Soluble nitrogen and phosphorus excretion of exotic freshwater mussels (<i>Dreissena</i> spp.): potential impacts for nutrient remineralisation in western Lake Erie

Conroy, Joseph D.; Edwards, William J.; Pontius, Ruth A.; Kane, Douglas D.; Zhang, Hongyan; Shea, John F.; Richey, Julie N.; Culver, David A.

doi:10.1111/j.1365-2427.2005.01392.x

Cited by 154 publications

(115 citation statements)

References 61 publications

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“…Most likely, differences in specific metabolic rates could be related to differences in SRP excretion rate of species. Interspecies differences in SRP excretion rates were found also in other studies: between the rotifera Euchlanis dilatata (18-19 ºC) and other rotifers (Gulati et al, 1989) as well as between Dreissena polymorpha and D. bugensis (Conroy et al, 2005). At the same time, Devine and Vanni (2002) showed that differences in SRP excretion rate between taxa are not significant and this rate depend mostly on temperature and biomass.…”

Section: Discussionsupporting

confidence: 61%

Phosphorus flux by macrobenthic invertebrates in a shallow eutrophic lake Donghu: spatial change

Berezina

Голубков

et al. 2011

Knowl. Managt. Aquatic Ecosyst.

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We estimated phosphorus flux mediated by benthic invertebrates from the sediments to the water in a shallow eutrophic lake (lake Donghu, central China) and quantified spatial (littoral and central sites) and specific (among different benthic taxa) differences. The mass-specific excretion rates of phosphorus (soluble reactive phosphorus (SRP, ηmol·mg dry mass -1 ·h -1 ) by benthic invertebrates (abundant taxa) were estimated experimentally and calculated as a final minus of initial nutrient mass divided by dry mass of organisms. Results showed high importance of chironomid larvae as a contributor to the total P flux from sediments to water in shallow lake Donghu. Benthic biomass (from 0.002 to 32.8 g dry mass·m -2 ) distribution and species composition (31 taxa) were studied (October 2009) in three regions of lake Donghu (Guozhenghu, Miaohu, Yujiahu) using samples from three depths: the shallow littoral site (0.2-1 m depth), central site with 2 m depth, and central site with more than 3 m depth. The total estimated SRP excretion by benthic invertebrate reaches 36% of the direct SPR flux from sediments to water in this lake. The phosphorus regeneration by benthic animals is the most intensive in the shallow littoral sites (69.5 µmol P·m -2 ·day -1 ) and at least 20 times greater than in central sites (3.4 µmol P·m -2 ·day -1 ) of lake Donghu. The results support notable differences in the SRP excretion rates between taxa and sites. The spatial difference in the SRP flux might be considered as a general feature of lakes with periodical changing oxygen near bottom. RÉSUMÉFlux de phosphore dû aux invertébrés macrobenthiques dans un lac peu profond et eutrophe, le lac Donghu.Nous avons estimé le flux de phosphore des sédiments vers l'eau créé par les invertébrés benthiques dans un lac peu profond eutrophe (lac Donghu, centre de la Chine) et quantifié les différences spatiales (sites du littoral et du centre) et spéci-fiques (entre différents taxons benthiques). Les taux d'excrétion du phosphore (phosphore réactif soluble : SRP, ηmol·mg de masse sèche -1 ·h -1 ) par les invertébrés Mots-clés :phosphore, excrétion, zoobenthos, Knowledge and Management of Aquatic Ecosystems (2011) 402, 11 © ONEMA, 2011 http://www.kmae-journal.org DOI: 10.1051/kmae/2011073 L. Ji et al.: Knowl. Managt. Aquatic Ecosyst. (2011 11p2 benthiques (taxons abondants) ont été estimés expérimentalement et calculés comme la différence entre masses de nutriment finale et initiale divisée par la masse sèche des organismes. Les résultats ont montré une grande importance des larves de chironomides en tant que contributeurs au flux de P total de sédiments vers l'eau dans le lac peu profond Donghu. La distribution de la biomasse benthique (de 0,002 à 32,8 g de matière sèche·m -2 ) et sa composition spécifique (31 taxons) ont été étudiées (octobre 2009) dans trois régions du lac Donghu (Guozhenghu, Miaohu, Yujiahu) en utilisant des échantillons provenant de trois profondeurs : le site peu profond du littoral (0,2-1 m de profondeur), le site c...

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Section: Discussionsupporting

confidence: 61%

Phosphorus flux by macrobenthic invertebrates in a shallow eutrophic lake Donghu: spatial change

Berezina

Голубков

et al. 2011

Knowl. Managt. Aquatic Ecosyst.

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“…However, during the sampling period from August to September; an exotic invasive species in Ireland, Zebra mussels (Dreissena polymorpha) were evident at highest concentrations on the eastern side of the lake at Coole Bay. The filtering activities of zebra Characteristics of lake dissolved organic matter mussels have been shown to have a large ecosystem-level influence on nitrogen cycling [49][50][51] and organic nitrogen concentrations decrease in water columns in microcosms with live zebra mussels. [52] It is therefore possible that the filtering activities of Zebra mussels result in recycling of larger organic nitrogen compounds such as phenylalanine.…”

Section: Dom Variabilitymentioning

confidence: 99%

Composition of dissolved organic matter within a lacustrine environment

McCaul¹,

Sutton²,

Simpson³

et al. 2011

Environ. Chem.

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Environmental context. Freshwater dissolved organic matter is a complex chemical mixture central to many environmental processes, including carbon and nitrogen cycling. Questions remain, however, as to its chemical characteristics, sources and transformation mechanisms. We studied the nature of dissolved organic matter in a lake system and found that it is influenced by anthropogenic activities. Human activities can therefore influence the huge amounts of carbon sequestered in lakes as dissolved organic matter.Abstract. Freshwater dissolved organic matter (DOM) is a complex mixture of chemical components that are central to many environmental processes, including carbon and nitrogen cycling. However, questions remain as to its chemical characteristics, sources and transformation mechanisms. Here, we employ 1-and 2-D nuclear magnetic resonance (NMR) spectroscopy to investigate the structural components of lacustrine DOM from Ireland, and how it varies within a lake system, as well as to assess potential sources. Major components found, such as carboxyl-rich alicyclic molecules (CRAM) are consistent with those recently identified in marine and freshwater DOM. Lignin-type markers and protein/peptides were identified and vary spatially. Phenylalanine was detected in lake areas influenced by agriculture, whereas it is not detectable where zebra mussels are prominent. The presence of peptidoglycan, lipoproteins, large polymeric carbohydrates and proteinaceous material supports the substantial contribution of material derived from microorganisms. Evidence is provided that peptidoglycan and silicate species may in part originate from soil microbes.

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“…An additional threat posed by cyanobacteria was found to come from Anabaena and Microcystis, which are toxigenic cyanobacteria (Watson et al, 2016). Cyanobacteria growth is promoted by changes of internal and external nutrient loadings and increased temperature (Conroy et al, 2005;McCormick and Fahnenstiel, 1999). In addition, studies have reported that climate change is predicted to expedite to temperatures and stratification patterns beneficial for cyanobacterial growth (Paerl and Huisman, 2008;Wagner and Adrian, 2009) and contribute to hypoxia (Lynch et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

Effect of Diurnal Variation of Dissolved Oxygen in a Eutrophic Polymictic Reservoir

Balangoda¹

2017

American Journal of Environmental Sciences

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Abstract:To evaluate the diurnal and seasonal Dissolved Oxygen (DO) variations and their effects on water quality, a comprehensive study was conducted in a eutrophic polymictic reservoir under artificially aerated and non-aerated conditions. The effect of aeration among sampling locations and along the water column of DO and DO saturation and diurnal variation of DO, water temperature, pH and conductivity was evaluated under aerated and non-aerated conditions. Dissolved oxygen and water temperature exhibited diurnal variations under aerated and non-aerated conditions; however, no notable diurnal variation was observed in conductivity and pH. The anoxic condition was observed in near-bottom waters at night under non-aerated conditions. The diurnal DO concentration at the surface level was higher under non-aerated conditions than aerated conditions. The diurnal DO variation implies that excessive algae and weed growth cause a major impact on DO production and consumption during the day and night, respectively. The DO concentration at different sampling locations revealed that artificial aeration increased DO concentration in the deep portion of the reservoir. However, results showed that the existing aeration system was inadequate to increase the DO concentration in the entire reservoir.

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Soluble nitrogen and phosphorus excretion of exotic freshwater mussels (Dreissena spp.): potential impacts for nutrient remineralisation in western Lake Erie

Cited by 154 publications

References 61 publications

Phosphorus flux by macrobenthic invertebrates in a shallow eutrophic lake Donghu: spatial change

Phosphorus flux by macrobenthic invertebrates in a shallow eutrophic lake Donghu: spatial change

Composition of dissolved organic matter within a lacustrine environment

Effect of Diurnal Variation of Dissolved Oxygen in a Eutrophic Polymictic Reservoir

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