An updated model of potential habitat for northern stock Pacific Sardine (Sardinops sagax) and its use for attributing survey observations and fishery landings DOI Creative Commons
Juan P. Zwolinski,

David A. Demer

Fisheries Oceanography, Journal Year: 2023, Volume and Issue: 33(3)

Published: Dec. 18, 2023

Abstract Three years after the 2015 collapse of northern stock Pacific Sardine that is predominantly located off west coast United States, acoustic‐trawl (A‐T) surveys documented an increase in presence and persistence southern coastal Southern California. Then 2020, biomass was landed Mexico attributed to exceeded estimated for entire stock. To investigate if landings were incorrectly classified, we revisit a model northern‐stock potential habitat associated range sea‐surface temperature ( SST ) used apportion A‐T survey data monthly fishery two stocks, respectively. We update probabilistic with on sardine‐egg absence concomitant satellite‐sensed chlorophyll‐ concentration through 2019 apply new more accurately attribute observations or The addition recent data, increased coverage s between 15°C 17°C, improves accuracy spatial precision attribution. attribution critically dependent temporal coincidence environmental should be corroborated other characteristics indicative biological isolation such as separation, distinct spawning areas seasons, uncorrelated demographics.

Language: Английский

Fishery management strategies for Red Snapper in the southeastern U.S. Atlantic: A spatial population model to compare approaches DOI
Kyle W. Shertzer, Scott Crosson, Erik H. Williams

et al.

North American Journal of Fisheries Management, Journal Year: 2024, Volume and Issue: 44(1), P. 113 - 131

Published: Jan. 20, 2024

Abstract Objective Red Snapper Lutjanus campechanus is an iconic species in the southeast U.S. Atlantic Ocean, sought by both commercial and recreational fleets. Five stock assessments over past quarter century have shown to be experiencing overfishing. Highly restricted landings since 2010 been insufficient end overfishing because fishing effort not specific but rather applies generally a complex of reef‐associated species. Consequently, are discarded as bycatch when regulations prohibit their retention, many fish die from hook injury, barotrauma, or depredation. Methods Here we developed spatial population model multispecies fishery that captures them Atlantic. We then simulated compared 25 different management measures fall broadly into categories gear modifications, discard mortality mitigation, size limits, approaches, temporal approaches. Criteria for comparison address goals decreasing dead discards, rebuilding age structure, increasing spawning biomass. Result found most effective reduced effort, either temporally spatially, benefits could largely obtained focusing on fleet. Discard mitigation (e.g., through use descender devices) displayed wide range effectiveness depending plausible levels reduction, it addressed all practice paired with other measures. A measure combined full retention caught showed greatest potential simultaneously rebuild stock, increase landings, eliminate discards. Conclusion To required law, resource managers should reconsider policy unrestricted private fleet this fishery. The would include increased catch rates, larger landed fish, fewer

Language: Английский

Citations

11
Lessons to be learned by comparing integrated fisheries stock assessment models (SAMs) with integrated population models (IPMs) DOI Creative Commons
Michael Schaub, Mark N. Maunder, Marc Kéry

et al.

Fisheries Research, Journal Year: 2024, Volume and Issue: 272, P. 106925 - 106925

Published: Jan. 5, 2024

Integrated fisheries stock assessment models (SAMs) and integrated population (IPMs) are used in biological ecological systems to estimate abundance demographic rates. The approaches fundamentally very similar, but historically have been considered as separate endeavors, resulting a loss of shared vision, practice progress. We review the two identify similarities differences, with view identifying key lessons that would benefit more generally overarching topic ecology. present case study for each SAM (snapper from west coast New Zealand) IPM (woodchat shrikes Germany) highlight differences similarities. between SAMs IPMs appear be objectives parameter estimates required meet these objectives, size spatial scale populations, differing availability various types data. In addition, up now, typical applied aquatic habitats, while most stem terrestrial habitats. aim assess level sustainable exploitation fish so absolute or biomass must estimated, although some only relative trends. Relative is often sufficient understand dynamics inform conservation actions, which main objective IPMs. small populations concern, where uncertainty can important, conveniently implemented using Bayesian approaches. typically at moderate scales (1 104 km2), possibility collecting detailed longitudinal individual data, whereas large, economically valuable stocks large (104 106 km2) limited There sense data- (or information-) hungry than an because its goal abundance, data rates difficult obtain (often marine) applied. therefore require 'tuning' assumptions IPMs, 'data speak themselves', consequently techniques such weighting model evaluation nuanced being fit disaggregated quantify variation allow richer inference on processes. attempts example by unconditional capture-recapture

Language: Английский

Citations

9
Spatial awareness: Good practices and pragmatic recommendations for developing spatially structured stock assessments DOI Creative Commons
Daniel R. Goethel, Aaron M. Berger, Steven X. Cadrin

et al.

Fisheries Research, Journal Year: 2023, Volume and Issue: 264, P. 106703 - 106703

Published: April 7, 2023

Language: Английский

Citations

20
The use of conceptual models to structure stock assessments: A tool for collaboration and for “modelling what to model” DOI
Carolina V. Minte‐Vera, Mark N. Maunder,

Alexandre Aires‐da‐Silva

et al.

Fisheries Research, Journal Year: 2024, Volume and Issue: 279, P. 107135 - 107135

Published: Aug. 3, 2024

Language: Английский

Citations

5
Application of shape analysis for the identification of pelagic fish stocks DOI Creative Commons
Joana Vasconcelos,

María Cirera,

Ana Rita Vieira

et al.

Hydrobiologia, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 23, 2025

Language: Английский

Citations

0
Black Sea Bass Centropristis striata Year Class Strength and Spatial Extent from Two Long-Term Surveys off the Southeast U.S. Atlantic Coast DOI Creative Commons
Julie L. Vecchio, Margaret W. Finch, Kevin R. Spanik

et al.

Fishes, Journal Year: 2025, Volume and Issue: 10(2), P. 53 - 53

Published: Jan. 28, 2025

The Southeastern U.S. Atlantic coast (North Carolina to Florida, U.S.A.) has undergone considerable environmental change in recent decades, including increasing coastal water temperature and human development. region is also home a diverse suite of exploited reef fish species, the southern stock black sea bass (Centropristis striata). objective current study was compare trends year class strength central location captured by trawls (age 0) traps 2) as well those regional bottom temperature. We found no correlation between age 0 2 abundance when comparing same class, suggesting that numbers trawl-caught juveniles cannot predict number adults available fishery. Larger classes observed were correlated with centers farther south region, while smaller corresponded more northerly abundance. In both traps, strong occurred following years below-average temperatures, series recent, weak correspond higher-than-average temperatures. It unclear whether correlations shifting abundance, strength, indicate range contraction for or movement into areas previously inhabited northern species.

Language: Английский

Citations

0
Decade-scale spatio-temporal variability in maturity of Pacific hake, Merluccius productus, along the US West Coast DOI
Melissa A. Head,

Alicia A. Billings,

Vanessa J. Tuttle

et al.

Environmental Biology of Fishes, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

Citations

0
Landmark-based geometric morphometric and meristic analysis of body shape variation among Indonesian climbing perch Anabas testudineus (Bloch, 1792) populations DOI Creative Commons
Adrian Damora, Muhammad Afrisal, Kunto Wibowo

et al.

The European Zoological Journal, Journal Year: 2025, Volume and Issue: 92(1), P. 454 - 466

Published: March 4, 2025

Language: Английский

Citations

0
Identifying capacity limitations and training needs using a stock assessment game DOI
André E. Punt, Catherine M. Dichmont, Natalie Dowling

et al.

Fisheries Research, Journal Year: 2025, Volume and Issue: 284, P. 107319 - 107319

Published: March 12, 2025

Language: Английский

Citations

0
Marine Heatwaves and Climate‐Driven Warming Impact Availability of Sardine Subpopulations to Northeast Pacific Fishing Ports DOI Creative Commons
Barbara Muhling, Juan P. Zwolinski,

Peter T. Kuriyama

et al.

Fisheries Oceanography, Journal Year: 2025, Volume and Issue: unknown

Published: March 26, 2025

ABSTRACT Changing ocean conditions are leading to spatial redistribution of many marine species, including those that support fisheries. A combination gradual climate trends and shorter‐lived extreme events, such as heatwaves, can change the availability species or stocks fishing ports, impacting communities challenging fisheries management frameworks. Pacific sardine ( Sardinops sagax ) in California Current System currently considered two subpopulations for purposes. They separated from each other using oceanographic conditions, based on assumption subpopulation is associated with different habitats geographic areas. However, heatwaves lead increasingly novel environmental region, habitat‐based assignments may become impractical unrealistic. In this study, we use generalized additive models define sea surface temperature chlorophyll occurrence multiple life stages fishery‐independent surveys conducted System. We then show how distribution across putative be influenced by both heatwaves. Our results highlight potential impacts changing near major landing ports. During recent habitat northern became less available southern trend projected continue through end 21st century. Future shifts challenge practicality separation introduce more uncertainty into

Language: Английский

Citations

0