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Canada and Transboundary Fisheries Management in Changing Oceans: Taking Stock, Future Scenarios

Special Issue in Ecology & Society (external link)


Guest Editorial

Canada and transboundary fisheries management in changing oceans: taking stock, future scenarios

U. R. Sumaila, Fisheries Economics Research Unit, Institute for the Oceans and Fisheries, The University of British Columbia; School of Public Policy and Global Affairs, the University of British Columbia, Vancouver, British Columbia, Canada David L. VanderZwaag, Marine & Environmental Law Institute; Dalhousie University

Article originally posted at oceans.ubc.ca.


The migration of fish due to unmitigated climate change could net fisheries in the Arctic 37 times more fish than current annual catch amounts by the end of the century, a new study from the University of British Columbia has found. But, the researchers warn, any future commercial fisheries must ensure species and ecosystem sustainability and consider the food security implications for local communities.

Estimating nitrogen loading and far-field dispersal potential from background sources and coastal finfish aquaculture: a simple framework and case study in Atlantic Canada.

Far-field nutrient impacts associated with finfish aquaculture have been identified as a topic of concern for regulators, managers, scientists, and the public for over two decades but disentangling aquaculture impacts from those caused by other natural and anthropogenic sources has impeded the development of monitoring metrics and management plans. We apply a bulk, steady-state nitrogen loading model (NLM) framework to estimate the annual input of Total Dissolved Nitrogen (TDN) from point and non-point sources to the watershed surrounding Port Mouton Bay, Nova Scotia (Canada). We then use the results of the NLM together with estimates of dissolved inorganic nitrogen (DIN) loading from a sea-cage trout farm in the Bay and progressive vector diagrams to illustrate potential patterns of DIN dispersal from the trout farm. Our estimated anthropogenic nitrogen contribution to Port Mouton Bay from all terrestrial and atmospheric sources is ∼211,703 kg TDN/year with atmospheric deposition accounting for almost all (98.6%). At a stocking level of ∼400,000 rainbow trout, the Port Mouton Bay sea-cage farm increases the annual anthropogenic TDN loading to the bay by 14.4% or 30,400 kg. Depending on current flow rates, nitrogen flux from the trout farm can be more than double the background concentrations of TDN near the farm site. Although it is unlikely that nitrogen loading from this single fish farm is saturating the DIN requirements of the entire bay, progressive vector diagrams suggest that the dispersal potential may be insufficient to mitigate potential symptoms of eutrophication associated with nitrogen fluxes. We present an accessible and user-friendly tool for managers to estimate baseline nutrient loading in relation to aquaculture and our use of progressive vector diagrams illustrate a practical and simple method for characterizing potential nutrient dispersal based on local conditions and spatial scales. Our study joins numerous studies which have highlighted the need for more effective monitoring and assessment methods to improve the detection of aquaculture effects at far-field scales and to assess those effects in relation to other natural and anthropogenic factors impacting coastal habitats.

Coastal and Indigenous community access to marine resources and the ocean: a policy imperative for Canada.

Access, defined as the ability to use and benefit from available marine resources or areas of the ocean or coast, is important for the well-being and sustainability of coastal communities. In Canada, access to marine resources and ocean spaces is a significant issue for many coastal and Indigenous communities due to intensifying activity and competition in the marine environment. The general trend of loss of access has implications for these communities, and for Canadian society. In this review and policy perspective, we argue that access for coastal and Indigenous communities should be a priority consideration in all policies and decision-making processes related to fisheries and the ocean in Canada. This paper reviews how access affects the well-being of coastal communities, factors that support or undermine access, and research priorities to inform policy. Recommended actions include: ensuring access is transparently considered in all ocean-related decisions; supporting research to fill knowledge gaps on access to enable effective responses; making data accessible and including communities in decision-making that grants or restricts access to adjacent marine resources and spaces; ensuring updated laws, policies and planning processes explicitly incorporate access considerations; and, identifying and prioritizing actions to maintain and increase access. Taking action now could reverse the current trend and ensure that coastal and Indigenous communities thrive in the future. This is not just a Canadian issue. Globally, the ability of coastal and Indigenous communities to access and benefit from the marine environment should be at the forefront in all deliberations related to the oceans.

The impact of coastal grabbing on community conservation – a global reconnaissance.

“Coastal grab” refers to the contested appropriation of coastal (shore and inshore) space and resources by outside interests. This paper explores the phenomenon of coastal grabbing and the effects of such appropriation on community-based conservation of local resources and environment. The approach combines social-ecological systems analysis with socio-legal property rights studies. Evidence of coastal grab is provided from four country settings (Canada, Brazil, India and South Africa), distinguishing the identity of the ‘grabbers’ (industry, government) and ‘victims’, the scale and intensity of the process, and the resultant ‘booty’. The paper also considers the responses of the communities. While emphasizing the scale of coastal grab and its deleterious consequences for local communities and their conservation efforts, the paper also recognizes the strength of community responses, and the alliances/partnerships with academia and civil society, which assist in countering some of the negative effects.

Oceana Canada Report: Collateral Damage: How to Reduce Bycatch in Canada’s Commercial Fisheries

This article can also be viewed at Oceana Canada

New report reveals that the Canadian government is inadequately addressing one of the biggest threats to our oceans

Up to 10.3 million tonnes of sea life is unintentionally caught each year around the world, captured in nets, lines and other gear. Some of this is kept and sold, or released safely; but far too much is put back in the ocean, either dead or dying. In Canada, this includes endangered and threatened species like whales, turtles, sharks and fish. For example, an estimated 1,200 endangered loggerhead turtles are caught each year on pelagic longlines in the swordfish fishery.

Scenarios for investigating the future of Canada’s oceans and marine fisheries under environmental and socioeconomic change.

There is a critical need to develop effective strategies for the long-term sustainability of Canada’s oceans. However, this is challenged by uncertainty over future impacts of global environmental and socioeconomic change on marine ecosystems, and how coastal communities will respond to these changes. Scenario analysis can address this uncertainty by exploring alternative futures for Canadian oceans under different pathways of climate change, economic development, social and policy changes. However, there has, to date, been no scenario analysis of Canada’s future ocean sustainability at a national scale. To facilitate this process, we review whether the literature on existing scenarios of Canada’s fisheries and marine ecosystems provides an integrative, social-ecological perspective about potential future conditions. Overall, there is sufficient national-level oceanographic data and application of ecosystem, biophysical, and socioeconomic models to generate projections of future ocean and socioeconomic trends in Canada. However, we find that the majority of marine-related scenario analyses in Canada focus on climate scenarios and the associated oceanographic and ecological changes. There is a gap in the incorporation of social, economic, and governance drivers in scenarios, as well as a lack of scenarios which consider the economic and social impact of future change. Moreover, available marine scenario studies mostly do not cover all three Canadian oceans simultaneously. To address these gaps, we propose to develop national-level scenarios using a matrix framework following the concept of Shared Socioeconomic Pathways, which would allow a social-ecological examination of Canada’s oceans in terms of the state of future uncertainties.

OceanCanada Conference in Vancouver May 24 - 27

The second OceanCanada Partnership conference was held in Vancouver from May 24-27 on the beautiful grounds of the University of British Columbia. The conference brought together more than 60 researchers, students and post-doctoral fellows, advisory board members, community and institutional partners to take stock of our activities and work towards an integrated research agenda. Through a series of panels and group discussions, round tables and workshops, the conference delegates identified the emerging threats, challenges, and opportunities facing Canada’s oceans and coastal communities, and began the difficult task of synthesizing research priorities.