Coarse woody habitat does not predict largemouth bass young of year mortality during the open-water season

Ziegler, Jacob P.; Dassow, Colin J.; Jones, Stuart; Ross, Alexander J.; Solomon, Christopher T.

doi:10.1139/cjfas-2018-0050

Cited by 7 publications

(6 citation statements)

References 74 publications

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“…The observed decline may have been caused by lower roach activity or the reduced use of sublittoral habitats after wood additions and in response to the elevated numbers in predators ( 43 ). Additionally, the refuge function of coarse woody habitats ( 27 ) might be less strong or universal and depends on its structural complexity ( 28 , 43 ). Supplemented woody habitats might have even facilitated predation, because predator-prey interactions and predation rates change with habitat structure and are often concentrated at the edge of complex habitats ( 30 , 44 ).…”

Section: Convoluted Effects Of Woody Habitat Additionsmentioning

confidence: 99%

“…An alternative strategy is directly managing habitat structure by introducing coarse woody habitats ( 23 , 24 ), an important functional habitat for different life stages in many fish species ( 25 ). However, in lakes, it has remained unclear whether adding coarse woody habitats can effectively increase fish abundance through either improved reproduction ( 26 ) or provision of refuge benefits ( 23 , 27 ) that reduce juvenile mortality ( 28 ), or if the practice simply alters fish distributions by attraction effects ( 29 ) and habitat partitioning ( 23 ) without increasing overall abundance ( 23 , 30 ).…”

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confidence: 99%

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Ecosystem-based management outperforms species-focused stocking for enhancing fish populations

Radinger

Matern

Klefoth

et al. 2023

Science

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Ecosystem-based management is costly. Therefore, without rigorously showing that it can outperform traditional species-focused alternatives, its broad-scale adoption in conservation is unlikely. We present a large-scale replicated and controlled set of whole-lake experiments in fish conservation (20 lakes monitored over 6 years with more than 150,000 fish sampled) to examine the outcomes of ecosystem-based habitat enhancement (coarse woody habitat addition and shallow littoral zone creation) versus a widespread, species-focused alternative that has long dominated fisheries management practice (i.e., fish stocking). Adding coarse woody habitats alone did not, on average, enhance fish abundance, but creating shallow water habitat consistently did, especially for juvenile fish. Species-focused fish stocking completely failed. We provide strong evidence questioning the performance of species-focused conservation actions in aquatic ecosystems and instead recommend ecosystem-based management of key habitats.

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Section: Convoluted Effects Of Woody Habitat Additionsmentioning

confidence: 99%

mentioning

confidence: 99%

Ecosystem-based management outperforms species-focused stocking for enhancing fish populations

Radinger

Matern

Klefoth

et al. 2023

Science

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“…More broadly, fisheries dominated by catch and release received relatively little attention in the models that we reviewed but are becoming increasingly common in some contexts; more attention is needed on the ways in which these changes feed back to influence other components of the SES including population structure, angler satisfaction and management options (Hessenauer, Vokoun, Davis, Jacobs, & O’Donnell, 2018; Miranda et al., 2017; Sass & Shaw, 2019). Finally, the interactions between habitat, fish and people probably deserve more exploration, for instance in defining empirically supported relationships between habitat characteristics and fish population dynamics and in exploring the social processes that lead to degradation, conservation or improvement of habitat quality (Sass, Rypel, & Stafford, 2017; Sass et al., 2019; Ziegler, Dassow, Jones, Ross, & Solomon, 2019).…”

Section: Resultsmentioning

confidence: 99%

Frontiers in modelling social–ecological dynamics of recreational fisheries: A review and synthesis

et al. 2020

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Recreational fisheries are culturally and economically important around the world. Recent research emphasizes that understanding and managing these systems requires a social–ecological perspective. We systematically reviewed quantitative social–ecological models of marine and freshwater recreational fisheries to summarize their conceptualization of social, ecological, and social–ecological dynamics and identify research frontiers. From a candidate set of 626 studies published between 1975 and 2018, 49 met criteria for inclusion in our review. These studies, though diverse in terms of focal species and processes considered, were geographically limited to a few locations and ignored large regions of the globe where recreational fishing is important. There were also important gaps in the social and ecological processes that were included in published models. Reflecting on these patterns in the context of previous conceptual frameworks, we define five key frontiers for future work: 1) exploring the implications of social and behavioural processes like heuristics, social norms, and information sharing for angler decisions and fishery dynamics; 2) modelling governance with more realistic complexity; 3) incorporating ideas from resilience thinking and complex adaptive systems, including slow variables, destabilizing feedbacks, surprises and diversity; 4) considering key ideas in fisheries systems, including spatial and temporal effort dynamics, catch hyperstability, and stocking; and 5) thinking synthetically about the models that we use to describe social–ecological dynamics in recreational fisheries, via explicit comparisons and formal integration with data. Exploration of these frontiers, while remembering the distinction between model complexity and model usefulness, will improve our ability to understand and sustain recreational fisheries.

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“…generality of the effectiveness of structural habitat enhancements such as those used in fisheries management has recently been brought into question (Roth et al, 2007;Sass et al, 2019Sass et al, , 2023Smokorowski et al, 2021;Ziegler et al, 2019).…”

Section: Local Extinctionmentioning

confidence: 99%

Managing aquatic habitat structure for resilient trophic interactions

Ward

Tunney

McCann

2023

Ecological Applications

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Structural habitat (the three-dimensional arrangement of physical matter, abiotic and biotic, at a location) is a foundational element for the resilience and maintenance of biodiversity, yet anthropogenic development is driving the global simplification of aquatic environments. Resource managers regularly seek to conserve aquatic food webs by increasing structural habitat complexity with expected benefits to fisheries; however, the global effectiveness of such actions is unclear. Our synthesis and theoretical analyses found that the response of a consumer-resource interaction (predatory sportfish and forage fish prey) to the addition of prey refuge habitat differed among systems with low and high rates of biomass transfer from resource to consumer (i.e., biomass potential); stabilization was not the rule. Greater prey refuge habitat availability tended to stabilize systems characterized by high biomass potential while simultaneously increasing consumer densities. In contrast, increasing prey refuge habitat availability in systems characterized by low biomass potential tended to mute energy transfer and moved consumer densities toward local extinction.Importantly, biomass potential and prey refuge can have antagonistic effects on stability and relative consumer densities, and it is therefore important to consider the local conditions of a system when using habitat manipulation as a management measure. Further development of our context-dependent perspective to whole food webs, and across different environments, may help to guide structural habitat management to better restore and protect aquatic ecosystems.

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Coarse woody habitat does not predict largemouth bass young of year mortality during the open-water season

Cited by 7 publications

References 74 publications

Ecosystem-based management outperforms species-focused stocking for enhancing fish populations

Ecosystem-based management outperforms species-focused stocking for enhancing fish populations

Frontiers in modelling social–ecological dynamics of recreational fisheries: A review and synthesis

Managing aquatic habitat structure for resilient trophic interactions

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