Special Section Overview: Effects of Ecosystem Change on North American Percid Populations DOI
Hadley I. A. Boehm, Daniel A. Isermann,

Mark J. Ermer

et al.

North American Journal of Fisheries Management, Journal Year: 2022, Volume and Issue: 42(3), P. 477 - 483

Published: June 1, 2022

Abstract Walleye Sander vitreus , Sauger S. canadensis and Yellow Perch Perca flavescens (referred to as percids herein) are collectively among the most culturally ecologically important fish species in North America. As ecosystems change response environmental drivers, such climate change, nutrient loading, invasive species, there is a need understand how percid populations respond these changes. To address this need, symposium was held during 81st Annual Midwest Fish Wildlife Conference bring fishery scientists managers together describe discuss population responses ecosystem change. Prevailing themes included challenge of identifying mechanisms responsible for population‐level changes, developing strategies adaptively manage resilient fisheries, consideration scale, context, methods when interpreting variable results. Given uncertainty changes affect populations, participants emphasized importance communicating uncertainties stakeholders, implementing data‐driven management strategies, setting realistic goals, revising actions an adaptive framework. There universal agreement on both necessity facilitating constructive engagement stakeholders cooperative decision making. Symposium identified knowledge gaps discussed future efforts build our current understanding including continuation long‐term monitoring, improved standardization evaluation metrics, experiments identify causal relationships, development more robust analytical methods, use historical data sources, refining techniques realistically convey options stakeholders.

Language: Английский

Resist‐accept‐direct (RAD) considerations for climate change adaptation in fisheries: The Wisconsin experience DOI Creative Commons
Zachary S. Feiner, Aaron D. Shultz, Greg G. Sass

et al.

Fisheries Management and Ecology, Journal Year: 2022, Volume and Issue: 29(4), P. 346 - 363

Published: April 5, 2022

Abstract Decision‐makers in inland fisheries management must balance ecologically and socially palatable objectives for ecosystem services within financial or physical constraints. Climate change has transformed the potential range of available. The Resist‐Accept‐Direct (RAD) framework offers a foundation responding to climate‐induced modification; however, trajectories current practices be understood improve future decisions. Using Wisconsin's diverse as case study, strategies recreational subsistence response climate were reviewed RAD framework. Current largely focus on resist actions, while may need shift toward accept direct actions. A participatory adaptive co‐production policies between state tribal agencies could prioritise lakes appropriate action, with goal providing landscape fishing opportunities. This knowledge represents process social learning requiring substantial investments funding time.

Language: Английский

Citations

33
Ecological and social strategies for managing fisheries using the Resist‐Accept‐Direct (RAD) framework DOI
Abigail J. Lynch, Frank J. Rahel,

Doug Limpinsel

et al.

Fisheries Management and Ecology, Journal Year: 2022, Volume and Issue: 29(4), P. 329 - 345

Published: April 21, 2022

Abstract Fisheries management is a complex task made even more challenging by rapid and unprecedented socioecological transformations associated with climate change. The Resist‐Accept‐Direct (RAD) framework can be useful tool to support fisheries in facing the high uncertainty variability aquatic ecosystem transformations. Here, RAD strategies are presented address ecological goals for ecosystems social fisheries. These mapped on controllability matrix which explores ability guide system's behaviour towards desired state based responsiveness societal receptivity Understanding improving of systems help managers maintain broadest suite available strategies.

Language: Английский

Citations

18
Structural Habitat in Lakes and Reservoirs: Physical and Biological Considerations for Implementation DOI
Greg G. Sass, Stephanie L. Shaw, Carly C. Fenstermacher

et al.

North American Journal of Fisheries Management, Journal Year: 2022, Volume and Issue: 43(2), P. 290 - 303

Published: July 15, 2022

Abstract In response to declines in coarse woody habitat (CWH) and fish productivity natural lakes reservoirs, agencies stakeholders have used artificial enhancements slow or reverse the effects of loss from aging shoreline development. Given that reservoirs differ physical biological conditions could influence enhancement outcomes, a framework is needed guide management expectations for CWH replacement under different ecosystem contexts. We review contexts structural use preliminary results case studies lake Wisconsin two Illinois illustrate importance these contexts, provide recommendations deployments consider characteristics. Because their on trophic transfer efficiency, status turbidity are important reservoirs. Habitat large must also contend with high nutrient loading, water level fluctuations, longitudinal gradients conditions. Preliminary experiment illustrated recipient community, rates varying among species. The demonstrated how magnitude change (i.e., effect size) after can (1) between additions an oligotrophic eutrophic, turbid reservoir (2) by position within reservoir. functions services targeted rehabilitation guidance as which features will shape strength, direction, duration response. Future whole‐ecosystem manipulations across wider range environmental responses, strength increases should be compared increased harvest efficiency.

Language: Английский

Citations

18
Biological Invasions in Fresh Waters: Micropterus salmoides, an American Fish Conquering the World DOI Open Access
Maria Letizia Costantini, Jerzy Piotr Kabala, Simona Sporta Caputi

et al.

Water, Journal Year: 2023, Volume and Issue: 15(21), P. 3796 - 3796

Published: Oct. 30, 2023

Biological invasions in fresh waters cause biodiversity loss and impairment of ecosystem functioning. Many freshwater invasive species are fish, including the largemouth bass Micropterus salmoides, which is considered one 100 worst world. Fast individual growth rates, high dispersal ability, ecological tolerance, trophic plasticity among characteristics contributing to its success. The negative impact M. salmoides on littoral fish communities believed be mitigated by habitat structural complexity resulting from aquatic vegetation coarse woody debris, while main limits spread seem strong water flows turbidity, impairs visual predation. Together with human overexploitation potential antagonists, alteration could result having seriously detrimental effects native biodiversity. purpose this study critically review life history ecology ecosystems outside North America, anthropogenic activities spread. This will highlight environmental factors that favor or limit success, helping identify management measures might mitigate

Language: Английский

Citations

10
Invasive control and native restoration: Directing ecosystem transformation through purposeful food web manipulations DOI Creative Commons
Joseph T. Mrnak,

Martin Wilkinson,

Logan W. Sikora

et al.

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

Published: Jan. 22, 2025

ABSTRACT Ecosystems are abruptly changing due to invasive species and global climate change. In lakes, Rainbow Smelt Osmerus mordax can cause negative ecosystem effects through competitive predatory interactions with native leading food web shifts away from dominance, altered zooplankton communities, the decline or extirpation of cool coldwater fishes. We conducted two whole-lake removals simultaneous introductions Cisco Coregonus artedi stocking. About 327 1.6 adult Smelt/ha were removed about 45 Cisco/ha stocked over 4 years into experimental lakes. one system, Yellow Perch Perca flavscens relative abundance density significantly increased by 556% 143% post-manipulation, respectively. other Walleye Sander vitreus 26% became consistently present in pelagic zone post-manipulation (allowing for estimation). decreased >85% both The ecosystems shifted dominance while insignificant components webs. these intensive manipulations, we applied Resist–Accept–Direct (RAD) adaptation framework test an applicable ecological strategy used panarchy theory as ecologically grounded pathway purposefully direct transformation. this holistic management better understand manage undesired change—“food thinking.” context our study, directed towards structures, interactions, processes, which mitigated driven effects.

Language: Английский

Citations

0
The decline of walleye populations: an ecological tipping point? DOI Creative Commons
Greg G. Sass

FACETS, Journal Year: 2025, Volume and Issue: 10, P. 1 - 17

Published: Jan. 1, 2025

Walleye/ogaa ( Sander vitreus (Mitchill)) (hereafter, walleye; ogaa = Ojibwe translation) populations have historically supported important multi-use, harvest-oriented fisheries. Despite intensive management, walleye declined in the midwestern United States raising concerns about sustainability of species. Numerous factors been implicated population declines, including climate change, habitat loss, invasive species, species-interactions, production overharvest (i.e., harvest consistently exceeding annual production), and changing angler behaviors. These negatively influenced natural recruitment contributed to depensatory dynamics. I provide a review perspective suggesting that current trajectory is at or nearing an ecological tipping point. Although fish are often considered compensatory density-dependent), appear prone depensation positive density dependence). My suggest management for misaligned. A change towards resource focus using ecosystem-based fisheries recognition as social–ecological systems needed conservation. If ensues, persistence will likely be further threatened because many drivers outside managerial control, those commonly used within control seemingly ineffective sustaining rehabilitating naturally reproducing populations.

Language: Английский

Citations

0
Healing Ogaa (Walleye Sander vitreus ) Waters: Lessons and Future Directions for Inland Fisheries Rehabilitation DOI
Holly S. Embke, Zachary S. Feiner, Gretchen J. A. Hansen

et al.

Reviews in Fisheries Science & Aquaculture, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 19

Published: April 9, 2025

Language: Английский

Citations

0
A Resist‐Accept‐Direct decision‐support tool for walleye Sander vitreus (Mitchill) management in Wisconsin DOI
Colin J. Dassow,

Alex W. Latzka,

Abigail J. Lynch

et al.

Fisheries Management and Ecology, Journal Year: 2022, Volume and Issue: 29(4), P. 378 - 391

Published: April 3, 2022

Abstract Large‐scale modelling and prediction provide insight into general influences of climate change on inland recreational fisheries; however, small‐scale dynamics local expertise will be key in developing explicit goals for managing fisheries as the changes. The resist‐accept‐direct (RAD) framework encompasses entire decision space managers consider when addressing their system, but to decide whether resist, accept or direct, need tools understand how specific waterbodies influenced by change. Here, a decision‐support tool was developed applied walleye fishery Wisconsin, USA an example link RAD real‐world management large fishery. broadscale results described here, indicating widespread shift away from resist strategies mid‐century, can used inform decisions about accept, direct populations.

Language: Английский

Citations

15
Case study: Applying the resist–accept–direct framework to an Ojibwe Tribe's relationship with the natural world DOI Creative Commons
Aaron D. Shultz,

Mark A. Luehring,

Adam Ray

et al.

Fisheries Management and Ecology, Journal Year: 2022, Volume and Issue: 29(4), P. 392 - 408

Published: May 27, 2022

Abstract Ojibwe Tribes' approach to the natural world is guided by original treaties between beings (species and spirits) people who reside in lands now known as United States Canada. Relationships with these beings, such ogaa (walleye Sander vitreus ), are best characterised taking care of a relative/gift for next seven generations Ojibwe. Initial denial treaty rights state government has strongly influenced tribes' relationship their relatives over 100 years. Ogaa stocks reproduction have declined Minocqua Chain Lakes (Wisconsin, USA) last 20 Region‐wide declines been attributed many stressors overharvest state‐licensed anglers, invasive species climate change. Here, we retroactively applied resist–accept–direct (RAD) framework process used create an interjurisdictional rehabilitation plan Lakes. Specifically, cover following: progress date on plan; subsistence, cultural spiritual challenges associated resisting ecosystem change; unforeseen obstacles rehabilitation; re‐evaluation ogaa; unknowns; contingency plans from tribal perspective. Lastly, discuss how RAD could become more useful tribes region.

Language: Английский

Citations

12
Diminishing productivity and hyperstable harvest in northern Wisconsin walleye fisheries DOI
Joseph T. Mrnak, Holly S. Embke,

Martin Wilkinson

et al.

Canadian Journal of Fisheries and Aquatic Sciences, Journal Year: 2024, Volume and Issue: 81(12), P. 1650 - 1665

Published: Aug. 1, 2024

Managing fisheries in a changing socio-ecological environment may require holistic approaches for identifying and adapting to novel ecosystem dynamics. Using 32 years of Ceded Territory Wisconsin (CTWI) walleye ( Sander vitreus) data, we estimated production P), biomass B), turnover P/B), yield Y), over Y/P) tested hyperstability yield. Most CTWI populations showed low P B, Y/P < 1 . Yet, overharvest > 1) was prevalent among recruitment-based management (natural recruitment (NR), sustained only by stocking, combination). Production, P/B have declined NR populations, while Y remained constant. Walleye hyperstable along gradient all fishery types (i.e., angling only, angling/tribal harvest combined). Diminishing productivity be jointly contributing observed declines. We classified lakes into groups low, moderate, or high vulnerability based on dynamics identify that benefit from declines maintain increase the adaptive capacity walleye.

Language: Английский

Citations

2