Submerged Aquatic Vegetation Patch Size Affects Fish Communities in a Turbid-Algal Lake

Looby, Audrey; Reynolds, Laura K.; Adams, Charles M.; Martin, Charles W.

doi:10.3389/fcosc.2021.657691

Cited by 8 publications

(8 citation statements)

References 42 publications

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“…Although SAV preference can vary among fish species, it is difficult to recommend one SAV species over another in shallow Florida lakes. Instead, Looby et al (2021) determined that patch size of SAV habitat, not species composition, was the most significant contributing environmental variable to fish community structure and total fish biomass.…”

Section: Discussionmentioning

confidence: 99%

“…Fish and Wildlife Service and U.S. Bureau of the Census 2016). Changes in littoral SAV cover can have major effects on fish species composition and biomass in shallow eutrophic lakes (Rogers and Allen 2008; Looby et al 2021). Understanding locally how Largemouth Bass abundance and recruitment are influenced by SAV coverage is essential for effective fish management practices.…”

Section: Introductionmentioning

confidence: 99%

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Influence of habitat and other factors on Largemouth Bass abundance in Lake Okeechobee, Florida

Hanlon

Jordan

2023

Trans Am Fish Soc

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Objective: Submerged aquatic vegetation (SAV) is an important part of shallow lake ecosystems. It provides protective cover and foraging habitat for age-0 and juvenile Largemouth Bass Micropterus salmoides and other small fish, creates structure and habitat for macroinvertebrates and other fauna, and can influence the physical environment by stabilizing sediments and reducing water column turbidity.Methods: For this study, we reviewed annual abundance data for Largemouth Bass collected via electrofishing from 2002 to 2019, along with environmental covariates that included SAV cover (habitat) and turbidity.Result: All age-groups of Largemouth Bass were positively correlated with vascular SAV cover. Age-0 Largemouth Bass were most abundant when SAV cover exceeded approximately 24% (9400 ha) of the littoral and nearshore area, while the juvenile and all-ages groups were most abundant when SAV cover exceeded 20% and 12% of the area, respectively. Following major storm events, water depth and turbidity increased, SAV cover was reduced to <5% of the littoral and nearshore area, and the abundance of age-0 Largemouth Bass was reduced more than 90%. Conclusion:Once removed from the landscape and exposed to turbid conditions, vascular SAV will reestablish only if water clarity increases and light is sufficient to support plant growth. Lowering water levels for an extended period has been shown to reduce nearshore turbidity and jumpstart the recovery of SAV in Lake Okeechobee and other shallow lakes globally. Without adequate SAV habitat, recruitment of age-0 and juvenile Largemouth Bass will likely be suppressed. Maintaining a minimum coverage of vascular SAV (20-35%) in the littoral and nearshore area should increase the abundance of age-0 and juvenile Largemouth Bass and provide beneficial habitat for adult Largemouth Bass and other lake fauna.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of habitat and other factors on Largemouth Bass abundance in Lake Okeechobee, Florida

Hanlon

Jordan

2023

Trans Am Fish Soc

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“…According to Wang et al (2013), total abundance and biomass of the comet fish Carassius auratus are found dominant in lake environments overgrown with aquatic plants. The submerged aquatic plants carry out photosynthesis by utilizing dissolved inorganic carbon (Pedersen et al, 2013;Khairnar & Kaur, 2018), creating healthy environment which may promote high species richness, growth, foraging, and survival of fishes, notably juveniles and smaller individuals, due to optimal spaces for predator-prey interactions and edge effects (Looby et al, 2021). Increased survival rate was positively correlated with the specific growth rate value.…”

Section: Discussionmentioning

confidence: 99%

“…Nevertheless, the feed intake value in this study had no significant difference among the treatments. Several previous studies which used aquatic plants had similar specific growth rate that affected the fish life (Ismail et al, 2018;Looby et al, 2021;Aminisarteshnizi, 2022). In contrast, at limited and excessive vegetation may decrease fish growth rates at 75% to 85% of plant community coverage (Ismail et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

The The Growth Performance and Physiological Status of Comet Goldfish (Carassius auratus) in Aquascape System with Different Aquatic Plant Species

Indriani¹,

Hadiroseyani²,

Diatin³

et al. 2023

Jurnal Akuakultur Indonesia

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This study aimed to evaluate the physiological performance and status of comet goldfish (Carassius auratus) in aquascape system with different aquatic plant species. Comet goldfish (6.5 ± 0.073 cm length and 9.1 ± 0.1 g weight in average) were reared in aquaria with 10 fish/L density per aquarium for 45 days. The results obtained a positive correlation between SR value and SGR value, followed by a significant different value among the treatments applied (P<0.05). Based on the total chromatophore cells, comet goldfish reared in aquarium containing aquatic plants had a significant different (P<0.05) on the total chromatophore cells compared to aquarium without aquatic plants (control). After blood glucose test, comet goldfish reared with aquatic plants consistently showed a lower blood glucose level than without aquatic plants. The liver SOD level of comet goldfish obtained a significant different value between fish reared with aquatic plants and without aquatic plants, while the MDA value on all treatments was insignificantly different. Also, increased total erythrocytes, total leucocytes, hemoglobin, and hematocrit were found on comet goldfish reared with aquatic plants. This study concludes that aquatic plants in rearing system can improve the survival rate, specific growth rate, health status of comet goldfish due to mutualistic symbiosis discovered between fish and aquatic plants. Key words: aquatic plants, comet goldfish, growth performance, and health status.

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“…The effect of vegetation patch dimensions on flow structures has significant consequences for the ecosystem through various mechanisms. For example, an intermediate coverage (10-40%) of vegetation may promote high species richness due to the conditions provided by the optimal behavior of flow [10][11][12]. In addition, flow structures around a vegetation patch have a significant impact on the sediment transport, and consequently on the topography of the river bed [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Turbulence in the Downstream Region of a Vegetation Patch

Kazem

Afzalimehr

Sui

2021

Water

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In presence of vegetation patches in a channel bed, different flow–morphology interactions in the river will result. The investigation of the nature and intensity of these structures is a crucial part of the research works of river engineering. In this experimental study, the characteristics of turbulence in the non-developed region downstream of a vegetation patch suffering from a gradual fade have been investigated. The changes in turbulent structure were tracked in sequential patterns by reducing the patch size. The model vegetation was selected carefully to simulate the aquatic vegetation patches in natural rivers. Velocity profile, TKE (Turbulent Kinetic Energy), turbulent power spectra and quadrant analysis have been used to investigate the behavior and intensity of the turbulent structures. The results of the velocity profile and TKE indicate that there are three different flow layers in the region downstream of the vegetation patch, including the wake layer, mixing layer and shear layer. When the vegetation patch is wide enough (Dv/Dc > 0.5, termed as the patch width ratio, where Dv is the width of a vegetation patch and Dc is the width of the channel), highly intermittent anisotropic turbulent events appear in the mixing layer at the depth of z/Hv = 0.7~1.1 and distance of x/Hv = 8~12 (where x is streamwise distance from the patch edge, z is vertical distance from channel bed and Hv is the height of a vegetation patch). The results of quadrant analysis show that these structures are associated with the dominance of the outward interactions (Q1). Moreover, these structures accompany large coherent Reynolds shear stresses, anomalies in streamwise velocity, increases in the standard deviation of TKE and increases in intermittent Turbulent Kinetic Energy (TKEi). The intensity and extents of these structures fade with the decrease in the size of a vegetation patch. On the other hand, as the size of the vegetation patch decreases, von Karman vortexes appear in the wake layer and form the dominant flow structures in the downstream region of a vegetation patch.

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Submerged Aquatic Vegetation Patch Size Affects Fish Communities in a Turbid-Algal Lake

Cited by 8 publications

References 42 publications

Influence of habitat and other factors on Largemouth Bass abundance in Lake Okeechobee, Florida

Influence of habitat and other factors on Largemouth Bass abundance in Lake Okeechobee, Florida

The The Growth Performance and Physiological Status of Comet Goldfish (Carassius auratus) in Aquascape System with Different Aquatic Plant Species

Characteristics of Turbulence in the Downstream Region of a Vegetation Patch

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