Environmental determinants of fish community structure in gravel pit lakes

Zhao, Tian; Grenouillet, Gaël; Pool, Thomas K.; Tudesque, Loïc; Cucherousset, Julien

doi:10.1111/eff.12222

Cited by 41 publications

(93 citation statements)

References 43 publications

(71 reference statements)

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“…Species richness and the number of piscivorous species were higher in gravel pit lakes managed for recreational fisheries, supporting our first two hypotheses. Agreeing with our results, a greater α‐diversity in lakes managed by and for recreational fisheries has previously been demonstrated for gravel pit lakes in southern France (Zhao et al, ) and Minnesota (Radomski & Goeman, ). Additionally, in managed gravel pit lakes we also detected a higher Shannon diversity of the littoral fish community in terms of abundance underlining the higher fish biodiversity present in managed lakes.…”

Section: Discussionsupporting

confidence: 92%

“…The hypothesised support of non‐native species introductions and accumulation of exotics by recreational‐fisheries management as revealed, for example, in a French gravel pit study by Zhao et al . () was not confirmed for gravel pit lakes in north‐western Germany. It must be noted that several of the angler‐desired fish species reported invasive for France (Zhao et al, ) are native to Germany; e.g ., C. carpio , S. lucioperca and S. glanis .…”

Section: Discussionmentioning

confidence: 88%

“…() was not confirmed for gravel pit lakes in north‐western Germany. It must be noted that several of the angler‐desired fish species reported invasive for France (Zhao et al, ) are native to Germany; e.g ., C. carpio , S. lucioperca and S. glanis . In our study, only two individuals of non‐native P. parva were found in one of 16 managed lakes, which were most probably introduced unintentionally through poorly sorted stocking of pond‐reared C. carpio or poorly sorted stocking of wild‐captured cyprinids (Copp et al, ; Wiesner et al, ).…”

Section: Discussionmentioning

confidence: 96%

“…In a study of French gravel pit lakes Zhao et al . () found that the fish community composition was strongly influenced by recreational angling as managed gravel pit lakes hosted more non‐native species of high fisheries value, particularly top predators and common carp Cyprinus carpio L. 1758 compared with unmanaged gravel pit lakes. The objective of the present study was to compare the fish communities between managed and unmanaged gravel pit lakes in north‐western Germany.…”

Section: Introductionmentioning

confidence: 99%

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Effect of recreational‐fisheries management on fish biodiversity in gravel pit lakes, with contrasts to unmanaged lakes

Matern

Emmrich

Klefoth

et al. 2019

Journal of Fish Biology

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Gravel pit lakes are novel ecosystems that can be colonized by fish through natural or anthropogenic pathways. In central Europe, many of them are managed by recreational anglers and thus experience regular fish stocking. However, also unmanaged gravel pits may be affected by stocking, either through illegal fish introductions or, occasionally, by immigration from connected water bodies. We sampled 23 small (< 20 ha) gravel pit lakes (16 managed and 7 unmanaged) in north‐western Germany using littoral electrofishing and multimesh gillnets. Our objective was to compare the fish biodiversity in gravel pit lakes in the presence or absence of recreational fisheries. Given the size of the sampled lakes, we expected species poor communities and elevated fish diversity in the managed systems due to regular stocking of game fish species. Our study lakes were primarily mesotrophic and did not differ in key abiotic and biotic environmental characteristics. Lakes of both management types hosted similar fish abundances and biomasses, but were substantially different in terms of fish community structure and species richness. Fish were present in all lakes, with a minimum of three species. Higher α‐diversity and lower β‐diversity was discovered in managed gravel pit lakes compared to unmanaged lakes. Consequently, recreational‐fisheries management fostered homogenization of fish communities, by stocking a similar set of fish species desired by anglers such as piscivorous fish and large bodied cyprinids. However, unmanaged gravel pit lakes were also affected by human‐mediated colonization, presumably by illegal fish releases. Hardly any non‐native species were detected, suggesting that recreational‐fisheries management did not foster the spread of exotic species in our study region.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 88%

Section: Discussionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of recreational‐fisheries management on fish biodiversity in gravel pit lakes, with contrasts to unmanaged lakes

Matern

Emmrich

Klefoth

et al. 2019

Journal of Fish Biology

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“…The fish assemblages of the lakes were sampled using an identical protocol in each lake, with a combination of gillnetting and electrofishing by point abundance sampling (PASE; Cucherousset, Paillisson, Carpentier, Eybert, & Olden, ). These complementary approaches enabled capture of a wide range of fish species and life stages across different types of lake substrates and habitats (see details in Zhao, Grenouillet, Pool, Tudesque, & Cucherousset, ). Gillnets were deployed in the pelagic ( n = 2 gillnets; mesh size: 20 and 50 mm) and littoral ( n = 4–6 depending upon lake size; mesh size: 12, 20, 30 and 60 mm) habitats in the morning for approximately 1 hr to limit mortality.…”

Section: Methodsmentioning

confidence: 99%

Between‐lake variation in the trophic ecology of an invasive crayfish

et al. 2017

Self Cite

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The trophic ecology of invasive species has important implications for their impacts on recipient ecosystems, with omnivorous invaders potentially affecting native species and processes over multiple trophic levels. The trophic ecology of invaders might be affected by both their body size and the characteristics of their habitat due to variation in energy requirements and resource availability. Here, using stable-isotope analysis, we investigated the trophic ecology of the invasive crayfish Procambarus clarkii in 15 populations in southwest France over a gradient of individual (crayfish body size), population (crayfish abundance) and ecosystem (lake size, productivity and predation pressure) characteristics. We predicted that population niche width, level of omnivory and trophic position of individuals would change with abiotic and biotic conditions, but that these relationships would vary with lake size. The trophic position of individual crayfish increased with body size in lakes with low productivity, but decreased with body size in more productive lakes. As crayfish abundance increased (and therefore potential intraspecific competition), individual trophic position and population niche width decreased. This was most apparent in smaller lakes, suggesting it related to an increase in encounter rates with conspecifics. Body size, population abundance, lake size and lake productivity influenced the trophic ecology of invasive crayfish, which can affect their interactions with native species. Our results demonstrated that the trophic ecology of invasive species can be variable across invaded landscapes, with implications for their ecological impacts on native communities. This emphasizes the importance of characterising the diet of invasive species across their non-native range and environmental gradients to better predict and manage their impacts

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Status of aquatic and riparian biodiversity in artificial lake ecosystems with and without management for recreational fisheries: Implications for conservation

Nikolaus

Schafft

Maday

et al. 2020

Aquatic Conservation

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Humanity is facing a biodiversity crisis, with freshwater‐associated biodiversity in a particularly dire state. Novel ecosystems created through human use of mineral resources, such as gravel pit lakes, can provide substitute habitats for the conservation of freshwater and riparian biodiversity. Many of these artificial ecosystems are subject to a high intensity of recreational use, however, which may limit their biodiversity potential. The species richness of several taxa (plants, amphibians, dragonflies, damselflies, waterfowl, and songbirds) was assessed and a range of taxonomic biodiversity metrics were compared between gravel pit lakes managed for recreational fisheries (n = 16) and unmanaged reference lakes (n = 10), controlling for non‐fishing‐related environmental variation. The average species richness of all the taxa examined was similar among lakes in both lake types and no substantial differences in species composition were found when examining the pooled species inventory. Similarly, there were no differences between lake types in the presence of rare species and in the Simpson diversity index across all of the taxa assessed. Variation in species richness among lakes was correlated with woody habitat, lake morphology (surface area and steepness), and land use, but was not correlated with the presence of recreational fisheries. Thus, non‐fishing‐related environmental variables had stronger effects on local species presence than recreational fisheries management or the presence of recreational anglers. Collectively, no evidence was found that anglers and recreational fisheries management constrain the development of aquatic and riparian biodiversity in gravel pit lakes in the study region; however, the conservation of species diversity in gravel pit lakes could benefit from an increasing reliance on habitat enhancement activities.

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Environmental determinants of fish community structure in gravel pit lakes

Cited by 41 publications

References 43 publications

Effect of recreational‐fisheries management on fish biodiversity in gravel pit lakes, with contrasts to unmanaged lakes

Effect of recreational‐fisheries management on fish biodiversity in gravel pit lakes, with contrasts to unmanaged lakes

Between‐lake variation in the trophic ecology of an invasive crayfish

Status of aquatic and riparian biodiversity in artificial lake ecosystems with and without management for recreational fisheries: Implications for conservation

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