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Community Based Monitoring in a Changing Northern Ontario
Summary of Thunder Bay Workshop
Assessing the Potential Cumulative Impacts of Land Use and Climate Change on Freshwater Fish in Northern Ontario
The subarctic boreal landscape of northern Ontario is of global importance thanks to the ecological intactness of terrestrial and freshwater systems spanning an area larger than California. This region also contains some of the largest undammed rivers remaining in the world, thousands of lakes and the largest wetland complex in North America. The region’s diverse freshwater ecosystems support at least 50 species of freshwater fish, making this home to the largest area of high fish biodiversity with low human impacts within Canada. Healthy aquatic systems in Northern Ontario are important to First Nations and these systems also offer important ecological and social services to other Ontarians including climate regulation and recreational fishing. This region is also rich in natural resource potential including minerals and extensive hydroelectric potential. This study addresses a gap in current piecemeal planning efforts and considers the cumulative impacts of new land use and climate change on four freshwater fish species: walleye, lake sturgeon, lake whitefish, and brook trout across an area of 440,000 square kilometres. We apply land use and climate change scenarios within the ALCES Online toolkit to examine the impacts of these scenarios on expert-derived models for fish sustainability.
Watching, Listening, and Learning to Understand Change - Developing a Community-Based Monitoring (CBM) Initiative in Ontario's Far North
Ontario’s Far North is one of the world’s largest most intact expanses of boreal forest and wetlands. The region has almost no industrial development today. Far from being a frontier for new mines, all-weather roads, and transmission, the region is the homeland of Cree and Ojibway Indigenous peoples. They rely on the land, freshwater, air, fish and wildlife for traditional economies and cultural and spiritual values. They are also engaged in environmental planning for new industrial development and climate change. As such, impacts of climate change and development decisions on communities and their traditional territories, must be monitored. Our report develops the rationale for the design and implementation of a community-based monitoring approach in Ontario’s Far North and looks at examples from across Canada and around the world in order to support First Nations in their roles and responsibilities in taking care of the land, water, fish, and wildlife.
Similarities and Differences in Barriers and Opportunities Affecting Climate Change Adaptation Action in Four North American Landscapes
Climate change presents a complex set of challenges for natural resource managers across North America. Despite recognition that climate change poses serious threats to species, ecosystems, and human communities, implementation of adaptation measures is not yet happening on a broad scale. Among different regions, a range of climate change trajectories, varying political contexts, and diverse social and ecological systems generate a myriad of factors that can affect progress on climate change adaptation implementation. This study surveyed and interviewed practitioners, decision-makers, and scientists involved in natural resource management in four different North American regions, northern Ontario (Canada), the Adirondack State Park (US), Arctic Alaska (US), and the Transboundary Rocky Mountains (US and Canada) in order to understand the general versus site-specific nature of barriers and opportunities influencing implementation.
Variation in Acute Thermal Tolerance within and among Hatchery Strains of Brook Trout
This paper investigates the thermal tolerance of the three strains of brook trout that are the primary ones used in Ontario hatcheries, as well as that of a brook trout subspecies. Evidence for significant differences in temperature tolerance was observed both within and among strains, suggesting that the thermal performance of brook trout populations will be under substantial selective pressure due to climate change. Strains with existing tolerances for warmer conditions will be better suited to handle anticipated warming temperatures.
Life history differences parallel environmental differences among North American lake trout (Salvelinus namaycush) populations
Lake trout (Salvelinus namaycush) exhibit substantial life history variation range-wide and at a local scale. This study addresses two hypotheses that have been proposed to account for this: (i) over the zoogeographic range, climatic conditions are associated with life history differences; and (ii) within smaller geographic regions, physical lake attributes are associated with life history differences.
Quantifying historical, contemporary, and anthropogenic influences on the genetic structure and diversity of lake sturgeon (Acipenser fulvescens) populations in northern Ontario
Lake sturgeon (Acipenser fulvescens) are a species of conservation concern across their range, with impoundments and exploitation acting as significant impediments to their recovery. Northern Ontario contains some of the few remaining intact systems with healthy lake sturgeon populations because of low exploitation and undammed, unregulated watersheds. Although preliminary research suggests that northern Ontario lake sturgeon are genetically distinct from depleted sturgeon populations in the Great Lakes basin, this region represents a large gap in our understanding of genetic diversity of lake sturgeon.
Identifying a suite of surrogate freshwaterscape fish species - a case study of conservation prioritization in Ontario's Far North.
Freshwater ecosystems are among the most threatened ecosystems on the planet, yet freshwater fish species are frequently overlooked in conservation planning initiatives. Resource development is being planned for Ontario’s Far North (OFN) but due to a lack of data, the freshwaterscape is being largely overlooked. This study uses the Landscape Series Approach (LSA) to identify focal species as a starting place for research, management, and conservation of freshwater resources in OFN. It is the first study to apply the LSA approach on a freshwaterscape.
Tracking the long-term responses of diatoms and cladocerans to climate warming and human influences across lakes of the Ring of Fire in the Far North of Ontario, Canada
The extensive peatlands and lakes of the far north of Ontario are significant carbon sinks, making this a region of increasing priority under a changing climate. However, competing economic interest has also increased within this region due to the recent discovery of vast mineral deposits, known as “the ring of fire”. Environmental monitoring to establish baseline ecological information for a vulnerable region will be imperative at a time where the impacts of future resources extraction, within the context of multiple stressors (climate warming), is unknown. To determine biotic responses to warming prior to the commencement of mining activities, this study examined core sediments from lakes (deep and shallow) located within the Ring of Fire.
Scale and watershed features determine lake chemistry patterns across physiographic regions in the far north of Ontario, Canada
Climate warming and increased industrial development will have direct impacts on watershed characteristic and lakes in the far north of Ontario. Conservation planning for the aquatic community in northern Ontario will require sound data to inform management decisions. This study conducted lake chemistry surveys from 2011-2012 to increase the knowledge regarding remote northern lakes and to address the limited amount of limnological data available for this region.
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