Establishment of a Viable Population of<i>Daphnia lumholtzi</i>in Lake Pepin, Upper Mississippi River

Burdis, Robert M.; Hirsch, Jodene

doi:10.1080/02705060.2005.9664956

Cited by 4 publications

(1 citation statement)

References 13 publications

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“…Six species of Daphnia were identified from Lake Pepin, one of which was the previously reported invasive D. lumholtzi (Burdis & Hirsch 2004). Interestingly, these six species were also the only Daphnia reported in the Missouri River (Dickerson et al 2010), D. retrocurva being the most common in both rivers.…”

Section: Zooplankton Compositionmentioning

confidence: 97%

Crustacean zooplankton dynamics in a natural riverine lake, Upper Mississippi River

Burdis

Hirsch

2017

Journal of Freshwater Ecology

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Zooplankton communities in riverine systems are typically thought to be driven by abiotic forces. However, recent studies have shown that biological controls are capable of structuring these communities in large rivers and may become more influential as a river system becomes more lentic during low discharge. This study uses a long-term data set to examine several environmental variables as potential drivers of zooplankton community structure in a natural riverine lake. We hypothesized that water residence time would be the most important variable influencing zooplankton community structure. To test this, we used non-metric multidimensional scaling and correlation analysis to examine spatial and temporal patterns in zooplankton community structure. Analysis revealed that water residence time was the single most important environmental variable driving zooplankton abundance and community structure. The relationship between water residence time and taxa groups varied indicating that other taxa specific drivers had some influence on zooplankton community structure as well. Continued insight into the mechanisms driving zooplankton community structure will provide a basis for understanding zooplankton dynamics in large river ecosystems.

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Section: Zooplankton Compositionmentioning

confidence: 97%

Crustacean zooplankton dynamics in a natural riverine lake, Upper Mississippi River

Burdis

Hirsch

2017

Journal of Freshwater Ecology

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Zooplankton sampling in large riverine systems: A gear comparison

Appel

Gerrish

Fisher

et al. 2019

River Research & Apps

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Large river systems create challenges when sampling zooplankton. The dynamics of large rivers, spatial heterogeneity of biota, and behaviours of zooplankton can all contribute to large variation in estimation. The gear utilized for zooplankton collections may also be a factor, and there is not a well‐studied gear, nor industry standard, for collection in riverine systems. The lack of consistent sampling methods makes it difficult to compare zooplankton within and across systems. A standard method for zooplankton collection would be valuable for comparison among studies. To optimize zooplankton assessment in large river habitats, we tested how community estimations varied between four common zooplankton sampling devices across three river habitat types. We tested four gears: the Schindler–Patalas trap, integrated tube sampler, powered water pump, and horizontal tow net. Each device was used to collect samples in thalweg, channel border, and backwater river habitats within Pool 8 of the Upper Mississippi River in June, July, and August of 2017. Our results support that there are qualitative and quantitative differences in zooplankton estimates among gear in different habitats. The powered pump most often yielded highest abundances of total and individual zooplankton taxa allowing for more reliable community comparisons. With some modification, the pump is recommended as the most appropriate sampling gear when performing quantitative studies of zooplankton composition and abundance in large river habitats.

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Viability of Phytoplankton, Zooplankton, and Aquatic Macroinvertebrates in Dredged River Sediments of the Upper Mississippi River

Vander Vorste,

Strassman,

Henkhaus

2024

River Research & Apps

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Sediment dredging is widely used to manage freshwater ecosystems, including maintaining river navigation corridors. Beneficial uses of the sediments are needed to reduce demands on new and existing stockpile sites. However, using dredged sediments in waterbodies outside the sediment source poses an ecological risk if aquatic organisms remain viable through desiccation‐resistant forms. We assessed viability of aquatic organisms in dredged river sediments from four locations along the Upper Mississippi River. We artificially re‐inundated sediments that had been dry for < 1, 1–5, and 5–10 years and sampled phytoplankton, zooplankton, and macroinvertebrate for 4 weeks. We hypothesized that richness and density of aquatic organisms would be negatively affected by duration of drying. Although individual samples of the most recently dredged material had the greatest richness and density of phytoplankton, zooplankton, and macroinvertebrates, mean richness and density was not different across sediment drying durations. Overall, richness and density of aquatic organisms was low in relation to in situ sampling especially following the first week of sediment re‐inundation. Our results suggest transporting sediments from main channel navigation dredging from the Upper Mississippi River to support beneficial uses in other waterbodies poses some ecological risk given our observations of viable organisms in dredged sediments. We present a multistep risk evaluation procedure that could be applied when considering beneficial uses for dredged sediments.

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Establishment of a Viable Population ofDaphnia lumholtziin Lake Pepin, Upper Mississippi River

Cited by 4 publications

References 13 publications

Crustacean zooplankton dynamics in a natural riverine lake, Upper Mississippi River

Crustacean zooplankton dynamics in a natural riverine lake, Upper Mississippi River

Zooplankton sampling in large riverine systems: A gear comparison

Viability of Phytoplankton, Zooplankton, and Aquatic Macroinvertebrates in Dredged River Sediments of the Upper Mississippi River

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