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

Michaletz, Paul H.

doi:10.1080/02705060.2020.1853623

Cited by 2 publications

(2 citation statements)

References 59 publications

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“…A meta-analysis of plant and animal community abundance data sets found that 36 (88%) of 41 data sets displayed positive community covariances in terms of abundance (Houlahan et al 2007). Fish communities also show positive abundance relationships whereby multiple species have higher abundance in systems with higher nutrient availability (Michaletz 2020). These studies match our findings.…”

Section: Discussionsupporting

confidence: 87%

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What's good for fish is good for fishes: Interspecific consistency of growth, condition, and abundance among glacial lakes

Euclide,

Perry,

Donabauer

et al. 2024

N American J Fish Manag

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ObjectiveFish abundance and growth is regulated by a combination of bottom‐up and top‐down forces but many management techniques depend more heavily on the later. Here we evaluate if inter‐system variation in nutrient loading and bottom‐up forces play more dominant roles in control of abundance and growth of species across similar lakes than intra‐ and inter‐specific compensatory effects. We aim to assess whether patterns of abundance and growth are consistent among fish species across.MethodsWe test this by evaluating pairwise comparisons of catch‐per‐unit‐effort (CPUE), condition, and length‐at‐age data for eleven common warmwater fish species from 184 meso‐ and eutrophic glacial lakes in Indiana, USA. We characterize environmental conditions of each lake using limnological measurements (e.g., chlorophyll‐a concentration and surface temperature), lake morphology descriptions (e.g., depth and size), catchment characteristics (e.g., percent agricultural landcover), and nutrient load modeling using Long‐Term Hydrologic Impact Analysis (L‐THIA). Taking a meta‐analysis approach, we use effect size calculation from pairwise correlations among lakes to identify environmental and community impacts on species abundance, condition, and length‐at‐age.ResultWe demonstrate that there are positive associations among most species comparisons (i.e., multiple species experiencing relatively fast growth in the same lake). Evaluations of environmental conditions among systems suggest that differences in estimated phosphorus input, and the limnological measurements of total phosphorus, Secchi depth, and chlorophyll‐a concentration are good predictors of length‐at‐age, and CPUE for fish.ConclusionOur results indicate that there is a strong and consistent influence of environmental conditions and bottom‐up processes in determining species abundance and growth. This suggest that bottom‐up forces and environmental conditions linked to nutrient loading likely determine the upper‐boundary of fish abundance and growth in these lakes.

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Section: Discussionsupporting

confidence: 87%

“…2007). Fish communities also show positive abundance relationships whereby multiple species have higher abundance in systems with higher nutrient availability (Michaletz 2020). These studies match our findings.…”

Section: Discussionmentioning

confidence: 99%

What's good for fish is good for fishes: Interspecific consistency of growth, condition, and abundance among glacial lakes

Euclide,

Perry,

Donabauer

et al. 2024

N American J Fish Manag

View full text Add to dashboard Cite

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Bluegill Population Demographics as Related to Abiotic and Biotic Factors in Florida Lakes

Carlson

Hoyer

2023

Fishes

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Research on Bluegills, Lepomis macrochirus R., is abundant but typically focuses on water bodies with similar environmental conditions. We assessed Bluegill density, relative abundance (catch per unit effort [CPUE] by electrofishing), growth, and size structure in 60 lakes with wide-ranging surface areas (2–12,412 ha), trophic states (oligotrophic–hypereutrophic), and macrophyte abundances (0.3–100 percent of lake volume inhabited [PVI]) across Florida, USA. Bluegill density and CPUE increased with lake productivity and decreased with macrophyte abundance. Bluegill growth increased with lake productivity and CPUE of stock-length Florida Bass, Micropterus floridanus L., a Bluegill predator. Bluegill size structure increased with lake productivity and decreased with Bluegill density. Results indicate that Bluegill fisheries with abundant individuals of quality size (≥150 mm) require productive (>25 μg/L chlorophyll-a concentration) lakes with moderate to high macrophyte coverage (PVI 50–100), abundant stock-length Florida Bass (>40 fish/hr of electrofishing), and Bluegill densities <300 fish/ha. This study provides an approach to predict Bluegill population demographics based on abiotic and biotic factors, establish fisheries management expectations, and develop regional and lake-specific management tools.

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

Cited by 2 publications

References 59 publications

What's good for fish is good for fishes: Interspecific consistency of growth, condition, and abundance among glacial lakes

What's good for fish is good for fishes: Interspecific consistency of growth, condition, and abundance among glacial lakes

Bluegill Population Demographics as Related to Abiotic and Biotic Factors in Florida Lakes

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