A seascape-scale habitat model to support management of fishing impacts on benthic ecosystems

Smeltz, T. Scott; Harris, Bradley P.; Olson, John V.; Sethi, Suresh A.

doi:10.1139/cjfas-2018-0243

Cited by 5 publications

(3 citation statements)

References 36 publications

(1 reference statement)

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“…For example, large-diameter rubber bobbins separated by rows of small-diameter discs create openings under the footrope that reduce unobserved mortality of commercially valuable crab species (Hammond, Conquest, & Rose, 2013;Rose, Gauvin, & Hammond, 2010). This design requirement reduced habitat disturbance by 24% since it was implemented in the Bering Sea (2011) and central Gulf of Alaska (2014) flatfish fisheries (50 CFR § 679.24; Smeltz, Harris, Olson, & Sethi, 2019). Fly-wires attached to the warps (fork-rigged trawl), shortening of the warp-length-to-depth ratio and lighter/high-aspect-ratio/maneuverable semi-pelagic trawl doors also reduce the contact area of otter trawls (Brewer, Eayrs, Mounsey, & Wang, 1996;Broadhurst, Sterling, & Millar, 2015;Ramm, Mounsey, Xiao, & Poole, 1993;Valdemarsen et al, 2007).…”

Section: Gear Design and Operationsmentioning

confidence: 99%

Choosing best practices for managing impacts of trawl fishing on seabed habitats and biota

et al. 2019

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Bottom trawling accounts for almost one quarter of global fish landings but may also have significant and unwanted impacts on seabed habitats and biota. Management measures and voluntary industry actions can reduce these impacts, helping to meet sustainability objectives for fisheries, conservation and environmental management. These include changes in gear design and operation of trawls, spatial controls, impact quotas and effort controls. We review nine different measures and actions and use published studies and a simple conceptual model to evaluate and compare their performance. The risks and benefits of these management measures depend on the extent to which the fishery is already achieving management objectives for target stocks and the characteristics of the management system that is already in place. We offer guidance on identifying best practices for trawl‐fisheries management and show that best practices and their likelihood of reducing trawling impacts depend on local, national and regional management objectives and priorities, societal values and resources for implementation. There is no universal best practice, and multiple management measures and industry actions are required to meet sustainability objectives and improve trade‐offs between food production and environmental protection.

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Section: Gear Design and Operationsmentioning

confidence: 99%

Choosing best practices for managing impacts of trawl fishing on seabed habitats and biota

et al. 2019

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“…Similar examples exist in Europe (Bjørkan, 2011;Kraan et al, 2013;Pastoors, 2021) and New Zealand (Middleton and Guard, 2021). There are also many instances of effective collaboration towards the development and improvement of gear (Walsh et al, 2002;Harley and Robinson, 2008;Feekings et al, 2019;Merrifield et al, 2019), assessment of the selectivity of gear (Graham et al, 2007;Baker et al, 2011;Baker et al, 2014;O'Neill et al, 2019), analysis of selectivity in catch and surveys (Rose et al, 2010;Somerton et al, 2011;Veiga-Malta et al, 2019), analyses of management approaches (Smith et al, 2007;Smeltz et al, 2019) and conservation engineering solutions to mitigate fisheries impacts on marine environment (Kaiser et al, 2016;Österblom et al, 2020) or benthic substrates and communities (Rose et al, 2000;Rooper et al, 2011). Additionally, there are many examples of effective collaborative approaches to minimize or reduce bycatch and incidental mortality in protected or non-target species (Gauvin and Rose, 2001;Carruthers and Neis, 2011;Arkhipkin et al, 2021;Kroska et al, 2021;Yochum et al, 2021).…”

Section: Secondary Considerations and Inferencesmentioning

confidence: 99%

A new era for science-industry research collaboration – a view towards the future

Baker,

Steins,

Pastoors

et al. 2023

Front. Mar. Sci.

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Direct engagement of the fishing industry in the provision and co-creation of knowledge and data for research and management is increasingly prevalent. In both the North Atlantic and North Pacific, enhanced and targeted engagement is evident. More is needed. Science-Industry collaborative approaches to developing questions, collecting data, interpreting data, and sharing knowledge create opportunities for information transfer and improved understanding of ecosystem interactions, stock dynamics, economic incentives, and response to management. These collaborations require clear communication and awareness of objectives and outcomes. These initiatives also require careful attention to conditions and interactions that foster respect, trust, and communication. Respect is critical and entails acknowledging the respective skills and expertise of both scientists and fishers. Trust is needed to build confidence in the information developed and its use. Communication is essential to maintain relationships and leverage shared insights. To assess current trends and future opportunities related to this type of engagement, we convened a networking session of research scientists, industry scientists, industry leaders, and fishers at the Annual Science Meeting of the International Council for the Exploration of the Sea (ICES) to address the following questions: (1) What are scientific needs that could be addressed with industry-collected data or knowledge? And (2) How can science-industry collaboration be made sustainable? Here we identify opportunities and acknowledge challenges, outline necessary conditions for respectful and sustainable collaborative research, and highlight ways to promote stakeholder involvement in developing science. We address industry concerns and solicit industry advice. We also address challenges to scientists in ensuring standards for scientific data, conflict of interest, and applying information to advise management. The discussions in this session and subsequent correspondence have led to a set of guidelines and best practices that provide a framework to advance further collaboration between industry and research science. We identify opportunities for directed engagement. We also detail potential approaches to clarify expectations and develop avenues for iterative communication and engagement to sustain collaborative efforts over time. The intent is to improve and expand data streams and contextual understanding of ecosystem processes, stock assessment, and socio-economic dynamics to the benefits of science and industry alike.

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“…However, it might be interesting to think about the scale of the underwater landscape. Seascape as indeed been proven to be an adequate study scale to better understand marine life mechanisms (Cuadros et al, 2017;Smeltz et al, 2019). In this context, modeling via photogrammetry can provide information on species coverage and in particular the spatial dynamics of sessile species over time (Burns et al, 2015;Casella et al, 2017;Ferrari et al, 2017a,b).…”

Section: Perspectivesmentioning

confidence: 99%

3D Photogrammetry Modeling Highlights Efficient Reserve Effect Apparition After 5 Years and Stillness After 40 for Red Coral (Corallium rubrum) Conservation in French MPAs

Justine¹,

Cheminée²,

Drap

et al. 2021

Front. Mar. Sci.

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Imaging the marine environment is more and more useful to understand relationships between species, as well as natural processes. Developing photogrammetry allowed the use of 3D measuring to study populations dynamics of sessile organisms at various scales: from colony to population. This study focuses on red coral (Corallium rubrum), as known as precious coral. Metrics measured at a colony scale (e.g., maximum height, diameter and number of branches) allowed population understanding and a comparison between an old (Cerbère-Banyuls reserve) vs. a new (Calanques National Park) MPA. Our results suggested a 5-year time step allows the appearance of a significant difference between populations inside vs. outside the Calanques National Park no-take zones. Red coral colonies were taller and had more branches inside no-take zones. A significant difference was still observable for the populations inside the Cerbère-Banyuls reserve after 40 years of protection, reflecting the sustainability and effectiveness of precautionary measures set by the reserve. The impacts at the local level (mechanical destruction) and those presumed to occur via global change (climatic variations) underline the need to develop strategies both to follow the evolutions of red coral populations but also to understand their resilience. Photogrammetry induced modeling is a time and cost effective as well as non-invasive method which could be used to understand population dynamics at a seascape scale on coralligenous reefs.

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A seascape-scale habitat model to support management of fishing impacts on benthic ecosystems

Cited by 5 publications

References 36 publications

Choosing best practices for managing impacts of trawl fishing on seabed habitats and biota

Choosing best practices for managing impacts of trawl fishing on seabed habitats and biota

A new era for science-industry research collaboration – a view towards the future

3D Photogrammetry Modeling Highlights Efficient Reserve Effect Apparition After 5 Years and Stillness After 40 for Red Coral (Corallium rubrum) Conservation in French MPAs

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