Multi-proxy paleoenvironmental record of colonial land-use change in the lower Rideau Canal system (Colonel By Lake), Ontario, Canada

Sonnenburg, Elizabeth; Boyce, Joseph I.; Reinhardt, Eduard G.

doi:10.1007/s10933-008-9302-7

Cited by 13 publications

(6 citation statements)

References 30 publications

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“…The available literature on the topic, including scholarly articles, business magazine articles, and media reports (Fischer 2018;Hall and Andres 2017;Tumilty 2017;Brammer et al 2014;Damyanov et al 2012 Rideau Waterway 2012;Donohoe 2012;Boswell 2012;Charles 2011), indicates a consensus that skating days are reducing every year. Landuse changes over the years have suggested (Sonnenburg et al 2009) the same pattern.…”

Section: Introductionmentioning

confidence: 82%

Is climate change impacting Rideau Canal Skateway, the world’s longest skating rink?

Agrawal

Jahanandish

2018

Nat Hazards

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This study aims to establish a comprehensive understanding of the effects of climate change on the Rideau Canal Skateway of Canada, the longest natural skating rink in the world. Through this study, we can establish that the Skateway season length can be explained by local temperature. Other variables considered in the study are snowfall as well as large-scale climate variations, namely Arctic Oscillation (AO), North Atlantic Oscillation (NAO), and El Nin ˜o Southern Oscillation (ENSO) using their annual average indices values. The regression analyses conducted demonstrate that the variation in the season length of the Skateway can be explained by local temperature, and the variation in the local temperature can be explained by the AO and NAO. The ENSO does not explain the local temperature in the Skateway area. Therefore, it can be established that this study enhances our understanding of the complex climate phenomena in relation to the Skateway season length. We recommend that large climatic variables should be taken into account when predicting and planning for the Skateway season in a given year.

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Section: Introductionmentioning

confidence: 82%

Is climate change impacting Rideau Canal Skateway, the world’s longest skating rink?

Agrawal

Jahanandish

2018

Nat Hazards

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“…Construction of the Rideau Canal incurred profound changes to the local environment. System-wide flooding is clearly delineated in sedimentary records via changes in sediment physical characteristics (Sonnenburg et al 2009), as well as changes in aquatic organism and pollen assemblages (Karst and Smol 2000;Forrest et al 2002). Prior to construction of the Rideau Canal, the "Rideau Route" existed across three watersheds: Rideau River, Gananoque River, and Cataraqui River.…”

Section: Ecological Implications Of Construction and Operationsmentioning

confidence: 99%

Historical, contemporary, and future perspectives on a coupled social–ecological system in a changing world: Canada’s historic Rideau Canal

et al. 2022

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Anthropogenic waterways and canal systems have been part of the cultural and natural landscape for thousands for years. As of the late 20th century, more than 63,000-km of canals exist worldwide as transport routes for navigation, many with barriers (e.g., locks, dams) that fragment the system and decrease connectivity. Fragmentation alone can have negative implications for freshwater biodiversity; by isolating populations and communities, other human-mediated disturbances associated with canals like poor water quality and invasive species can exacerbate these negative effects. As such, the capacity of these interconnected freshwater systems to support biodiversity is continuously degrading at a global level. One critical, highly complex issue that unites canals worldwide is the challenge of governing these systems in a holistic, unified way to both protect biodiversity and preserve historical elements. Managing historic canals involves multiple objectives across many agencies and stakeholders, often with different or conflicting objectives. Here, we use the Rideau Canal, a UNESCO World Heritage Site and National Historic Site of Canada, as a case study to demonstrate the importance of considering canals as social-ecological systems for effective and efficient governance. Historic canals are integrated systems of both humans (social) and the environment (ecological), linked by mutual feedbacks and coevolution, and must be managed as such to achieve conservation goals while maintaining commemorative integrity. We discuss the history of the Rideau Canal and its current governance, biodiversity in the waterway, different threats and issues (user conflicts, aquatic pollution, shoreline development, water management, species at risk, and invasive species), and conclude by outlining ways to address the challenges of managing it as a coupled social-ecological system. We present different research needs and opportunities that would enable better management, though above all, we propose a shift from the current governance structure – which at best can be considered “patchwork” – to a coordinated, multi-scalar and multi-stakeholder governance regime such that the Rideau Canal can be maintained for its historical integrity without compromising biodiversity conservation. Given that canals are now pervasive worldwide, this article is not only topical to the Rideau Canal, but also to other waterways in Canada and beyond.

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“…Several previous studies have employed paleolimnological methods to lake sediment archives within the Rideau Canal system for evaluation of historical conditions 221,222 . A wide range of indicators are routinely employed in paleoenvironmental studies to determine anthropogenic changes, hydrological conditions and land-use impacts.…”

Section: Discussionmentioning

confidence: 99%

Application of Metabolomics for the Detection and Evaluation of Cyanopeptide Mixtures in Ontario and Quebec Lakes

McCann¹

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The magnitude and frequency of cyanobacteria harmful algae blooms (cHABs) are increasing on a global scale. Anthropogenic nutrient enrichment, and climate change are drivers of bloom formation and favour cyanobacterial dominance in most aquatic ecosystems. The release of cyanotoxin mixtures by blooms into aquatic systems pose a risk to public and ecosystem health.The majority of cyanotoxin research has focused on specific groups: microcystins (MCs), cylindrospermopsins (CYNs), BMAA, saxitoxins (STXs) (anatoxins) ATXs. Other bioactive cyanopeptides (CNPs) produced by cHABs have received much less attention. The chemistry, toxicology, and environmental concentrations of the anabaenopeptin (APs), cyanopeptolin (CPs), microginin (MGs), cyanobactin (CBs), aeruginosin (ASs) CNP groups are largely unknown despite having notable biological activities and documented co-occurrence with cyanotoxins. Untargeted, targeted, and semi-targeted mass-spectrometry based metabolomic approaches were applied to study the CNP profiles of fifty-five cyanobacteria bloom samples collected from fifteen watercourses in Eastern Ontario and Western Quebec. 117 unique cyanopeptides were identified and ninety-four quantitated. MCs and ferintoic acid A (FA A) were quantified with reference materials and other CNPs were determined semi-quantitatively. CPs and APs displayed the greatest diversity in group variants and possessed similar concentrations and occurrence to that of MCs. Based on environmental concentrations and ubiquity of the CP and AP groups, they are recommended for prioritization in future toxicological and environmental research. Additionally, the apparent rise in cHABs, has drawn attention from paleolimnological researchers. Historical records of cHABs are limited, and proxies of cyanobacteria occurrence are typically restricted to pigments and DNA -both of which are sensitive to environmental degradation. However, MCs produced by freshwater cyanobacteria are stable cyclic hexapeptides. MCs in lake sediment archives can provide context to both the occurrence and toxicity of historical cHABs. To evaluate the use of MCs as a paleolimnological proxy, an MC extraction and quantitation method was iii developed and validated for four MC congeners (MR RR, MC LR, [Dha 7 ]MC LR, MC LA) in lake sediments. The method was applied to sediment cores collected from the Rideau Canal system.The MC method was combined with multiple proxies of Itrax-XRF, chlorophyll-a analyses and radioscopic dating methods to develop a chronology of historical lake conditions. The multi-proxy approach provided a clear indication of increasing biological productivity towards the surface of both cores. The apparent trend of productivity appears to be a result of climate warming and anthropogenic nutrient enrichment. I would like to extend my upmost gratitude and thanks to my supervisor, David McMullin, for the continued guidance and support, and providing the opportunity to develop and expand my chemistry skillset with natural products and cyanobacteria metabolites. ...

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Multi-proxy paleoenvironmental record of colonial land-use change in the lower Rideau Canal system (Colonel By Lake), Ontario, Canada

Cited by 13 publications

References 30 publications

Is climate change impacting Rideau Canal Skateway, the world’s longest skating rink?

Is climate change impacting Rideau Canal Skateway, the world’s longest skating rink?

Historical, contemporary, and future perspectives on a coupled social–ecological system in a changing world: Canada’s historic Rideau Canal

Application of Metabolomics for the Detection and Evaluation of Cyanopeptide Mixtures in Ontario and Quebec Lakes

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