A5084720915- Fish Ecology and Management Studies
- Hydrology and Sediment Transport Processes
- Freshwater macroinvertebrate diversity and ecology
- Aquatic Invertebrate Ecology and Behavior
- Hydrology and Watershed Management Studies
- Ecology and biodiversity studies
- Fish biology, ecology, and behavior
- Fish Biology and Ecology Studies
- Wildlife Ecology and Conservation
- Marine and fisheries research
- Soil and Water Nutrient Dynamics
- Physiological and biochemical adaptations
- Environmental DNA in Biodiversity Studies
- Isotope Analysis in Ecology
- Marine animal studies overview
- Escherichia coli research studies
- Iron Metabolism and Disorders
- Ecosystem dynamics and resilience
- earthquake and tectonic studies
- Simulation-Based Education in Healthcare
- Climate Change and Health Impacts
- Integrated Water Resources Management
- Forecasting Techniques and Applications
- Patient Safety and Medication Errors
- Flood Risk Assessment and Management
Ministry of Natural Resources and Forestry
2013-2024
Trent University
2013-2024
Monroe Carell Jr. Children's Hospital
2022
Vanderbilt University Medical Center
2022
Children's Healthcare of Atlanta
2019
Emory University
2019
University of the West of England
2014
Moss Landing Marine Laboratories
2011
University of Alberta
2003
Lakes and rivers are intimately connected in an alternating series of lentic lotic reaches many regions. The study lakes their outlets hierarchical branching river networks has not gained the attention stream ecologists, little effort been focused on synthesizing ecology lake–stream interactions within a drainage network. Rapid predictable changes ecological characteristics streams occur at interface with lakes. influence that lake might have is dependent its position stream, type size, size...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 443:217-235 (2011) - DOI: https://doi.org/10.3354/meps09408 Active acoustic examination of diving behavior murres foraging on patchy prey Kelly J. Benoit-Bird1,*, Kathy Kuletz2, Scott Heppell3, Nathan Jones4, Brian Hoover4 1College Oceanic and Atmospheric Sciences, Oregon State University, 104 COAS...
The availability of suitable thermal habitat for fishes in streams is influenced by several factors, including flow, channel morphology, riparian vegetation, and land use. This study examined the influence air temperature groundwater discharge, predictors stream temperature, on diversity (cold-, cool-, warm-water preferences) fish communities southern Ontario watersheds. Site-level sampling data were used to assess 43 quaternary watersheds using three metrics, proportion sites within a...
Abstract Although dams have impounded the majority of world's altered watercourses, there is a growing awareness importance mitigating or reversing some negative effects on aquatic ecosystems and related services they provide. We used an ecosystem approach, including detailed studies hydrology, geomorphology, invertebrates, fish, food web dynamics river by waterpower production natural flowing to assess system responses change in flow regime (specifically ramping rate flow). was significant...
Abstract Data from Lake Ontario tributaries were used to evaluate the efficacy of single‐pass backpack electric fishing for stream fish monitoring by: testing relationship between catch‐per‐unit‐effort (CPUE) and multiple‐pass‐based population estimates; comparing species richness estimates derived multiple‐pass data assessing concordance assemblage patterns described using data. Significant correlations calculated CPUE removal‐based total catch, 15 species, six taxonomic families, five...
ABSTRACT Philosophically, the natural flow regime concept is tremendously appealing; however, its application can be challenging for many biologists without expertise or resources to handle such approaches on their own. This particularly true hydropeaking rivers, where incorporating sometimes challenging. Additional challenges include our limited understanding of how individual components relate geomorphic and ecological processes. Supplementary environmental that rivers are ecologically two...
Summary 1. We review some of the classic literature on geomorphology and ecology streams in an effort to examine how theoretical developments these aquatic sciences have influenced way fresh flowing waters are classified. Our aim was provide a historical examination conceptual related fluvial classification, discuss implications for conservation planning resource management. 2. Periods influences can be separated into three overlapping phases each distinguished by theoretical, analytical or...
ABSTRACT Daily fluctuating flows in regulated rivers can lead to extensive areas of substrate that experience drying and wetting. I investigated the longitudinal lateral patterns benthic invertebrates peaking Magpie River neighbouring natural rivers. Nearly half all collected originated from upstream reservoir. Both lentic lotic invertebrates, however, decreased abundance levels 5–8 km downstream. Closest dam, were twice as abundant those found In Diptera, Ephemeroptera, Coleoptera...
Fish have evolved traits and life history characteristics that enable them to survive, exploit depend on the flow regime of rivers, particularly timing predictability flows for spawning rearing their young. It is unclear what degree pulsed from hydropower facilities other environmental variables influence migratory behaviours. We used Dual Frequency Identification Sonar in Michipicoten River, Canada, address relationship between fish migration factors with a focus magnitude fluctuation. In...
Abstract The lack of geographically broad‐scale temperature data has limited our ability to classify stream temperatures and assess the processes affecting them. Continuous (1 July 2005–30 June 2006) from 90 sites throughout Great Lakes Basin (GLB) were used model thermal regimes streams in Ontario. Existing newly developed metrics characterize for each site. clustered into three based on maximum weekly (°C) spring rate change (°C · d −1 ). centroids regime 1, 2 3 had 26.4, 28.4, 23.5°C...
Shiga toxin-producing Escherichia coli (STEC) infections are leading causes of pediatric acute renal failure. Identifying hemolytic uremic syndrome (HUS) risk factors is needed to guide care.We conducted a multicenter, historical cohort study identify features associated with development HUS (primary outcome) and need for replacement therapy (RRT) (secondary in STEC-infected children without at initial presentation. Children aged <18 years who submitted STEC-positive specimens between...
Abstract To date, monitoring of the status provincially threatened redside dace Clinostomus elongatus in Ontario has been ad hoc or incidental to other sampling programs. We evaluated efficacy single‐pass backpack electrofishing without block nets detect dace, provide an index abundance, and characterize size‐class distributions. also examined whether a rapid stream habitat assessment method was suitable for condition at sites. Based on 40 sites across 7 Lake tributaries, catch data length...
Deviation from a river's natural flow regime is considered to be one of the most serious and continuing threats lotic ecosystems. Peaking hydroelectric facilities, which are designed adjust level power generation in accordance with hourly energy demand, can dramatically alter flows temperatures ultimately lead changes quantity quality habitat available fish. In this study, we examine spatial distribution river fishes, benthic invertebrates organic matter along lateral longitudinal gradients...
Abstract Abiotic and biotic impacts below impoundments within the context of River Continuum (RCC) Serial Discontinuity Concepts (SDC) have been focus many lotic studies. Recovery gradients, however, are rarely examined in sufficient detail dams. Further refinement understanding needed to inform science river managers about regulated ecology. In this study, we examine longitudinal patterns abiotic characteristics two rivers Northern Canada. We also spatial on natural rivers: a lake outlet...
Hydroelectric facilities can dramatically alter the quantity and quality of fish habitat; however it is not well known how these habitat changes affect growth life history fish. We examine slimy sculpin (Cottus cognatus), a small-bodied sedentary, benthic stream fish, in two regulated eight unregulated tributaries Lake Superior, Canada. Among rivers, we found that grew faster Magpie River than nearby systems, whereas Michipicoten was intermediate. Sculpin were also better condition natural...
Abstract Understanding and characterizing thermal regimes is gaining popularity, but there has been little assessment of the sources magnitudes uncertainty among different metrics. how quantity data influence estimates metrics characterization regime critical to resource management. We examine record length on estimation for commonly used including mean annual maximum minimum, timing temperature range, weekly temperature, July maximum, range. selected 19 sites from U.S. Geological Survey...
Landscape characteristics in combination with the physical structure of branched stream networks define environmental conditions available for lotic biota. From simple network “laws” can emerge a spatially explicit understanding habitat heterogeneity. Based on geographic information system analyses, we explore how integrate spatial heterogeneity landscape and form new as segments accumulate into progressively larger drainages these changes relate to confluence symmetry ratio drainage size....
Few fish habitat compensation projects are assessed with respect to the principle of "no net loss" productive capacity. Using reference streams as standards against which gains and losses functions (e.g., production fish) could be quantified, we examined effectiveness a 3.4-km artificial stream in Northwest Territories, Canada. The restored watershed connectivity, allowing migration provided spawning nursery habitat, particularly for Arctic grayling (Thymallus arcticus). However, average...
Abstract The ability of coldwater species and populations to respond temperature increases associated with climate change will depend on the existing adaptive potential within among populations. Brook trout Salvelinus fontinalis is a valued that has been widely stocked across its native range as well extensively introduced in western North America. We investigated thermal tolerance three primary brook hatchery strains used Ontario (Dickson Lake, Lake Nipigon, Hill's strains) subspecies,...
Summary Anadromous fishes are well known to shape the structure and function of recipient ecosystems by introducing nutrients rich organic matter from ocean. In contrast, importance potamodromous migrations, confined freshwater, subsidies they provide stream has received much less attention. Our objective was determine excretion, eggs, milt, carcasses as nutrient energy sources a large population (82 449 suckers) migrating longnose ( Catostomus catostomus ) common white commersonii suckers...
Extremes of flow and patterns variability limit the distribution abundance riverine species via a natural disturbance regime. Using habitat template approach, we describe characteristics regimes in Canada based on severity flows, predictability, variability. Bayesian clustering was used to group 888 gauged watersheds across into 10 classes. Some classes were found all provinces, whereas others showed greater regional grouping related land physiography (e.g., Canadian Shield ecozones)....
Abstract This study assessed the applicability of an existing methodology to classify different stream sites into coldwater, coolwater, or warmwater areas based on their maximum air and water temperatures in summer. Using this methodology, single measurements daily (≥24.5°C) at 1600 hours between July 1 September 7 can be plotted a nomogram approximate thermal classification site. Data from 122 throughout Great Lakes basin, Ontario, indicated that should revised include sampling days August...