36 Works

Geographical variation in the trait-based assembly patterns of multitrophic invertebrate communities

Diane S. Srivastava, A. Andrew M. MacDonald, Valério D. Pillar, Pavel Kratina, Vanderlei J. Debastiani, Laura Melissa Guzman, M. Kurtis Trzcinski, Olivier Dézerald, Ignacio M. Barberis, Paula M. De Omena, Gustavo Q. Romero, Fabiola Ospina Bautista, Nicholas A. C. Marino, Céline Leroy, Vinicius F. Farjalla, Barbara A. Richardson, Ana Z. Gonçalves, Bruno Corbara, Jana S. Petermann, Michael J. Richardson, Michael C. Melnychuk, Merlijn Jocqué, Jacqueline T. Ngai, Stanislas Talaga, Gustavo C. O. Piccoli … & Régis Céréghino
It has been argued that the mechanisms structuring ecological communities may be more generalizable when based on traits than on species identities. If so, patterns in the assembly of community-level traits along environmental gradients should be similar in different places in the world. Alternatively, geographic change in the species pool and regional variation in climate might result in site-specific relationships between community traits and local environments. These competing hypotheses are particularly untested for animal communities....

Genomic changes underlying repeated niche shifts in an adaptive radiation

David A. Marques, Felicity C. Jones, Federica Di Palma, David M. Kingsley & Thomas E. Reimchen
In adaptive radiations, single lineages rapidly diversify by adapting to many new niches. Little is known yet about the genomic mechanisms involved, i.e. the source of genetic variation or genomic architecture facilitating or constraining adaptive radiation. Here, we investigate genomic changes associated with repeated invasion of many different freshwater niches by threespine stickleback in the Haida Gwaii archipelago, Canada, by re-sequencing single genomes from one marine and 28 freshwater populations. We find 89 likely targets...

Vegetation, Bryophytes, Lichens, Environment, and Stand Dynamics in Forests of the Swan Valley, Montana

Bruce McCune & Joseph A. Antos
We sampled vegetation, bryophytes, lichens, environment, and stand dynamics in 56 plots in the Swan Valley, Montana in 1975-1978. The data include complete inventory of trees in 375 m2 plots, with whole-plot ocular estimates of plant cover by species, transect sampling of the ground layer bryophytes and lichens with microplots, and point-based sampling of epiphytic bryophytes and lichens on tree trunks. Stand age and forest history were inferred by increment boring. Canopy density was measured...

Frontline Workers and the Role of Legal and Regulatory Intermediaries (LIEPP Working Paper, n°94)

Garry Gray & Jerome Pelisse
The paper deals with legal intermediaries, as two streams of research apprehend and define them in recent and dynamic works. One, rooted in political science, studies regulatory intermediaries (LeviFaur et al., 2017; Bes, 2019), as actors between regulators and regulated, whereas the other, rooted in the Law and Society field and sociology, analyses legal intermediaries (Edelman, 2016; Talesh and Pélisse, 2019 ; Billows and alii 2019), as a broader and more bottom up category describing...

sj-docx-1-joh-10.1177_00207314221134040 - Supplemental material for Is Neoliberalism Killing Us? A Cross Sectional Study of the Impact of Neoliberal Beliefs on Health and Social Wellbeing in the Midst of the COVID-19 Pandemic

Kiffer G. Card & Kirk J. Hepburn
Supplemental material, sj-docx-1-joh-10.1177_00207314221134040 for Is Neoliberalism Killing Us? A Cross Sectional Study of the Impact of Neoliberal Beliefs on Health and Social Wellbeing in the Midst of the COVID-19 Pandemic by Kiffer G. Card and Kirk J. Hepburn in International Journal of Health Services

The Revised Identification of Seniors At Risk screening tool predicts readmission in older hospitalized patients: a cohort study

Jane McCusker, Rebecca N. Warburton, Sylvie D. Lambert, Eric Belzile & Manon de Raad
Abstract Background The Identification of Seniors at Risk (ISAR) screening tool is a widely-used risk stratification tool for older adults in the emergency department (ED). Few studies have investigated the use of ISAR to predict outcomes of hospitalized patients. To improve usability a revised version of ISAR (ISAR-R), was developed in a quality improvement project. The ISAR-R is also widely used, although never formally validated. To address these two gaps in knowledge, we aimed to...

Characterizing phenotypic diversity in marine populations of the threespine stickleback

Ainsley L. Fraser & Rana El-Sabaawi
The threespine stickleback (Gasterosteus aculeatus) is an important model for studying the evolution of vertebrate morphology. Sticklebacks inhabit freshwater, brackish, and marine northern hemisphere waters. Anadromous and marine populations (hereafter marine) are assumed to have remained unchanged morphologically from ancestral marine sticklebacks, despite marine environments varying on regional and local scales. Recent studies suggest that genetic and phenotypic structure exists in marine populations, yet the scale of this variation, and its ecological causes remain unclear....

The genomic consistency of the loss of anadromy in an Arctic fish (Salvelinus alpinus)

Sarah Salisbury, Gregory McCracken, Robert Perry, Donald Keefe, Kara Layton, Tony Kess, Cameron Nugent, Jong Leong, Ian Bradbury, Ben Koop, Moira Ferguson & Daniel Ruzzante
The potentially significant genetic consequences associated with the loss of migratory capacity of diadromous fishes which have become landlocked in freshwater are poorly understood. Consistent selective pressures associated with freshwater residency may drive repeated differentiation both between allopatric landlocked and anadromous populations and within landlocked populations (resulting in sympatric morphs). Alternatively, the strong genetic drift anticipated in isolated landlocked populations could hinder consistent adaptation, limiting genetic parallelism. Understanding the degree of genetic parallelism underlying differentiation...

Tropicalization of temperate reef fish communities facilitated by urchin grazing and diversity of thermal affinities

Jasmin Schuster, Rick Stuart-Smith, Graham Edgar & Amanda Bates
Aim: Global declines in structurally complex habitats are reshaping both land and seascapes in directions that affect biological communities’ responses to warming. Here, we test whether widespread loss of kelp habitats through sea urchin overgrazing systematically changes sensitivity of fish communities to warming. Location: Global temperate latitudes Time period: Modern Major taxa studied: Fishes Methods: Community thermal affinity shifts related to habitat were assessed by simulating and comparing fish communities from 2,271 surveys across 15...

Hybrid evolution repeats itself across environmental contexts in Texas sunflowers (Helianthus)

Nora Mitchell, Hoang Luu, Gregory Owens, Loren Rieseberg & Kenneth Whitney
To what extent is evolution repeatable? Little is known about whether the evolution of hybrids is more (or less) repeatable than non-hybrids. We used field experimental evolution in annual sunflowers (Helianthus) in Texas to ask the extent to which hybrid evolution is repeatable across environments compared to non-hybrid controls. We created hybrids between Helianthus annuus (L.) and H. debilis (Nutt.) and grew plots of both hybrids and non-hybrid controls through eight generations at three sites...

Life stage and taxonomy the most important factors determining vertebrate stoichiometry: A meta-analysis

Emily May & Rana El Sabaawi
1. Whole-body elemental composition is a key trait for determining how organisms influence their ecosystems. Using mass-balance, ecological stoichiometry predicts that animals with higher concentrations of element X will selectively retain more X and will recycle less X in their waste than animals with lower X concentrations. These animals will also store high quantities of X during their lives and after their deaths (prior to full decomposition). 2. Vertebrates may uniquely impact nutrient cycling because...

Is Neoliberalism Killing Us? A Cross Sectional Study of the Impact of Neoliberal Beliefs on Health and Social Wellbeing in the Midst of the COVID-19 Pandemic

Kiffer G. Card & Kirk J. Hepburn
Neoliberal ideology is linked to poorer collective health and well-being. At the individual level, however, neoliberal beliefs may actually promote self-efficacy, self-esteem, and self-reliance. We examined the effects of three beliefs underlying neoliberalism—(a) Personal Wherewithal, (b) Natural Competition, and (c) Anti-Government Interference—to understand the unique pathways by which neoliberalism affects health and well-being at the individual level. Participants were recruited using paid advertisements on social media in May/June 2020. Multivariable regression identified associations between each...

Additional file 1 of PrEP-related stigma and PrEP use among gay, bisexual and other men who have sex with men in Ontario and British Columbia, Canada

Oscar Javier Pico-Espinosa, Mark Hull, Paul MacPherson, Daniel Grace, Mark Gaspar, Nathan Lachowsky, Saira Mohammed, James Demers, Marshall Kilduff, Robinson Truong & Darrell H. S. Tan
Supplementary Figures and Tables.

The Revised Identification of Seniors At Risk screening tool predicts readmission in older hospitalized patients: a cohort study

Jane McCusker, Rebecca N. Warburton, Sylvie D. Lambert, Eric Belzile & Manon de Raad
Abstract Background The Identification of Seniors at Risk (ISAR) screening tool is a widely-used risk stratification tool for older adults in the emergency department (ED). Few studies have investigated the use of ISAR to predict outcomes of hospitalized patients. To improve usability a revised version of ISAR (ISAR-R), was developed in a quality improvement project. The ISAR-R is also widely used, although never formally validated. To address these two gaps in knowledge, we aimed to...

Collection: CTD and oxygen sensor data from Ocean Networks Canada observatory sites at Folger Passage and Cascadia Basin from 2009-2022

This collection contains datasets produced by Ocean Networks Canada between 2009-10 to 2022-01 from the Folger Deep, Folger Pinnacle, and ODP 1026 instrument platforms within the Folger Passage and Cascadia Basin NEPTUNE observatories, used in the publication “Pacific Region MPA Ocean Health Report'' by Minicola, E., and Juniper, S.K. (2022). Folger Passage and Cascadia Basin fall within a Rockfish Conservation Area and a section of the pending Offshore Pacific Marine Protected Area (MPA), respectively. This...

Behavioral “bycatch” from camera trap surveys yields insights on prey responses to human-mediated predation risk

Cole Burton, Christopher Beirne, Catherine Sun, Alys Granados, Michael Procko, Cheng Chen, Mitchell Fennell, Alexia Constantinou, Christopher Colton, Katie Tjaden-McClement, Jason Fisher & Joanna Burgar
Human disturbance directly affects animal populations but indirect effects of disturbance on species behaviors are less well understood. Camera traps provide an opportunity to investigate variation in animal behaviors across gradients of disturbance. We used camera trap data to test predictions about predator-sensitive behavior in three ungulate species (caribou Rangifer tarandus; white-tailed deer, Odocoileus virginianus; moose, Alces alces) across two boreal forest landscapes varying in disturbance. We quantified behavior as the number of camera trap...

Google Earth Model of the southern Alisitos Arc crustal section, Baja California

Rebecca Morris, Sarah Medynski, Susan DeBari & Cathy Busby

Eocene Terrane Accretion in Northern Cascadia Recorded by Brittle Left-lateral Slip on the San Juan Fault

Nicolas Harrichhausen, Kristin Morell, Christine Regalla, Emerson Lynch & Lucinda Leonard
The San Juan fault, on southern Vancouver Island, Canada, juxtaposes the oceanic Wrangellia and Pacific Rim terranes in the northern Cascadia forearc, and has been suggested to play a role in multiple Mesozoic--Cenozoic terrane accretion events. However, direct observations of the San Juan fault's kinematics have not been documented and its exact role in accommodating strain arising from terrane accretion is unknown. To test if, how, and when the San Juan fault accommodated accretion-related strain,...

PrEP-related stigma and PrEP use among gay, bisexual and other men who have sex with men in Ontario and British Columbia, Canada

Oscar Javier Pico-Espinosa, Mark Hull, Paul MacPherson, Daniel Grace, Mark Gaspar, Nathan Lachowsky, Saira Mohammed, James Demers, Marshall Kilduff, Robinson Truong & Darrell H. S. Tan
Abstract Background We aimed to explore the association between PrEP-related stereotypes and perceived disapproval (hereafter PrEP-related stigma), and PrEP use. Methods We used data from a cross-sectional online survey among adult gay, bisexual, other men who have sex with men in Ontario and British Columbia, Canada. Participants were recruited 2019–2020 in-person from sexual health clinics and outreach programs, and online through dating mobile applications and websites. We used logistic regression models to explore the relationship...

Assembled transcriptome from multiple individuals of Leukoma staminea (Pacific littleneck clam) of gill and digestive gland tissues.

Monique R. Raap, Helen J. Gurney-Smith, Sarah E. Dudas, Christopher M. Pearce, Ben J. Sutherland & Ben F. Koop
A transcriptome that was assembled from RNA-seq data using the program Trinity after quality trimming with Trimmomatic. Multiple clams and tissues were used to assemble the transcriptome.

Assembled transcriptome from multiple individuals of Leukoma staminea (Pacific littleneck clam) of gill and digestive gland tissues.

Monique R. Raap, Helen J. Gurney-Smith, Sarah E. Dudas, Christopher M. Pearce, Ben J. Sutherland & Ben F. Koop
A transcriptome that was assembled from RNA-seq data using the program Trinity after quality trimming with Trimmomatic. Multiple clams and tissues were used to assemble the transcriptome.

A highly divergent Wolbachia with a tiny genome in an insect-parasitic tylenchid nematode

Jan Dudzic, Caitlin Curtis, Brent Gowen & Steve Perlman
Wolbachia symbionts are the most successful host-associated microbes on the planet, infecting arthropods and nematodes. Their role in nematodes is particularly enigmatic, with filarial nematode species either 100% infected and dependent on symbionts for reproduction and development, or not at all infected. We have discovered a highly divergent strain of Wolbachia in an insect-parasitic tylenchid nematode, Howardula sp., in a nematode clade that has not previously been known to harbour Wolbachia. While this nematode is...

HECYRA, ADELPHOE, AND THE FUNERAL GAMES OF L. AEMILIUS PAULLUS

Justin Dwyer
A Journal of Ancient Theatre

sj-docx-1-joh-10.1177_00207314221134040 - Supplemental material for Is Neoliberalism Killing Us? A Cross Sectional Study of the Impact of Neoliberal Beliefs on Health and Social Wellbeing in the Midst of the COVID-19 Pandemic

Kiffer G. Card & Kirk J. Hepburn
Supplemental material, sj-docx-1-joh-10.1177_00207314221134040 for Is Neoliberalism Killing Us? A Cross Sectional Study of the Impact of Neoliberal Beliefs on Health and Social Wellbeing in the Midst of the COVID-19 Pandemic by Kiffer G. Card and Kirk J. Hepburn in International Journal of Health Services

Is Neoliberalism Killing Us? A Cross Sectional Study of the Impact of Neoliberal Beliefs on Health and Social Wellbeing in the Midst of the COVID-19 Pandemic

Kiffer G. Card & Kirk J. Hepburn
Neoliberal ideology is linked to poorer collective health and well-being. At the individual level, however, neoliberal beliefs may actually promote self-efficacy, self-esteem, and self-reliance. We examined the effects of three beliefs underlying neoliberalism—(a) Personal Wherewithal, (b) Natural Competition, and (c) Anti-Government Interference—to understand the unique pathways by which neoliberalism affects health and well-being at the individual level. Participants were recruited using paid advertisements on social media in May/June 2020. Multivariable regression identified associations between each...

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