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1. A modeling study to determine the contribution of interbasin versus intrabasin phosphorus loads on the southwestern nearshore of Lake Ontario

Author:
James J. Pauer; Wilson Melendez; Thomas P. Hollenhorst; Dustin Z. Woodruff; Terry N. Brown
Source:
Journal of Great Lakes research 2022 v.48 no.2 pp. 343-358
ISSN:
0380-1330
Subject:
Lake Ontario; Ontario,   etc   ; Cladophora; lakes; mathematical models; phosphorus; research; rivers; uncertainty; Lake Erie; Niagara River;     Show all 11 Subjects
Abstract:
... Elevated phosphorus and nuisance algae such as Cladophora have been persistent environmental concerns in the coastal areas of Lake Ontario. Phosphorus is regarded as one of the drivers of nearshore Cladophora and the most likely mitigation that can be used to control levels of this nuisance algae in the lakes. The Niagara River, carrying the Lake Erie interbasin load, is the major contributor of t ...
DOI:
10.1016/j.jglr.2021.09.014

2. Informality within Indigenous land management: A land-use study at Curve Lake First Nation, Canada

Author:
Robert A. Fligg; Brian Ballantyne; Derek T. Robinson
Source:
Land use policy 2022 v.112 pp. 105786
ISSN:
0264-8377
Subject:
Ontario,   etc   ; lakes; land policy; land tenure; uncertainty;     Show all 5 Subjects
Abstract:
... Curve Lake First Nation (CLFN) in Ontario has a mainland Reserve area of 649 ha and a Reserve population of 1368; 768 of whom are CLFN members and 600 of whom are seasonal or permanent non-members. Land management is an amalgam - there is much formal land tenure through Certificates of Possession (CPs) and leases but little formal land use planning. A desire by CLFN (Chief and Council, Lands Commi ...
DOI:
10.1016/j.landusepol.2021.105786

3. Sedimentary characteristics and morphologic change of till-bedded semi-alluvial streams: Medway Creek, Southern Ontario, Canada

Author:
Nathaniel Bergman; Marco J. Van De Wiel; Stephen R. Hicock
Source:
Geomorphology 2022 v.399 pp. 108061
ISSN:
0169-555X
Subject:
Ontario,   etc   ; alluvium; bedrock; geomorphology; gravel; rivers; streams;     Show all 7 Subjects
Abstract:
... We describe the first detailed reach-scale study of an incisional till-bed river. Our analysis focusses on boundary till characteristics, bare till patch features, annual erosion rates, bedform dimensions and spacing, and grain size distributions of bedforms. Results show that till exposures constitute a relatively small portion of the bed and that till erosion rates are relatively high compared t ...
DOI:
10.1016/j.geomorph.2021.108061

4. Evidence for temporally coherent increases in the abundance of small Discostella (Bacillariophyceae) species over the past 200 years among boreal lakes from the Experimental Lakes Area (Canada)

Author:
Brendan Wiltse; Graham R. Mushet; Andrew M. Paterson; Brian F. Cumming
Source:
Journal of paleolimnology 2022 v.67 no.3 pp. 273-287
ISSN:
0921-2728
Subject:
Ontario,   etc   ; Bacillariophyceae; climate; lakes; morphometry; sediments; spring; temperature; watersheds;     Show all 9 Subjects
Abstract:
... Increased relative abundances and accumulation rates of the small, centric diatom Discostella have been recorded in numerous paleolimnological investigations of north temperate lakes that span the last century. Yet, conflicting observations in the seasonal succession of small Discostella from monitoring studies, and opposite patterns in their abundance in sediment cores from some nearby lakes have ...
DOI:
10.1007/s10933-021-00232-7

5. Faster than an urban stream: Evaluating morphodynamics in urban channel reaches that have undergone form-based channel enhancement

Author:
Patrick Padovan; Jaclyn Cockburn; Paul Villard
Source:
Geomorphology 2022 v.411 pp. 108288
ISSN:
0169-555X
Subject:
Ontario,   etc   ; basins; infrastructure; land use change; stormwater; streams; urbanization;     Show all 7 Subjects
Abstract:
... Urban streams are frequently the focus of channel enhancement efforts due to extensive degradation, failing infrastructure and land use change caused by urban development. Following construction, short-term monitoring is a standard step in evaluating channel stability and amelioration success. However, monitoring activities rarely fully capture adjustment mechanisms, as geomorphic adjustment can t ...
DOI:
10.1016/j.geomorph.2022.108288

6. Nature-based cooling potential: a multi-type green infrastructure evaluation in Toronto, Ontario, Canada

Author:
Vidya Anderson; William A. Gough
Source:
International journal of biometeorology 2022 v.66 no.2 pp. 397-410
ISSN:
0020-7128
Subject:
Ontario,   etc   ; air temperature; bioclimatology; climate; forestry; urban agriculture; vegetation;     Show all 7 Subjects
Abstract:
... The application of green infrastructure presents an opportunity to mitigate rising temperatures using a multi-faceted ecosystems-based approach. A controlled field study in Toronto, Ontario, Canada, evaluates the impact of nature-based solutions on near surface air temperature regulation focusing on different applications of green infrastructure. A field campaign was undertaken over the course of ...
DOI:
10.1007/s00484-021-02100-5

7. Assessment of Alkylated and Unsubstituted Polycyclic Aromatic Hydrocarbons in Air in Urban and Semi-Urban Areas in Toronto, Canada

Author:
Maryam Moradi; Hayley Hung; James Li; Richard Park; Cecilia Shin; Nick Alexandrou; Mohammed Asif Iqbal; Manpreet Takhar; Arthur Chan; Jeffrey R. Brook
Source:
Environmental science & technology 2022 v.56 no.5 pp. 2959-2967
ISSN:
1520-5851
Subject:
Ontario,   etc   ; air; anthracenes; environmental science; guidelines; technology; toxicity; urban areas;     Show all 8 Subjects
Abstract:
... 22 alkylated polycyclic aromatic hydrocarbons (alk-PAHs) were characterized in ambient air individually for the first time in urban and semi-urban locations in Toronto, Canada. Five unsubstituted PAHs were included for comparison. Results from the measurements were used to estimate benzo[a]pyrene equivalent toxicity (BaPeq) of individual compounds in order to investigate the significance of a sing ...
DOI:
10.1021/acs.est.1c04299

8. Does hatch date set the clock? Timing of post‐fledging movements for families of a colonially breeding, long‐distance migratory songbird

Author:
Saeedeh Bani Assadi; Emily A. McKinnon; Edward D. Cheskey; Kevin C. Fraser
Source:
Journal of avian biology 2022 v.2022 no.4 pp. e02766
ISSN:
0908-8857
Subject:
Ontario,   etc   ; adults; eggs; fledglings; juveniles; migratory birds; nests; radio waves;     Show all 8 Subjects
Abstract:
... Factors that influence the development of migration timing in juvenile songbirds have implications for the ability of individuals to respond positively to rapid environmental changes. We investigated the impacts of nest timing on the post‐breeding movement timing of juveniles and adults of a migratory songbird. We tested whether first egg date and environmental factors predicted the initiation of ...
DOI:
10.1111/jav.02766

9. Nucleic acids are a major pool of hydrolyzable organic phosphorus in arable organic soils of Southern Ontario, Canada

Author:
Aidan De Sena; Chandra A. Madramootoo; Joann K. Whalen; Christian von Sperber
Source:
Biology and fertility of soils 2022 v.58 no.1 pp. 7-16
ISSN:
0178-2762
Subject:
Ontario,   etc   ; biogeochemical cycles; fractionation; hydrolysis; phosphates; phospholipids; soil organic phosphorus;     Show all 7 Subjects
Abstract:
... Soil organic phosphorus (Pₒ) that is hydrolyzed by phosphatases into inorganic phosphate is a source of phosphorus (P) for agricultural crops. However, the hydrolysis of Pₒ compounds is contingent on their chemical form and stabilization in the soil matrix. We quantified three hydrolyzable Pₒ pools (simple phosphomonoesters, phospholipids, and nucleic acids) by adding substrate-specific phosphatas ...
DOI:
10.1007/s00374-021-01603-y

10. Building a CSMI database: Experiences from the Lake Ontario 2018 CSMI Field Year

Author:
Cayla R. Sullivan; Daniel J. Gurdak
Source:
Journal of Great Lakes research 2022 v.48 no.2 pp. 434-440
ISSN:
0380-1330
Subject:
Lake Ontario,   etc   ; databases; information management; lakes; metadata; research; stakeholders; water quality;     Show all 8 Subjects
Abstract:
... The Cooperative Science and Monitoring Initiative (CSMI) instituted under the Science Annex of the 2012 Great Lakes Water Quality Agreement (GLWQA) provides an international framework to coordinate science and monitoring activities in one of the five Great Lakes. On a five-year cycle: (Y1) CSMI priorities are developed under GLWQA Annex 2 Lake Partnerships with input from managers, researchers, an ...
DOI:
10.1016/j.jglr.2021.12.003

11. Characterizing an invasion assemblage: first comparison of insect communities on native and introduced subspecies of Phragmites australis in Ontario, Canada

Author:
R. B. deJonge; M. J. McTavish; S. M. Smith; R. S. Bourchier
Source:
Biological invasions 2022 v.24 no.3 pp. 591-597
ISSN:
1387-3547
Subject:
Ontario,   etc   ; Chaetococcus; Lasioptera; Phragmites australis; Rhizedra lutosa; biological control; genotype; parasitoids; surveys;     Show all 9 Subjects
Abstract:
... Introduced Phragmites (Phragmites australis ssp. australis) forms part of an invasion assemblage in North America that includes non-native insect herbivores and parasitoids, some of which are now found on both the introduced and native subspecies of Phragmites (P. australis ssp. americanus). This insect assemblage is key to understanding the impact of P. australis invasion and interpreting the eff ...
DOI:
10.1007/s10530-021-02675-5

12. The effects of topical and oral Nigella sativa oil on clinical findings in knee osteoarthritis: A double-blind, randomized controlled trial

Author:
Neda Dolatkhah; Afsaneh Amirtaheri Afshar; Shahrzad Sharifi; Mohammad Rahbar; Vahideh Toopchizadeh; Maryam Hashemian
Source:
Journal of herbal medicine 2022 v.33 pp. 100562
ISSN:
2210-8033
Subject:
Ontario,   etc   ; Nigella sativa; herbal medicines; oils; osteoarthritis; pain; placebos; questionnaires; topical application;     Show all 9 Subjects
Abstract:
... The objective of this trial was to determine the efficacy and safety of topical and oral application of Nigella sativa (N.Sativa) oil compared to the placebo in knee osteoarthritis (KOA) patients. Patients with mild to moderate KOA were enrolled in this double-blind randomized controlled trial and randomly assigned to receive oral (2.5 ml of N. Sativa oil twice a day) or topical N.Sativa oil (2.5  ...
DOI:
10.1016/j.hermed.2022.100562

13. An Ecological Accounting System for Integrated Aquatic Planning and Habitat Banking with Case Study on the Toronto Waterfront, Ontario, Canada

Author:
Susan E. Doka; Charles K. Minns; Brent G. Valere; Steven J. Cooke; Rick J. Portiss; Thomas F. Sciscione; Alwyn Rose
Source:
Environmental management 2022 v.69 no.5 pp. 952-971
ISSN:
0364-152X
Subject:
Ontario,   etc   ; case studies; ecotypes; environmental management; fish; fish communities; habitats; lakes; natural capital;     Show all 9 Subjects
Abstract:
... A key aspect of contemporary fish habitat management is the need to account for losses and gains associated with development and offsetting measures while protecting high quality features. We propose an ecological accounting framework for aquatic ecosystems using habitat equivalents scaled to aquatic productivity, and using fish-to-habitat associations by life stage, based on local fish community ...
DOI:
10.1007/s00267-021-01531-5

14. Giant Red Kidney Worm (Dioctophyma renale) Infection in Puppies Less Than Four Months of Age from Northern Canada

Author:
Alexandra Anick Amaro; Tyler Greer; Dave Wilson; Magdalena Smrdelj
Source:
Journal of parasitology 2022 v.108 no.2 pp. 127-131
ISSN:
0022-3395
Subject:
Ontario,   etc   ; Nematoda; algorithms; disease transmission; laparotomy; omentum; parasitology; prepatent period; puppies; spaying; Manitoba;     Show all 11 Subjects
Abstract:
... In this article, we present 2 case reports of puppies less than 4 mo of age at the time of infection with the nematode known as giant red kidney worm (Diotophyma renale). The first puppy was prepared for an ovariohysterectomy that evolved into an exploratory laparotomy. An inflamed omentum was observed, and D. renale infection was suspected due to the puppies' place of origin. The algorithm develo ...
DOI:
10.1645/21-86

15. Evaluating and Visualizing Drivers of Coastline Change: A Lake Ontario Case Study

Author:
Meredith Caspell; Liette Vasseur
Source:
ISPRS international journal of geo-information 2021 v.10 no.6 pp. -
ISSN:
2220-9964
Subject:
Lake Ontario; Ontario,   etc   ; case studies; coasts; geographic information systems; spatial data;     Show all 6 Subjects
Abstract:
... Environmental and climatic changes are disproportionately felt in coastal communities, where drivers of coastline change are complicated with continued development. This study analyzed the coastline change of Lake Ontario in the Town of Lincoln, Ontario, Canada, using a mixed-methods two-phased approach that is novel to the study area. The first phase of the methodology included a coastline change ...
DOI:
10.3390/ijgi10060375

16. Agricultural intensification leads to higher nitrate levels in Lake Ontario tributaries

Author:
F.S. Liu; B.R. Lockett; R.J. Sorichetti; S.A. Watmough; M.C. Eimers
Source:
Science of the total environment 2022 v.830 pp. 154534
ISSN:
0048-9697
Subject:
Lake Ontario; Ontario,   etc   ; agricultural runoff; corn; crop production; environment; eutrophication; exports; forage; intensive farming; land cover; livestock; nitrates; nitrogen; pastures; phosphorus; reduced tillage; rowcrops; soybeans; storms; tile drainage; total dissolved phosphorus; water quality; wheat;     Show all 24 Subjects
Abstract:
... Eutrophication remains the most widespread water quality impairment globally and is commonly associated with excess nitrogen (N) and phosphorus (P) inputs to surface waters from agricultural runoff. In southern Ontario, Canada, increases in nitrate (NO₃-N) concentrations as well as declines in total phosphorus (TP) concentration have been observed over the past four decades at predominantly agricu ...
DOI:
10.1016/j.scitotenv.2022.154534

17. The Addition of Saflufenacil to Glyphosate plus Dicamba Improves Glyphosate-Resistant Canada Fleabane (Erigeron canadensis L.) Control in Soybean

Author:
Meghan Dilliott; Nader Soltani; David C. Hooker; Darren E. Robinson; Peter H. Sikkema
Source:
Agronomy 2022 v.12 no.3 pp. -
ISSN:
2073-4395
Subject:
Ontario,   etc   ; 2,4-D; Conyza canadensis; agronomy; bromoxynil; dicamba; glyphosate; glyphosate resistance; metribuzin; saflufenacil; soybeans;     Show all 11 Subjects
Abstract:
... Glyphosate + dicamba has provided variable glyphosate-resistant Canada fleabane (GRCF) control in glyphosate/dicamba-resistant (GDR) soybean. Previous research has indicated improved GRCF control when a third herbicide was added to glyphosate + dicamba, though research is limited. The objective of this research was to ascertain if the level and consistency of GRCF control can be improved when addi ...
DOI:
10.3390/agronomy12030654

18. Groundwater as a source and pathway for road salt contamination of surface water in the Lake Ontario Basin: A review

Author:
Ceilidh Mackie; Rachel Lackey; Jana Levison; Luciana Rodrigues
Source:
Journal of Great Lakes research 2022 v.48 no.1 pp. 24-36
ISSN:
0380-1330
Subject:
Lake Ontario; Ontario,   etc   ; basins; chlorides; cold; groundwater; lakes; research; surface water; urbanization;     Show all 10 Subjects
Abstract:
... In Ontario, there is limited comprehensive research regarding the contribution of chloride in groundwater to surface water systems. The delivery of chloride via groundwater can contribute to the degradation of the Great Lakes and their tributaries. Thus, this review intends to fill or identify knowledge gaps regarding assessing groundwater as a potential source of road salt, the single largest use ...
DOI:
10.1016/j.jglr.2021.11.015

19. Evaluation of barley testing locations in Ontario

Author:
Raja Khanal; Ana Badea
Source:
Canadian journal of plant science 2021 v.102 no.2 pp. 414-418
ISSN:
1918-1833
Subject:
Ontario,   etc   ; barley; cultivars;     Show all 3 Subjects
Abstract:
... To develop new barley cultivars, promising genotypes are evaluated for their performance each year at several test locations representing the target region. In this study, we analyzed the Ontario barley registration trial data from 2015 to 2020 to understand the barley mega-environment in Ontario and to evaluate the suitability of the test locations. The analysis showed that the barley test locati ...
DOI:
10.1139/CJPS-2021-0149

20. Analysis of 200 years of change in ontario wetland systems

Author:
Elissa Penfound; Eric Vaz
Source:
Applied geography 2022 v.138 pp. 102625
ISSN:
0143-6228
Subject:
Lake Ontario; Ontario,   etc   ; anthropogenic activities; geography; georeferencing; tile drainage; wetlands; Lake Erie;     Show all 8 Subjects
Abstract:
... Following the establishment of European settlers, wetlands in southern Ontario have experienced an estimated loss of more than 68% due to development, agriculture, and other anthropogenic factors. Using georeferenced historic maps, historic and present-day wetland data, present-day anthropogenic activity, agricultural and population data, this study has explored the spatial and temporal relationsh ...
DOI:
10.1016/j.apgeog.2021.102625