29 Works

Data from: Balancing food acquisition and predation risk drives demographic changes in snowshoe hare population cycles

Yasmine Majchrzak
Snowshoe hare cycles are one of the most prominent phenomena in ecology. Experimental studies point to predation as the dominant driving factor, but previous experiments combining food supplementation and predator removal produced unexplained multiplicative effects on density. We examined the potential interactive effects of food limitation and predation in causing hare cycles using an individual based food-supplementation experiment over-winter across three cycle phases that naturally varied in predation risk. Supplementation doubled over-winter survival with the...

Data from: Positron-emitting radiotracers spatially resolve unexpected biogeochemical relationships linked with methane oxidation in Arctic soils

Michael Schmidt, Steven Mamet, Curtis Senger, Alixandra Schebel, Mitsuaki Ota, Tony Tian, Umair Aziz, Lisa Stein, Tom Regier, Kevin Stanley, Derek Peak & Steven Siciliano
Arctic soils are marked by cryoturbic features, which impact soil-atmosphere methane (CH4) dynamics vital to global climate regulation. Cryoturbic diapirism alters C/N chemistry within frost boils by introducing soluble organic carbon and nutrients, potentially influencing microbial CH4 oxidation. CH4 oxidation in soils, however, requires a spatio-temporal convergence of ecological factors to occur. Spatial delineation of microbial activity with respect to these key microbial and biogeochemical factors at relevant scales is experimentally challenging in inherently complex...

Data from: Watershed classification predicts streamflow regime and organic carbon dynamics in the Northeast Pacific Coastal Temperate Rainforest

Ian Giesbrecht, Suzanne Tank, Gordon Frazer, Eran Hood, Santiago Gonzalez Arriola, David Butman, Dave D'Amore, David Hutchinson, Allison Bidlack & Ken Lertzman
Watershed classification has long been a key tool in the hydrological sciences, but few studies have been extended to biogeochemistry. We developed a combined hydro-biogeochemical classification for watersheds draining to the coastal margin of the Northeast Pacific coastal temperate rainforest (1,443,062 km2), including 2,695 small coastal rivers (SCR) and 10 large continental watersheds. We used cluster analysis to group SCR watersheds into 12 types, based on watershed properties. The most important variables for distinguishing SCR...

Data from: Ontogeny and evolution of the elasmosaurid neck highlight a greater diversity of Antarctic plesiosaurians

Arthur S. Brum, Tiago R. Simões, Geovane A. Souza, André E. P. Pinheiro, Rodrigo G. Figueiredo, Michael W. Caldwell, Juliana M. Sayão & Alexander W. A. Kellner
The Antarctic plesiosaurian record is critical for understanding the evolution of elasmosaurids in the southern hemisphere. Elasmosaurids exhibit some of the most remarkable modifications of the vertebrate axial skeleton given their extreme elongation of the cervical region. Despite a considerable amount of information available on vertebral counts within Plesiosauria throughout the decades, we have a considerably more limited understanding of the diversity of cervical vertebral shapes in elasmosaurids and how these have changed throughout ontogeny...

Grey Literature citation and inclusion rates in gambling review articles: Opportunities for improvement

David Baxter
Commercial gambling is expanding in many countries worldwide, and researchers and governments are increasingly approaching gambling as a public health issue. Grey literature is a popular avenue for disseminating findings from gambling studies, accounting for over 20% of gambling research publications. As evidence-based policy decisions increasingly rely on systematic and scoping reviews, it is important that grey literature evidence is included in these reviews. To date, two umbrella review has assessed systematic reviews for gambling-related...

Data from: Above- and belowground drivers of intraspecific trait variability across subcontinental gradients for five ubiquitous forest plants in North America

Isabelle Aubin, Françoise Cardou, Alison Munson, Madhur Anand, André Arsenault, F. Wayne Bell, Yves Bergeron, Isabelle Boulangeat, Sylvain Delagrange, Nicole J. Fenton, Dominique Gravel, François Hébert, Jill Johnstone, S. Ellen Macdonald, Azim Mallik, Anne C.S. McIntosh, Jennie R. McLaren, Christian Messier, Dave Morris, Bill Shipley, Luc Sirois, Nelson Thiffault, Laura Boisvert-Marsh & Bright B. Kumordzi
Intraspecific trait variability (ITV) provides the material for species adaptation to environmental changes. To advance our understanding of how ITV can contribute to species adaptation to a wide range of environmental conditions, we studied five widespread understory forest species exposed to both continental-scale climate gradients, and local soil and disturbance gradients. We investigated the environmental drivers of between-site leaf and root trait variation, and tested whether higher between-site ITV was associated with increased trait sensitivity...

Changes in the direction of the diversity-productivity relationship over fifteen years of stand development in a planted temperate forest

Tanvir Ahmed Shovon, Stephanie Kang, Michael Scherer-Lorenzen & Charles A Nock
Experiments manipulating diversity in both forests and grasslands have often observed a positive diversity-productivity relationship (DPR) which tends to strengthen during plant community development. This pattern is generally attributed to an increase in niche complementarity or facilitation. Most analyses do not examine species dominance and density, which also change over time. Moreover, how neighbourhood scale interactions among tree species affect the DPR is not well understood. We analysed growth and mortality data from the Simplex...

Genetic variation in leaf traits and gas exchange response to vapor pressure deficit in two contrasting conifer species

Xiaojing Wei, Andy Benowicz, Jaime Sebastian-Azcona & Barbara Thomas
1. Mechanistically predicting the evolutionary response of tree species to climate change requires an understanding of genetic variation in relevant traits. Here we compared the phenotypic and genetic variation in the Leaf Economics Spectrum (LES) traits and the response of gas exchange to vapor pressure deficit (VPD) in lodgepole pine (Pico) and white spruce (Pigl), an early and a late successional species dominating the boreal forests of western Canada. 2. We measured gas exchange, foliar...

Data from: Predicting multi-predator risk to elk (Cervus canadensis) in summer using predator scats

Kara MacAulay, Eric Spilker, Jodi Berg, Mark Hebblewhite & Evelyn Merrill
1. There is growing evidence that prey perceive the risk of predation and alter their behaviour in response, resulting in changes in spatial distribution and potential fitness consequences. Previous approaches to mapping predation risk across a landscape quantify predator space use to estimate potential predator-prey encounters, yet this approach does not account for successful predator attack resulting in prey mortality. An exception is a prey kill site that reflects an encounter resulting in mortality, but...

Discussions of the not-so-fit: how ableism limits diverse thought and investigative potential in evolutionary biology

Amanda N. Klingler, Haley A. Branch, Kelsey J. R. P. Byers, Aaron Panofsky & Danielle Peers
Evolutionary biology and many of its foundational concepts are grounded in a history of ableism and eugenics. The field has not made a concerted effort to divest our concepts and investigative tools from this fraught history and as a result, an ableist investigative lens has persisted into present-day evolutionary research, limiting the scope of research and harming the ability to communicate and synthesize knowledge about evolutionary processes. This failure to divest from our eugenicist and...

Uniformity of electroelastic field within a three-phase anisotropic piezoelectric elliptical inhomogeneity in anti-plane shear

X. Wang & P. Schiavone
Using the Stroh quartic formalism, we prove that the internal electroelastic field is unconditionally uniform inside a three-phase anisotropic piezoelectric elliptical inhomogeneity with two confocal elliptical interfaces when the surrounding matrix is subjected to uniform remote anti-plane mechanical and in-plane electrical loading. The inhomogeneity and the matrix comprise monoclinic piezoelectric materials with symmetry plane at x3 = 0 and with poling in the x3-direction; the intermediate interphase layer is a transversely isotropic piezoelectric material with...

A WSN ARCHITECTURE FOR BUILDING RESILIENT, REACTIVE AND SECURE WIRELESS SENSING SYSTEMS

Paweł Gburzyński

Living Languages – Lenguas Vivas – Línguas Vivas: Joining efforts towards language revitalization

Luiz A. Amaral, Gabriela Pérez Báez & Jorge Emilio Rosés Labrada

Data from “Exploring Next Generation Grey” including Questionnaire and Results

Joachim Schopfel, Dominic Farace, David Baxter, Silvia Giannini, ANNA MOLINO, Tomas A. Lipinski, Veronika Potočnik & Dobrica Savic
The GL2021 Conference offered the many and diverse communities of practice in the field of grey literature a unique opportunity to collaborate in addressing and defining the next phase in the digital transformation of grey literature. In preparation for this conference, a panel session on the future of grey literature was planned on the program; and, in advance, an online survey was carried out among GreyNet’s own community of practice in the field of grey...

Supporting CT Data for: Two exceptionally preserved juvenile specimens of Gorgosaurus libratus (Tyrannosauridae, Albertosaurinae) provide new insight into the timing of ontogenetic changes in tyrannosaurids

Jared Voris, Darla Zelenitsky, Francois Therrien, Ryan Ridgely, Philip Currie & Lawrence Witmer
Known from dozens of specimens discovered since the early 20th century, Gorgosaurus libratus has arguably contributed more than any other taxon to our understanding of the life history of tyrannosaurids. However, juvenile material for this taxon is rare. Here, we describe two small, articulated Gorgosaurus specimens (skull lengths of ~500 mm) that help advance our knowledge of the anatomy and ontogeny of this taxon and of tyrannosaurids in general. The new specimens exhibit hallmark juvenile...

Getting to know our biomonitor neighbours: urban lichens and allied fungi of Edmonton, Alberta, Canada: Phylogenetic Datasets

Diane Haughland, Alessandra Hood, Darcie Thauvette, Sydney Toni, Ming Cao, Joseph Birch, Joshua Wasyliw, Laura Hjartarson, Mary Villeneuve, Arynn Stordock, David Fielder, Megan Lewis, David Evans, Dominik Royko, Rashell Bolduc, Hayley Webster, Jeremy Singh, Kristen Schafer, Hanna Davidson & Catherine Shier
Here we provide one of the first detailed studies of lichen and allied fungi diversity in a continental North American city (Edmonton, Alberta, Canada), including an annotated checklist, images of all species, dichotomous keys, and local distribution maps. Edmonton is the northernmost city in North America with a population of over one million, and an industrial and transportation gateway for much of northern Canada. Lichen-based biomonitoring could be a tool to track airborne pollutants resulting...

Information on marine management policies for invasive lionfish in the Western Atlantic Ocean and Mediterranean Sea

Allison C. Candelmo, Aylin Ulman, Fadilah Z. Ali, Stephen R. Gittings, Summer R. Huber, Lauryn E. Magno, Kaylin R. Clements, Burak Ali Çiçek, Jennifer K. Chapman, Fabian C. Kyne, Michel Bariche, Kimani Kitson-Walters, Francesco Tiralongo, Demetris Kletou, Taner Yildiz, Nir Stern, Sara A.A. Al Mabruk, Mohammed Adel, Nejmeddine Bradai, Shevy B.S. Rothman, Vasileios Minasidis, Stephanie J. Green, Jennifer N. Solomon, Holden E. Harris, Philip E. Karp … & James V Hart
The invasion of lionfish (Pterois volitans and P. miles) in the Western Atlantic is perhaps the best studied marine fish invasion to date; meanwhile another lionfish invasion is rapidly evolving in the Mediterranean. We reviewed lionfish management policies from several decades in the Western Atlantic to suggest policy recommendations for the Mediterranean. These strategic recommendations are synthesized in our corresponding manuscript titled: “Lessons from the Western Atlantic lionfish invasion can inform policy and management strategies...

Interspecific differences in root foraging precision cannot be directly inferred from species' mycorrhizal status or fine root economics

Pavlína Stiblíková, Adam Klimeš, James Cahill, Tomáš Koubek & Martin Weiser
Nutrient acquisition in plants can be represented by a suite of intercorrelated root traits such as root diameter, nitrogen content, root tissue density, and specific root length. However, it is unclear how a plant's ability to precisely forage for nutrients in a heterogeneous soil environment (i.e., the precision of placing roots into nutrient-rich areas) relates to these traits. Mycorrhizal symbiosis also affects the relationship between the fine root traits and root foraging precision because fungal...

Collaboration for conservation: assessing country-wide carnivore occupancy dynamics from sparse data

Leanne Van Der Weyde, Mathias Tobler, Marie Charlotte Gielen, Gabriele Cozzi, Florian Weise, Tempe Adams, Dominik Bauer, Emily Bennitt, Matthew Bowles, Alienor Brassine, Femke Broekhuis, Michael Chase, Kai Collins, Genevieve Finerty, Krystyna Golabek, Robyn Hartley, Steve Henley, Jessica Isden, Derek Keeping, Kristina Kesch, Rebecca Klein, Morulaganyi Kokole, Robynne Kotze, Eric LeFlore, Glyn Maude … & Michael Flyman
Aim: Assessing the distribution and persistence of species across their range is a crucial component of wildlife conservation. It demands data at adequate spatial scales and over extended periods of time, which may only be obtained through collaborative efforts, and the development of methods that integrate heterogeneous datasets. We aimed to combine existing data on large carnivores to evaluate population dynamics and improve knowledge on their distribution nationwide. Location: Botswana Methods: Between 2010 – 2016,...

Data from: imageseg: An R package for deep learning-based image segmentation

Jürgen Niedballa, Jan Axtner, Timm Döbert, Andrew Tilker, An Nguyen, Seth Wong, Christian Fiderer, Marco Heurich & Andreas Wilting
1. Convolutional neural networks (CNNs) and deep learning are powerful and robust tools for ecological applications, and are particularly suited for image data. Image segmentation (the classification of all pixels in images) is one such application and can for example be used to assess forest structural metrics. While CNN-based image segmentation methods for such applications have been suggested, widespread adoption in ecological research has been slow, likely due to technical difficulties in implementation of CNNs...

Pre-service and In-services Teachers Perspectives on Academic Success: More than Just A Grade

Lauren D Goegan, Amanda I. Radil, Andrew Brooks & Lia M. Daniels
Students are constantly bombarded with messages about academic success and the importance of getting good grades. However, definitions of academic success are more complex than a letter grade. Many indicators to define academic success extend primarily from students’ perspectives and ignore how teachers’ definitions of success. This is an oversight as teachers’ perspectives on academic success shape their students’ perspectives on academic success for years to come, and thus represent an important voice to be...

Mammals adjust diel activity across gradients of urbanization

Travis Gallo, Mason Fidino, Brian Gerber, Adam Ahlers, Julia Angstmann, Max Amaya, Amy Concilio, David Drake, Danielle Gray, Elizabeth Lehrer, Maureen Murray, Travis Ryan, Colleen St. Clair, Carmen Salsbury, Heather Sander, Theodore Stankowich, Jaque Williamson, Amy Belaire, Kelly Simone & Seth Magle
Time is a fundamental component of ecological processes. How animal behavior changes over time has been explored through well-known ecological theories like niche partitioning and predator-prey dynamics. Yet, changes in animal behavior within the shorter 24-hour light-dark cycle have largely gone unstudied. Understanding if an animal can adjust their temporal activity to mitigate or adapt to environmental change has become a recent topic of discussion and is important for effective wildlife management and conservation. While...

Data from: Late Cretaceous European theropod palaeobiodiversity, palaeobiogeography and the intra-Maastrichtian faunal turnover: new contributions from the Iberian fossil site of Laño

Erik Isasmendi, Angelica Torices, José Ignacio Canudo, Philip Currie & Xabier Pereda Suberbiola
A total of 227 theropod teeth have so far been recovered from the late Campanian Laño site (northern Iberian Peninsula). The teeth were studied for their qualitative and quantitative features. From the theropod sample found at Laño, seven morphotypes attributed to five taxa are identified: a medium to large abelisaurid (Arcovenator sp.) and four small coelurosaurians (Dromaeosauridae indet., Paraves indet., cf. Paronychodon sp. and cf. Richardoestesia sp.). Together with the ground bird Gargantuavis and a...

A global review of carbonatite-hosted fluid inclusions and the role of fluid release on carbonatite magma ascent

Benjamin Florian Walter , Johannes Giebel , Matthew Steele-MacInnis , Michael Marks , Jochen Kolb & Gregor Markl
Carbonatites crystallize from mantle-derived carbonate- and volatile-rich melts that exsolve large amounts of fluids during their ascent through and emplacement into the crust. A global review of available fluid inclusion data for carbonatitic systems from variable emplacement depths identified four types of fluid inclusions: (type-I) vapour-poor H2O-NaCl fluids with <50 wt.% salinity; (type-II) vapour-rich H2O-NaCl-CO2 fluids with <5 wt.% salinity; (type-III) multi-component fluids with high salinity without CO2; and (type-IV) multi-component fluids with high salinity...

Starting the recycling engine: how far back in time can we fingerprint crust in Earth’s mantle?

Sebastian Tappe , Katie A. Smart & Richard A. Stern
The nature of the tectonic processes that shaped the early Earth remain unresolved, hampered not only by the sparse Early Archaean crustal rock record, but also by the dearth of tangible mantle samples (e.g., xenoliths and diamonds) older than 3 Ga. Investigating the Archaean mantle provides a complementary foil to the knowledge gleaned from the early Earth crust, and can be used to trace the onset of crustal recycling, but also to evaluate the secular...

Registration Year

  • 2022
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Affiliations

  • University of Alberta
    29
  • Agricultural Research Service
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  • Canadian Light Source (Canada)
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  • University of Massachusetts Amherst
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  • University of Montana
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  • California State University, Long Beach
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  • University of the Free State
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  • University of Washington
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  • Eastern Mediterranean University
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  • The Nature Conservancy
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