18 Works

Data from: Dispersal mode mediates the effect of patch size and patch connectivity on metacommunity diversity

Natalie T. Jones, Rachel M. Germain, Tess N. Grainger, Aaron Hall, Lyn Baldwin, Benjamin Gilbert & Aaron M. Hall
1. Metacommunity theory predicts that increasing patch size and patch connectivity can alter local species diversity by affecting either colonization rates, extinction rates or both. Although species’ dispersal abilities or ‘dispersal mode’ (e.g. gravity-, wind- or animal-dispersed seeds) can mediate the effects of patch size and connectivity on diversity, these important factors are frequently overlooked in empirical metacommunity work. 2. We use a natural metacommunity of aspen stands within a grassland matrix to determine whether...

Data from: Genotyping-in-Thousands by sequencing reveals marked population structure in Western Rattlesnakes to inform conservation status

Danielle Schmidt, Purnima Govindarajulu, Karl Larsen & Michael Russello
Delineation of units below the species level is critical for prioritizing conservation actions for species at-risk. Genetic studies play an important role in characterizing patterns of population connectivity and diversity to inform the designation of conservation units, especially for populations that are geographically isolated. The northernmost range margin of Western Rattlesnakes (Crotalus oreganus) occurs in British Columbia, Canada, where it is federally classified as threatened and restricted to five geographic regions. In these areas, Western...

Kinetic evaluation and assessment of longitudinal changes in reference region and extracerebral [18F]MK-6240 PET uptake

Jessie Fanglu Fu, Cristina Lois, Justin Sanchez, J Alex Becker, Zoe B Rubinstein, Emma Thibault, Andrew N Salvatore, Hasan Sari, Michelle E Farrell, Nicolas J. Guehl, Marc D Normandin, Georges El Fakhri, Keith A Johnson & Julie C Price
[18F]MK-6240 meningeal/extracerebral off-target binding may impact tau quantification. We examined the kinetics and longitudinal changes of extracerebral and reference regions. [18F]MK-6240 PET was performed in 24 cognitively-normal and eight cognitively-impaired subjects, with arterial samples in 13 subjects. Follow-up scans at 6.1 ± 0.5 (n = 25) and 13.3 ± 0.9 (n = 16) months were acquired. Extracerebral and reference region (cerebellar gray matter (CerGM)-based, cerebral white matter (WM), pons) uptake were evaluated using standardized uptake...

Not a melting pot: plant species aggregate in their non-native range

Gisela C. Stotz, James F. Cahill, Jonathan A. Bennett, Cameron N. Carlyle, Edward W. Bork, Diana Askarizadeh, Sandor Bartha, Carl Beierkuhnlein, Bazartseren Boldgiv, Leslie Brown, Marcelo Cabido, Giandiego Campetella, Stefano Chelli, Ofer Cohen, Sandra Díaz, Lucas Enrico, David Ensing, Batdelger Erdenetsetseg, Alessandra Fidelis, Heath W. Garris, Hugh A.L. Henry, Anke Jentsch, Mohammad Hassan Jouri, Kadri Koorem, Peter Manning … & Lauchlan H. Fraser
Aim: Plant species continue to be moved outside of their native range by human activities. Here, we aim at determining whether, once introduced, plants assimilate into native communities, or whether they aggregate, thus forming mosaics of native- and alien-rich communities. Alien species may aggregate in their non-native range due to shared habitat preferences, such as their tendency to establish in high-biomass, species-poor areas. Location: 22 herbaceous grasslands in 14 countries, mainly in the temperate zone....

Data from: Extra-pair offspring are less heterozygous than within-pair offspring in American redstarts (Setophaga ruticilla)

Adrianne Hajdasz, Ann E. McKellar, Laurene M. Ratcliffe, Peter T. Boag, Peter P. Marra & Matthew W. Reudink
The vast majority of bird species are socially monogamous; however, extra-pair paternity is nearly ubiquitous and a number of theories have been proposed to explain the prevalence of this mixed mating strategy. Here, we test the genetic compatibility hypothesis—the idea that females that are genetically similar to their social partners will mate with extra-pair males that are genetically dissimilar to produce offspring that are more heterozygous. For this study, we examined eight years of paternity...

Mendt & Gosselin 2021 Depleted energy reserves and early benthic phase mortality

Shannon Mendt & Louis Gosselin
Insufficient energy reserves are widely considered to be a primary factor contributing to high rates of early benthic phase mortality among benthic marine invertebrates, but this hypothesis has been based mostly on indirect, observational evidence, and remains largely untested. We therefore examined the role of initial energy reserves in regulating survivorship and growth during the early benthic phase. Recently settled or hatched individuals of six invertebrate species were collected from natural populations, maintained without food,...

Worldwide evidence of a unimodal relationship between productivity and plant species richness

Lauchlan H. Fraser, Jason Pither, Anke Jentsch, Marcelo Sternberg, Martin Zobel, Diana Askarizadeh, Sandor Bartha, Carl Beierkuhnlein, Jonathan A. Bennett, Alex Bittel, Bazartseren Boldgiv, Ilsi I. Boldrini, Edward Bork, Leslie Brown, Marcelo Cabido, James Cahill, Cameron N. Carlyle, Giandiego Campetella, Stefano Chelli, Ofer Cohen, Anna-Maria Csergo, Sandra Diaz, Lucas Enrico, David Ensing, Alessandra Fidelis … & Szilárd Szentes
The search for predictions of species diversity across environmental gradients has challenged ecologists for decades. The humped-back model (HBM) suggests that plant diversity peaks at intermediate productivity; at low productivity few species can tolerate the environmental stresses, and at high productivity a few highly competitive species dominate. Over time the HBM has become increasingly controversial, and recent studies claim to have refuted it. Here, by using data from coordinated surveys conducted throughout grasslands worldwide and...

Datasets relating (i) A wetland fish multimetric index to variation in agricultural stress among Laurentian Great Lakes coastal wetlands, (ii) Cyanobacteria biomass to total phosphorus concentrations among Canadian lakes

Jabed Tomal & Jan Ciborowski
We present two datasets of biological responses against environmental stresses. In the first dataset, the biological response and environmental stress variables are fish multimetric index of community health and agricultural stress, respectively, in watersheds draining to Laurentian Great Lakes. In the second dataset, the biological response and environmental stress variables are cyanobacterial biomass and total phosphorus, respectively, in Canadian Lakes.

Evolution of moult-migration is directly linked to aridity of the breeding grounds in North American passerines

Claudie Pageau, Christopher Tonra, Mateen Shaikh, Nancy Flood, Matthew Reudink, Christopher M. Tonra, Nancy J. Flood & Matthew W. Reudink
To avoid energy allocation conflicts, birds generally separate breeding, migration and moult during the annual cycle. North American passerines typically moult on the breeding grounds prior to autumn migration. However, some have evolved a moult-migration strategy in which they delay moult until stopping over during autumn migration. Rohwer et al . (2005) proposed the ‘push–pull hypothesis' as an explanation for the evolution of this moult strategy, but it has not been empirically tested. Poor conditions...

sj-pdf-1-jcb-10.1177_0271678X221142139 - Supplemental material for Kinetic evaluation and assessment of longitudinal changes in reference region and extracerebral [18F]MK-6240 PET uptake

Jessie Fanglu Fu, Cristina Lois, Justin Sanchez, J Alex Becker, Zoe B Rubinstein, Emma Thibault, Andrew N Salvatore, Hasan Sari, Michelle E Farrell, Nicolas J. Guehl, Marc D Normandin, Georges El Fakhri, Keith A Johnson & Julie C Price
Supplemental material, sj-pdf-1-jcb-10.1177_0271678X221142139 for Kinetic evaluation and assessment of longitudinal changes in reference region and extracerebral [18F]MK-6240 PET uptake by Jessie Fanglu Fu, Cristina Lois, Justin Sanchez, J Alex Becker, Zoe B Rubinstein, Emma Thibault, Andrew N Salvatore, Hasan Sari, Michelle E Farrell, Nicolas J. Guehl, Marc D Normandin, Georges El Fakhri, Keith A Johnson and Julie C Price in Journal of Cerebral Blood Flow & Metabolism

sj-pdf-1-jcb-10.1177_0271678X221142139 - Supplemental material for Kinetic evaluation and assessment of longitudinal changes in reference region and extracerebral [18F]MK-6240 PET uptake

Jessie Fanglu Fu, Cristina Lois, Justin Sanchez, J Alex Becker, Zoe B Rubinstein, Emma Thibault, Andrew N Salvatore, Hasan Sari, Michelle E Farrell, Nicolas J. Guehl, Marc D Normandin, Georges El Fakhri, Keith A Johnson & Julie C Price
Supplemental material, sj-pdf-1-jcb-10.1177_0271678X221142139 for Kinetic evaluation and assessment of longitudinal changes in reference region and extracerebral [18F]MK-6240 PET uptake by Jessie Fanglu Fu, Cristina Lois, Justin Sanchez, J Alex Becker, Zoe B Rubinstein, Emma Thibault, Andrew N Salvatore, Hasan Sari, Michelle E Farrell, Nicolas J. Guehl, Marc D Normandin, Georges El Fakhri, Keith A Johnson and Julie C Price in Journal of Cerebral Blood Flow & Metabolism

Data from: Short-term microbial effects of a large-scale mine-tailing storage facility collapse on the local natural environment

Heath W. Garris, Susan A. Baldwin, Jon Taylor, David B. Gurr, Daniel R. Denesiuk, Jonathan D. Van Hamme & Lauchlan H. Fraser
We investigated the impacts of the Mount Polley tailings impoundment failure on chemical, physical, and microbial properties of substrates within the affected watershed, comprised of 70 hectares of riparian wetlands and 40 km of stream and lake shore. We established a biomonitoring network in October of 2014, two months following the disturbance, and evaluated riparian and wetland substrates for microbial community composition and function via 16S and full metagenome sequencing. A total of 234 samples...

Data from: Temperate grassland songbird species accumulate incrementally along a gradient of primary productivity

William L. Harrower, Diane S. Srivastava, Roy Turkington & Lauchlan H. Fraser
Global analyses of bird communities along elevation gradients suggest that bird diversity on arid mountains is primarily limited by water availability, not temperature or altitude. However, the mechanism by which water availability, and subsequently primary productivity, increases bird diversity is still unclear. Here we evaluate two possible mechanisms from species-energy theory. The more individuals hypothesis proposes that a higher availability of resources increases the total number of individuals that can be supported, and therefore the...

Evolution of altitudinal migration in passerines is linked to diet

Claudie Pageau, Mariana M. Vale, Marcio Argollo De Menezes, Luciana Barçante, Mateen Shaikh, Maria Alice Alves & Matthew W. Reudink
Bird migration is typically associated with a latitudinal movement from north to south and vice versa. However, many bird species migrate seasonally with an upslope or downslope movement in a process termed altitudinal migration. Globally, 830 of the 6579 Passeriformes species are considered altitudinal migrants and this pattern has emerged multiple times across 77 families of this order. Recent work has indicated an association between altitudinal migration and diet, but none have looked at diet...

Data from: Implications of acute temperature and salinity tolerance thresholds for the persistence of intertidal invertebrate populations experiencing climate change

Brianna Iwabuchi & Louis Gosselin
To predict whether populations of marine animals will persist in the face of changing climate conditions, it is informative to understand how past climate conditions have shaped present-day tolerance thresholds. We examined 4 species of intertidal invertebrates (Nucella lamellosa, Littorina scutulata, Littorina sitkana and Balanus glandula) inhabiting the coasts of Vancouver Island, Canada, where the east coast experiences historically warmer sea surface temperature (SST), warmer low tide (i.e. emersion) rock surface temperature (RST), and lower...

Mountain Bluebird Colour and Temperature Data

Matthew Reudink
Birds exhibit a vast array of colours and ornaments and while much work has focused on understanding the function and evolution of carotenoid- based colours (red, orange, yellow), structural colouration (blue, green, purple, iridescent) can also play a key role in sexual signaling. Several studies have examined how factors such age may influence structural colour, however few studies have looked at how structural colour may be influenced by environmental conditions such as variation in weather...

Evolution of winter moulting strategies in European and North American migratory passerines

Claudie Pageau, Jared Sonnleitner, Christopher M. Tonra, Mateen Shaikh & Matthew W. Reudink
Moult is critical for birds as it replaces damaged feathers and worn plumage, enhancing flight performance, thermoregulation, and communication. In passerines, moult generally occurs on the breeding grounds during the post-breeding period once a year. However, some species of migrant passerines that breed in the Nearctic and western Palearctic regions have evolved different moulting strategies that involve moulting on the overwintering grounds. Some species forego moult on the breeding grounds and instead complete their prebasic...

Kinetic evaluation and assessment of longitudinal changes in reference region and extracerebral [18F]MK-6240 PET uptake

Jessie Fanglu Fu, Cristina Lois, Justin Sanchez, J Alex Becker, Zoe B Rubinstein, Emma Thibault, Andrew N Salvatore, Hasan Sari, Michelle E Farrell, Nicolas J. Guehl, Marc D Normandin, Georges El Fakhri, Keith A Johnson & Julie C Price
[18F]MK-6240 meningeal/extracerebral off-target binding may impact tau quantification. We examined the kinetics and longitudinal changes of extracerebral and reference regions. [18F]MK-6240 PET was performed in 24 cognitively-normal and eight cognitively-impaired subjects, with arterial samples in 13 subjects. Follow-up scans at 6.1 ± 0.5 (n = 25) and 13.3 ± 0.9 (n = 16) months were acquired. Extracerebral and reference region (cerebellar gray matter (CerGM)-based, cerebral white matter (WM), pons) uptake were evaluated using standardized uptake...

Registration Year

  • 2022
    4
  • 2021
    4
  • 2020
    4
  • 2019
    2
  • 2018
    1
  • 2017
    1
  • 2015
    2

Resource Types

  • Dataset
    14
  • Collection
    2
  • Text
    2

Affiliations

  • Thompson Rivers University
    18
  • University of British Columbia
    4
  • Harvard University
    4
  • University of Camerino
    2
  • Islamic Azad University
    2
  • Sao Paulo State University
    2
  • University of Pretoria
    2
  • The Ohio State University
    2
  • Free University of Bozen-Bolzano
    2
  • University of Alberta
    2