The Effect of Reduction in Stream Flow on Invertebrate Drift

Minshall, G. Wayne; Winger, Parley V.

doi:10.2307/1934133

Cited by 147 publications

(110 citation statements)

References 8 publications

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“…Invertebrates downstream are affected by constant changes resulting from plant operations and may have different behaviours in the drift (Troelstrup and Hergenrader, 1990). Invertebrate drift can be stimulated by flow reductions (Cushman, 1985;Minshall and Winger, 1968) and increases (Scullion and Sinton, 1983;Lauters et al, 1996). Moreover, daily peak flow changes favour organisms best adapted to such conditions and eliminate those that are poorly adapted (Armitage, 1978).…”

Section: Introductionmentioning

confidence: 99%

Influence of peak flow changes on the macroinvertebrate drift downstream of a Brazilian hydroelectric dam

2013

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Successive daily peak flows from hydropower plants can disrupt aquatic ecosystems and alter the composition and structure of macroinvertebrates downstream. We evaluated the influence of peak flow changes on macroinvertebrate drift downstream of a hydroelectric plant as a basis for determining ecological flows that might reduce the disturbance of aquatic biota. The aim of this study was to assess the influence of flow fluctuations on the seasonal and daily drift patterns of macroinvertebrates.

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Section: Introductionmentioning

confidence: 99%

Influence of peak flow changes on the macroinvertebrate drift downstream of a Brazilian hydroelectric dam

2013

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“…Many other researchers have also documented (Minshall and Winger 1968;Pearson et.al. 1968;Radford and Hartland-Rowe 1971) increases in drift density with increased discharge.…”

Section: Driftmentioning

confidence: 90%

“…However, they also concluded the same overall result, that of reduced total invertebrate densities with the failure to maintain minimal low flows (Minshall and Winger 1968;Fisher and LaVoy 1972). Diel fluctuations in water levels may also prevent the establishment of "natural" macroinvertebrate communities on periodically exposed areas.…”

Section: Artificial Exposuresmentioning

confidence: 93%

“…Drifting invertebrates are likely being entrained in the rising water outside of their natural diel drift periodicity windows. Minshall and Winger (1968) found that water level changes induced invertebrates to enter the drift during daytime, outside their normal behavioral response at night. Conversely, a decrease in discharge can cause drift to increase since macroinvertebrates seek to escape dewatering.…”

Section: Driftmentioning

confidence: 99%

“…(1989) found that fluctuations created macroinvertebrate communities impoverished in species richness and density. Water level fluctuations can also cause macroinvertebrates to drift when fish are active, potentially further diminishing species richness and/or density of the invertebrate community (Minshall and Winger 1968). These fluctuations in discharge and subsequent water levels may actually provide increased food availability to fish during daylight hours when invertebrate drift is traditionally low relative to historic unregulated discharge.…”

Section: Driftmentioning

confidence: 99%

See 2 more Smart Citations

Evaluation of Juvenile Fall Chinook Salmon Stranding on the Hanford Reach of the Columbia River, 1999 Annual Report.

Nugent¹

2002

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Macroinvertebrate assemblages of littoral habitats in the Macquarie and Mersey rivers, Tasmania: Implications for the management of regulated rivers

Humphries

Davies

Mulcahy

1996

Regul. Rivers: Res. Mgmt.

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Littoral habitats in large rivers are influenced to varying degrees by changes in discharge. Irrigation abstractions can increase the amount of habitat that would naturally be dewatered during low flow periods and therefore it is important to have some knowledge of the potential impact this may have on riverine macroinvertebrates. The macroinvertebrate assemblages of common littoral habitats in riffles, pools and runs in two reaches each of the Macquarie and Mersey Rivers, northern Tasmania, Australia were compared from samples collected during the low flow and irrigation season, between December 1991 and April 1992. The area under water of these habitats, riffle substrata, macrophyte beds and coarse woody debris, responded differently to changes in discharge. Within a reach, the same taxonomic groups often dominated the total number of macroinvertebrates for all habitats, but there were differences in the proportions contributed by these taxa to the different habitats. In general, taxa characteristic of slow‐flowing or lentic habitats, such as ostracods and amphipods, were dominant in macrophyte beds in pools and runs, whereas taxa such as larval elmid beetles and hydropsychid caddisflies were dominant in riffles. A substantial component of the fauna from each habitat within a reach was unique to that habitat, but there was always a similar number of taxa common to all habitats. Classification and ordination grouped samples from both rivers firstly by habitat and secondly by month and reach. Total density and family richness of invertebrates differed by reach, habitat and month in both rivers, except for richness in the Mersey River where habitat was not significant. Differences in densities and numbers of invertebrate families among habitats were not consistent between reaches for each river. This study has highlighted the differences in macroinvertebrate assemblages of several littoral habitats in two lowland rivers in Tasmania. Differences in taxonomic composition, density and richness among habitats within reaches strongly imply the uniqueness of these habitats in terms of the invertebrate faunas that occupy them. We suggest that if maintenance of biotic diversity is an aim of instream flow management, water allocations that address low flows should place a high priority on the maintenance of a diversity of habitats.

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The Effect of Reduction in Stream Flow on Invertebrate Drift

Cited by 147 publications

References 8 publications

Influence of peak flow changes on the macroinvertebrate drift downstream of a Brazilian hydroelectric dam

Influence of peak flow changes on the macroinvertebrate drift downstream of a Brazilian hydroelectric dam

Evaluation of Juvenile Fall Chinook Salmon Stranding on the Hanford Reach of the Columbia River, 1999 Annual Report.

Macroinvertebrate assemblages of littoral habitats in the Macquarie and Mersey rivers, Tasmania: Implications for the management of regulated rivers

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