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Journal articles on the topic 'Benthic invertebrate community'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Wong, Allan HK, Donald J. McQueen, D. Dudley Williams, and Eric Demers. "Transfer of mercury from benthic invertebrates to fishes in lakes with contrasting fish community structures." Canadian Journal of Fisheries and Aquatic Sciences 54, no. 6 (June 1, 1997): 1320–30. http://dx.doi.org/10.1139/f97-035.

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We examined the flow of mercury (Hg) from benthic invertebrates to fishes in lakes with contrasting fish community structure. The study was carried out in two whole lakes in southcentral Ontario in 1992. Both were remote from direct sources of contamination and were chosen because of their physical and chemical similarities. Although the fish communities in the two lakes were qualitatively similar, the total number of fishes in Ranger Lake was an order of magnitude smaller than that in Mouse Lake. As a result of the lower net predation from benthivorous fishes, documented in earlier studies, R

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Jackson, Donald A., and Harold H. Harvey. "Fish and Benthic Invertebrates: Community Concordance and Community–Environment Relationships." Canadian Journal of Fisheries and Aquatic Sciences 50, no. 12 (December 1, 1993): 2641–51. http://dx.doi.org/10.1139/f93-287.

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Fish and benthic invertebrates from 40 lakes in south-central Ontario showed significantly concordant patterns based on community structure. Fish communities were associated significantly with lake morphological characteristics, but were uncorrelated with water chemistry. Large, deep lakes differed from shallow lakes in their fish species, having richer faunas due to the additional cold-water species. Centrarchid species occurred more frequently in small, shallow lakes than in larger lakes. The invertebrate community was not correlated with lake morphology, but showed a significant association

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Al-Ameen, Feryal A. M. "An Ecological Survey of Benthic Invertebrates in Three Sites in Shatt-Al-Kufa at Al-Najaf Province, Iraq." JOURNAL OF UNIVERSITY OF BABYLON for Pure and Applied Sciences 26, no. 8 (October 15, 2018): 230–39. http://dx.doi.org/10.29196/jubpas.v26i8.1691.

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The present study was conducted to determine the structure of benthic invertebrates community, as well as a study of some factors associated with water quality in Shatt Al-Kufa. The study was included a choice of three sites located along the Shatt Al-Kufa River, water samples and benthic invertebrates were collected during the period from February 2014 to January 2015. The abiotic study included measurements of chlorophyll a, salinity, total dissolved solids, biochemical oxygen demand, total hardness, nitrate, and sulfate. The biotic study included the determination the composition of t

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Bond, M. J., D. Rowan, R. Silke, and J. Carr. "Drivers of Abundance and Community Composition of Benthic Macroinvertebrates in Ottawa River Sediment near Chalk River Laboratories." AECL Nuclear Review 2, no. 2 (December 1, 2013): 41–54. http://dx.doi.org/10.12943/anr.2013.00017.

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The Ottawa River has received effluent from Chalk River Laboratories (CRL) for more than 60 years. Some radionuclides and contaminants released in effluents are bound rapidly to particles and deposited in bottom sediments where they may be biologically available to benthic invertebrates and other aquatic biota. As part of a larger ecological assessment, we assess the potential impact of contaminated sediments in the vicinity of CRL on local benthic community structure. Using bivariate and multivariate approaches, we demonstrate that CRL operations have had little impact on the local benthic co

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Michiels, Iris C., and Walter Traunspurger. "Benthic community patterns and the composition of feeding types and reproductive modes in freshwater nematodes." Nematology 7, no. 1 (2005): 21–36. http://dx.doi.org/10.1163/1568541054192234.

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Abstract We characterised benthic invertebrate community composition in 11 oligotrophic, alpine lakes. Nematodes were the most abundant benthic taxa in most lakes but community composition differed markedly. Several relationships between the invertebrate taxa were found but there was no strong evidence that competition or predation shaped the benthic community structure. Most lakes were dominated by a few nematode species with cosmopolitan distribution. Obligate and/or facultative parthenogenetic species were most abundant. With increasing species richness, the overall sex-ratio increased and

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Umar, D. M., J. S. Harding, and H. M. Chapman. "Response of benthic invertebrate communities to a land use gradient in tropical highland streams in Nigeria." Tropical Freshwater Biology 26, no. 1 (March 15, 2018): 53–76. http://dx.doi.org/10.4314/tfb.v26i1.5.

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Benthic invertebrate communities have been shown to respond to habitat degradation as a result of land use changes. Although these changes have been well documented in temperate regions, their effects in the tropics have been poorly documented particularly where land use activities differ markedly (e.g., tea, maize and plantations). A survey 55 1st and 2nd order highland tropical streams, across four land use categories, ranging from continuous tropical montane rain forest to intensive crops and pasture. Streams were sampled in the tropical dry season (October–March) for physico-chemical param

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Têtu, Catherine, Sean Mitchell, Charles MacInnis, and Barry R. Taylor. "Restoration of a Nova Scotia stream to enhance Atlantic salmon provides few benefits to benthic invertebrates." Proceedings of the Nova Scotian Institute of Science (NSIS) 48, no. 2 (May 7, 2016): 211. http://dx.doi.org/10.15273/pnsis.v48i2.6656.

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Stream restoration is often undertaken with the goal of improving habitat for one focal species, most often a salmonid fish such as trout or salmon. Improvements in channel structure, especially the flushing of silt from sediments, should also benefit benthic invertebrate communities, but studies to date suggest substantial changes in benthic communities following restoration are not common. In a third-order Nova Scotia stream, we examined the effect of successful restoration to improve habitat for spawning Atlantic salmon on benthic invertebrate communities at sites where clogging of the bott

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Basu, Arnab, Indrani Sarkar, Siddartha Datta, and Sheela Roy. "Community structure of benthic macroinvertebrate fauna of river Ichamati, India." Journal of Threatened Taxa 10, no. 8 (July 26, 2018): 12044. http://dx.doi.org/10.11609/jott.3439.10.8.12044-12055.

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Benthic macroinvertebrate communities are frequently applied as indicators of aquatic ecosystem health as many species are responsive to pollution and abrupt changes in their surroundings. The qualities of benthic invertebrate communities greatly depend on habitat conditions. Thus the diversity in benthic community varies with different habitat conditions. This investigation on the structure of the benthic invertebrate communities was conducted on river Ichamati, a trans-boundary river between India and Bangladesh to assess the cumulative effects of water quality on the aquatic biota. The stud

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9

Metzeling, L. "Benthic macroinvertebrate community structure in streams of different salinities." Marine and Freshwater Research 44, no. 2 (1993): 335. http://dx.doi.org/10.1071/mf9930335.

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The likely effect of salinization on stream invertebrates was studied by comparing macroinvertebrate community structure at nine sites in six lowland, perennially flowing streams. The salinity of these streams ranged from 51 to 1100 mg L-1 total dissolved solids (TDS) (and were historically higher, up to about 2000 mg L-1 TDS). There was no correlation between either number of taxa or faunal abundance with salinity. However, multivariate analyses showed distinct invertebrate communities associated with different salinities. Fidelity analysis identified groups of taxa associated with either low

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Parker, Roy, and Charles Dumaresq. "Effluent Characterization, Water Quality Monitoring and Sediment Monitoring in the Metal Mining EEM Program." Water Quality Research Journal 37, no. 1 (February 1, 2002): 219–28. http://dx.doi.org/10.2166/wqrj.2002.014.

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Abstract The metal mining Environmental Effects Monitoring (EEM) program will require mines to conduct effluent characterization and water quality monitoring on an ongoing basis. Samples will be collected four times a year, and will be analyzed for a range of parameters. This information will be used to aid in the design and interpretation of fish surveys and benthic invertebrate community surveys. There are also a number of water quality monitoring methods that may be used to help determine the cause of any effects identified by the EEM program. Mines will also be required to collect sediment

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Grapentine, Lee, Quintin Rochfort, and Jiri Marsalek. "Benthic Responses to Wet-Weather Discharges in Urban Streams in Southern Ontario." Water Quality Research Journal 39, no. 4 (November 1, 2004): 374–91. http://dx.doi.org/10.2166/wqrj.2004.050.

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Abstract Urban stormwater and combined sewer overflow (CSO) discharges are important sources of sediment and contaminants (trace metals, PAHs, nutrients and road salts), and cause changes in flow, sediment, chemical and thermal regimes of receiving waters. Over the past several years, benthic conditions of streams representing a range of exposure environments were assessed in Hamilton, Toronto, Oshawa and Kingston, Ontario. Studies progressed from initial surveys of sediment contaminant levels, sediment toxicity and benthic invertebrate community structure to more spatially intensive sampling

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Negus, Peter M., Jonathan C. Marshall, Alisha L. Steward, Glenn B. Mcgregor, and Ruth A. O'Connor. "Aquatic biota in hot water: thermal gradients in rheocrene hot spring discharges as analogues for the effects of climate warming." Knowledge & Management of Aquatic Ecosystems, no. 421 (2020): 49. http://dx.doi.org/10.1051/kmae/2020042.

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Hot springs are characterised by water temperatures above 36.7 °C. Temperature decreases with distance in flow away from spring vents; this natural gradient provides a unique opportunity to investigate the influence of water temperature on aquatic biota. This study investigated the relationship between water temperature and the aquatic invertebrates and benthic diatoms in outflows from a hot spring complex in tropical north Queensland, Australia. Water temperature ranged from 62.7 °C at the vents to 26.0 °C at the location furthest downstream. Richness of benthic diatoms and aquatic invertebra

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Lingdell, P. E., and E. Engblom. "Liming restores the benthic invertebrate community to ?pristine? state." Water, Air, & Soil Pollution 85, no. 2 (1995): 955–60. http://dx.doi.org/10.1007/bf00476953.

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Delucchi, Carla M. "Comparison of community structure among streams with different temporal flow regimes." Canadian Journal of Zoology 66, no. 3 (March 1, 1988): 579–86. http://dx.doi.org/10.1139/z88-085.

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A study was conducted in four streams in the same watershed in New York to determine whether the benthic invertebrate community structure varied among streams with different temporal flow regimes. Timed kick samples were taken from 13 riffles and 4 pools once a month from June to November 1982. Riffle sites were classified according to temporal flow regime as permanent, intermittent (dry for less than 3 months), or dry (dry for over 3 months), and varied in size as a function of discharge. Ordination analysis (detrended correspondence analysis) showed that the structure of the benthic inverteb

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Zerlin, RA, and R. Henry. "Does water level affect benthic macro-invertebrates of a marginal lake in a tropical river-reservoir transition zone?" Brazilian Journal of Biology 74, no. 2 (May 2014): 408–19. http://dx.doi.org/10.1590/1519-6984.26812.

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Benthic macro-invertebrates are important components of freshwater ecosystems which are involved in ecological processes such as energy transfer between detritus and consumers and organic matter recycling. The aim of this work was to investigate the variation in organism richness, diversity and density of benthic fauna during the annual cycle in Camargo Lake, a lake marginal to Paranapanema River, southeast Brazil. The correlation of environmental factors with community attributes of the macro-benthic fauna was assessed. Since Camargo Lake is connected to the river, we tested the hypothesis th

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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 (July 1, 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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Lo Giudice, Angelina, and Carmen Rizzo. "Bacteria Associated with Marine Benthic Invertebrates from Polar Environments: Unexplored Frontiers for Biodiscovery?" Diversity 10, no. 3 (August 2, 2018): 80. http://dx.doi.org/10.3390/d10030080.

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The ecological function of bacteria-invertebrate interactions in Polar areas remains poorly understood, despite increasing evidence that microbial metabolites may play pivotal roles in host-associated chemical defense and in shaping the symbiotic community structure. The metabolic and physiological changes that these organisms undergo in response to adapting to extreme conditions result in the production of structurally and functionally novel biologically active molecules. Deepening our knowledge on the interactions between bacteria and their invertebrate host would be highly helpful in provid

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18

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 (August 1, 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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Ali, Luay, and Hayfa Jiwar. "Community Structure of Benthic invertebrate in Greater Zab River/Iraq." JOURNAL OF EDUCATION AND SCIENCE 20, no. 2 (October 1, 2007): 38–46. http://dx.doi.org/10.33899/edusj.2007.162796.

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Przeslawski, Rachel, David R. Currie, Shirley J. Sorokin, Tim M. Ward, Franziska Althaus, and Alan Williams. "Utility of a spatial habitat classification system as a surrogate of marine benthic community structure for the Australian margin." ICES Journal of Marine Science 68, no. 9 (July 13, 2011): 1954–62. http://dx.doi.org/10.1093/icesjms/fsr106.

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Abstract Przeslawski, R., Currie, D. R., Sorokin, S. J., Ward. T. M., Althaus, F., and Williams, A. 2011. Utility of a spatial habitat classification system as a surrogate of marine benthic community structure for the Australian margin. – ICES Journal of Marine Science, 68: 1954–1962. This study tests whether a continental-scale classification of Australian benthic habitats (termed “seascapes”) and the interpolated environmental data from which they are derived are useful as abiotic surrogates of biodiversity at a local [tens of kilometres, Great Australian Bight (GAB)] and regional scale [hun

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Collie, Jeremy S., Anthony D. Wood, and H. Perry Jeffries. "Long-term shifts in the species composition of a coastal fish community." Canadian Journal of Fisheries and Aquatic Sciences 65, no. 7 (July 2008): 1352–65. http://dx.doi.org/10.1139/f08-048.

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To study decadal shifts in a coastal nekton community, we analyzed data on 25 fish and invertebrate species collected from 1959 to 2005 by the University of Rhode Island, Graduate School of Oceanography (Narragansett, Rhode Island, USA). This weekly trawl survey samples two locations: inside Narragansett Bay and in Rhode Island Sound. Over four decades, the community has shifted progressively from vertebrates to invertebrates and, especially since 1980, from benthic to pelagic species. Demersal species that declined include winter flounder ( Pseudopleuronectes americanus ), silver hake ( Merlu

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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 (August 1, 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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Robertson, Anne, Daniel Perkins, Judy England, and Tim Johns. "Invertebrate Responses to Restoration across Benthic and Hyporheic Stream Compartments." Water 13, no. 7 (April 4, 2021): 996. http://dx.doi.org/10.3390/w13070996.

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River restoration is a multi-billion-dollar business, yet it is unclear whether benthic community health, which is routinely monitored, can be used as a proxy for the health of the hyporheos. Applying a Before-After-Control-Impact approach to a UK case study, we compared the effects of removing an impoundment on the hyporheos with effects on the benthos. We compared invertebrate biological traits that we expected to respond to the restoration. We constructed sample-size based diversity curves and determined β-diversity between compartments and reaches. Two years post-restoration, hyporheic tax

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Baillie, Brenda R., Brendan J. Hicks, Ian D. Hogg, Michael R. van den Heuvel, and Mark O. Kimberley. "Debris dams as habitat for aquatic invertebrates in forested headwater streams: a large-scale field experiment." Marine and Freshwater Research 70, no. 5 (2019): 734. http://dx.doi.org/10.1071/mf18216.

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To evaluate the effects of debris dams on aquatic invertebrate communities, we sampled benthic invertebrates in debris dams and riffles in three forested headwater streams in New Zealand. As part of a large-scale field experiment, debris dams were subsequently removed from three treatment sections in each of the streams to assess effects on invertebrate communities. Prior to debris dam removal, total invertebrate densities in debris dams were not significantly different from those in riffles. However, densities of Ephemeroptera, Plecoptera and Trichoptera taxa were significantly higher in debr

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Dangles, Olivier. "Functional plasticity of benthic macroinvertebrates: implications for trophic dynamics in acid streams." Canadian Journal of Fisheries and Aquatic Sciences 59, no. 9 (September 1, 2002): 1563–73. http://dx.doi.org/10.1139/f02-122.

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Functional plasticity of benthic macroinvertebrates was investigated over one year in four acid streams in the Vosges Mountains (northeastern France). The trophic position of macroinvertebrate species within the benthic food web was determined using gut content analyses. Diet analyses revealed that only 2436% of biomass of putative shredders consumed leaf fragments, whereas up to 44% consumed benthic algae and bryophytes. Although most Nemouromorpha stoneflies were generalist consumers, several other taxa (e.g., Brachyptera seticornis, Chaetopterygopsis maclachlani) specialised on benthic alg

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Emoyoma, Udi O., Aroloye O. Numbere, and Godfrey N. Woke. "Impact of Nypa Palm (Nypa fruticans Wurmb) and Mangroves Forest on Benthic Macro Invertebrate Community in Andoni River, Nigeria." International Letters of Natural Sciences 77 (January 2020): 51–62. http://dx.doi.org/10.18052/www.scipress.com/ilns.77.51.

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It is postulated that the presence of nypa palm (Nypa palm) in mangrove forest affect the reproductive function of fish by inhibiting the growth of macro invertebrates. The impact of Nypa fruticans (Wurmb) and mangroves on the benthic macro invertebrate community of Andoni River was carried out between January and August, 2017. A total of four stations were chosen based on nypa palm and native mangrove species’ presence and absence, station 1 (Open water), Station 2 (Nypa palm dominance), station 3 (Rhizophora and Avicennia dominance), Station 4 (Mixed). Results of water quality parameters inc

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Vitecek, Simon, Richard Johnson, and Sandra Poikane. "Assessing the Ecological Status of European Rivers and Lakes Using Benthic Invertebrate Communities: A Practical Catalogue of Metrics and Methods." Water 13, no. 3 (January 30, 2021): 346. http://dx.doi.org/10.3390/w13030346.

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The Water Framework Directive requires that the ecological status of surface waters be monitored and managed if necessary. A central function in ecological status assessment has the Biological Quality Elements—organisms inhabiting surface waters—by indicating human impact on their habitat. For benthic invertebrates, a wide array of national methods are used, but to date no comprehensive summary of metrics and methods is available. In this study, we summarize the benthic invertebrate community metrics used in national systems to assess the ecological status of rivers, (very) large rivers, and l

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Rochfort, Q., L. Grapentine, J. Marsalek, B. Brownlee, T. Reynoldson, S. Thompson, D. Milani, and C. Logan. "Using Benthic Assessment Techniques To Determine Combined Sewer Overflow and Stormwater Impacts in the Aquatic Ecosystem." Water Quality Research Journal 35, no. 3 (August 1, 2000): 365–98. http://dx.doi.org/10.2166/wqrj.2000.025.

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Abstract Urban wet-weather sources of pollution such as Stormwater and combined sewer overflows (CSOs) can contribute significantly to the contamination of receiving waters, particularly in sediment depositional areas near outfalls. Analyses of sediment chemistry alone are not sufficient to fully assess the effects of these discharges. Toxicity testing and evaluations of benthic invertebrate communities, in conjunction with chemical analyses, provide a more complete characterization. This study assessed relationships among three separate aspects of the benthic environment:sediment chemistry (m

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Lafont, M., L. Grapentine, Q. Rochfort, J. Marsalek, G. Tixier, and P. Breil. "Bioassessment of wet-weather pollution impacts on fine sediments in urban waters by benthic indices and the sediment quality triad." Water Science and Technology 56, no. 9 (November 1, 2007): 13–20. http://dx.doi.org/10.2166/wst.2007.737.

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Benthic invertebrate assessments can be used to gauge the impact of urban wet-weather flows in receiving waters. Experiences from Cemagref in France have shown that standardized benthic indices (e.g. Oligochaete Index of Sediment Bioindication - IOBS) can be used to reliably determine the ecological status of urban streams and can be incorporated into the new European Water Framework Directive. The Canadian studies on streams and stormwater ponds using chemical analyses, benthic toxicity testing and benthic invertebrate community structure (i.e. the sediment quality triad) comparisons have sho

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Rai, A., D. N. Shah, R. D. T. Shah, and C. Milner. "Influence of environmental parameters on benthic macroinvertebrate assemblages in the headwaters of Bagmati river, Kathmandu valley, Nepal." Banko Janakari 29, no. 1 (August 5, 2019): 53–61. http://dx.doi.org/10.3126/banko.v29i1.25155.

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The distribution of benthic macro invertebrates (BMIs) is affected by various environmental factors. Understanding their response to these factors is a key to assessing freshwater quality. The aim of this research is to understand the influence of different environmental parameters on BMIs assemblages in the headwaters of Bagmati River. The BMIs were sampled following a multi-habitat sampling protocol and the – hydrological and physico-chemical parameters were measured using standard methods. The relationship between environmental parameters and macro invertebrate assemblages was analyzed thro

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Cobb, Susan E., and Mary C. Watzin. "Trophic interactions between yellow perch (Perca flavescens) and their benthic prey in a littoral zone community." Canadian Journal of Fisheries and Aquatic Sciences 55, no. 1 (January 1, 1998): 28–36. http://dx.doi.org/10.1139/f97-205.

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Yellow perch (Perca flavescens) growth rates in northern Lake Champlain have declined in recent years while densities have increased, suggesting resource limitation. At high densities, predators have the potential to influence prey communities, but these effects can be highly complex. Using in situ mesh cages in an unmanipulated littoral zone setting, we examined the effects of two densities (0.5 and 1.5/m2) of yellow perch on (i) their growth and (ii) the abundance of major prey groups in the benthic community. Yellow perch growth rates were significantly lower in the high-density treatment t

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Culhane, Fiona E., Robert A. Briers, Paul Tett, and Teresa F. Fernandes. "Response of a marine benthic invertebrate community and biotic indices to organic enrichment from sewage disposal." Journal of the Marine Biological Association of the United Kingdom 99, no. 8 (October 28, 2019): 1721–34. http://dx.doi.org/10.1017/s0025315419000857.

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AbstractNutrient enrichment is a significant cause of ecosystem change in coastal habitats worldwide. This study focuses on the change in a benthic macroinvertebrate community and environmental quality as assessed through different biotic indices following the construction of a sewage outfall pipe in the west of Scotland, from first implementation to seven years after operation of the pipe. Benthic macroinvertebrates are an important part of marine ecosystems because they mediate ecosystem processes and functions, are a key part of food webs and they provide many ecosystem services. Results in

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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 (June 1, 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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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 (May 1, 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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Gilliam, James F., Douglas F. Fraser, and Alberto M. Sabat. "Strong Effects of Foraging Minnows on a Stream Benthic Invertebrate Community." Ecology 70, no. 2 (April 1989): 445–52. http://dx.doi.org/10.2307/1937549.

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Pollard, A. I., and L. Yuan. "Community Response Patterns: Evaluating Benthic Invertebrate Composition In Metal-Polluted Streams." Ecological Applications 16, no. 2 (April 2006): 645–55. http://dx.doi.org/10.1890/1051-0761(2006)016[0645:crpebi]2.0.co;2.

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Oppong, Samuel K., Collins Ayine Nsor, and Gabriel Kwabena Buabeng. "Response of benthic invertebrate assemblages to seasonal and habitat condition in the Wewe River, Ashanti region (Ghana)." Open Life Sciences 16, no. 1 (January 1, 2021): 336–53. http://dx.doi.org/10.1515/biol-2021-0040.

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Abstract Aquatic macro-invertebrates play a vital role in the food chain of river ecosystem at several trophic guilds and consumer levels, and are used as biomonitoring tools for aquatic ecosystem health. However, hydrologic conditions of these ecosystems have been severely altered because of the increase in urban development and agricultural expansion. This study examined benthic invertebrate response to processes that structure their community in the Wewe River, segmented into intact, medium, and severe condition zones. We sampled in 100 stations in a period of 4 months in the wet (June–Sept

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Saigo, Miguel, Mercedes Marchese, and Luciana Montalto. "Dispersal traits as benthic invertebrate assemblage drivers in a neotropical large river." Fundamental and Applied Limnology / Archiv für Hydrobiologie 193, no. 3 (April 21, 2020): 275–83. http://dx.doi.org/10.1127/fal/2020/1236.

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Metacommunity theory is a mechanistic framework that explains the interdependence of local factors and regional processes as community drivers. Recent evidence suggests that dispersal mode is a key trait that potentially affects metacommunity dynamics. We analyzed the distribution patterns of benthic macroinvertebrates with different dispersal modes in the Middle Paraná, a neotropical large river. We assessed the relative importance of local environmental conditions and regional spatial structure as assemblage drivers. Aquatic and aerial dispersers presented Clementsian and Gleasonian structur

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Kaplanis, Nikolas J., Clinton B. Edwards, Yoan Eynaud, and Jennifer E. Smith. "Future sea-level rise drives rocky intertidal habitat loss and benthic community change." PeerJ 8 (May 29, 2020): e9186. http://dx.doi.org/10.7717/peerj.9186.

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The impacts of sea-level rise (SLR) are likely to be the greatest for ecosystems that exist at the land-sea interface, where small changes in sea-level could result in drastic changes in habitat availability. Rocky intertidal ecosystems possess a number of characteristics which make them highly vulnerable to changes in sea-level, yet our understanding of potential community-scale responses to future SLR scenarios is limited. Combining remote-sensing with in-situ large-area imaging, we quantified habitat extent and characterized the biological community at two rocky intertidal study locations i

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Lecerf, Antoine, Denise Patfield, Anatole Boiché, Miira P. Riipinen, Eric Chauvet, and Michael Dobson. "Stream ecosystems respond to riparian invasion by Japanese knotweed (Fallopia japonica)." Canadian Journal of Fisheries and Aquatic Sciences 64, no. 9 (September 1, 2007): 1273–83. http://dx.doi.org/10.1139/f07-092.

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There are growing concerns about the rapid spread of exotic plants into riparian zones, yet little information is currently available on their influence on stream ecosystems. This study assessed the impact of riparian invasion by Japanese knotweed (Fallopia japonica), an aggressive invader, on leaf litter breakdown and its associated biota (aquatic hyphomycete fungi and benthic invertebrates) in heterotrophic, low-order streams in The Pennines (England) and the Pyrenees (France). Our results suggest that leaf consumers (aquatic hyphomycetes and invertebrate shredders) can readily use knotweed

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Moritz, C., D. Gravel, L. Savard, C. W. McKindsey, J. C. Brêthes, and P. Archambault. "No more detectable fishing effect on Northern Gulf of St Lawrence benthic invertebrates." ICES Journal of Marine Science 72, no. 8 (July 16, 2015): 2457–66. http://dx.doi.org/10.1093/icesjms/fsv124.

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Abstract Trawling has been reported worldwide to alter seabed structure, and thus benthic habitats and ecosystems. Usually, a decrease in species richness and biomass is observed, and community structure is modified towards more opportunistic species. The Gulf of St Lawrence (Canada) has been intensely exploited since the 17th century, including net, longline, dredge and trawl fishing activities. Recently, the collapse of groundfish stocks induced a shift in fishing practices toward shrimp trawling, which is currently considered a sustainable fishing activity in the region. However, no long-te

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Rennie, Michael D., and David O. Evans. "Decadal changes in benthic invertebrate biomass and community structure in Lake Simcoe." Freshwater Science 31, no. 3 (September 2012): 733–49. http://dx.doi.org/10.1899/11-079.1.

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Jimenez, Andrea, Michael D. Rennie, W. Gary Sprules, and Jake La Rose. "Temporal changes in the benthic invertebrate community of Lake Simcoe, 1983–2008." Journal of Great Lakes Research 37 (January 2011): 103–12. http://dx.doi.org/10.1016/j.jglr.2010.07.002.

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Knight, Jennifer C., Brian P. O'Malley, and Jason D. Stockwell. "Lake Champlain offshore benthic invertebrate community before and after zebra mussel invasion." Journal of Great Lakes Research 44, no. 2 (April 2018): 283–88. http://dx.doi.org/10.1016/j.jglr.2018.01.004.

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Montz, Gary R., Jodene Hirsch, Richard Rezanka, and David F. Staples. "Impacts of Copper on a Lotic Benthic Invertebrate Community: Response and Recovery." Journal of Freshwater Ecology 25, no. 4 (December 2010): 575–87. http://dx.doi.org/10.1080/02705060.2010.9664407.

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CARTER, J. L., S. V. FEND, and S. S. KENNELLY. "The relationships among three habitat scales and stream benthic invertebrate community structure." Freshwater Biology 35, no. 1 (February 1996): 109–24. http://dx.doi.org/10.1046/j.1365-2427.1996.d01-450.x.

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Vieira, N., and F. Amat. "The invertebrate benthic community of two solar salt ponds in Aveiro, Portugal." International Journal of Salt Lake Research 5, no. 4 (December 1996): 281–86. http://dx.doi.org/10.1007/bf01995382.

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Wilson, Matthew J., Matthew E. McTammany, and Hannah R. Bohr. "Manganese oxides as localized drivers of benthic invertebrate density and community structure." Hydrobiologia 838, no. 1 (May 29, 2019): 85–98. http://dx.doi.org/10.1007/s10750-019-03979-3.

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Dahl, Jonas. "The impact of vertebrate and invertebrate predators on a stream benthic community." Oecologia 117, no. 1-2 (November 17, 1998): 217–26. http://dx.doi.org/10.1007/s004420050651.

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Solan, Martin, Ellie R. Ward, Christina L. Wood, Adam J. Reed, Laura J. Grange, and Jasmin A. Godbold. "Climate-driven benthic invertebrate activity and biogeochemical functioning across the Barents Sea polar front." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 378, no. 2181 (August 31, 2020): 20190365. http://dx.doi.org/10.1098/rsta.2019.0365.

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Arctic marine ecosystems are undergoing rapid correction in response to multiple expressions of climate change, but the consequences of altered biodiversity for the sequestration, transformation and storage of nutrients are poorly constrained. Here, we determine the bioturbation activity of sediment-dwelling invertebrate communities over two consecutive summers that contrasted in sea-ice extent along a transect intersecting the polar front. We find a clear separation in community composition at the polar front that marks a transition in the type and amount of bioturbation activity, and associa

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