15 Works

Data from: A temporally intensive survey of bacterial communities of Brassica napus genotypes grown in three environments

Jennifer K. Bell, Steven D. Mamet, Zayda Morales Moreira, Shanay Williams, Charlotte Norris, Tanner Dowry, Zelalem M. Taye, Eric G. Lamb, Matthew Links, Steven Shirtliffe, Melissa Arcand, Sally Vail, Bobbi Helagson & Steven D. Siciliano
Soil bacterial communities play vital roles in nutrient cycling and plant health. Breeding staple crops to have more robust microbiomes may be a sustainable way to improve crop yield without increasing inputs, leading to better global food security. We collected root and rhizosphere soil samples from sixteen genotypes of canola weekly for ten weeks at one site in 2016 and at three time points across three sites in 2017. We sequenced the 16S ribosomal RNA...

Science to inform policy: linking population dynamics to habitat for a threatened species in Canada

Cheryl Johnson, Glenn Sutherland, Erin Neave, Mathieu Leblond, Patrick Kirby, Clara Superbie & Philip McLoughlin
Abstract 1. Boreal forests provide numerous ecological services, including the ability to store large amounts of carbon, and are of significance to global biodiversity. Increases in industrial activities in boreal landscapes since the mid-20th century have added to concerns over biodiversity loss and climate change. Boreal forests are home to dwindling populations of boreal caribou (Rangifer tarandus caribou) in Canada, a species at risk that requires large, undisturbed landscapes for persistence. In 2012, the Canadian...

Causes and consequences of an unusually male-biased adult sex ratio in an unmanaged feral horse population

Charlotte Regan, Sarah Medill, Jocelyn Poissant & Philip McLoughlin
1. The adult sex ratio (ASR) is important within ecology due to its predicted effects on behaviour, demography, and evolution, but research examining the causes and consequences of ASR bias have lagged behind studies of sex ratios at earlier life stages. Although ungulate ASR is relatively well-studied, exceptions to the usual female-biased ASR challenge our understanding of the underlying drivers of biased ASR, and provide an opportunity to better understand its consequences. 2. Some feral...

The tepary bean genome provides insight into evolution and domestication under heat stress

Samira Mafi Moghaddam, Atena Oladzad, Chu Shin Koh, Larissa Ramsay, John Hart, Sujan Mamidi, Genevieve Hoopes, Avinash Sreedasyam, Andrew Wiersma, Dongyan Zhao, Jane Grimwood, John P. Hamilton, Jerry Jenkins, Brieanne Vaillancourt, Joshua C. Wood, Jeremy Schmutz, Sateesh Kahale, Tiomothy Porch, Kirstin E. Bett, C. Robin Buell & Phillip E. McClean
Tepary bean (Phaseolus acutifolis A. Gray), native to the Sonoran Desert, is highly adapted to heat and drought. It is a sister species of common bean (Phaseolus vulgaris L.), the most important legume protein source for direct human consumption, and whose production is threatened by climate change. Analysis of the tepary genome revealed mechanisms for resilience to moderate heat stress and a reduced disease resistance gene repertoire, consistent with adaptation to arid, hot environments. Extensive...

Data from: A survey of invasive plants on grassland soil microbial communities and ecosystem services

Jennifer Bell, Steven Siciliano & Eric Lamb
Invasive plants can cause changes in structure and function of the ecosystem undergoing invasion. Any changes in ecosystem diversity and community composition will likely alter ecosystem services provided by that ecosystem. However, how these ecosystem services may change is poorly understood. To elucidate how these ecosystem services will change with invasion, we sampled 561 plots undergoing invasion by smooth brome (Bromus inermis) and four other invasive species at a native Rough Fescue prairie located near...

Data from: The fading of fear effects due to coral degradation is modulated by community composition

Maud Ferrari, Mark McCormick, Eric Fakan, Randall Barry & Douglas Chivers
An increasing number of coral reefs throughout the world have become degraded as a result of climate change. This degradation has resulted in a significant decline in local biodiversity. Studies have shown that some fishes (non-responders) within these altered habitats are not able to adequately access olfactory cues, specifically chemical alarm cues that are crucial in mediating predation risk. We propose that the inability to access this crucial information is a potential mechanism for increased...

Local recruitment in Northern Flickers is related to environmental factors at multiple scales and provides reproductive benefits to yearling breeders settling close to home

Karen Wiebe
Natal dispersal and local recruitment are affected by factors both intrinsic and extrinsic to juveniles and may affect fitness. Understanding the relationship between dispersal and population density in birds has been hindered by a lack of long-term studies and a focus on resident species has neglected the role of weather operating at large spatial scales. I studied local recruitment and the reproductive consequences of natal dispersal distance within a population of Northern Flickers (Colaptes auratus),...

Flower-visiting insects and Flowering plants

Lichao Feng, Sina Adl & Qingfan Meng
Flower-visiting insects have co-evolved with flowering-plants. While it has been shown that floral traits and environmental factors influence insects visitations at day, it is yet unclear how these factors influence insects visitations at night. We sampled a montane meadow located near Jilin in northeastern China in July and August, 4 nights each month, and two time periods each night. We sampled 94 flower-visiting insect species in total and documented the floral traits and ambient factors....

Neonicotinoid and sulfoximine pesticides differentially impair insect escape behaviour and motion detection

John Gray, Rachel Parkinson & Sinan Zhang
Insect nervous systems offer unique advantages for studying interactions between sensory systems and behaviour given that they are complex and yet highly tractable. By examining the neural coding of salient environmental stimuli and resulting behavioural output in the context of environmental stressors, we gain an understanding of the effects of these stressors on brain and behaviour and provide insight into normal function. The implication of neonicotinoid (neonic) pesticides in contributing to declines of non-target species,...

Data from: Body temperature, heart rate, and activity patterns of two boreal homeotherms in winter: homeostasis, allostasis, and ecological coexistence

Allyson Menzies, Emily Studd, Yasmine Majchrzak, Michael Peers, Stan Boutin, Ben Dantzer, Jeffrey Lane, Andrew McAdam & Murray Humphries
Organisms survive environmental variation by combining homeostatic regulation of critical states with allostatic variation of other traits, and species differences in these responses can contribute to coexistence in temporally-variable environments. In this paper, we simultaneously record variation in three functional traits – body temperature (Tb), heart rate, and activity - in relation to three forms of environmental variation – air temperature (Ta), photoperiod, and experimentally-manipulated resource levels – in free-ranging snowshoe hares and North American...

Identifying functional impacts of heat-resistant fungi on boreal forest recovery after wildfire

Nicola Day, Steve Cumming, Kari Dunfield, Jill Johnstone, Michelle Mack, Kirsten Reid, Merritt Turetsky, Xanthe Walker & Jennifer Baltzer
Fungi play key roles in carbon (C) dynamics of ecosystems: saprotrophs decompose organic material and return C in the nutrient cycle, and mycorrhizal species support plants that accumulate C through photosynthesis. The identities and functions of extremophile fungi present after fire can influence C dynamics, particularly because plant-fungal relationships are often species-specific. However, little is known about the function and distribution of fungi that survive fires. We aim to assess the distribution of heat-resistant soil...

Contrasting the suitability of shade coffee agriculture and native forest as overwinter habitat for Canada Warbler (Cardellina canadensis) in the Colombian Andes.

Ana M. Gonzalez, Scott Wilson, Nicholas J. Bayly & Keith A. Hobson
In the Neotropics, coffee production occurs on a large scale in some of the planet’s most biodiverse regions: tropical mountains. Coffee production systems involving shade trees are considered to have a lower impact on biodiversity than alternative sun coffee. To date, the majority of evidence for the value of shade coffee plantations has not taken into account the relative quality of this habitat compared to the native forests they replaced. We determined the suitability of...

Could cryoturbic diapirs be key for understanding ecological feedbacks to climate change in High Arctic polar deserts?

Mitsuaki Ota, Steven Mamet, Amanda Muller, Eric Lamb, Gurbir Dhillon, Derek Peak & Steven Siciliano
High Arctic polar deserts cover 26% of the Arctic. Increasing temperatures are predicted to significantly alter polar desert freeze-thaw and biogeochemical cycles, with important implications for greenhouse gas emissions. However, the mechanisms underlyingthese changing cycles are still highly uncertain. Cryoturbic, carbon-rich Bhy horizons (diapirs) in frost boils are key nutrient sources for Salix arctica. We hypothesized that diapirism leads to organic carbon characteristics that alter microbial pathways, which then control root foraging and greenhouse gas...

Territory acquisition mediates the influence of predators and climate on juvenile red squirrel survival

Jack G Hendrix, David Fisher, April Martinig, Stan Boutin, Ben Dantzer, Jeffrey Lane & Andrew McAdam
1) Juvenile survival to first breeding is a key life history stage for all taxa. Survival through this period can be particularly challenging when it can coincide with harsh environmental conditions such as a winter climate or food scarcity, leading to highly variable cohort survival. However, the small size and dispersive nature of juveniles generally makes studying their survival more difficult. 2) In territorial species, a key life history event is the acquisition of a...

Bacterial dispersal and drift drive microbiome diversity patterns within a population of feral hindgut fermenters

Mason Stothart, Ruth Greuel, Stefan Gavriliuc, Astrid Henry, Alastair Wilson, Philip McLoughlin & Jocelyn Poissant
Studies of microbiome variation in wildlife often emphasize host physiology and diet as proximate selective pressures acting on host-associated microbiota. In contrast, microbial dispersal and ecological drift are more rarely considered. Using amplicon sequencing, we characterized the bacterial microbiome of adult female (n = 86) Sable Island horses (Nova Scotia, Canada) as part of a detailed individual-based study of this feral population. Using data on sampling date, horse location, age, parental status, and local habitat...

Registration Year

  • 2020

Resource Types

  • Dataset


  • University of Saskatchewan
  • University of Alberta
  • University of Guelph
  • Environment Canada
  • University of Colorado Boulder
  • University of Calgary
  • Memorial University of Newfoundland
  • Wilfrid Laurier University
  • University of Michigan-Ann Arbor
  • University of Michigan–Ann Arbor