scholarly journals Applied Fisheries Oceanography: Ecosystem Indicators of Ocean Conditions Inform Fisheries Management in the California Current

Oceanography ◽  
2014 ◽  
Vol 27 (4) ◽  
pp. 80-89 ◽  
Author(s):  
William Peterson ◽  
◽  
Jennifer Fisher ◽  
Jay Peterson ◽  
Cheryl Morgan ◽  
...  
Keyword(s):  
Fisheries Management ◽  
California Current ◽  
Ecosystem Indicators ◽  
Ocean Conditions ◽  
Fisheries Oceanography

scholarly journals A Case Study in Connecting Fisheries Management Challenges With Models and Analysis to Support Ecosystem-Based Management in the California Current Ecosystem

2021 ◽  
Vol 8 ◽  
Author(s):  
Desiree Tommasi ◽  
Yvonne deReynier ◽  
Howard Townsend ◽  
Chris J. Harvey ◽  
William H. Satterthwaite ◽  
...  
Keyword(s):  
Fisheries Management ◽  
West Coast ◽  
California Current ◽  
Fishing Communities ◽  
Target Species ◽  
Ecosystem Models ◽  
Protected Species ◽  
Forage Species ◽  
The U.S

One of the significant challenges to using information and ideas generated through ecosystem models and analyses for ecosystem-based fisheries management is the disconnect between modeling and management needs. Here we present a case study from the U.S. West Coast, the stakeholder review of NOAA’s annual ecosystem status report for the California Current Ecosystem established by the Pacific Fisheries Management Council’s Fisheries Ecosystem Plan, showcasing a process to identify management priorities that require information from ecosystem models and analyses. We then assess potential ecosystem models and analyses that could help address the identified policy concerns. We screened stakeholder comments and found 17 comments highlighting the need for ecosystem-level synthesis. Policy needs for ecosystem science included: (1) assessment of how the environment affects productivity of target species to improve forecasts of biomass and reference points required for setting harvest limits, (2) assessment of shifts in the spatial distribution of target stocks and protected species to anticipate changes in availability and the potential for interactions between target and protected species, (3) identification of trophic interactions to better assess tradeoffs in the management of forage species between the diet needs of dependent predators, the resilience of fishing communities, and maintenance of the forage species themselves, and (4) synthesis of how the environment affects efficiency and profitability in fishing communities, either directly via extreme events (e.g., storms) or indirectly via climate-driven changes in target species availability. We conclude by exemplifying an existing management process established on the U.S. West Coast that could be used to enable the structured, iterative, and interactive communication between managers, stakeholders, and modelers that is key to refining existing ecosystem models and analyses for management use.

Shearwaters as ecosystem indicators: Towards fishery-independent metrics of fish abundance in the California Current

2015 ◽  
Vol 146 ◽  
pp. 109-120 ◽  
Author(s):  
Shannon E. Lyday ◽  
Lisa T. Ballance ◽  
David B. Field ◽  
K. David Hyrenbach
Keyword(s):  
California Current ◽  
Fish Abundance ◽  
Ecosystem Indicators

scholarly journals Indicators as a means of communicating knowledge

2005 ◽  
Vol 62 (3) ◽  
pp. 606-611 ◽  
Author(s):  
Poul Degnbol
Keyword(s):  
Fisheries Management ◽  
Local Ecological Knowledge ◽  
Ecosystem Approach ◽  
Decision Making Process ◽  
Ecological Knowledge ◽  
Translation Process ◽  
Ecosystem Indicators ◽  
Per Se ◽  
Management Institutions ◽  
Shared Understandings

Abstract Indicators represent the link between objectives and action in management. The identification of ecosystem indicators must therefore be embedded in the decision-making process. Fisheries management can only be effective if the measures are considered legitimate by stakeholders. The choice of indicators to guide management should not be evaluated from a technical perspective alone, but also in relation to their effectiveness in communicating knowledge. More specifically, indicators should serve as a communication bridge between different knowledge discourses. Reference is often made to “local ecological knowledge” as a source that should be integrated in the process for management to be legitimate. However, while extensive studies have been made on local ecological knowledge per se, few have addressed the issue of its integration into co-management institutions with research-based knowledge. The challenge is consequently to identify indicators that have both research-based validity and reflect features that correspond to stakeholder knowledge, while relating to shared understandings of objectives and actions. This challenge is discussed from a developing-countries perspective. Problems and possible ways forward are illustrated on the basis of experiences from a range of case studies of knowledge discourses regarding living aquatic resources in southeast Asia and southern Africa. The studies have shown that the different knowledge discourses, and candidate indicators therein, relating to a specific ecosystem may be identified and characterized. Often, however, such indicators will have very little in common across knowledge discourses, and the differences cannot be overcome through a simple translation process. The perspectives of formal research-based knowledge and of fishers differ systemically, reflecting the different interests and scales of observation between the two parties. Also, fishers focus on a wider agenda than research alone, on allocation problems and conflicts among users. Allocation/access issues must therefore be addressed as an integral aspect of an ecosystem approach if management is to be effective.

Wintertime ocean conditions synchronize rockfish growth and seabird reproduction in the central California Current ecosystem

2010 ◽  
Vol 67 (7) ◽  
pp. 1149-1158 ◽  
Author(s):  
Bryan A. Black ◽  
Isaac D. Schroeder ◽  
William J. Sydeman ◽  
Steven J. Bograd ◽  
Peter W. Lawson
Keyword(s):  
Time Series ◽  
Principal Components Analysis ◽  
Principal Components ◽  
Southern Oscillation ◽  
California Current ◽  
Data Set ◽  
Central California ◽  
Components Analysis ◽  
Ocean Conditions ◽  
Upwelling Index

Chronologies developed from annual growth-increment widths of splitnose rockfish ( Sebastes pinniger ) and yelloweye rockfish ( Sebastes ruberrimus ) otoliths were compared with time series of lay date and fledgling success for the common murre ( Uria aalge ) and Cassin’s auklet ( Ptychoramphus aleuticus ) in the north-central California Current. All time series were exactly dated and spanned 1972 through 1994. In a principal components analysis, the leading principal component (PC1bio) accounted for 64% of the variance in the data set. By entering the upwelling index, the Northern Oscillation index, sea surface temperatures, and the multivariate ENSO (El Niño Southern Oscillation) index into principal components analysis, a time series of environmental variability PC1env was developed for each month of the year. Over the interval 1972 through 1994, PC1bio most strongly correlated with PC1env for February and, to a lesser extent, January and March. Moreover, when each of the six biological time series was related to the 12 PC1env through stepwise multiple regression, February was always the most significant (p < 0.01). The same was true if upwelling index was substituted for PC1env. As upper-trophic predators, rockfish and seabirds independently corroborate that wintertime ocean conditions are critical for productivity in the California Current ecosystem.

scholarly journals Quantitative ecosystem indicators for fisheries management

2005 ◽  
Vol 62 (3) ◽  
pp. 307-310 ◽  
Author(s):  
Philippe M. Cury ◽  
Villy Christensen
Keyword(s):  
Fisheries Management ◽  
Ecosystem Indicators

scholarly journals Experiments with Seasonal Forecasts of ocean conditions for the Northern region of the California Current upwelling system

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Samantha A. Siedlecki ◽  
Isaac C. Kaplan ◽  
Albert J. Hermann ◽  
Thanh Tam Nguyen ◽  
Nicholas A. Bond ◽  
...  
Keyword(s):  
California Current ◽  
Northern Region ◽  
Seasonal Forecasts ◽  
Upwelling System ◽  
Ocean Conditions
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