23 Works

Repeated measure plant community data after fire in boreal forest, Taiga Shield, Northwest Territories, Canada, 1998-2018

Nicola Day, Jennifer Baltzer & Suzanne Carriere
10 transects were established in the years following fire in boreal forest stands on the Taiga Shield, Northwest Territories, Canada in 1998-1999. These were remeasured annually. Six transects were returned to on 2018 for another measurement. At each measurement, we recorded ground covers, species identities, and counted tree stems (seedlings).

Zooplankton and water quality data for 37 lakes in the Gwich'in and Inuvialuit regions of the Northwest Territories

Derek Gray
This dataset includes zooplankton and water quality data from 37 lakes sampled in the Northwest Territories, Canada, from the Dempster and Inuvik-Tuktoyaktuk Highways during July and August of 2017 and 2018. It was collected as part of a project to determine how physicochemical variables affect zooplankton and fish communities in small Arctic lakes.

Data from: Phenotypic plasticity in female mate choice behavior is mediated by an interaction of direct and indirect genetic effects in Drosophila melanogaster

David C. S. Filice & Tristan A. F. Long
Female mate choice is a complex decision-making process that involves many context-dependent factors. In Drosophila melanogaster, a model species for the study of sexual selection, indirect genetic effects (IGEs) of general social interactions can influence female mate choice behaviors, but the potential impacts of IGEs associated with mating experiences are poorly understood. Here, we examined whether the IGEs associated with a previous mating experience had an effect on subsequent female mate choice behaviors and quantified...

Spatial environmental complexity mediates sexual conflict and sexual selection in Drosophila melanogaster

Tristan Long & Heather Malek
Sexual selection is an important agent of evolutionary change, but the strength and direction of selection often vary over space and time. One potential source of heterogeneity may lie in the opportunity for male–male and/or male–female interactions imposed by the spatial environment. It has been suggested that increased spatial complexity permits sexual selection to act in a complementary fashion with natural selection (hastening the loss of deleterious alleles and/or promoting the spread of beneficial alleles)...

Terrestrial lichen data for Northwest Territories, Canada

Jennifer Baltzer, Geneviève Degré-Timmons, Nicola Day, Steve Cumming, Merritt Turetsky & Jill Johnstone
Increased fire activity due to climate change may impact the successional dynamics of boreal forests, with important consequences for caribou habitat. Early successional forests have been shown to support lower quantities of caribou forage lichens, but geographic variation in, and controls on, the rates of lichen recovery have been largely unexplored. In this study, we sampled across a broad region in northwestern Canada to compare lichen biomass accumulation in ecoprovinces, including the Saskatchewan Boreal Shield,...

Data from: Nutritional geometry and fitness consequences in Drosophila suzukii, the Spotted-Wing Drosophila

Yvonne Young, Natasha Buckiewicz & Tristan A. F. Long
Since its arrival to North America less than a decade ago, the invasive Spotted-Wing Drosophila (Drosophila suzukii) has inflicted substantial economic losses on soft fruit agriculture due to its ability to oviposit into ripening fruits. More effective management approaches for this species are needed, but little is known about the factors that influence behavioral choices made by D. suzukii when selecting hosts, or the consequences that their offspring experience when developing in different environments. Using...

Data from: Community-level flammability declines over 25 years of plant invasion in grasslands

Josep Padullés Cubino, Hannah L. Buckley, Nicola J. Day, Robin Pieper & Timothy J. Curran
1. Exotic plant invasions can alter fire regimes in plant communities. Invaders often possess traits that differ from native plants in the community, resulting in increases or declines in community-level flammability, changing fire regimes, and potentially causing long-term modifications to plant community composition. Although considering traits of multiple invaders and native species together is useful to better understand how invasions change community-level flammability, few studies have done this. 2 Measured morphological and flammability traits of...

On the use of private versus social information in oviposition site choice decisions by Drosophila melanogaster females

Tristan Long & Heather Malek
Individuals are faced with decisions throughout their lifetimes, and the choices they make often have important consequences towards their fitness. Being able to discern which available option is best to pursue often incurs sampling costs, which may be largely avoided by copying the behaviour and decisions of others. Although social learning and copying behaviours are widespread, much remains unknown about how effective and adaptive copying behaviour is, as well as the factors that underlie its...

Nutritional developmental history and its consequences for reproductive success in Drosophila suzukii (Diptera: Drosophilidae)

Tristan Long & Yvonne Young
The characteristics of the juvenile developmental environment of an individual can have many important consequences for their adult reproductive success as it may shape the development and expression of phenotypes that are relevant to the later operation of sexual selection. Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) is an economically important invasive pest species that lays its eggs in many types of soft fruits and potentially experiences large intra-population spatial and temporal variation in its nutritional developmental...

Data from: Land-use legacies influence tree water-use efficiency and nitrogen dynamics in recently established European forests

Rossella Guerrieri, Marta Correia, Irene Martín-Forés, Raquel Alfaro-Sánchez, Joan Pino, Arndt Hampe, Fernando Valladares & Josep Espelta
1. Forest regrowth following farmland (agriculture and pasture) abandonment has been positively associated with a number of processes including the regulation of hydrological cycling, the enhancement of soil functioning, and an increase in forest productivity and carbon (C) sequestration. Although these changes in ecosystem functioning post-farmland abandonment have been observed in multiple locations and studies, the ecophysiological basis underpinning these patterns remains unclear. Here, we examine whether increased forest expansion following pastureland abandonment is associated...

Permafrost thaw in boreal peatlands is rapidly altering forest community composition

Jennifer Baltzer, Rajit Patankar, Katherine Dearborn & Cory A. Wallace
Boreal peatlands are frequently underlain by permafrost, which is thawing rapidly. A common ecological response to thaw is the conversion of raised forested plateaus to treeless wetlands, but unexplained spatial variation in responses, combined with a lack of stand-level data, make it difficult to predict future trajectories of boreal forest composition and structure. We sought to characterize patterns and identify drivers of forest structure, composition, mortality, and recruitment in a boreal peatland experiencing permafrost thaw....

Identifying functional impacts of heat-resistant fungi on boreal forest recovery after wildfire

Nicola Day, Steve Cumming, Kari Dunfield, Jill Johnstone, Michelle Mack, Kirsten Reid, Merritt Turetsky, Xanthe Walker & Jennifer Baltzer
Fungi play key roles in carbon (C) dynamics of ecosystems: saprotrophs decompose organic material and return C in the nutrient cycle, and mycorrhizal species support plants that accumulate C through photosynthesis. The identities and functions of extremophile fungi present after fire can influence C dynamics, particularly because plant-fungal relationships are often species-specific. However, little is known about the function and distribution of fungi that survive fires. We aim to assess the distribution of heat-resistant soil...

Littoral macroinvertebrate and water quality data for 32 lakes across the boreal-tundra transition in the Northwest Territories

Derek Gray & Rachel Cohen
This dataset includes macroinvertebrate and water quality data from 32 lakes sampled in the Northwest Territories, Canada, from the Dempster and Inuvik-Tuktoyaktuk Highways during July and August of 2017 and 2018. It was collected as part of a project to determine how physicochemical variables affect macroinvertebrate and fish communities in small Arctic lakes.

Data from: Are flies kind to kin? The role of intra- and inter-sexual relatedness in mediating reproductive conflict

Emily S. Martin & Tristan A. F. Long
As individual success often comes at the expense of others, interactions between the members of a species are frequently antagonistic, especially in the context of reproduction. In theory, this conflict may be reduced in magnitude when kin interact, as cooperative behaviour between relatives can result in increased inclusive fitness. Recent tests of the potential role of cooperative behaviour between brothers in Drosophila melanogaster have proved to be both exciting and controversial. We set out to...

Data from: What makes a multimodal signal attractive? A preference function approach

Kelly L. Ronald, Ruiyu Zeng, David J. White, Esteban Fernández-Juricic & Jeffrey R. Lucas
Courtship signals are often complex and include components within and across sensory modalities. Unfortunately, the evidence for how multimodal signals affect female preference functions is still rather limited. This is an important scientific gap because preference function shape can indicate which male traits are under the strongest selection. We modelled how preference function shape can be altered under 4 scenarios of varying signal content, including both redundant and non-redundant signals. The model was tested with...

Data from: Genetic trade-offs between male reproductive traits in Drosophila melanogaster

David C.S. Filice, Tristan A.F. Long, David C. S. Filice & Tristan A. F. Long
In Drosophila melanogaster, males engage in both extensive pre-and postcopulatory competition for the opportunity to mate with females and subsequently sire offspring. The selection pressure for increased male reproductive success has resulted in the evolution of a wide diversity of sexual traits. However, despite strong selection, individuals often exhibit considerable phenotypic variation in the expression of these traits, and it is unclear if any of this variation is due to underlying genetic trade-offs. Here, using...

Data from: Checkerboard score-area relationships reveal spatial scales of plant community structure

Gordon G. McNickle, Eric G. Lamb, Mike Lavender, , Brandon S. Schamp, Steven D. Siciliano, Richard Condit, Stephen P. Hubbell, Jennifer L. Baltzer & James F Cahill
Identifying the spatial scale at which particular mechanisms influence plant community assembly is crucial to understanding the mechanisms structuring communities. It has long been recognized that many elements of community structure are sensitive to area; however the majority of studies examining patterns of community structure use a single relatively small sampling area. As different assembly mechanisms likely cause patterns at different scales we investigate how plant species co-occurrence patterns change with sampling unit scale. We...

Data from: Cross-generational effects of male reproductive success and offspring immunocompetence in Drosophila melanogaster

Ashley Guncay, Thiropa Balasubramaniam, Katie Plagens, Joel T. Weadge, Tristan A. F. Long, Joel Weadge & Tristan A.F. Long
In some species where males make no direct contribution to a female’s lifetime reproductive success, females choose mates based on the indirect benefits manifested in their offspring. One trait that may be subject to this sexual selection is immunocompetence (the ability to mount an immune response following exposure to pathogens); however, the results of previous work on its link to male attractiveness have been ambiguous. Herein we examine the life history consequences of mating with...

Cuscuta sect. Californicae (Convolvulaceae) revisited: ‘cryptic’ speciation and host range differentiation

Mihai Costea, Hiba ElMiari, Roula Farag, Christopher Fleet & Saša Stefanović
Cuscuta californica complex (sensu lato, s.l.) is a western North American group of species in which the infrastaminal scales are reduced, making the morphological delimitation of species particularly challenging. A revision of this group was prompted by the discovery of an apparent new species from central California based primarily on molecular means. Prompted by this finding, the morphological limits of C. californica s.l. species were comprehensively re-evaluated through a morphometric study. DNA sequences from plastid...

Which physicochemical variables should zooplankton ecologists measure when they conduct field studies?

Derek Gray, Mariam Elmarsafy, Jasmina Vucic, Matthew Teillet, Thomas Pretty, Rachel Cohen & Mercedes Huynh
Over the last century, a rich literature has developed describing how the physical and chemical environment influences zooplankton communities, but there is little guidance on the suite of limnological variables that should be measured by zooplankton ecologists. We performed a literature review to assess: 1) Which variables were measured most often by zooplankton ecologists; 2) Which of these variables were consistently related to zooplankton abundance and richness; and 3) Whether key variables were overlooked by...

Environmental drivers of Sphagnum growth in peatlands across the Holarctic region

Fia Bengtsson, Håkan Rydin, Jennifer Baltzer, Luca Bragazza, Zhao-Jun Bu, Simon Caporn, Ellen Dorrepaal, Kjell Ivar Flatberg, Olga Galanina, Mariusz Gałka, Anna Ganeva, Irina Goia, Nadezhda Goncharova, Michal Hajek, Akira Haraguchi, Lorna Harris, Elyn Humphreys, Martin Jiroušek, Katarzyna Kajukało, Edgar Karofeld, Natalia Koronatova, Natalia Kosykh, Anna Laine, Mariusz Lamentowicz, Elena Lapshina … & Richard J. Payne
The relative importance of global versus local environmental factors for growth and thus carbon uptake of the bryophyte genus Sphagnum – the main peat-former and ecosystem engineer in northern peatlands – remains unclear. 2) We measured length growth and net primary production (NPP) of two abundant Sphagnum species across 99 Holarctic peatlands. We tested the importance of previously proposed abiotic and biotic drivers for peatland carbon uptake (climate, N deposition, water table depth, and vascular...

Vascular plant community data for Northwest Territories, Canada

Jennifer Baltzer, Nicola Day, Alison White, Kirsten Reid, Geneviève Degré-Timmons, Steve Cumming, Michelle Mack, Merritt Turetsky, Xanthe Walker & Jill Johnstone
Climate change is altering disturbance regimes outside of historical norms, which can impact biodiversity by selecting for plants with particular traits. The relative impact of disturbance characteristics on plant traits and community structure may be mediated by environmental gradients. We aimed to understand how wildfire impacted understory plant communities and plant regeneration strategies along gradients of environmental conditions and wildfire characteristics in boreal forests. We established 207 plots (60m2) in recently burned stands and 133...

Data from: Spontaneous forest regrowth in South-West Europe: consequences for nature’s contributions to people

Irene Martín-Forés, Sandra Magro, Andres Bravo-Oviedo, Raquel Alfaro-Sánchez, Josep M. Espelta, Theresa Frei, Elena Valdés-Correcher, Carmen Rodríguez Fernández-Blanco, Georg Winkel, Gabriel Gerzabek, Arndt Hampe & Fernando Valladares
Context European forests are expanding and becoming denser following the widespread abandonment of farmland and rural areas. Yet, little is known about the goods and services that spontaneous forest regrowth provide to people. Aims We assessed the changes in nature’s contributions to people (NCP) from spontaneous forest regrowth, i.e. forest expansion and densification, in South-West Europe. Methods We investigated 65 forest plots in four different landscapes with contrasting ecological and societal contexts. Two landscapes are...

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  • 2015

Resource Types

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  • Wilfrid Laurier University
  • Auckland University of Technology
  • Northern Arizona University
  • National Research Institute for Agriculture, Food and Environment
  • University of Adelaide
  • University of Saskatchewan
  • University of Alberta
  • University of Alaska Fairbanks
  • Purdue University
  • University of Colorado Boulder