Piscivore enhancement effects on food webs depend on planktivore body size and species composition in replicated whole lake experiments

DeBoom, Corey S.; Wahl, David H.

doi:10.1007/s10750-014-1885-6

Cited by 6 publications

(4 citation statements)

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“…Numerous management strategies have been implemented to improve growth and size structure of bluegills. These include attempts to reduce density-dependent effects on growth of bluegills by increasing predation via protecting piscivores from harvest or stocking additional piscivores (Otis et al 1998;Schneider and Lockwood 2002;Shroyer et al 2003;DeBoom and Wahl 2014;O'Neal 2017) or by chemical removal of bluegills (Schneider and Lockwood 2002), using harvest restrictions such as creel or minimum length limits to reduce exploitation (Ott et al 2003;Jacobson 2005;Rypel 2015), and using supplemental feeding to improve growth (Berger 1982;Woodard et al 2013;Henderson et al 2019). Except for the latter, most of these strategies have met with variable success.…”

Section: Introductionmentioning

confidence: 99%

Interrelationships among bluegill demographics, predator and competitor abundances and impoundment characteristics

Michaletz

2020

Journal of Freshwater Ecology

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Section: Introductionmentioning

confidence: 99%

Interrelationships among bluegill demographics, predator and competitor abundances and impoundment characteristics

Michaletz

2020

Journal of Freshwater Ecology

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“…In such conditions, large-sized cladocerans are preys of planktivorous fish (Kuczyńska-Kippen 2003 ), which lead to the domination of small-sized species in the planktonic fauna community (Chen et al 2012b ). Therefore, zooplankton grazers cannot control the increasing population of phytoplankton and cyanobacteria bloom (Van Donk et al 1990 ; Skov et al 2003 ; DeBoom and Wahl 2014 ). Zooplankton is a good indicator of ecological status and lake trophy (Chen et al 2012a ; Ejsmont-Karabin 2012 ; Haberman and Haldna 2014 ).…”

Section: Introductionmentioning

confidence: 99%

Zooplankton changes during bottom-up and top-down control due to sustainable restoration in a shallow urban lake

Rosińska

Romanowicz-Brzozowska

Kozák

et al. 2019

Environ Sci Pollut Res

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Long-term cyanobacterial blooms and hypereutrophic state have been typical for the shallow, urban Swarzędzkie Lake for many years. Diversion of sewage did not change its trophic status, so restoration began in autumn 2011 using the sustainable approach based on three methods. The aim of the study was to analyse how sustainable restoration affects zooplankton. We hypothesised that bottom-up and top-down methods reconstructed zooplankton composition. Thus, the abundance of large-size cladocerans increased and controlled phytoplankton effectively. The elimination of cyanobacteria bloom, the decrease of rotifer abundance and the twofold increase of filter-feeder effectiveness were observed in summer 2012. However, high phosphorus concentration, lack of regular cyprinid removal and insufficient fish stocking together with high temperature prevented zooplankton from controlling cyanobacteria bloom in summer 2013. Rotifer domination with high trophy species was noted, as before restoration. The number of rotifers decreased in 2014, while crustaceans increased due to the significant decrease of nutrient concentrations and an intensification of biomanipulation treatments. Therefore, summer phytoplankton growth was low, without cyanobacteria dominance. The rebuilding of zooplankton in Swarzędzkie Lake was observed during sustainable restoration. However, the treatments should be intensified when adverse changes were observed to obtain better results for the improvement of water quality.

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“…However, even if Gizzard Shad and Common Carp abundances are reduced, panfish such as Bluegill may not respond with improved growth and size structure (Neely et al 2018) due to multiple factors, such as lake productivity, density‐dependent effects, and overharvest of large individuals by anglers (Drake et al 1997; McInerny and Cross 1999; Hoxmeier et al 2009; Michaletz et al 2012). Even in small impoundments, species interactions are complex and ecosystem manipulations may not result in predictable responses (DeVries and Stein 1990; DeBoom and Wahl 2014).…”

Section: Discussionmentioning

confidence: 99%

“…Stocking of additional piscivorous fishes has been used to reduce or eliminate undesirable fishes or to improve growth and size structure of desirable fishes in a variety of ecosystems, with varying success (e.g., Haines 2000; Boxrucker 2002; DeBoom and Wahl 2014; Koenig et al 2015; Winters et al 2017). In many cases, Largemouth Bass Micropterus salmoides , which are the primary apex predators in many small lakes, fail to control Gizzard Shad and Common Carp populations even when the Largemouth Bass populations are enhanced by stocking (Hambright et al 1991; Nowlin et al 2006; DeBoom and Wahl 2014; but see Irwin et al 2003). However, two other piscivorous species show promise in accomplishing this task: Flathead Catfish Pylodictis olivaris and hybrid Striped Bass (Striped Bass Morone saxatilis × White Bass Morone chrysops ).…”

mentioning

confidence: 99%

Bolstering Piscivore Abundance to Restructure Small Impoundment Fish Communities

Michaletz

2020

N American J Fish Manag

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Small impoundments (hereafter, "lakes") provide close-to-home fishing opportunities for many anglers but do not always provide quality fishing, especially for panfish. Often, these lakes contain populations of slow-growing Bluegill Lepomis macrochirus and crappies Pomoxis spp. The presence of abundant Gizzard Shad Dorosoma cepedianum and Common Carp Cyprinus carpio is known to negatively influence these populations. Chemical and mechanical removal of these nuisance species requires intensive effort, is costly, and usually results in only short-term benefits. An alternative approach is to stock piscivores that prey on these species and reduce their abundances. Hybrid Striped Bass (Striped Bass Morone saxatilis × White Bass Morone chrysops) alone or in combination with Flathead Catfish Pylodictis olivaris were stocked into small lakes to consume Gizzard Shad and Common Carp. To evaluate the success of this approach, I determined whether stockings of hybrid Striped Bass and Flathead Catfish were (1) associated with a consequent reduction in abundances and changes in size structure of Common Carp and Gizzard Shad, (2) related to improved growth rates and size structure of Bluegill and crappie populations, and (3) associated with changes in Largemouth Bass Micropterus salmoides demographics and aquatic macrophyte coverage. Nine treatment lakes were each paired with a reference lake, and fish population variables and macrophyte coverage were analyzed with a before-after, control-impact design. With a few exceptions, additions of piscivores were largely unsuccessful in reducing Gizzard Shad and Common Carp abundances and in improving growth of panfishes and the additions had little effect on Largemouth Bass or macrophyte coverage. A multi-pronged approach combining several methods (e.g., stocking of piscivores, reducing nutrients, and mechanical or chemical removal) may be necessary to effectively reduce the abundances of Gizzard Shad and Common Carp in these small lakes.

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Piscivore enhancement effects on food webs depend on planktivore body size and species composition in replicated whole lake experiments

Cited by 6 publications

References 92 publications

Interrelationships among bluegill demographics, predator and competitor abundances and impoundment characteristics

Interrelationships among bluegill demographics, predator and competitor abundances and impoundment characteristics

Zooplankton changes during bottom-up and top-down control due to sustainable restoration in a shallow urban lake

Bolstering Piscivore Abundance to Restructure Small Impoundment Fish Communities

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