Spatiotemporal dynamics of Atlantic reef fishes off the southeastern U.S. coast

Ecosphere, Journal Year: 2024, Volume and Issue: 15(6)

Published: June 1, 2024

Abstract Understanding the spatiotemporal dynamics of fish species is a central concern in ecology and crucial for guiding management conservation efforts. We constructed joint distribution model (JSDM) to simultaneously estimate distributions densities 21 reef southeastern United States (SEUS). The separately estimates encounter probability positive density, accounts unobserved spatial variation using latent factors, where correlations among are induced. applied video data collected from large‐scale, fishery independent survey. A clustering method was results JSDM group based on synchrony density. found strong associations most species. However, did exhibit differences occupied habitat that varied with latitude and/or depth. Within their area habitat, almost all share similar pattern average some species, annual were less correlated expected perhaps due differing responses underlying drivers. Some show significant declines abundance, example, black sea bass, red porgy, blueline tilefish, while small number showed evidence shifts distribution, bass. findings suggest strategies may be limited utility reducing bycatch these highly mixed fisheries high patterns Species‐specific environmental change also influence structure assemblages. This work suggests attention needed lesser known as they showing declining trends abundance.

Language: Английский

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Evidence for declining numbers of large Dolphinfish in the western North Atlantic

North American Journal of Fisheries Management, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

ABSTRACT Objective Our objective was to use annual data on recreational fishing effort and the number of large Dolphinfish Coryphaena hippurus caught in North Carolina determine if their abundance has changed over recent decades. Methods We gathered citation-sized (≥15.9 kg) Wahoo Acanthocybium solandri (≥18.1 from Division Marine Fisheries National Services’s Recreational Information Program. generated species-specific values for trips per citation caught. Linear models were fit these by regressing them against year. Results An analysis covariance model with a separate regression slope each species provided best set 2000 2023 revealed meaningful roughly fourfold increase required catch Dolphinfish, while no trend observed Wahoo. Conclusions A substantial suggests that individuals this declined. In context such Wahoo, possible confounding causes (e.g., changing social norms) are unlikely explain our finding. Causes decline likely related increased exploitation stock.

Language: Английский

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Applications of species distribution modeling and future needs to support marine resource management

ICES Journal of Marine Science, Journal Year: 2025, Volume and Issue: 82(3)

Published: Feb. 25, 2025

Abstract Fisheries science agencies are responsible for informing fisheries management and ocean planning worldwide, often requiring scientific analysis actions across multiple spatial scales. For example, catch limits typically defined annually over regional scales, fishery bycatch rules at fine scales on daily to annual time aquaculture energy lease areas decades subregional permitting intermediate Similarly, these activities require synthesizing monitoring data mechanistic knowledge operating different resolutions domains. These needs drive a growing role models that predict animal presence or densities including daily, seasonal, interannual variation, called species distribution/density (SDMs). SDMs can inform many needs; however, their development usage haphazard. In this paper we discuss various ways have been used in stock, habitat, protected species, ecosystem as well marine planning, survey optimization, an interface with climate models. We conclude discussion of future directions, focusing information current development, highlight avenues furthering the community practice around SDM use.

Language: Английский

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Spatiotemporal dynamics and habitat use of red snapper (Lutjanus campechanus) on the southeastern United States Atlantic continental shelf

Fisheries Research, Journal Year: 2024, Volume and Issue: 281, P. 107200 - 107200

Published: Oct. 14, 2024

Language: Английский

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Climate-readiness of fishery management procedures with application to the southeast US Atlantic

ICES Journal of Marine Science, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 22, 2024

Abstract Global climate change threatens the assumption of stationarity inherent in many fisheries management decisions. This heightens importance developing strategies that are robust to future uncertainty. Management strategy evaluation (MSE) is a framework which procedures (MPs) can be developed and tested using closed-loop simulation. We explored performance various model-based empirical MPs with nonstationary projections for three commercially recreationally important fish stocks southeast US Atlantic. Using openMSE, we candidate MP across designed emulate plausible conditions, including regime shifts, nonstationarity, observation error shifts survey index. Candidate was primarily measured based on its ability maintain healthy stock biomass. Results this MSE demonstrate several may better able adapt dynamics compared traditional employ full age-structured assessments, though struggle biomass when facing artificial index shifts. Relative versus varied by climate-change scenario. These findings highlight value adaptive hold climate-ready management.

Language: Английский

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Spawning Potential Ratio Can Provide Reference Points for Fishery Management That Are Robust to Environmental Variability

Fishes, Journal Year: 2024, Volume and Issue: 9(12), P. 497 - 497

Published: Dec. 3, 2024

Biological reference points are key quantities provided by stock assessments and used in fishery management for evaluating status setting future catch levels. For many fisheries worldwide, biological based on the spawning potential ratio (SPR), which measures per-recruit reproductive output as a function of fishing rate relative to that when is absent. SPR depends characteristics stock, turn can be influenced environment. A often proxy provides maximum sustainable yield. Here, we evaluate variability (F40) an 40%, commonly limit point, given plausible characteristics. Using eight case-study species from marine waters off southeast United States, consider both simple random directional variability, might result climate change. We test sensitivity F40 various life-history traits compute distributions F40, expected those traits. Based distributions, probabilities overfishing target (here, 75%F40) prevailing conditions without considering consistent with common, current practice. Analyses also considered 30% 50% generality conclusions. Results support SPR-reference generally robust levels induced environmental nonstationarity associated rates provide meaningful buffers prevent overfishing.

Language: Английский

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Integrating fisheries independent surveys to account for the spatiotemporal dynamics of spiny dogfish (Squalus acanthias) in US waters of the northwest Atlantic

Fisheries Research, Journal Year: 2024, Volume and Issue: 281, P. 107173 - 107173

Published: Sept. 20, 2024

Language: Английский

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