78 Works

Argos and GPS data for a polar bear track

Marie Auger-Méthé & Andrew E. Derocher
It is rare to be able to validate state-space models for Argos data. This dataset provides a unique opportunity to do so, because it contains simultaneous Argos and GPS data for a polar bear. The GPS locations are extremely accurate (≤30 m) compared to Argos data, which can have errors as large as 36 km depending on the quality class. The dataset contains one year of movement data, starting on April 20, 2009. The dataset...

Multispecies modelling reveals potential for habitat restoration to re-establish boreal vertebrate community dynamics

Christopher Beirne, Catherine Sun, Erin Tattersall, Joanna Burgar, Jason Fisher & Cole Burton
1. The restoration of habitats degraded by industrial disturbance is essential for achieving conservation objectives in disturbed landscapes. In boreal ecosystems, disturbances from seismic exploration lines and other linear features have adversely affected biodiversity, most notably leading to declines in threatened woodland caribou. Large-scale restoration of disturbed habitats is needed, yet empirical assessments of restoration effectiveness on wildlife communities remain rare. 2. We used 73 camera trap deployments from 2015-2019 and joint species distribution models...

Response of Avian communities to edges of tropical montane forests: Implications for the future of endemic habitat specialists

Jill Jankowski, Keiller Kyle, Matthew Gasner, Anna Ciecka & Kerry Rabenold
Tropical montane landscapes harbor diverse flora and fauna, and many species there are ecological specialists with narrow elevational distributions, limited geographic ranges, and small global populations. Along elevational gradients, environmental conditions and community composition change dramatically over small spatial scales. As forests are disturbed and edges formed with modified habitat, natural communities could be affected differently across elevations by the many physical and biotic changes at edges. We asked whether forest edges produced altered patterns...

Data from: Descriptive multi-agent epidemiology via molecular screening on Atlantic salmon farms in the northeast Pacific Ocean

Andrew Bateman, Angela D. Schulze, Karia H. Kaukinen, Amy Tabata, Gideon Mordecai, Kelsey Flynn, Arthur Bass, Emiliano Di Cicco & Kristina M. Miller
Rapid expansion of salmon aquaculture has resulted in high-density populations that host diverse infectious agents, for which surveillance and monitoring are critical to disease management. Screening can reveal infection diversity from which disease arises, differential patterns of infection in live and dead fish that are difficult to collect in wild populations, and potential risks associated with agent transmission between wild and farmed hosts. We report results from a multi-year infectious-agent screening program of farmed salmon...

Species interactions limit the predictability of community responses to environmental change

Patrick Thompson, Samuel Hürlemann & Florian Altermatt
Predicting how ecological communities respond to environmental change is challenging, but highly relevant in this global change era. Ecologists commonly use current spatial relationships between species and environmental conditions to make predictions about the future. This assumes that species will track conditions by shifting their distributions. However, theory and experimental evidence suggest that species interactions prevent communities from predictably tracking temporal changes in environmental conditions, based on current spatial relationships between species and environmental gradients....

Data from: Genome-wide analysis reveals demographic and life history patterns associated with habitat modification in land-locked, deep-spawning sockeye salmon (Oncorhynchus nerka)

Farida Samad-Zada, Brett Van Poorten, Shannon Harris, Lyse Godbout & Michael Russello
Human-mediated habitat fragmentation in freshwater ecosystems can negatively impact genetic diversity, demography and life history of native biota, while disrupting the behaviour of species that are dependent on spatial connectivity to complete their life cycles. In the Alouette River system (British Columbia, Canada), dam construction in 1928 impacted passage of anadromous sockeye salmon (Oncorhynchus nerka), with the last records of migrants occurring in the 1930’s. Since that time, O. nerka persisted as a resident population...

Protecting the global ocean for biodiversity, food and climate

Enric Sala, Juan Mayorga, Darcy Bradley, Reniel Cabral, Trisha Atwood, Arnaud Auber, William Cheung, Francesco Ferretti, Alan Friedlander, Steven Gaines, Cristina Garilao, Whitney Goodell, Benjamin Halpern, Audra Hinson, Kristin Kaschner, Kathleen Kesner-Reyes, Fabien Leprieur, Jennifer McGowan, Lance Morgan, David Mouillot, Juliano Palacios-Abrantes, Hugh Possingham, Kristin Rechberger, Boris Worm & Jane Lubchenco
The ocean contains unique biodiversity, provides valuable food resources, and is a major sink for anthropogenic carbon. Marine protected areas (MPAs) are an effective tool for restoring ocean biodiversity and ecosystem services but at present only 2.7% of the ocean is highly protected. This low level of ocean protection is due largely to conflicts with fisheries and other extractive uses. To address this issue, here we developed a conservation planning framework to prioritize highly protected...

Sequence alignments of Corallicolids, apicomplexan symbionts of coral

Waldan Kwong
Corals (Metazoa; Cnidaria; Anthozoa) have recently been shown to play host to a widespread and diverse group of intracellular symbionts of the phylum Apicomplexa. These symbionts, colloquially called ‘corallicolids’, are mostly known through molecular analyses, and no formal taxonomy has been proposed. Another apicomplexan, Gemmocystis cylindrus (described from the coral Dendrogyra cylindrus), may be related to corallicolids, but lacks molecular data. Here, we isolate and describe motile trophozoite (feeding) corallicolids cells using microscopic (light, SEM,...

Soil biogeochemistry across Central and South American tropical dry forests

Bonnie Waring, Mark De Guzman, Dan Du, Juan Dupuy, Maga Gei, Jessica Gutknecht, Catherine Hulshof, Nicolas Jelinski, Andrew Margenot, David Medvigy, Camila Pizano, Beatriz Salgado-Negret, Naomi Schwartz, Annette Trierweiler, Skip Van Bloem, German Vargas G & Jennifer Powers
The availability of nitrogen (N) and phosphorus (P) controls the flow of carbon (C) among plants, soils, and the atmosphere, thereby shaping terrestrial ecosystem responses to global change. Soil C, N, and P cycles are linked by drivers operating at multiple spatial and temporal scales: landscape-level variation in macroclimate, seasonality, and soil geochemistry; stand-scale heterogeneity in forest composition and structure; and microbial community dynamics at the soil pore scale. Yet in many biomes, we do...

Type 1 diabetes adolescent transition study

Joseph Leung
Objectives: Adolescents with type 1 diabetes experience dramatic excursions in blood sugars as they transition to adult care. Trials on single interventions have struggled to demonstrate lasting improvements in clinical outcomes. Thus, the purpose of this study was to evaluate the effect of a multi-component intervention on glycemic control, clinic attendance, and diabetes distress amongst adolescents with type 1 diabetes transitioning to adult health services. Design: Prospective controlled quasi-experimental study. Setting: Adolescents with type 1...

Season, anthocyanin supplementation, and flight training have mixed effects on the antioxidant system of migratory European starlings (Sturnus vulgaris)

Abigail Frawley, Kristen J. DeMoranville, Katherine M. Carbeck, Lisa Trost, Amadeusz Bryła, Maciej Dzialo, Edyta T. Sadowska, Ulf Bauchinger, Barbara J. Pierce & Scott McWilliams
Migratory birds engage in two periods of endurance flight annually as they travel between summer breeding and overwintering grounds, and such endurance flights likely incur oxidative costs. These costs may differ between fall and spring migration, especially for females who must prepare for breeding and egg laying in spring. The objective of this study of a migratory bird was to test proposed hypotheses about how key components of the female’s antioxidant system differ in response...

Capture-mark-recapture of Calopteryx exul in 2011

Rassim Khelifa
While climate change severely affects some aquatic ecosystems, it may also interact with anthropogenic factors and exacerbate their impact. In dry climates, dams can cause hydrological drought during dry periods following a great reduction in dam water discharge. However, impact of these severe hydrological droughts on lotic fauna is poorly documented, despite climate change expected to increase drought duration and intensity. We document here how dam water discharge was affected by climate variability during 2011–2018...

Parental population range expansion before secondary contact promotes heterosis

Ailene MacPherson, Silu Wang, Ryo Yamaguchi, Loren Rieseberg & Sarah Otto
Population genomic analysis of hybrid zones is instrumental to our understanding of the evolution of reproductive isolation. Many temperate hybrid zones are formed by the secondary contact between two parental populations that have undergone post-glacial range expansion. Here we show that explicitly accounting for historical parental isolation followed by range expansion prior to secondary contact is fundamental for explaining genetic and fitness patterns in these hybrid zones. Specifically, ancestral population expansion can result in allele...

Growth genes are implicated in the evolutionary divergence of sympatric piscivorous and insectivorous rainbow trout (Oncorhynchus mykiss)

Jared Grummer, Michael Whitlock, Patricia Schulte & Eric Taylor
Identifying ecologically significant phenotypic traits and the genomic mechanisms that underly them are crucial steps in understanding the traits associated with population divergence. We used genome-wide data to identify genomic regions associated with a key trait that distinguishes two ecotypes of rainbow trout (Oncorhynchus mykiss) – insectivores and piscivores – that coexist in Kootenay Lake, southeastern British Columbia, for the non-breeding portion of the year. "Gerrards" are large-bodied (breeding maturity at >60cm) piscivores that spawn...

Data from: Examining the dynamics of Epstein-Barr virus shedding in the tonsils and the impact of HIV-1 coinfection on daily saliva viral loads

Catherine Byrne, Christine Johnston, Jackson Orem, Fred Okuku, Meei-Li Huang, Habibur Rahman, Anna Wald, Lawrence Corey, Joshua Schiffer, Corey Casper, Daniel Coombs & Soren Gantt
Epstein-Barr virus (EBV) is transmitted by saliva and is a major cause of cancer, particularly in people living with HIV/AIDS. Here, we describe the frequency and quantity of EBV detection in the saliva of Ugandan adults with and without HIV-1 infection and use these data to develop a novel mathematical model of EBV infection in the tonsils. Eligible cohort participants were not taking antiviral medications, and those with HIV-1 infection had a CD4 count >200...

Food availability and long-term predation risk interactively affect antipredator response

Shotaro Shiratsuru, Yasmine Majchrzak, Michael Peers, Emily Studd, Allyson Menzies, Rachael Derbyshire, Murray Humphries, Charles Krebs, Dennis Murray & Stan Boutin
Food availability and temporal variation in predation risk are both important determinants of the magnitude of antipredator responses, but their effects have rarely been examined simultaneously, particularly in wild prey. Here, we determine how food availability and long-term predation risk affect antipredator responses to acute predation risk by monitoring the foraging response of free-ranging snowshoe hares (Lepus americanus) to an encounter with a Canada lynx Lynx canadensis) in Yukon, Canada, over 4 winters (from 2015-2016...

Ant predation towards termite and treehopper baits in the Ecuadorian Amazon

Luis Camacho
Animals may develop mutualistic associations with other species, whereby prey offer resources or services in exchange for protection from predators. Alternatively, prey may offer resources or services directly to their would-be predators in exchange for their lives. The latter may be the case of hemipterans that engage in mutualistic interactions with ants by offering a honeydew reward. We test the extent to which a honeydew offering vs. partner recognition may play a role as proximate...

Predation shapes behavioral lateralization: insights from an adaptive radiation of livebearing fish

Kaj Hulthén, Heinen-Kay Justa Lee, Danielle Schmidt & R. Brian Langerhans
Hemispheric brain lateralization can drive the expression of behavioral asymmetry, or laterality, which varies notably both within and among species. To explain these left–right behavioral asymmetries in animals, predator-mediated selection is often invoked. Recent studies have revealed that a relatively high degree of lateralization correlates positively with traits known to confer survival benefits against predators, including escape performance, multitasking abilities, and group coordination. Yet, we still know comparatively little about 1) how consistently predators shape...

Predicting how climate change threatens the prey base of Arctic marine predators

Katie Florko, Travis Tai, William Cheung, Steve Ferguson, U. Rashid Sumaila, David Yurkowski & Marie Auger-Méthé
Arctic sea ice loss has direct consequences for predators. Climate-driven distribution shifts of native and invasive prey species may exacerbate these consequences. We assessed potential changes by modelling the prey base of a widely distributed Arctic predator (ringed seal; Pusa hispida) in a sentinel area for change (Hudson Bay) under high- and low-greenhouse gas emissions scenarios from 1950 to 2100. All changes were relatively negligible under the low-emission scenario, but under the high-emission scenario, we...

Data for: Are immigrants outbred and unrelated? Testing standard assumptions in a wild metapopulation

Lisa Dickel, Peter Arcese, Pirmin Nietlisbach, Lukas Keller & Jane Reid
Immigration into small recipient populations is expected to alleviate inbreeding and increase genetic variation, and hence facilitate population persistence through genetic and/or evolutionary rescue. Such expectations depend on three standard assumptions: that immigrants are outbred, unrelated to existing natives at arrival, and unrelated to each other. These assumptions are rarely explicitly verified, including in key field systems in evolutionary ecology. Yet, they could be violated due to non-random or repeated immigration from adjacent small populations....

Hybridization and the coexistence of species: HZAM-Sym code and data files

Darren Irwin & Dolph Schluter
It is thought that two species can coexist if they use different resources present in the environment, yet this assumes that species are completely reproductively isolated. We model coexistence outcomes for two sympatric species that are ecologically differentiated but have incomplete reproductive isolation. The consequences of interbreeding depend crucially on hybrid fitness. When hybrid fitness is high, just a small rate of hybridization can lead to collapse of two species into one. Low hybrid fitness...

Rock the Boat

Michael Lee, Matthew Smithdeal, Tala Maragha & Susan Cox
Rock the Boat is an open-access multimedia resource designed to provoke dialogue about graduate supervision relationships within universities, and their impact on student and faculty wellbeing. Drawing upon the tradition of Research-based Theatre, Rock the Boat draws attention to graduate supervision as a vital form of pedagogy, and as rife with challenges — especially relating to equity, inclusion and diversity.

Data from: Genome-wide investigation of the multiple origins hypothesis for deep-spawning kokanee salmon (Oncorhynchus nerka) across its pan-Pacific distribution

Farida Samad-Zada, Kouji Nakayama & Michael Russello
Salmonids have emerged as important study systems for investigating molecular processes underlying parallel evolution given their tremendous life history variation. Kokanee, the resident form of anadromous sockeye salmon (Oncorhynchus nerka), have evolved multiple times across the species’ pan-Pacific distribution, exhibiting multiple reproductive ecotypes including those that spawn in streams, on lake-shores, and at lake depths >50 meters. The latter has only been detected in five locations in Japan and British Columbia, Canada. Here, we investigated...

Sheltered Income: Estimating Income Under-Reporting in Canada, 1998 and 2004

Geoffrey Dunbar & Chunling Fu
We use data from the Survey of Financial Security and the Survey of Household Spending to estimate the incidence and extent of income under-reporting in Canada in 1998 and 2004. We estimate that the proportion of households under-reporting income is roughly 35 to 50 per cent in both years. Our estimates also suggest that the amount of under-reported income rose by roughly 40 per cent between 1998 and 2004 and remained stable as a proportion...

Analysis Data for \"Identifying and characterizing pesticide use on 9,000 fields of organic agriculture\"

Ashley Larsen, Sofie McComb, Claire Powers & Sofie McComb
We identify the location of ~9,000 organic fields from 2013 — 2019 using field-level crop and pesticide use data, along with state certification data, for Kern County, CA, one of the US’ most valuable crop producing counties. We parse apart how being organic relative to conventional affects decisions to spray pesticides and, if spraying, how much to spray. We show the expected probability of spraying any pesticides is reduced by about 30 percentage points for...

Registration Year

  • 2021
    78

Resource Types

  • Dataset
    72
  • Text
    4
  • Book
    1
  • Journal Article
    1

Affiliations

  • University of British Columbia
    78
  • Fisheries and Oceans Canada
    6
  • University of Toronto
    5
  • University of Washington
    4
  • University of California, Santa Barbara
    4
  • University of Alberta
    3
  • University of Minnesota
    3
  • Dalhousie University
    3
  • McGill University
    3
  • Simon Fraser University
    3