but little information is available for soils with a long history of manure application. We examined the P release from manure-amended soils under simulated snowmelt flooding. Intact monoliths from manured (solid-swine, SSM or liquid swine, LSM) and unamended (control) field plots were collected from Carman, Manitoba. Monoliths were frozen for seven days, then thawed, flooded and incubated...

Wind creates crown shyness, asymmetry and orientation in a tropical montane oak forest

John Markham, John Markham & Mauricio Fernández Otárola
In a cloud forest dominated by Quercus costaricensis the gap size between the crowns was consistent and crowns were asymmetrical, being elongated perpendicular to the prevailing wind direction. A wind storm of 20 m s-1 removed 1.5% of the leaves, consistent with the idea that wind abrasion shapes tree crowns.

Data from: Divergence of Arctic shrub growth associated with sea ice decline

Agata Buchwal, Patrick F. Sullivan, Marc Macias-Fauria, Eric Post, Isla H. Myers-Smith, Julienne C. Stroeve, Daan Blok, Ken D. Tape, Bruce C. Forbes, Pascale Ropars, Esther Lévesque, Bo Elberling, Sandra Angers-Blondin, Joseph S. Boyle, Stéphane Boudreau, Noémie Boulanger-Lapointe, Cassandra Gamm, Martin Hallinger, Grzegorz Rachlewicz, Amanda Young, Pentti Zetterberg & Jeffrey M. Welker
Arctic sea ice extent (SIE) is declining at an accelerating rate with a wide range of ecological consequences. However, determining sea ice effects on tundra vegetation remains a challenge. In this study, we examined the universality or lack thereof in tundra shrub growth responses to changes in SIE and summer climate across the Pan-Arctic, taking advantage of 23 tundra shrub-ring chronologies from 19 widely distributed sites (56⁰-83⁰N).

Registration Year

  • 2020

Resource Types

  • Dataset


  • University of Manitoba
  • University of Winnipeg
  • University of Minnesota
  • Swedish University of Agricultural Sciences
  • Université du Québec à Rimouski
  • Université Laval
  • North Carolina State University
  • University of California, Davis
  • Estación Biológica de Doñana
  • University of Eastern Finland