Chronology of Lake Ontario ecosystem and fisheries

Morrison, Brian P.

doi:10.1080/14634988.2019.1669377

Cited by 8 publications

(5 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…McIntyre et al ( 2018 ) showed that Coho salmon ( Oncorhynchus kisutch ) are particularly susceptible to the toxic effects of the chemicals that are transported into urban streams in the northwestern United States. In the Lake Ontario basin, a range of native and nonnative salmonids, including introduced Coho salmon are present in the coastal areas and tributaries (Morrison 2019 ). It is possible that HMMM and other contaminants in urban streams in the Lake Ontario basin are stressors for these and other fish species.…”

Section: Resultsmentioning

confidence: 99%

Runoff of the Tire-Wear Compound, Hexamethoxymethyl-Melamine into Urban Watersheds

Johannessen

Helm

Metcalfe

2021

Arch Environ Contam Toxicol

View full text Add to dashboard Cite

Hexamethoxymethyl-melamine (HMMM) is used as a crosslinking agent in resins and plastics and in the manufacture of tires. In the present study, surface water samples were collected from two rivers adjacent to high traffic highways in the Greater Toronto Area in Ontario, Canada. Composite samples collected from the Don River and Highland Creek during rain events and a period of rapid snowmelt were preconcentrated using solid phase extraction and analyzed using liquid chromatography with high-resolution mass spectrometry. Elevated concentrations (> 1 µg/L) of HMMM were detected in surface waters during rain events in October of 2019 and during snow melt in early March of 2020. There were lower average concentrations of HMMM detected during rain events in the winter and spring of 2020. Temporal profiles of changes in the concentrations of HMMM in composite samples collected every 3 h during a rain event in October 2019 closely corresponded to the hydrograph profiles at the sampling sites, with the HMMM concentrations peaking > 6 h after the peak in water levels. This work contributes to the literature showing that HMMM is a ubiquitous contaminant of urban watersheds and that runoff from roads is a vector for the transport of this compound into urban surface waters.

show abstract

Section: Resultsmentioning

confidence: 99%

Runoff of the Tire-Wear Compound, Hexamethoxymethyl-Melamine into Urban Watersheds

Johannessen

Helm

Metcalfe

2021

Arch Environ Contam Toxicol

View full text Add to dashboard Cite

show abstract

“…The seven papers had different framings, methods and materials as to how they discuss cultural ES, which highlights the challenges of comparing empirical findings of the impacts of hydropower. Morrison (2019) provided a chronology of salmon in Lake Ontario, and the species has formed part of local communities' subsistence and recreational fishing, cultural heritage and narratives of the area from the 1600s and onwards, all of which have been affected heavily by the construction of dams. Piccolo et al (2012) assessed the current status of the Swedish Lake Vänern's remaining salmon and trout (Salmo trutta, Salmonidae) stocks and the importance of fisheries since the late 1800s and its relation to hydropower.…”

Section: Cultural Ecosystem Servicesmentioning

confidence: 99%

Atlantic salmon in regulated rivers: Understanding river management through the ecosystem services lens

et al. 2021

View full text Add to dashboard Cite

Known as the "king of fishes," the Atlantic salmon (Salmo salar, Salmonidae) is an iconic freshwater species whose contribution to human well-being has long been recognized, as have widespread declines in its abundance, partly due to river regulation.To understand how salmon conservation has been addressed within the ecosystem services (ES) framework, we synthesized the peer-reviewed literature on ES provided by salmon in regulated rivers. We developed a search string to capture allusions to provisioning, regulating, supporting and cultural ES and assessed the results to identify knowledge gaps. The effects of hydropower on fisheries catches and on modelled populations were shown in several publications. Overall, few studies focused explicitly on ES from salmon and hydropower; this is surprising given the considerable body of literature on salmon in regulated rivers. Wild salmon as a food source and other provisioning services are less important today than historically. Because predators such as salmon are important for facilitating biodiversity by cycling nutrients and controlling food webs, there is a scope of work for future assessments of these regulating and supporting services. Few papers explicitly addressed cultural ES, despite the salmon's longstanding iconic status; this is a knowledge gap for future ES assessments in relation to hydropower. The influence of ES assessments for policy makers is growing through the Intergovernmental Panel for Biodiversity and Ecosystem Services (IPBES) and the post-2020 biodiversity strategy. Explicitly addressing ES poses an opportunity for river managers to raise awareness of aquatic conservation efforts and well-informed decision-making for sustaining ES.

show abstract

“…The main discharge into the lake is from Lake Erie, through the Niagara River [6,7] and constitutes the headwater for the St. Lawrence River. Lake Ontario's native ecosystem supports several native species, such as walleye (Sander vitreus), Coho salmon (Oncorhynchus kisutch), Chinook salmon (Oncorhynchus tshawytsch) and several trout varieties, including rainbow (Oncorhynchus mykiss) and steelhead (Oncorhynchus mykiss irideus) [8]. Invasive mussels have succeeded to cover much of the bottom of the lake in the coastal areas.…”

Section: Introductionmentioning

confidence: 99%

Modeling nearshore-offshore water exchange in Lake Ontario

Hlevca,

Howell,

Valipour

et al. 2024

Preprint

View full text Add to dashboard Cite

The water quality and resources of Lake Ontario's nearshore ecosystem undergo heightened stress, particularly along the northwest shoreline. Hydrodynamic processes linking the distinct nearshore and offshore trophic structures play a crucial role in transporting nutrient-loaded water along and across the shore. Despite the pivotal connection between algae growth and the development of nuisance proportions, the scales over which these processes operate remain poorly understood. This study delves into the exchange dynamics between nearshore and offshore areas of Lake Ontario throughout 2018, employing a validated three-dimensional numerical model. A virtual passive age tracer is utilized to discern horizontal mixing time scales between nearshore regions of the lake (water depth < 30 m) and offshore locations. The dispersal pattern, as revealed by a passive tracer released from eight points around the model lake's perimeter, indicates more extensive diffusion in late summer when lake-wide stratification is established, compared to the mixed period. Coastal upwelling events, leading to intrusions of hypolimnetic waters, significantly contribute to net cross-shore transport, with the most pronounced effects observed in May and June when the offshore thermocline is shallow. In the northern part of the lake, dispersal predominantly occurs alongshore, mirroring the prevailing cyclonic (counterclockwise) coastal circulation during the stratified season. This pattern is a consequence of a 45% increase in upwelling events compared to three decades ago. In the northwestern and southern sectors of the lake, elevated cross-shore mixing is attributed to geomorphology-induced cross-basin currents.

show abstract

Chronology of Lake Ontario ecosystem and fisheries

Cited by 8 publications

References 37 publications

Runoff of the Tire-Wear Compound, Hexamethoxymethyl-Melamine into Urban Watersheds

Runoff of the Tire-Wear Compound, Hexamethoxymethyl-Melamine into Urban Watersheds

Atlantic salmon in regulated rivers: Understanding river management through the ecosystem services lens

Modeling nearshore-offshore water exchange in Lake Ontario

Contact Info

Product

Resources

About