Donald A. Jackson
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View article: Seasonal interplay of discharge and phosphorus concentration: Year-round areal loads to western basin Lake Ontario from urban and urbanizing tributaries
Seasonal interplay of discharge and phosphorus concentration: Year-round areal loads to western basin Lake Ontario from urban and urbanizing tributaries Open
View article: Road salt pollution shifts urban stormwater ponds toward cyanobacterial dominance
Road salt pollution shifts urban stormwater ponds toward cyanobacterial dominance Open
Urban environments contend with an array of stressors, including salinization by deicing road salts. To advance understanding of how road salt pollution affects aquatic ecosystem functioning, we surveyed primary producers in 50 stormwater …
View article: Designing Sortable Guilds for Multispecies Selective Fish Passage
Designing Sortable Guilds for Multispecies Selective Fish Passage Open
The importance of connectivity for freshwater organisms is widely recognised, yet in‐stream barriers associated with population declines and increased risk of extinction remain globally ubiquitous. Despite their negative consequences, thes…
View article: Water quality patterns in at-risk fish habitat: Assessing frequency and cumulative duration of chloride guideline exceedance during early life stages of an endangered fish
Water quality patterns in at-risk fish habitat: Assessing frequency and cumulative duration of chloride guideline exceedance during early life stages of an endangered fish Open
A comprehensive understanding of the impact of contaminants on organisms requires consideration of magnitude, duration, frequency, and life-history stage of exposure. Government guidelines provide a benchmark to evaluate exposure magnitude…
View article: Cascading consequences of shifting ice phenology in an exploited lake
Cascading consequences of shifting ice phenology in an exploited lake Open
Ice phenology (onset and breakup of ice cover) regulates the timings of seasonal life history events of many animal and plant species in high-latitude lakes in the Northern Hemisphere, promoting the coexistence of species that share resour…
View article: Ecosystem functions and services in urban stormwater ponds: Co‐producing knowledge for better management
Ecosystem functions and services in urban stormwater ponds: Co‐producing knowledge for better management Open
Urban stormwater management ponds (SWMPs) are widely employed for stormwater control, but knowledge about their contributions to urban ecosystem function and service delivery remains unclear. We organized a workshop that brought together r…
View article: Explaining variation in stream fish productivity with biotic and abiotic variables across wadeable rivers in eastern North America
Explaining variation in stream fish productivity with biotic and abiotic variables across wadeable rivers in eastern North America Open
Biomass production is a key ecosystem process that provides insight into ecological processes such as growth, reproduction, mortality, and energy distribution. Previous studies have considered various fish response measures such as species…
View article: Temporal variations of the multifaceted biodiversity and assembly mechanisms in lake fish assemblages
Temporal variations of the multifaceted biodiversity and assembly mechanisms in lake fish assemblages Open
Understanding long‐term changes in fish diversity and community assembly rules is crucial for freshwater conservation. Growing evidence indicates that studying functional and phylogenetic diversity beyond purely taxonomic considerations ca…
View article: Temporal change in urban fish biodiversity—Gains, losses, and drivers of change
Temporal change in urban fish biodiversity—Gains, losses, and drivers of change Open
Our aim was to examine temporal change in alpha and beta diversity of freshwater fish communities in rivers that have urbanized over the same period to understand the influence of changes in land use and river connectivity on community cha…
View article: Salinization, warming, and loss of water clarity inhibit vertical mixing of small urban ponds
Salinization, warming, and loss of water clarity inhibit vertical mixing of small urban ponds Open
Urbanization drives multiple environmental changes that influence critical ecosystem processes. Factors such as salinization by deicing road salts, reduced water clarity (and greater light attenuation) from eutrophication and sediment load…
View article: Can fish species co-occurrence patterns be predicted by their trait dissimilarities?
Can fish species co-occurrence patterns be predicted by their trait dissimilarities? Open
Trait-based analyses have been successful in determining and predicting species association outcomes in diverse communities. Most studies have limited the scope of this approach to the biotic responses of a small number of species or geogr…
View article: From headwaters to receiving waters: river dynamics in an increasingly urban world
From headwaters to receiving waters: river dynamics in an increasingly urban world Open
Rivers historically played, and continue to play, a fundamental role in supporting humanity through provisioning numerous resources and services.Through time, research has aimed at understanding rivers through hydrological, geomorphologica…
View article: Evaluating four fish-based indices of biotic integrity for similar measures of ecological condition
Evaluating four fish-based indices of biotic integrity for similar measures of ecological condition Open
While the use and development of biological indices for management and planning purposes has increased in popularity over the past few decades, many of their properties are rarely evaluated. Using stream fish community data from numerous w…
View article: Predicting riverine fish production using empirical models and the metabolic theory of ecology
Predicting riverine fish production using empirical models and the metabolic theory of ecology Open
Fish production integrates many different measures of community performance, such as abundance, biomass, growth, and reproduction, into one valuable quantitative metric but requires resource intensive data for empirical estimation. While p…
View article: Data from: Salinization, warming, and loss of water clarity inhibit vertical mixing of small urban ponds
Data from: Salinization, warming, and loss of water clarity inhibit vertical mixing of small urban ponds Open
Code and data for characterizing water column mixing regimes in ponds and comparing the influence of maximum salinity, surface temperature, Secchi depth, maximum depth, and surface area by generalized linear regression.Pond_mixing_regime_p…
View article: Depth and temperature drive patterns of spatial overlap among fish thermal guilds in lakes across Ontario, Canada
Depth and temperature drive patterns of spatial overlap among fish thermal guilds in lakes across Ontario, Canada Open
Aim The spatial distribution of ectotherms is strongly dependent on the temperature of their environments. In temperate lakes, fishes with different thermal optima can become spatially segregated during summer stratification. This habitat …
View article: Biodiversity patterns diverge along geographic temperature gradients
Biodiversity patterns diverge along geographic temperature gradients Open
Models applying space‐for‐time substitution, including those projecting ecological responses to climate change, generally assume an elevational and latitudinal equivalence that is rarely tested. However, a mismatch may lead to different ca…
View article: Size spectrum model reveals importance of considering species interactions in a freshwater fisheries management context
Size spectrum model reveals importance of considering species interactions in a freshwater fisheries management context Open
Inland fisheries have a significant cultural and economic value around the globe, providing dietary protein, income, and recreation. Consequently, methods for monitoring and managing these important fisheries are continually being refined.…
View article: Somers-and-Jackson-Mantel-manuscript
Somers-and-Jackson-Mantel-manuscript Open
Readme files are provided for each uploaded file. Note that file names with a number at the end are copies of individual worksheets from the larger Excel file. These individual worksheets are saved in both .xlsx and .csv formats. The .csv …
View article: Bioregions are predominantly climatic for fishes of northern lakes
Bioregions are predominantly climatic for fishes of northern lakes Open
Aim Recurrent species assemblages integrate important biotic interactions and joint responses to environmental and spatial filters that enable local coexistence. Here, we applied a bipartite (site–species) network approach to develop a nat…
View article: Science to support Canada’s SARA-listed freshwater species
Science to support Canada’s SARA-listed freshwater species Open
View article: Partitioning fish communities into guilds for ecological analyses: an overview of current approaches and future directions
Partitioning fish communities into guilds for ecological analyses: an overview of current approaches and future directions Open
A major strength of the guild approach is its ability to simplify community analysis by aggregating species with similar roles or functions into groups. These groups can be used to study a number of important ecological concepts, including…
View article: Salty summertime streams—road salt contaminated watersheds and estimates of the proportion of impacted species
Salty summertime streams—road salt contaminated watersheds and estimates of the proportion of impacted species Open
Road salt runoff is a leading cause of secondary freshwater salinization in north temperate climates. Increased chloride concentrations in freshwater can be toxic and lead to changes in organismal behavior, lethality, biotic homogenization…
View article: Shifting Trophic Control of Fishery–Ecosystem Dynamics Following Biological Invasions
Shifting Trophic Control of Fishery–Ecosystem Dynamics Following Biological Invasions Open
Nonnative species often interact with native species in unexpected ways, posing threats to conservation of biodiversity and ecosystem services. Synthesizing 30 years of extensive ecosystem monitoring data, we show how two pervasive invasiv…
View article: Shifting trophic control of fishery–ecosystem dynamics following biological invasions
Shifting trophic control of fishery–ecosystem dynamics following biological invasions Open
Increasing human population size and mobility have accelerated the translocation of nonnative species globally, which has become a major threat to conservation of biodiversity and ecosystem services. Introduced species can disrupt species …
View article: Fishing down then up the food web of an invaded lake
Fishing down then up the food web of an invaded lake Open
Significance Fishing down the food web occurs in oceans when the mean trophic level (MTL) of the fisheries’ catch declines over time. Such a trend arises if fisheries successively deplete higher-trophic level species like top predators, mo…
View article: Species‐pair associations, null models, and tests of mechanisms structuring ecological communities
Species‐pair associations, null models, and tests of mechanisms structuring ecological communities Open
Biotic interactions and niche processes are fundamental determinants of community structure and species co‐occurrence. Most studies of species co‐occurrence have focused on negative association patterns (segregation presumed to arise from …
View article: Linking the ball‐and‐cup analogy and ordination trajectories to describe ecosystem stability, resistance, and resilience
Linking the ball‐and‐cup analogy and ordination trajectories to describe ecosystem stability, resistance, and resilience Open
The ball‐and‐cup diagram for conceptualizing ecosystem stability, resistance, and resilience is often presented as a ball rolling around within and between two or more cups. This analogy has a long history in ecology and has been used to i…
View article: Functional diversity and redundancy of freshwater fish communities across biogeographic and environmental gradients
Functional diversity and redundancy of freshwater fish communities across biogeographic and environmental gradients Open
Aim Functional redundancy occurs when species share overlapping ecological functions and is considered an important component of ecosystem resilience. However, much of what we know about functional redundancy comes from relatively species‐…
View article: Assessing the impacts of imperfect detection on estimates of diversity and community structure through multispecies occupancy modeling
Assessing the impacts of imperfect detection on estimates of diversity and community structure through multispecies occupancy modeling Open
Detecting all species in a given survey is challenging, regardless of sampling effort. This issue, more commonly known as imperfect detection, can have negative impacts on data quality and interpretation, most notably leading to false abse…