A5030651831- Coastal wetland ecosystem dynamics
- Ecology and Vegetation Dynamics Studies
- Peatlands and Wetlands Ecology
- Environmental Conservation and Management
- Pesticide and Herbicide Environmental Studies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Constructed Wetlands for Wastewater Treatment
- Climate Change and Health Impacts
- Ecosystem dynamics and resilience
- Sustainability and Ecological Systems Analysis
- Soil and Water Nutrient Dynamics
- Biological Control of Invasive Species
- Mediterranean and Iberian flora and fauna
- Weed Control and Herbicide Applications
- Hydrology and Sediment Transport Processes
- Species Distribution and Climate Change
- Light effects on plants
- Conservation, Biodiversity, and Resource Management
- Atmospheric and Environmental Gas Dynamics
- Marine and coastal plant biology
- Forest Biomass Utilization and Management
- Diatoms and Algae Research
- Bioeconomy and Sustainability Development
- Sustainability and Climate Change Governance
- Invertebrate Taxonomy and Ecology
Carleton University
2022-2024
University of Waterloo
2017-2023
Abstract Cities concentrate problems that affect human well-being and biodiversity. Exploring the link between mental health biodiversity can inform more holistic public urban planning. Here we examined associations bird tree species diversity estimates from eBird community science datasets national forest inventories with self-rated metrics Canadian Community Health Survey. We linked data across 36 Metropolitan Areas 2007-2022 at a postal code level. After controlling for covariates, found...
Abstract Invasive species negatively impact vegetation communities. European common reed [ Phragmites australis (Cav.) Trin. ex Steud. ssp. ] is rapidly spreading throughout North American wetlands. As such, the suppression of P. populations a goal many managers, as its removal should provide an opportunity to restore native In Ontario, managers applied glyphosate-based herbicide more than 400 ha in ecologically significant coastal marshes, representing first time this tool was used over...
Early definitions of conservation focused largely on the end goals protection or restoration nature, and various disciplinary domains that contribute to these ends. Conservation science practice has evolved beyond being just issues scarcity biodiversity decline. To better recognize inherent links between human behaviour conservation, “success” in is now defined terms include rights needs. We also know who engages how, dictates likelihood will be embraced applied yield gains. Here we present...
Freshwater ecosystems face numerous threats, including habitat alteration, invasive species, pollution, over extraction of resources, fragmentation, and climate change. When these threats intensify and/or combine with each other, their impacts can shift the ecosystem past a tipping point, producing major potentially irreversible in state, called regime shift. We generated an evidence map to assess current state knowledge on points freshwater ecosystems. Our mapping exercise revealed large...
Wetland restoration often involves invasive‐plant suppression to encourage the recovery of native‐dominated vegetation communities. However, assessment is usually focused only on vegetation, and response other critical wetland biota, such as macroinvertebrates, seldom assessed. We characterized aquatic, semi‐aquatic, terrestrial macroinvertebrate communities in remnant, uninvaded marsh identify targets compared this Phragmites australis ‐invaded formerly invaded that was treated with...
The need to understand the influence of high-level factors that shape species richness and population size is becoming more important as global biodiversity losses threaten biotic communities. Here we investigate ecological drift on periphytic diatom community composition in arctic lakes. If strongly influenced by drift, hypothesize (i) alpha diversity will increase with increasing lake size, due decreasing drift-mediated local extinction, (ii) beta be greatest among small lakes lowest large...
In some cases, managing an established invasive species may do more harm to ecosystem than allowing the invader persist. Given limited resources available land managers and realities of conservation triage, we recognized need for systematic guidance management decisions made at “late end” invasion curve. We gathered interdisciplinary group experts practitioners address question “under what circumstances is active aquatic warranted?” Our working identified three key dimensions this question:...
Ecosystems experiencing pressures are at risk of rapidly transitioning (“tipping”) from one state to another. Identifying and managing these so-called tipping points continue be a challenge in marine, freshwater, terrestrial ecosystems, particularly when multiple potentially interacting drivers present. Knowledge points, the mechanisms that cause them, their implications for management practices evolving, but often isolation within specific ecological realms. Here, we summarize current...
Abstract Wetlands are important global carbon sinks, an increasingly ecosystem service. Invasive plants can disrupt wetland budgets, although efforts to suppress invasive may also have unintended effects. Phragmites australis subsp. (European common reed) produces extensive monocultures that displace resident plant communities. In Long Point (Ontario, Canada), a glyphosate-based herbicide was used control over 900 ha of P. . We determined how this ongoing management, and different...
Abstract Wetland carbon budgets largely depend on the wetland communities’ relative rate of assimilation and emission. Invasive plants with growth or decomposition patterns that differ from reference plant communities may shift budgets, as invasive suppression efforts. For example, Phragmites australis (European Common Reed), which replaces meadow cattail marsh in Laurentian Great Lakes area, has high biomass production foliar nitrogen, can modify environment conditions effect rates, creates...
Abstract When an invasive wetland grass degrades a Ramsar and Important Bird Area, decisive management action is called for. To limit the extent spread of European Phragmites australis , Ontario government began first, large-scale application glyphosate (Roundup Custom®) over standing water to control species in Canadian history. Between 2016 2018, 1000 ha marsh were treated. assess risk this herbicide presented aquatic biota, we measured concentration glyphosate, its primary breakdown...
Abstract Invasive Phragmites australis (European Common Reed) is rapidly spreading throughout North American wetlands, with negative impacts on wildlife and native plants. The removal or suppression of P. desired to provide an opportunity for vegetation wetland fauna recover. In Ontario, managers applied a glyphosate-based herbicide >400 ha in ecologically significant Great Lakes coastal marshes, representing the first time this tool was used over standing water suppress Canada. Using...
Abstract Identifying the mechanisms that result in a “high impact” invasive species can be difficult. Coexistence theory suggests detrimental better predicted by incorporating both niche differences and fitness than examining overlap alone. Specifically, should take up shared limited resources more efficiently their neighbouring resident species. While there is clear evidence Phragmites australis successfully displacing species, remains few field studies attempt to quantify difference...
Abstract Plant invasions often lead to homogenization of the plant community, but potential for cause other trophic levels is under-studied in many systems. We tested whether bird community Phragmites australis- invaded marsh would exhibit spatial and temporal taxonomic compared remnant cattail meadow marsh. using by P. australis remnant, uninvaded vegetation a year with average water depths above-average coastal marshes World Biosphere Reserve. Our results demonstrate strong evidence...