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Journal articles on the topic 'Benthic invertebrate drift'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Romero, Nicolas, Robert E. Gresswell, and Judith L. Li. "Changing patterns in coastal cutthroat trout (Oncorhynchus clarki clarki) diet and prey in a gradient of deciduous canopies." Canadian Journal of Fisheries and Aquatic Sciences 62, no. 8 (2005): 1797–807. http://dx.doi.org/10.1139/f05-099.

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We examined the influence of riparian vegetation patterns on coastal cutthroat trout Oncorhynchus clarki clarki diet and prey from the summer of 2001 through the spring of 2002. Benthic and drifting invertebrates, allochthonous prey, and fish diet were collected from deciduous, conifer, and mixed sections of three Oregon coastal watersheds. The nine sites were best characterized as a continuum of deciduous cover, and shrub cover and proportion of deciduous canopy were positively correlated (r = 0.74). Most sources of prey (benthic invertebrate biomass, allochthonous invertebrate inputs, aquati

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2

Siler, Edward R., J. Bruce Wallace, and S. L. Eggert. "Long-term effects of resource limitation on stream invertebrate drift." Canadian Journal of Fisheries and Aquatic Sciences 58, no. 8 (2001): 1624–37. http://dx.doi.org/10.1139/f01-101.

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We examined the effects of resource limitation on stream invertebrate drift by reducing inputs of terrestrial detritus to a headwater stream in western North Carolina. In the treatment stream, leaf-litter was excluded for 6 years (September 1993 August 1999), small woody debris was removed for 2 years (September 1996 August 1998), and large and small woody debris was removed for 1 year (September 1998 August 1999). Invertebrate abundance in the drift was significantly lower in the treatment stream during the study, but total biomass of invertebrate drift was similar. Although drift densi

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3

Ormerod, S. J., M. E. Jones, M. C. Jones, and D. R. Phillips. "The effects of riparian forestry on invertebrate drift and brown trout in upland streams of contrasting acidity." Hydrology and Earth System Sciences 8, no. 3 (2004): 578–88. http://dx.doi.org/10.5194/hess-8-578-2004.

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Abstract. Variations in macroinvertebrate drift and benthic invertebrate abundance were assessed in 30 upland Welsh streams of varying acidity (pH < 5.7 or pH.> 6.0) and riparian land-use (conifer, moorland or native broadleaf). The consequences for the diet and condition of wild brown trout Salmo trutta were also assessed. As expected from previous studies, there were significant reductions in benthic invertebrate abundance, aquatic drift density (by >60%), aquatic drift biomass (by >35%), total drift density (by >35%) and total drift biomass (by >20%) at acid sites by compa

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4

Rader, Russell B. "A functional classification of the drift: traits that influence invertebrate availability to salmonids." Canadian Journal of Fisheries and Aquatic Sciences 54, no. 6 (1997): 1211–34. http://dx.doi.org/10.1139/f97-025.

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Twelve categories/traits were used to classify and rank aquatic invertebrates based on their propensity to drift and importance as a food resource for salmonids. Invertebrate availability was based on their (i) propensity to intentionally drift, (ii) likelihood of being accidentally dislodged by the current, (iii) drift distance, (iv) adult drift, (v) benthic exposure, (vi) body size, and (vii) abundance. This study represents the first attempt to characterize the intentional drift propensity of stream invertebrates. A ranking procedure separated invertebrates into Baetis and three groups decr

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5

Hall, Ronald J. "Relative Importance of Seasonal, Short-Term pH Disturbances During Discharge Variation on a Stream Ecosystem." Canadian Journal of Fisheries and Aquatic Sciences 47, no. 11 (1990): 2261–74. http://dx.doi.org/10.1139/f90-251.

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Effects of short-term, experimental pH reduction on water chemistry and structure of benthic invertebrate communities were investigated in a south-central Ontario stream during spring and fall. With increased acidity, inorganic monomeric Al and Ca concentrations were significantly increased in stream water during spring and fall, whereas Fe, Mn, and Zn concentrations did not change. Total Al and DOC concentrations in stream water showed no constant pattern. Benthic density and generic richness during spring decreased in mineral, but not organic sediments. Total drift density did not change, bu

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6

Irvine, J. R. "Effects of Successive Flow Perturbations on Stream Invertebrates." Canadian Journal of Fisheries and Aquatic Sciences 42, no. 12 (1985): 1922–27. http://dx.doi.org/10.1139/f85-238.

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Initial stream flow changes after a period of constant flow have a much larger effect on invertebrate drift than subsequent changes. Constant discharge was maintained in two man-made streams for several months, after which discharge was kept constant on one stream (control) while in the other (treatment) it was increased fivefold and then returned to its original state three times between 17:00 and 21:00 in 1 d. This treatment was repeated on four successive days each week for 3 wk. On the first day of treatment the density of invertebrate drift increased in the treatment stream during the cha

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7

Sertić Perić, Mirela, Renata Matoničkin Kepčija, Ines Radanović, Biserka Primc, and Ivan Habdija. "Freshwater reefs as mesohabitats for the assessment of diel invertebrate drift patterns." Natura Croatica 29, no. 2 (2021): 185–203. http://dx.doi.org/10.20302/nc.2020.29.26.

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Freshwater reefs (known as tufa barriers) are special karst features recognized for highly heterogeneous habitat structures, complex hydrogeological features, and unique macrozoobenthos drift (downstream dispersal) patterns. Our study objective was to investigate diel and seasonal drift patterns between barriers and pools, both composed of moss-rich and fishless mesohabitat types, aligned on a small spatial scale within the karst, tufa-precipitating Plitvice Lakes hydrosystem. We monthly sampled drift at the two mesohabitat types (barriers and pools) during midday and dusk and examined quantit

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8

Shaw, E. Al, and John S. Richardson. "Direct and indirect effects of sediment pulse duration on stream invertebrate assemblages and rainbow trout (Oncorhynchus mykiss) growth and survival." Canadian Journal of Fisheries and Aquatic Sciences 58, no. 11 (2001): 2213–21. http://dx.doi.org/10.1139/f01-160.

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Elevated concentrations of inorganic sediment supply in streams may impair many biological functions. However, the contribution of exposure duration to the observed impacts has not been previously considered. We evaluated the effects of sediment pulse duration using 14 streamside flow-through experimental channels, each of which contained a naturally colonised invertebrate assemblage and 10 rainbow trout (Oncorhynchus mykiss) fry. Channels were exposed to fine sediment pulses of constant concentration but varied pulse duration (ranging from 0 to 6 h) every second day over 19 days. Total abunda

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9

Boulton, AJ. "Stream ecology and surface-hyporheic hydrologic exchange: Implications, techniques and limitations." Marine and Freshwater Research 44, no. 4 (1993): 553. http://dx.doi.org/10.1071/mf9930553.

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In many streams with coarse substrata, there is continuous exchange between surface water and interstitial (hyporheic) water. Upwelling hyporheic water usually contains less dissolved oxygen and may provide nutrients that are limiting in the surface water. Downwelling stream water carries oxygen, surface detritus and other material to the hyporheic zone where microbes and invertebrates reside. The magnitude and direction of this hydrologic exchange can be measured using relatively simple techniques (such as dye injections and mini-piezometers) although there are some important limitations to c

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10

Rossi, Gabriel J., Mary E. Power, Shelley Pneh, Jason R. Neuswanger, and Timothy J. Caldwell. "Foraging modes and movements of Oncorhynchus mykiss as flow and invertebrate drift recede in a California stream." Canadian Journal of Fisheries and Aquatic Sciences 78, no. 8 (2021): 1045–56. http://dx.doi.org/10.1139/cjfas-2020-0398.

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Salmonids frequently adapt their feeding and movement strategies to cope with seasonally fluctuating stream environments. Oncorhynchus mykiss tend to drift-forage in higher velocity habitat than other salmonids, yet their presence in streams with seasonally low velocity and drift suggests behavioral flexibility. We combined 3D videogrammetry with measurements of invertebrate drift and stream hydraulics to investigate the drivers of O. mykiss foraging mode and movement during the seasonal recession in a California stream. From May to July (2016), foraging movement rate increased as prey concent

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11

Nislow, Keith H., Carol Folt, and Marco Seandel. "Food and foraging behavior in relation to microhabitat use and survival of age-0 Atlantic salmon." Canadian Journal of Fisheries and Aquatic Sciences 55, no. 1 (1998): 116–27. http://dx.doi.org/10.1139/f97-222.

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We examined, using underwater snorkeling observations and field experiments, the influence of food availability on foraging behavior, habitat use, and survival of age-0 Atlantic salmon (Salmo salar) during the critical first-summer growth period. While most feeding attempts were directed at drifting invertebrate prey, we found a higher rate of benthic feeding forays than previously reported for salmon. Greater food abundance was associated with higher feeding foray rates, more time allocated to foraging, occupancy of higher microhabitat velocities, and greater first-year survival between two s

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12

Nakano, Shigeru, Kurt D. Fausch, Itsuro Koizumi, et al. "Evaluating a pattern of ecological character displacement: charr jaw morphology and diet diverge in sympatry versus allopatry across catchments in Hokkaido, Japan." Biological Journal of the Linnean Society 129, no. 2 (2019): 356–78. http://dx.doi.org/10.1093/biolinnean/blz183.

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Abstract Similar species that overlap in sympatry may diverge in characters related to resource use as a result of evolution or phenotypic plasticity. Dolly Varden charr (Salvelinus malma) and whitespotted charr (S. leucomaenis) overlap along streams in Hokkaido, Japan, and compete by interference for invertebrate drift-foraging positions. Previous research has shown that as drift declines during summer, Dolly Varden shift foraging modes to capture benthic prey, a behaviour facilitated by their subterminal jaw morphology. We compare body and jaw morphology of Dolly Varden in sympatry vs. allop

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13

Rosenfeld, Jordan. "Effects of fish predation in erosional and depositional habitats in a temperate stream." Canadian Journal of Fisheries and Aquatic Sciences 57, no. 7 (2000): 1369–79. http://dx.doi.org/10.1139/f00-073.

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Combined effects of predation by benthic and drift-foraging fish (prickly sculpin (Cottus asper) and coho salmon (Onchorhynchus kisutch) parr) on benthic invertebrate community and trophic structure were evaluated in Mayfly Creek, a previously fishless stream in the Coast Range Mountains of British Columbia. The role of microhabitat (substrate) in mediating predation effects was assessed by comparing invertebrate community structure on unglazed ceramic tiles and gravel baskets nested within enclosures. The role of macrohabitat was evaluated by placing enclosures in pool and riffle habitats. Ef

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14

Schäffer, Michael, Carola Winkelmann, Claudia Hellmann, and Jürgen Benndorf. "Reduced drift activity of two benthic invertebrate species is mediated by infochemicals of benthic fish." Aquatic Ecology 47, no. 1 (2013): 99–107. http://dx.doi.org/10.1007/s10452-013-9428-1.

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15

Young, Robert J., and Gerald L. Mackie. "Effect of oil pipeline construction on the benthic invertebrate community structure of Hodgson Creek, Northwest Territories." Canadian Journal of Zoology 69, no. 8 (1991): 2154–60. http://dx.doi.org/10.1139/z91-301.

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During the ice-free seasons of 1984 and the winter and summer of 1985, we determined the effect of winter oil pipeline construction on benthic invertebrates of Hodgson Creek, Northwest Territories. Total suspended sediments increased from < 2 mgL−1 to > 300 mg L−1 at sampling stations downstream of the pipeline right-of-way during construction, with peak concentrations exceeding 3000 mg L−1. A concurrent increase in benthic invertebrate drift density from 2.6 to 37.6/100 m−3 was observed downstream of construction. The effects of pipeline installation were observed up to 5 weeks followin

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16

Sebastien, Robert J., Reinhart A. Brust, and David M. Rosenberg. "Impact of Methoxychlor on Selected Nontarget Organisms in a Riffle of the Souris River, Manitoba." Canadian Journal of Fisheries and Aquatic Sciences 46, no. 6 (1989): 1047–61. http://dx.doi.org/10.1139/f89-136.

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The insecticide methoxychlor was applied at 300 μg∙L−1 for 15 min to a riffie on the Souris River, located about 18 km downstream from Souris, Manitoba. Physical, chemical, and biological variables were measured and aquatic insect community structure was monitored using drift, emergence trap, and artificial substrate samplers. All taxa monitored, irrespective of functional feeding group, drifted catastrophically for 4–24 h immediately following methoxychlor addition. Different species demonstrated varying abilities to recoionize artificial substrates following treatment. Species having a high

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17

March, James G., Jonathan P. Benstead, Catherine M. Pringle, and Marston Luckymis. "Benthic Community Structure and Invertebrate Drift in a Pacific Island Stream, Kosrae, Micronesia1." BIOTROPICA 35, no. 1 (2003): 125. http://dx.doi.org/10.1646/0006-3606(2003)035[0125:bcsaid]2.0.co;2.

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March, James G., Jonathan P. Benstead, Catherine M. Pringle, and Marston Luckymis. "Benthic Community Structure and Invertebrate Drift in a Pacific Island Stream, Kosrae, Micronesia1." Biotropica 35, no. 1 (2003): 125–30. http://dx.doi.org/10.1111/j.1744-7429.2003.tb00270.x.

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19

Richardson, John S., and Chris J. Perrin. "Effects of the Bacterial Insecticide Bacillus thuringiensis var. kurstaki (Btk) on a Stream Benthic Community." Canadian Journal of Fisheries and Aquatic Sciences 51, no. 5 (1994): 1037–45. http://dx.doi.org/10.1139/f94-103.

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Commercial formulations of the insecticidal bacterium Bacillus thuringiensis var. kurstaki (Btk) are frequently sprayed over bodies of water. The hypothesis that Btk poses a threat to stream communities was tested using streamside, flow-through mesocosms which received water and invertebrate colonists from a second-order stream in southwestern British Columbia; low (50 BIU/ha) and high (≥ 5000 BIU/ha) treatment levels were contrasted with controls. There were no significant differences in the density or composition of benthos sampled 7 d after Btk application. The densities were highest in the

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20

Dosdall, L. M., M. M. Galloway, J. T. Arnason, and P. Morand. "FIELD EVALUATION OF THE PHOTOTOXIN, ALPHA-TERTHIENYL, FOR REDUCING LARVAL POPULATIONS OF BLACK FLIES (DIPTERA: SIMULIIDAE) AND ITS IMPACT ON DRIFT OF AQUATIC INVERTEBRATES." Canadian Entomologist 123, no. 3 (1991): 439–49. http://dx.doi.org/10.4039/ent123439-3.

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AbstractThe efficacy of alpha-terthienyl (α-T) for reducing larval populations of black flies was determined in two streams in southeastern Ontario. By 24 h post-treatment, larval black fly population reductions greater than 90% resulted from exposure to calculated dosages of 0.04 and 0.10 mg-L−1 α-T emulsifiable concentrate over distances of 1.0 and 1.5 km, respectively. Significant population reductions were not observed 2.3 km downstream from injection of the 0.10 mg·L−1 dosage, probably because a marshy area upstream from this sampling site slowed the transport and enhanced photodegradatio

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Taylor, Brad W., Angus R. McIntosh, and Barbara L. Peckarsky. "Sampling stream invertebrates using electroshocking techniques: implications for basic and applied research." Canadian Journal of Fisheries and Aquatic Sciences 58, no. 3 (2001): 437–45. http://dx.doi.org/10.1139/f00-255.

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We present a new technique using electrofishing equipment to collect and quantitatively sample stream invertebrates. We used an electrofishing machine with a small anode to produce a localized field of pulsed direct current to induce invertebrate drift. We quickly obtained large numbers of live invertebrates for experiments by passing the anode over the stream bottom upstream of sampling nets. We compared the results of five techniques: (i) electroshocking inside a modified Hess sampler, (ii) repeated electroshocking over a large area to estimate population size by depletion, (iii) traditional

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22

TSZYDEL, MARIUSZ, and ELIZA SZCZERKOWSKA-MAJCHRZAK. "The drift of Trichoptera larvae in a river with a disturbed hydrological regime." Zoosymposia 5, no. 1 (2011): 481–96. http://dx.doi.org/10.11646/zoosymposia.5.1.41.

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The aim of the study, carried out in a section of the Drzewiczka River downstream of a dam reservoir and a white-water canoeing track, was to estimate seasonal changes in the number of drifting invertebrates, especially Trichoptera and their body size and weight as compared with individuals living in benthos. It was also important to determine environmental factors which have the most significant influence on transported invertebrate fauna. The abundance of Trichoptera in benthos and drift was estimated for stonegravel habitats at 2 study sites; one just downstream of a canoeing track, which u

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Boyero, Luz, María Valladolid, and Mercedes Arauzo. "Dynamics of Invertebrate Benthic Communities and Drift in a Regulated River of Central Spain." International Review of Hydrobiology 90, no. 4 (2005): 392–411. http://dx.doi.org/10.1002/iroh.200410805.

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Kreutzweiser, David P., Scott S. Capell, and David R. Thomas. "Aquatic insect responses to Bacillusthuringiensis var. kurstaki in a forest stream." Canadian Journal of Forest Research 24, no. 10 (1994): 2041–49. http://dx.doi.org/10.1139/x94-262.

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A section of forest stream was treated with Bacillusthuringiensis Berliner var. kurstaki (B.t.k.) at 10 × the expected environmental concentration (200 IU/mL) to determine effects on the macroinvertebrate community. Invertebrate drift density increased slightly (approximately 2-fold over pre-treatment densities), but only during the 0.5-h application and only at the site 10 m below the application point. There were no significant changes in taxonomic richness of benthic invertebrates after the application, but there were short-term alterations in community structure at the treated site after t

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Kennedy, Theodore A., Charles B. Yackulic, Wyatt F. Cross, Paul E. Grams, Michael D. Yard, and Adam J. Copp. "The relation between invertebrate drift and two primary controls, discharge and benthic densities, in a large regulated river." Freshwater Biology 59, no. 3 (2013): 557–72. http://dx.doi.org/10.1111/fwb.12285.

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Gibbins, Chris, Ramon J. Batalla, and Damià Vericat. "Invertebrate drift and benthic exhaustion during disturbance: Response of mayflies (Ephemeroptera) to increasing shear stress and river-bed instability." River Research and Applications 26, no. 4 (2010): 499–511. http://dx.doi.org/10.1002/rra.1282.

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27

Pringle, Catherine M., and Alonso Ramírez. "Use of both benthic and drift sampling techniques to assess tropical stream invertebrate communities along an altitudinal gradient, Costa Rica." Freshwater Biology 39, no. 2 (1998): 359–73. http://dx.doi.org/10.1046/j.1365-2427.1998.00311.x.

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Weber, Nicholas, Nicolaas Bouwes, and Chris E. Jordan. "Estimation of salmonid habitat growth potential through measurements of invertebrate food abundance and temperature." Canadian Journal of Fisheries and Aquatic Sciences 71, no. 8 (2014): 1158–70. http://dx.doi.org/10.1139/cjfas-2013-0390.

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Criteria used to characterize lotic salmonid habitat suitability are often based on correlations between physical habitat characteristics and salmonid abundance. Focusing on physical habitat features ignores other habitat components, such as an adequate food supply, that limit the amount of energy available for growth and survival. We tested the degree that food availability and temperature influence lotic salmonid consumption and growth rates and outline an approach for assessing habitat quality based on measurements of these features. We collected benthic and drifting invertebrate abundances

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Tiberti, Rocco, and Stefano Brighenti. "Do alpine macroinvertebrates recover differently in lakes and rivers after alien fish eradication?" Knowledge & Management of Aquatic Ecosystems, no. 420 (2019): 37. http://dx.doi.org/10.1051/kmae/2019029.

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Introduced fish can have detrimental effects on native biota inhabiting alpine freshwaters with the extent of their impact depending on variables such as habitat features. The present study aims to compare the recovery of macroinvertebrate communities following a fish eradication campaign in a mountain lake (Lake Dres, 2087 m a.s.l., Western Italian Alps) and its inflowing and outflowing streams. All fish were removed using mechanical methods, not producing side-effects for macroinvertebrates. During eradication, the lake community, which had previously been greatly affected, rapidly recovered

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Gibbins, Chris N., Damia Vericat, and Ramon J. Batalla. "Relations between invertebrate drift and flow velocity in sand-bed and riffle habitats and the limits imposed by substrate stability and benthic density." Journal of the North American Benthological Society 29, no. 3 (2010): 945–58. http://dx.doi.org/10.1899/09-096.1.

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Dujon, Antoine M., Thomas C. Stieglitz, Erwan Amice, and Dale M. Webber. "Snail leaps and bounds: drivers of the diel movement pattern of a large invertebrate, the Caribbean queen conch (Lobatus gigas), in a marginal inshore habitat." Canadian Journal of Zoology 97, no. 5 (2019): 436–45. http://dx.doi.org/10.1139/cjz-2018-0106.

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Understanding the relationship between the movements of animals and their environment is crucial for fisheries and species management. There is currently a lack of detailed information about the movement of slow-moving benthic species, especially for species of ecological or commercial importance. Here we document the relationship between diel movement and environmental parameters in a groundwater-fed coastal inlet for the queen conch (Lobatus gigas (Linnaeus, 1758)), an important fishery resource of the Caribbean region, using three-dimensional accelerometers and video cameras. Our results sh

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Glova, GJ, and PM Sagar. "Feeding in a Nocturnally active fish, Galaxias brevipinnis, in a New Zealand stream." Marine and Freshwater Research 40, no. 3 (1989): 231. http://dx.doi.org/10.1071/mf9890231.

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To determine the diel feeding periodicity and diet of a lake-inlet population of Galaxias brevipinnis in New Zealand, samples of benthos, drift and fish were collected over a 24-h period in summer. Both numerically and gravimetrically, fish stomach contents revealed that feeding started some time after sunset, peaked towards midnight, and virtually ceased after sunrise. Benthic invertebrates were consumed almost exclusively, with ephemeropterans, trichopterans, and dipterans constituting 95% of the total foods eaten, a major proportion being chironomid larvae. Size of prey eaten compared with

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O'Leary, P., PS Lake, R. Marchant, and TJ Doeg. "Macroinvertebrate activity in the water column of backwaters in an upland stream in Victoria." Marine and Freshwater Research 43, no. 6 (1992): 1403. http://dx.doi.org/10.1071/mf9921403.

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The activity of benthic invertebrates was monitored in the water column of slowly flowing backwaters of the Acheron River during summer. Samples were taken throughout 24 h on two occasions, and densities of fauna were compared with densities in drift samples taken concurrently in the main channel. Drift densities were generally higher than those in backwaters, but not by orders of magnitude. Also, drift densities displayed significant die1 variation, whereas densities in backwaters did not consistently show such a pattern. Species composition generally differed between the two habitats. This b

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Kerby, BM, SE Bunn, and JM Hughes. "Factors influencing invertebrate drift in small forest streams, south-eastern Queensland." Marine and Freshwater Research 46, no. 8 (1995): 1101. http://dx.doi.org/10.1071/mf9951101.

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Aspects of invertebrate drift were investigated in four small rainforest streams in south-eastern Queensland. Hourly sampling in two streams revealed low drift rates and no distinct diel patterns. This may have been a consequence of the low flows experienced during the study period. The drift was dominated by Simuliidae, Chironomidae and to a lesser extent Tasmanocoenis sp. (Caenidae) and Cheumatopsyche sp. 6 (Hydropsychidae). Additional studies were undertaken to examine why some individuals of particular taxa drift while others (of the same taxa) remain in or on the substratum. Analysis of t

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Bogatov, V. V. "Relationship between biomass and drift of river benthic invertebrates." Inland Water Biology 7, no. 2 (2014): 161–66. http://dx.doi.org/10.1134/s1995082914020035.

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Poff, N. LeRoy, and J. V. Ward. "Drift Responses of Benthic Invertebrates to Experimental Streamflow Variation in a Hydrologically Stable Stream." Canadian Journal of Fisheries and Aquatic Sciences 48, no. 10 (1991): 1926–36. http://dx.doi.org/10.1139/f91-229.

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Field experiments were conducted in the regulated upper Colorado River to assess drift responses of lotic macroinvertebrates to streamflow manipulations. In each of three seasons, drift was collected in one control and two experimental riffles. On the first day, no flow manipulations occurred. Six hours before sunset on the second day, streamflow was simultaneously reduced and elevated in two experimental riffles with instream diversion structures. Following flow elevation, both mean daily drift density and drift rate generally increased for 13 taxa across all seasons. Flow reductions generall

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Kändler, Matthias, and Christina Seidler. "Influence of Hydrological Situations on Benthic Organisms in a Small River in Saxony (Germany)." Journal of Hydrology and Hydromechanics 61, no. 3 (2013): 188–94. http://dx.doi.org/10.2478/johh-2013-0024.

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Abstract This research was focused on the relationship between river discharge and organism drift. It was carried out for three years in a small heavily modified river in Saxony (Germany). The amount and species composition of drifting invertebrates were observed, depending on discharge and flow velocity. A station was installed where the flow velocity was continually measured and drifting organisms were caught with nets. An inventory of the aquatic community (benthic invertebrates) was taken to determine the species living in the river at the research station. The highest drift density measur

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Ciborowski, Jan J. H. "Dynamics of Drift and Microdistribution of Two Mayfly Populations: A Predictive Model." Canadian Journal of Fisheries and Aquatic Sciences 44, no. 4 (1987): 832–45. http://dx.doi.org/10.1139/f87-101.

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A model is derived to predict changes in larval microdistribution of Ephemerella inermis Eaton and Baetis tricaudatus Dodds (Ephemeroptera) that result from drift. Transport by drift was assumed to be a Markov process. Estimates of departure from the substrate, downstream movement, and lateral transport were combined to produce transition matrices from which changes in microdistribution, magnitude of drift, and mean daily downstream displacement of live and dead animals were determined. Predictions from the model were compared with observations made in a river similar in composition to the are

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Death, R. G. "Drift distance, periodicity and frequency of benthic invertebrates in a cave stream." SIL Proceedings, 1922-2010 23, no. 3 (1988): 1446–50. http://dx.doi.org/10.1080/03680770.1987.11898039.

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Bruno, M. C., A. Siviglia, M. Carolli, and B. Maiolini. "Multiple drift responses of benthic invertebrates to interacting hydropeaking and thermopeaking waves." Ecohydrology 6, no. 4 (2012): 511–22. http://dx.doi.org/10.1002/eco.1275.

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Barnese, Lisa E., and Rex L. Lowe. "Effects of Substrate, Light, and Benthic Invertebrates on Algal Drift in Small Streams." Journal of the North American Benthological Society 11, no. 1 (1992): 49–59. http://dx.doi.org/10.2307/1467881.

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Kotelnikova, V. S. "Feeding of Russian spirlin Alburnoides rossicus Berg, 1924." Proceedings of the Zoological Institute RAS 320, no. 3 (2016): 326–35. http://dx.doi.org/10.31610/trudyzin/2016.320.3.326.

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Until recently, Russian spirlin found on the territory of the Udmurt Republic was indicated as a subspecies of the riffle minnow Alburnoides bipunctatus rossicus Bloch, 1872. According to osteological and morphometric parameters it is now isolated as an independent species – Russian spirlin Alburnoides rossicus Berg, 1924. Russian spirlin is a very important component of running water ecosystems. Gregarious is typical for this species – it form large clumps in rivers where it lives, outnumbering all other components of ichthyocenosis. The food spectrum of Russian spirlin A. rossicus from Chept

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Mathooko, J. M., and K. M. Mavuti. "Composition and seasonality of benthic invertebrates, and drift in the Naro Moru River, Kenya." Hydrobiologia 232, no. 1 (1992): 47–56. http://dx.doi.org/10.1007/bf00014611.

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Syrjänen, J., K. Korsu, P. Louhi, R. Paavola, and T. Muotka. "Stream salmonids as opportunistic foragers: the importance of terrestrial invertebrates along a stream-size gradient." Canadian Journal of Fisheries and Aquatic Sciences 68, no. 12 (2011): 2146–56. http://dx.doi.org/10.1139/f2011-118.

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Terrestrial invertebrates have been reported to be positively selected by stream salmonids. We assessed the importance of terrestrial and aquatic invertebrates to salmonid diets in 25 streams in Finland, with the hypothesis that terrestrial prey would be important in only the smallest forest streams. Several measures of prey availability were used, including proportional abundance in benthic or drift samples, compared with a trait-based approach, to predict diet composition. Across all 25 streams in autumn, blackfly and caddis larvae were the most important prey items. Terrestrial invertebrate

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Allan, J. David, and Estelle Russek. "The Quantification of Stream Drift." Canadian Journal of Fisheries and Aquatic Sciences 42, no. 2 (1985): 210–15. http://dx.doi.org/10.1139/f85-028.

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Although the purpose of many drift studies is to describe quantitatively the abundance of drifting invertebrates and make comparisons between seasons or sites, almost no investigations have employed replicate sampling. We analyzed drift collections from a Rocky Mountain stream in order to investigate the variability of drift sampling. The data were normalized and the variances stabilized for each taxon examined by data transformation. The fourth root transformation was favored for five taxa and the logarithmic transformation for three. Using the 95% confidence limits on 24-h drift density for

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DUDGEON, DAVID. "The impacts of human disturbance on stream benthic invertebrates and their drift in North Sulawesi, Indonesia." Freshwater Biology 51, no. 9 (2006): 1710–29. http://dx.doi.org/10.1111/j.1365-2427.2006.01596.x.

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Shearer, Karen A., John D. Stark, John W. Hayes, and Roger G. Young. "Relationships between drifting and benthic invertebrates in three New Zealand rivers: Implications for drift‐feeding fish." New Zealand Journal of Marine and Freshwater Research 37, no. 4 (2003): 809–20. http://dx.doi.org/10.1080/00288330.2003.9517210.

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Orlov, Alexander V., Yuri V. Gerasimov, and Oleg M. Lapshin. "The feeding behaviour of cultured and wild Atlantic salmon, Salmo salar L., in the Louvenga River, Kola Peninsula, Russia." ICES Journal of Marine Science 63, no. 7 (2006): 1297–303. http://dx.doi.org/10.1016/j.icesjms.2006.05.004.

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Abstract An underwater survey was conducted in the Louvenga River to investigate the behaviour and distribution of juvenile Atlantic salmon, Salmo salar L., and the adaptation of cultured fish to the natural environment. The food and feeding habits of 34 wild and 44 cultured parr released from the Kandalaksha hatchery were also studied. The cultured salmon fed mostly in the bottom 15 cm of the water column in current velocities of 0.2–0.35 m s−1. In contrast to wild fish, when cultured fish moved away from these areas and into areas with higher current velocities (average speeds of 0.52 m s−1)

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Butakka, Cristina Márcia de Menezes, Luiz Carlos Gomes, and Alice Michiyo Takeda. "Taxonomic and numeric structure of Chironomidae (Diptera) in different habitats of a Neotropical floodplain." Iheringia. Série Zoologia 104, no. 3 (2014): 314–22. http://dx.doi.org/10.1590/1678-476620141043314322.

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We characterized the local benthic Chironomidae by analyzing the numerical density, biomass, diversity index of Shannon-Wiener and dominance of larvae in the main channel of the Ivinhema River, in a secondary channel, in five lakes connected to the main channel and in five lakes without connection. Of the 68 taxa identified, Aedokritus sp., Tanytarsus sp., Chironomus strenzkei Fittkau, 1968 and Procladius sp.1 were found in all sampling sites and were considered morphospecies with greater of greatest ecological plasticity. Chironomus strenzkei Fittkau, 1968, contributed with the greatest bioma

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Padrón, Mariana, and Katell Guizien. "Modelling the effect of demographic traits and connectivity on the genetic structuration of marine metapopulations of sedentary benthic invertebrates." ICES Journal of Marine Science 73, no. 7 (2015): 1935–45. http://dx.doi.org/10.1093/icesjms/fsv158.

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Abstract Accounting for connectivity is essential in marine spatial planning and the proper design and management of marine protected areas, given that their effectiveness depends on the patterns of dispersal and colonization between protected and non-protected areas. The genetic structure of populations is commonly used to infer connectivity among distant populations. Here, we explore how population genetic structure is affected by pre- and settlement limitations with a spatially explicit coupled metapopulation-gene flow model that simulates the effect of demographic fluctuations on the allel

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