Limnological Changes in a Large Reservoir Following Vegetation Removal by Grass Carp

Maceina, Michael J.; Cichra, Mary F.; Betsill, Robert K.; Bettoli, Phillip W.

doi:10.1080/02705060.1992.9664673

Cited by 40 publications

(32 citation statements)

References 13 publications

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“…Studies that investigated the impacts of removing macrophytes have recorded limnological changes, such as shifts in the composition and abundance of zooplankton (Maceina et al 1992;Choi et al 2014), oxygen depletion, increases in carbonic acid gas and turbidity, oscillations in pH, and export of nitrogen and phosphorus generated in the lake bottom (Granéli & Solander 1988;Young et al 2004;Crossetti & Bicudo 2008;Waterman et al 2011). The main impacts of using excavators to mechanically manage macrophytes are oscillations in light intensity, sediment disturbances, and increased nutrients in the water column (Kuiper et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Potential effects of mechanically removing macrophytes on the phytoplankton community of a subtropical reservoir

Wojciechowski

Burda²,

Scheer³

et al. 2018

Acta Bot. Bras.

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Intensive growth of aquatic macrophytes interferes with water quality and ecosystem dynamics worldwide. Although mechanically removing macrophytes is the most commonly used method for their eradication, it can also cause undesirable disturbances in aquatic reservoir communities. We performed laboratory incubations of phytoplankton sampled before and after macrophytes were mechanically removed from the Piraquara II reservoir, South Brazil. We analyzed changes in growth and composition of the main phytoplankton groups with respect to nutrient shifting. Prior to removing the macrophytes, the phytoplankton community was dominated by low cell abundances of diatoms and flagellates. In contrast, growth rates of cyanobacteria (mainly Cylindrospermopsis raciborskii, Pseudanabaena sp., and Geitlerinema sp.) and of colonial chlorophytes were favored after macrophyte removal, while the abundances of diatoms and flagellates decreased. Our results suggest that removing macrophytes causes dramatic changes in phytoplankton composition and biomass and selects for toxigenic species of cyanobacteria. These changes were probably associated with the disturbance caused by removing the macrophytes, which immediately created new environmental conditions prone to species competition. These findings indicate that the use of mechanical techniques to manage macrophytes should be carefully considered, along with monitoring of harmful species and changes of limnological parameters.

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Section: Introductionmentioning

confidence: 99%

Potential effects of mechanically removing macrophytes on the phytoplankton community of a subtropical reservoir

Wojciechowski

Burda²,

Scheer³

et al. 2018

Acta Bot. Bras.

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“…En el caso particular de C. idella, es fundamental poseer un conocimiento detallado de sus características biológicas debido a los múlti-ples y potenciales impactos que puede acarrear su introducción en el ecosistema (Bain, 1993). Varios autores han reportado cambios limnológicos posteriores a la introducción de C. idella en diferentes densidades, en especial un aumento de la concentración de clorofila, disminución de la transparencia del agua y modificaciones de la redes tróficas (Shireman & Smith, 1983;Maceina et al, 1992;Kirkagac & Demir, 2006). Previo a la siembra de C. idella en el LVD, las macrófitas E. densa y Z. palustris llegaron a cubrir mas del 85% de su superficie e impedían la realización de diferentes actividades en el lago.…”

Section: Comentarios Adicionalesunclassified

Sobre la Presencia de la Carpa Herbívora Ctenopharyngodon Idella (Valenciennes, 1844) en la Provincia de Córdoba (Argentina)

Mancini¹,

Haro²,

López³

2009

Natura

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sobre la presencia de la carpa herbÍvora Ctenopharyngodon idella (valenciennes, 1844) en la provincia de córdoba (argentina) resumen Si bien existe evidencia empírica acerca de la presencia de la carpa herbívora Ctenopharyngodon idella en diferentes ambientes de la provincia de Córdoba, no ha sido hasta el momento oficialmente registrada como parte de su ictiofauna.El objetivo del presente trabajo es confirmar la presencia de C. idella en dos lagos urbanos de la ciudad de Río Cuarto. De esta manera, se incorporan nuevos aportes sobre la presencia de este ciprínido dentro de la ictiofauna de Córdoba.

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“…g. and Cer. d. ( Most of the significant changes in water chemistry were reported from long-lasting experiments in American lakes (Mitzner, 1978;Small et al, 1985;Maceina et al, 1992) or from the Danube River branch (Tomajka, 1995), especially following the total eradication of macrophytes. Studies dealing with indirect changes in water bodies after grass carp stocking are usually complicated by problems with experimental design mentioned in the introduction.…”

Section: Indirect Consequences Water Chemistrymentioning

confidence: 99%

“…In spite of the extensive use of grass carp for controlling the aquatic macrophytes, most of the experiments studying indirect consequences following from grass carp stocking compared a few ponds/lakes stocked with grass carp with ponds/ lakes without fish before and after they were stocked with grass carp (Fowler and Robson, 1978;Lembi et al, 1978;Mitzner, 1978;Small et al, 1985;Maceina et al, 1992;Kirkagac and Demir, 2004). None of the studies used real control pond(s) which would indicate changes both in space (the initial difference between the ponds chosen for stocking with grass carp and control pond(s)) and in time, caused especially by weather, water level fluctuations or fish stock of other fish in all ponds.…”

mentioning

confidence: 99%

“…Nutrients can either remain in the water or be utilized by phytoplankton (Bettoli et al, 1990;Maceina et al, 1992) or accumulate in the sediment (Terrell, 1975). Animal communities (zooplankton and zoobenthos) could be influenced not only by changes in bottom links of food chains (bottom-up effect) by the increased phytoplankton abundance but also negatively by the changed habitat structure (Zweerde van der, 1982;Richard et al, 1985).…”

mentioning

confidence: 99%

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Limnological changes in a pond ecosystem caused by grass carp (Ctenopharyngodon idella Val.) low stocking density

Pípalová¹,

Květ²,

Adámek³

2009

CZECH J ANIM SCI

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Grass carp (Ctenopharyngodon idella Val.) stocked (29 kg/ha) in a small pond reduced the biomass of aquatic macrophytes from 109 g/m 2 to 33 g/m 2 during one growing season. The only changes in hydrochemical parameters (pH, alkalinity, acidity, BOD 5 , COD Mn , NH 4 -N, NO 2 -N, NO 3 -N, TN, PO 4 -P and TP) associated with the grass carp stocking were a decrease in pH (from 8.43 to 7.57) and in NO 3 -N concentration (from 0.99 mg/l to 0.56 mg/l). The increases in organic matter content and NO 3 -N concentration in the surface sediment layer were higher in the control pond than in the pond stocked with grass carp. No changes were detected in the other parameters (NH 4 -N, PO 4 -P and TP) in the upper sediment layer and between all parameters measured in the lower inorganic layer. The grass carp grazing had no impact on phytoplankton biomass (concentration of chlorophyll-a) or species composition. There were no changes either in the abundance or in the species composition of zooplankton and zoobenthos induced by grass carp. Statistically significant indirect changes (in water and sediment chemistry) following the grass carp stocking were connected especially with a reduction in the biomass of the filamentous alga (Cladophora globulina) or rather with its maintenance in the control pond.

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Limnological Changes in a Large Reservoir Following Vegetation Removal by Grass Carp

Cited by 40 publications

References 13 publications

Potential effects of mechanically removing macrophytes on the phytoplankton community of a subtropical reservoir

Potential effects of mechanically removing macrophytes on the phytoplankton community of a subtropical reservoir

Sobre la Presencia de la Carpa Herbívora Ctenopharyngodon Idella (Valenciennes, 1844) en la Provincia de Córdoba (Argentina)

Limnological changes in a pond ecosystem caused by grass carp (Ctenopharyngodon idella Val.) low stocking density

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