41 Works

Data from: Daphniid zooplankton assemblage shifts in response to eutrophication and metal contamination during the Anthropocene

Mary Alta Rogalski, Peter R. Leavitt & David K. Skelly
Human activities during the Anthropocene result in habitat degradation that has been associated with biodiversity loss and taxonomic homogenization of ecological communities. Here we estimated effects of eutrophication and heavy metal contamination, separately and in combination, in explaining zooplankton species composition during the past 125–145 years using analysis of daphniid diapausing egg banks from four lakes in the northeastern USA. We then examined how these community shifts influenced patterns of diversity and homogenization. Analysis of...

Wood Mountain Walk: Afterthoughts on a Pilgrimage for Andrew Suknaski

Ken Wilson
Ken Wilson’s ‘Wood Mountain Walk: Afterthoughts on a Pilgrimage for Andrew Suknaski’ reflects on a 250-kilometre walking pilgrimage made in honour of the late Canadian poet Andrew Suknaski. Wilson’s autoethnographic essay considers the possibilities and challenges of walking as a way to engage with land and community; Suknaski’s book Wood Mountain Poems and the issue of cultural appropriation; what it is like to walk in a sparsely populated and arid agricultural province where trespassing laws...

Reinterpreting arts-based data through a posthumanist lens - Reinterpreting arts-based data through multiple theories

Joanne Weber

Interspecific variation in evaporative water loss and temperature response, but not metabolic rate, among hibernating bats

Liam McGuire, Nathan Fuller, Yvonne Dzal, Catherine Haase, Brandon Klüg-Baerwald, Kirk Silas, Raina Plowright, Cori Lausen, Craig Willis & Sarah Olson
Hibernation is widespread among mammals in a variety of environmental contexts. However, few experimental studies consider interspecific comparisons, and for many unstudied (or understudied) species we must assume the underlying physiology of hibernation is comparable to the relatively few species that have been studied in detail. Studies of interspecific variation provide insight into general patterns of hibernation strategies. We studied 13 species of free-living bats, including populations spread over thousands of kilometers and diverse habitats....

Additional file 1 of Medium-chain triglycerides may improve memory in non-demented older adults: a systematic review of randomized controlled trials

Panagiotis Giannos, Konstantinos Prokopidis, Irene Lidoriki, Konstantinos K. Triantafyllidis, Konstantinos S. Kechagias, Kamil Celoch, Darren G. Candow, Sergej M. Ostojic & Scott C. Forbes
Additional file 1: Table S1. Search terms employed in the literature search.

Data from: The diet of Myotis lucifugus across Canada: assessing foraging quality and diet variability

Elizabeth L. Clare, William O. C. Symondson, Hugh Broders, François Fabianek, Erin E. Frazer, Alistair MacKenzie, Andrew Boughen, Rachel Hamilton, Craig K. R. Willis, Felix Martinez-Nuñez, Allyson K. Menzies, Kaleigh J. O. Norquay, Mark Brigham, Joseph Poissant, Jody Rintoul, Robert M. R. Barclay, Jesika P. Reimer & Erin E. Fraser
Variation in prey resources influences the diet and behaviour of predators. When prey become limiting, predators may travel farther to find preferred food or adjust to existing local resources. When predators are habitat limited, local resource abundance impacts foraging success. We analysed the diet of Myotis lucifugus (little brown bats) from Nova Scotia (eastern Canada) to the Northwest Territories (north-western Canada). This distribution includes extremes of season length and temperature and encompasses colonies on rural...

Data from: Decreased root heterogeneity and increased root length following grassland invasion

Brenda M. Vaness, Scott D. Wilson & Andrew S. MacDougall
1. Plant invasions can be promoted by environmental heterogeneity, but the opposite effect, the impact of plant invasion on heterogeneity, has received little attention. Grassland invasions might contribute to decreased spatial heterogeneity because invaders tend to be larger than native vegetation. Lowered heterogeneity may contribute to the low diversity of invaded communities, as well as to the persistence of invasive populations. 2. We compared the spatial heterogeneity of roots and resources in uninvaded native grassland...

Data from: Fine-scale ecological and genetic population structure of two whitefish (Coregoninae) species in the vicinity of industrial thermal emissions

Carly F. Graham, Rebecca L. Eberts, Thomas D. Morgan, Douglas R. Boreham, Stacey L. Lance, Richard G. Manzon, Jessica A. Martino, Sean M. Rogers, Joanna Y. Wilson & Christopher M. Somers
Thermal pollution from industrial processes can have negative impacts on the spawning and development of cold-water fish. Point sources of thermal effluent may need to be managed to avoid affecting discrete populations. Correspondingly, we examined fine-scale ecological and genetic population structure of two whitefish species (Coregonus clupeaformis and Prosopium cylindraceum) on Lake Huron, Canada, in the immediate vicinity of thermal effluent from nuclear power generation. Niche metrics using δ13C and δ15N stable isotopes showed high...

Know Thyself and Change the World’: The Western Pilgrimage Narrative and South Asia

Dorothy Lane
This paper summarises recurring elements of contemporary pilgrimage narratives related to South Asia and their role in neo-colonial ‘globalisation.’ While sacred sites are visited by both local and international pilgrims, their recreation as story cannot be regarded as innocent, interwoven as it is in historical domination and appropriation. The paper focuses on two contemporary narratives that draw on the motif of odyssey. It explores, in part, the increasing role of social media and technology in...

Adherence to wearing facemasks during the COVID-19 pandemic

Steven Taylor & Gordon Asmundson
This study reports a comprehensive empirical investigation of the nature and correlates of anti-mask attitudes during the COVID-19 pandemic. Accumulating evidence underscores the importance of facemasks, as worn by the general public, in limiting the spread of infection. Accordingly, mask wearing has become increasingly mandatory in public places such as stores and on public transit. Although the public has been generally adherent to mask wearing, a small but vocal group of individuals refuse to wear...

Data from: Free-ranging bats alter thermoregulatory behavior in response to reproductive stage, roost type, and weather

Scott Bergeson, Mark Brigham & Joy O'Keefe
Heterotherms vary their use of torpor and choice of refugia to deal with energetic stresses such as reproductive activity and extreme weather. We hypothesized that a temperate-region bat would vary its use of heterothermy in response to air temperature but use of torpor would also be influenced by reproductive stage and roost choice. To test this hypothesis, we collected data on skin temperatures of female Indiana bats (Myotis sodalis) carrying temperature-sensitive radiotransmitters during the summers...

Data from: Diurnal body temperature patterns in free-ranging populations of two southern African arid-zone nightjars

Ryan S. O'Connor, R. Mark Brigham & Andrew E. McKechnie
Endotherms allocate large amounts of energy and water to the regulation of a precise body temperature (Tb), but can potentially reduce thermoregulatory costs by allowing Tb to deviate from normothermic levels. Many data on heterothermy at low air temperatures (Ta) exist for caprimulgids, whereas data on thermoregulation at high Ta are largely absent, despite members of this taxon frequently roosting and nesting in sites exposed to high operative temperatures. We investigated thermoregulation in free-ranging Rufous-cheeked...

Data from: Spatio-temporal and demographic variation in the diet of New Zealand lesser short-tailed bats (Mystacina tuberculata)

Zenon J. Czenze, J. Leon Tucker, Elizabeth L. Clare, Joanne E. Littlefair, David Hemprich-Bennet, Hernani F.M. Oliveira, R. Mark Brigham, Anthony J.R. Hickey & Stuart Parsons
Variation in the diet of generalist insectivores can be affected by site-specific traits including weather, habitat, and season, as well as demographic traits like reproductive status and age. We used molecular methods to compare diets of three distinct New Zealand populations of lesser short-tailed bats, Mystacina tuberculata. Summer diets were compared between a southern cold-temperate (Eglinton) and a northern population (Puroera). Winter diets were compared between Pureora and a subtropical offshore island population (Hauturu). This...

Data from: Lake regionalization and diatom metacommunity structuring in tropical South America

Xavier Benito, Sherilyn C. Fritz, Miriam Steinitz-Kannan, Maria I. Vélez & Michael M. McGlue
Lakes and their topological distribution across Earth’s surface impose ecological and evolutionary constraints on aquatic metacommunities. In this study, we group similar lake ecosystems as metacommunity units influencing diatom community structure. We assembled a database of 195 lakes from the tropical Andes and adjacent lowlands (8ºN–30ºS and 58–79ºW) with associated environmental predictors to examine diatom metacommunity patterns at two different levels: taxon and functional (deconstructed species matrix by ecological guilds). We also derived spatial variables...

Salmonella enterica serovar Enteritidis EN1660 proteome spectral data

Tzu-Chiao Chao, Stephen Fitzgerald, Stefani C Kary, Keith D MacKenzie, Daniel M Stoebel, Ebtihal Y Alshabib & Andrew DS Cameron
H-NS is a nucleoid structuring protein and global repressor of virulence and horizontally-acquired genes in bacteria. H-NS can interact with itself or with homologous proteins, but protein family diversity and regulatory network overlap remain poorly defined. Here we present a comprehensive phylogenetic analysis that revealed deep-branching clades, dispelling the presumption that H-NS is the progenitor of varied molecular backups. With few exceptions, clades are either entirely chromosomal or entirely plasmid-encoded proteins. On chromosomes, StpA and...

Data for the Big Boom Theory: the Common Nighthawk wing-boom display delineates exclusive nesting territories

Elly Knight, R. Mark Brigham & Erin Bayne
Understanding the functional significance of bird sounds can provide valuable insight into behavior and how birds use habitat. We show that the Common Nighthawk wing-boom display is a territorial signal associated with the nest location that can be used to identify territorial habitat use. In other words, the Common Nighthawk wing-boom display can be considered analogous to song due to its potential function in territoriality. We captured, tagged, and tracked 21 male Common Nighthawks in...

Additional file 1 of Medium-chain triglycerides may improve memory in non-demented older adults: a systematic review of randomized controlled trials

Panagiotis Giannos, Konstantinos Prokopidis, Irene Lidoriki, Konstantinos K. Triantafyllidis, Konstantinos S. Kechagias, Kamil Celoch, Darren G. Candow, Sergej M. Ostojic & Scott C. Forbes
Additional file 1: Table S1. Search terms employed in the literature search.

Medium-chain triglycerides may improve memory in non-demented older adults: a systematic review of randomized controlled trials

Panagiotis Giannos, Konstantinos Prokopidis, Irene Lidoriki, Konstantinos K. Triantafyllidis, Konstantinos S. Kechagias, Kamil Celoch, Darren G. Candow, Sergej M. Ostojic & Scott C. Forbes
Abstract Background Ketosis has been exploited for its neuroprotective impact and treatment of neurological conditions via ketone production. Exogenous medium-chain triglyceride (MCT) supplementation may induce nutritional ketosis. The aim of this systematic review is to explore the effects of MCTs on memory function in older adults without cognitive impairment. Methods A systematic literature search of PubMed, Cochrane Library, Scopus, and Web of Science was employed from inception until April 2022 for randomized controlled trials (RCTs)...

Data from: Root heterogeneity along an arctic elevational gradient: the importance of resolution

Sabrina Träger & Scott D. Wilson
Spatial heterogeneity affects plant performance and is influenced by plants, but the scale at which fine roots react to or generate spatial heterogeneity has received little attention. Fine roots might be expected to respond to heterogeneity at a scale comparable to their diameter (mm), but studies to date have been conducted at much coarser resolutions (cm – m). Here we quantify root heterogeneity in contrasting habitats with special attention to the influence of resolution. We...

Data from: Genetic population structure of the round whitefish (Prosopium cylindraceum) in North America: multiple markers reveal glacial refugia and regional subdivision.

Thomas D. Morgan, Carly F. Graham, Andrew G. McArthur, Amogelang R. Raphenya, Douglas R. Boreham, Richard G. Manzon, Joanna Y. Wilson, Stacey L. Lance, Kimberly L. Howland, Paul H. Patrick & Christopher M. Somers
Round whitefish (Prosopium cylindraceum) have a broad, disjunct range across northern North America and Eurasia, and little is known about their genetic population structure. We performed genetic analyses of round whitefish from 17 sites across its range using nine microsatellites, two mitochondrial DNA (mtDNA) loci, and 4918 to 8835 single-nucleotide polymorphism (SNP) loci. Our analyses identified deep phylogenetic division between eastern and western portions of the range, likely indicative of origins from at least two...

Data from: Quantifying ecological and social drivers of ecological surprise

Karen Filbee-Dexter, Celia C. Symons, Kristal Jones, Heather Haig, Jeremy Pittman, Steven M. Alexander, Matthew J. Burke & Heather A. Haig
1. A key challenge facing ecologists and ecosystem managers is understanding what drives unexpected shifts in ecosystems and limits the effectiveness of human interventions during these events. Research that integrates and analyzes data from natural and social systems can provide important insight for unraveling the complexity of these dynamics, and is a critical step towards development of evidence-based, whole systems management approaches. 2. To examine our ability to influence ecosystems that are behaving in unexpected...

Data from: Legume abundance along successional and rainfall gradients in neotropical forests

Maga Gei, Danaë M. A. Rozendaal, Lourens Poorter, Frans Bongers, Janet I. Sprent, Mira D. Garner, T. Mitchell Aide, José Luis Andrade, Patricia Balvanera, Justin M. Becknell, Pedro H.S. Brancalion, George A. L. Cabral, Ricardo Gomes César, Robin L. Chazdon, Rebecca J. Cole, Gabriel Dalla Colletta, Ben De Jong, Julie S. Denslow, Daisy H. Dent, Saara J. DeWalt, Juan Manuel Dupuy, Sandra M. Durán, Mário Marcos Do Espírito Santo, G. Wilson Fernandes, Yule Roberta Ferreira Nunes … & Jennifer S. Powers
The nutrient demands of regrowing tropical forests are partly satisfied by nitrogen (N)-fixing legume trees, but our understanding of the abundance of those species is biased towards wet tropical regions. Here we show how the abundance of Leguminosae is affected by both recovery from disturbance and large-scale rainfall gradients through a synthesis of forest-inventory plots from a network of 42 Neotropical forest chronosequences. During the first three decades of natural forest regeneration, legume basal area...

Data from: Conservation genetics of the eastern yellow-bellied racer (Coluber constrictor flaviventris) and bullsnake (Pituophis catenifer sayi): river valleys are critical features for snakes at northern range limits

Christopher M. Somers, Carly F. Graham, Jessica A. Martino, Timothy R. Frasier, Stacey L. Lance, Laura E. Gardiner & Ray G. Poulin
On the North American Great Plains, several snake species reach their northern range limit where they rely on sparsely distributed hibernacula located in major river valleys. Independent colonization histories for the river valleys and barriers to gene flow caused by the lack of suitable habitat between them may have produced genetically differentiated snake populations. To test this hypothesis, we used 10 microsatellite loci to examine the population structure of two species of conservation concern in...

Place and Space in Walking Pilgrimage

Ken Wilson

Data from: Spontaneous hybridization and introgression between walleye (Sander vitreus) and sauger (S. canadensis) in two large reservoirs: insights from genotyping-by-sequencing

Carly Graham
Anthropogenic activities may facilitate undesirable hybridization and genomic introgression between fish species. Walleye (Sander vitreus) and sauger (Sander canadensis) are economically valuable freshwater species that can spontaneously hybridize in areas of sympatry. Levels of genomic introgression between walleye and sauger may be increased by modifications to waterbodies (e.g., reservoir development) and inadvertent propagation of hybrids in stocking programs. We used genotyping by sequencing (GBS) to examine 217 fish from two large reservoirs with mixed populations...

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  • University of Regina
  • Brandon University
  • University of Agder
  • Imperial College London
  • Nova Southeastern University
  • National and Kapodistrian University of Athens
  • University of Liverpool
  • University of Alberta
  • University of Georgia
  • McMaster University