A revised diet matrix to improve the parameterization of a West Florida Shelf Ecopath model for understanding harmful algal bloom impacts

Perryman, Holly A.; Tarnecki, Joseph H.; Grüss, Arnaud; Babcock, Elizabeth A.; Sagarese, Skyler R.; Ainsworth, Cameron H.; DiLeone, Alisha M. Gray

doi:10.1016/j.ecolmodel.2019.108890

Cited by 2 publications

(3 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previous attempts to assess red tide impacts on the WFS ecosystem used non-spatial EwE models of the system that required the input of red tide removals via a pseudo-fishing fleet and a red tide severity index trend as an effort forcing time series 27 , 28 , 90 . By specifying the baseline red tide removals and a severity index trend in EwE, the mortality rates are thereby forced by the user and not an emergent property of the model.…”

Section: Discussionmentioning

confidence: 99%

“…Four ecological indicators (biomass and catch-based) were investigated to describe the ecosystem effects of red tides. Biomass-based indicators may be useful to describe red tide effects across different components of the ecosystem 28 whereas catch-based indicators reflect the impacts on fisheries 80 , 81 . We included three biomass-based indicators: total biomass of species (B T ) (t·km −2 ), biomass of harvested (commercial and recreational) species (B har ) (t·km −2 ), and biomass loss due to red tide (B loss ) (t·km −2 ) and one fishery indicator as the total catch (C T ) (t·km −2 ·year −1 ) summed over all species and fleets.…”

Section: Methodsmentioning

confidence: 99%

“…For instance, Gray DiLeone and Ainsworth 27 concluded that red tides can lead to changes in community structure and cascading effects through reduced predator abundances, resulting in predation mortality release for piscivores, planktivores, and detritivores, and triggering an increase in the biomass of these guilds. However, Perryman et al 28 indicated that elevated red tide mortality does not impact the ecosystem structure, but it could have meaningful negative effects on natural mortality rates and biomass dynamics of marine species. Although these studies represented a step forward to understand ecosystem impacts due to red tides, their major limitation was the lack of a spatiotemporal framework in which red tides were explicitly considered along with species distribution patterns to comprehensively evaluate their impacts.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Evaluating red tide effects on the West Florida Shelf using a spatiotemporal ecosystem modeling framework

Vilas

Buszowski

Sagarese

et al. 2023

Sci Rep

View full text Add to dashboard Cite

The West Florida Shelf (WFS), located in the eastern Gulf of Mexico, fosters high species richness and supports highly valuable fisheries. However, red tide events occur regularly that can impact fisheries resources as well as ecosystem state, functioning, and derived services. Therefore, it is important to evaluate and quantify the spatiotemporal impacts of red tides to improve population assessments, mitigate potential negative effects through management, and better understand disturbances to support an ecosystem-based management framework. To model red tide effects on the marine community, we used Ecospace, the spatiotemporal module of the ecosystem modeling framework Ecopath with Ecosim. The inclusion of both lethal and sublethal response functions to red tide and a comprehensive calibration procedure allowed to systematically evaluate red tide effects and increased the robustness of the model and management applicability. Our results suggest severe red tide impacts have occurred on the WFS at the ecosystem, community, and population levels in terms of biomass, catch, and productivity. Sublethal and indirect food-web effects of red tide triggered compensatory responses such as avoidance behavior and release from predation and/or competition.. This study represents a step forward to operationalize spatiotemporal ecosystem models for management purposes that may increase the ability of fisheries managers to respond more effectively and be more proactive to episodic mortality events, such as those caused by red tides.

show abstract

Section: Discussionmentioning

confidence: 99%