A framework for assessing harvest strategy choice when considering multiple interacting fisheries and a changing environment: The example of eastern Bering Sea crab stocks

Punt, André E.; Dalton, Michael; Daly, Benjamin; Jackson, Tyler; Long, W. Christopher; Stockhausen, William T.; Szuwalski, Cody; Zheng, Jie

doi:10.1016/j.fishres.2022.106338

Cited by 10 publications

(6 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Duplisea et al (2021) proposed the use of empirical or phenomenological models to provide broad predictive capacity to quantify future states to manage risks associated with management decisions under plausible future environmental conditions and fishery objectives. Similar to environmentally conditioned MSEs (Kaplan et al, 2021; Punt et al, 2022), Monte Carlo simulations based on the underlying environmental effect on population response provide projections of the probability of achieving the objectives through time while allowing an assessment of the importance of environmental change on stock dynamics but without the complexity of an MSE. Successive and consistent departures from projections can serve to assess whether other factors may be driving stock dynamics or that changes in baseline conditions may require a re‐evaluation of the stock's production potential and fishery objectives.…”

Section: Discussionmentioning

confidence: 99%

“…However, the application of such fundamental research in stock assessments remains limited globally (Bell et al, 2020; Marshall et al, 2019; Skern‐Mauritzen et al, 2016), and is subject to error and breakdown (King et al, 2015; Myers, 1998; Szuwalski & Hollowed, 2016). Environmental effects are often implicit in management strategy evaluations (MSE) (Punt, A’mar, et al, 2014) although there are several instances in which the potential consequences of environmental effects are explicitly considered (Kaplan et al, 2021; Punt et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Incorporating knowledge of changes in climatic, oceanographic and ecological conditions in Canadian stock assessments

et al. 2022

View full text Add to dashboard Cite

Environmental impacts on fisheries are pervasive, yet methods to account for them in stock assessments and management decisions vary in rigour and quality. The prevalence and efficacy of methods to account for environmental impacts are not well documented, limiting our ability to adequately respond to future environmental and climate changes for adaptive resource management. In Canada, legislation now requires that environmental conditions are considered in the management of fish stocks, yet the current extent of implementation in assessment processes is poorly understood. We assessed the use of climate, oceanographic and ecological considerations in science advisory processes for 178 stock assessments by Fisheries and Oceans Canada. We evaluated whether these considerations were included in conceptual hypotheses about broad‐scale mechanisms, quantitative or qualitative analyses, and the development of management advice on current or future stock status. Conceptual hypotheses were included in 46% of assessments; quantitative inclusions occurred in 21% of assessments, while qualitative interpretations appeared in 31% of assessments; and 27% of assessments included climate, oceanographic and/or ecological considerations in the advice. Assessments of salmonids, invertebrates and pelagic taxa more frequently made use of environmental data than those for groundfish and elasmobranchs. Comparing our findings with assessments in other jurisdictions highlighted a gap in Canada's ability to respond to environmental changes and a need to develop integrated management approaches, such as regional ecosystem assessments and approaches that combine modelling and empirical analyses, with socio‐economic analysis within interdisciplinary teams.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Incorporating knowledge of changes in climatic, oceanographic and ecological conditions in Canadian stock assessments

et al. 2022

View full text Add to dashboard Cite

show abstract

“…In addition, the components and spatio‐temporal scales of the ecosystem model should fit the management purpose and model capability, and it should focus on the ecosystem components directly affected by the management action (Geary et al, 2020). Finally, less data‐demanding approaches which also allow the incorporation of ecosystem realism into the management advice exist, such as adjusting single species reference points with ecosystem information (Howell et al, 2021), implementing risk‐equivalent empirical approaches (Duplisea et al, 2021) and explicitly including environmental effects in the single species MSE process (Hill et al, 2017; Punt et al, 2022).…”

Section: Discussionmentioning

confidence: 99%

“…In the case of unavailability of multispecies and/or ecosystem model, a way to include ecosystem realism into the advice is by explicitly considering environmental factors in the single‐species MSE process. For example, Punt et al, 2022 developed a framework to integrate the effect of temperature and pH on growth and survival of king and snow crab, and decide on harvest control rules. Another example is the case of the Pacific sardine, which management includes the use of an environmental buffer (so called

E_{MSY}

) to account for the impact of temperature on the productivity of the stock.…”

Section: Managing Marine Biological Resources In a Changing Environmentmentioning

confidence: 99%

Using an EBFM lens to guide the management of marine biological resources under changing conditions

Díaz

2022

Fish and Fisheries

View full text Add to dashboard Cite

The management of natural resources is currently more challenging than ever before. Climate change and human population growth pose a threat to marine ecosystems as we know them. In order to preserve ecosystems, biodiversity and ecosystem services, management of biological resources must adopt a holistic strategy. Ecosystem‐Based Fisheries Management (EBFM) enables this by managing natural resources at the ecosystem level. However, EBFM objectives and implementation can be unclear at times, particularly when framed in the context of shifting conditions. In this research, the strategies available for managing marine biological resources within the EBFM framework and in a changing environment are reviewed. The purpose of this publication is to guide the decision on whether and how to change current management strategies in order to achieve policy goals. The manuscript starts with a revision of ecosystem indicators and ecosystem models used to detect and describe changes in ecosystem dynamics and stocks productivities under present and future conditions. Then, the different frameworks and methods available for integrating this information into the decision‐making process are summarised. Currently, some of the options available to include ecosystem realism into the fisheries advice include using ecosystem models in the Management Strategy Evaluation (MSE) process, adjusting single species reference points with ecosystem information and implementing risk‐equivalent empirical approaches. However, barriers that are impeding the adoption of these techniques exist. I concluded the study by identifying them and providing literature‐based solutions to overcome them from an interdisciplinary perspective.

show abstract

“…Adults and first stage larvae calcify faster in response to low pH (Long et al, 2013a) and juveniles maintain calcification levels (Long et al, 2013b); however, despite this, changes to the cuticle lead to thinning of the carapace and decreased hardness in the chelas in juveniles at low pH (Coffey et al, 2017). These effects are predicted to have a negative effect on the red king crab population and fisheries in Alaska in the near future (Punt et al, 2014; Punt et al, 2022) Nothing is known about the response of larvae past the first stage to low pH, so, in this study, we reared red king crab larvae from hatching to the first crab stage in four different pH treatments to fill this critical gap.…”

Section: Introductionmentioning

confidence: 99%

Effects of ocean acidification on red king crab larval survival and development

Long,

Conrad,

Gardner

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

Ocean acidification, a decrease in oceanic pH resulting from the uptake of anthropogenic CO2, can be a significant stressor for marine organisms. In this study, we reared red king crab larvae from hatching to the first crab stage in four different pH treatments: current surface ambient, diel fluctuation to mimic larval migration between the surface and mixed layer under current ambient conditions, pH 7.8, and pH 7.5. Larvae were monitored throughout development and the average length of each stage was determined. At each of the zoeal stages, the glaucothoe stage, and the first crab stage, we measured survival, morphometry, dry mass, and carbon, nitrogen, calcium, and magnesium content. Red king crab larvae were highly resilient to ocean acidification. There were no differences among treatments in survival or in average stage length. Although there were clear ontogenetic trends in size, weight, and elemental composition, most of these did not vary with pH treatment. Zoeal morphology did not vary among treatments, although glaucothoe and C1 crabs were slightly smaller in pH 7.8 than in the ambient treatment. Ambient larvae also had a slightly higher mass than pH 7.8 larvae but not pH 7.5. Ambient larvae had higher magnesium contents than pH 7.8 and pH 7.5, but calcium levels were the same. Ambient larvae also had slightly lower carbon and nitrogen content than pH 7.8 and pH 7.5 larvae but only in the 4th zoeal stage. Overall this study suggests that red king crab larvae are well adapted to a wide range of pH conditions and are unlikely to be significantly affected by ocean acidification levels projected for the next two centuries.

show abstract

A framework for assessing harvest strategy choice when considering multiple interacting fisheries and a changing environment: The example of eastern Bering Sea crab stocks

Cited by 10 publications

References 43 publications

Incorporating knowledge of changes in climatic, oceanographic and ecological conditions in Canadian stock assessments

Incorporating knowledge of changes in climatic, oceanographic and ecological conditions in Canadian stock assessments

Using an EBFM lens to guide the management of marine biological resources under changing conditions

Effects of ocean acidification on red king crab larval survival and development

Contact Info

Product

Resources

About