Academic literature on the topic 'Fish communities'

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Journal articles on the topic "Fish communities"

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Deudero, S., P. Merella, B. Morales-Nin, E. Massutí, and F. Alemany. "Fish communities associated with FADs." Scientia Marina 63, no. 3-4 (December 30, 1999): 199–207. http://dx.doi.org/10.3989/scimar.1999.63n3-4199.

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Bell, RJ, MJ Fogarty, and JS Collie. "Stability in marine fish communities." Marine Ecology Progress Series 504 (May 14, 2014): 221–39. http://dx.doi.org/10.3354/meps10730.

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Wong, Allan H. K., D. Dudley Williams, Donald J. McQueen, Eric Demers, and Charles W. Ramcharan. "Macroinvertebrate abundance in two lakes with contrasting fish communities." Fundamental and Applied Limnology 141, no. 3 (March 9, 1998): 283–302. http://dx.doi.org/10.1127/archiv-hydrobiol/141/1998/283.

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Siagian, Mindo Tua, B. Sengli J. Damanik, and Retno Widhiastuti. "Public Perception to Communities Floating Fish Cage At Lake Toba." Indian Journal of Applied Research 3, no. 7 (October 1, 2011): 329–35. http://dx.doi.org/10.15373/2249555x/july2013/101.

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Crampton, W. G. R. "Gymnotiform fish: an important component of Amazonian fioodplain fish communities." Journal of Fish Biology 48, no. 2 (February 1996): 298–301. http://dx.doi.org/10.1111/j.1095-8649.1996.tb01122.x.

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Crampton, W. "Gymnotiform fish: an important component of Amazonian floodplain fish communities." Journal of Fish Biology 48, no. 2 (February 1996): 298–301. http://dx.doi.org/10.1006/jfbi.1996.0029.

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McCann, Kevin. "DENSITY-DEPENDENT COEXISTENCE IN FISH COMMUNITIES." Ecology 79, no. 8 (December 1998): 2957–67. http://dx.doi.org/10.1890/0012-9658(1998)079[2957:ddcifc]2.0.co;2.

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Lopez-Rojas, Hector, Antonio Machado-Allison, Francisco Mago-Leccia, and R. H. Lowe-McConnell. "Ecological Studies in Tropical Fish Communities." Copeia 1988, no. 2 (May 18, 1988): 503. http://dx.doi.org/10.2307/1445899.

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Chao, Ning Labbish, and R. H. Lowe McConnell. "Ecological Studies in Tropical Fish Communities." Estuaries 11, no. 1 (March 1988): 76. http://dx.doi.org/10.2307/1351725.

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Henderson, P. A. "The structure of estuarine fish communities." Journal of Fish Biology 33, sa (December 1988): 223–25. http://dx.doi.org/10.1111/j.1095-8649.1988.tb05577.x.

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Dissertations / Theses on the topic "Fish communities"

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MacNeil, M. Aaron. "Robust analysis of reef fish communities." Thesis, University of Newcastle Upon Tyne, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.443102.

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Davey, Andrew J. H. "Competitive interactions in stream fish communities." Thesis, University of Southampton, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.274580.

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Henriksson, Anna. "Biotic resistance in freshwater fish communities." Doctoral thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-110251.

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Invasions of non-native species cause problems in ecosystems worldwide, and despite the extensive effort that has been put into research about invasions, we still lack a good understanding for why some, but not other, communities resist these invasions. In this doctoral thesis I test hypotheses on biotic resistance using a large dataset of more than 1000 both failed and successful introductions of freshwater fish into Swedish lakes. We have found that the classic species richness hypothesis is a poor descriptor of introduction success because it fails to acknowledge that resident species contribute to the resistance in different ways. We developed a new measure of biotic resistance, the weighted species richness, which takes into account that the resident species contributes to the resistance with different strength and sign. Further, we correlated performance traits of species in their role as an invader and as a resident species to predict how the biotic resistance of these communities would develop over time. We found a positive correlation between performance traits: Some species have high introduction success, they make a large contribution to the resistance, and they cause extinctions when introduced but do not go extinct themselves when other species establishes, whereas other species are weak performers in these respects. Thus, the biotic resistance of these communities should grow stronger as non-native species accumulates. These results give us clues about what type of communities that should be most sensitive to further invasions, i.e., communities harboring species weak performers.  My results show that the biotic resistance of communities is an important factor in determining invasibility of a community. They also show that methods for quantifying resistance must take into account how interactions are structured in nature. What determine the biotic resistance of a community is the type of interactions that the resident species have with the invader and not the species richness of the community.
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Whitfield, Kelly. "Stanley Fish: Interpretation and interpretive communities." Thesis, Whitfield, Kelly (1995) Stanley Fish: Interpretation and interpretive communities. Masters by Coursework thesis, Murdoch University, 1995. https://researchrepository.murdoch.edu.au/id/eprint/52839/.

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This dissertation is a critique of the general theory that Stanley Fish presents in his two books, Is There A Text In This Class: The Authority Of Interpretive Communities, and Doing What Comes Naturally: Change, Rhetoric and the Practice of Theory in Literary and Legal Studies. The importance of the theories presented in these two books is of wider-ranging importance than just the literary and legal academy, which is, at first glance, what Stanley Fish appears to be writing about. Stanley Fish uses these fields as a starting point to discuss interpretation of the text. However, he claims that his arguments have a wider relevance, and can explain the nature of all interpretations of the world around us. Both the legal and literary academies make claims about the nature of interpretation of texts. The history of both fields is full of discussion over what should be regarded as the best method of interpretation of any particular text, with various reading strategies being proposed as being the most objective. Fish’s point of view, however, is that no interpretation can be truly objective, although he also claims that this point of view does not commit him to a position where all interpretation is subjective. He refuses the traditional dichotomy between these two terms. The key to this apparent paradox is in the use of his concept interpretive communities. Stanley Fish proposes interpretive communities as a coherent social system of meaning which explains how interpretation, whilst not being objective in the pure sense of the term, is nevertheless not subjective. Fish’s explanation of interpretive communities has been subject to a great deal of criticism, and this dissertation will first summarize both Fish’s view, and that of some of his critics, then will discuss whether Fish’s arguments prove what he says they prove, or whether his critic’s objections prevail.
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Pennock, Casey A. "Fragmentation and fish passage: can fishways mitigate discontinuities in Great Plains fish communities?" Thesis, Kansas State University, 2016. http://hdl.handle.net/2097/34557.

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Master of Science
Department of Biology
Keith B. Gido
Fishways are a common tool for mitigating the effects of habitat fragmentation on fish communities, but their utility in low-gradient, sand-bed rivers of the Great Plains is not well studied. The Lincoln Street Fishway on the Arkansas River became operational in 2015 and was built specifically to pass small-bodied threatened fishes. We used a combination of surveys up-and downstream of the barrier and tagging experiments to test the ability of fishes to move into and through the fishway. Differences in fish community structure up- and downstream of the dam were more pronounced prior to the construction and operation of the fishway. In particular, Emerald Shiner Notropis atherinoides was absent from collections upstream of the dam before fishway construction, but commonly collected upstream in 2015 and 2016 surveys. Surveys within the fishway structure revealed 29 species, or 74% of the total species captured during our study were using the fishway. To further quantify fishway passage, we used a VIE experiment to assess if fish marked downstream of the fishway moved into or upstream of the fishway. Although we did not recapture marked fish upstream of the fishway, some marked individuals moved into the fishway. Finally, we conducted a PIT tag experiment to evaluate short distance movements within the fishway for three species of small-bodied minnow and were able to document upstream movement across a gradient of flows through the fishway. Results from our study illustrate the potential for fishways to mitigate the effects of habitat fragmentation on small-bodied fishes in sand-bed rivers.
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Beugly, Jayson S. "Fish and invertebrate communities in agricultural headwater streams." Virtual Press, 2008. http://liblink.bsu.edu/uhtbin/catkey/1391472.

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Agricultural practices may influence stream biological communities by removing riparian vegetation and modifying stream channel morphology, both which may reduce water retention time. I collected benthic invertebrates and fishes in seven headwater agriculturally-influenced streams in central Indiana, to quantify controls on invertebrate and fish community assemblage variation. Invertebrates were collected at 14 sites and fish were collected at 12 sites in Buck Creek watershed. The abundances of invertebrates and fishes were analyzed in Detrended Correspondence Analyses (DCA) in PC-ORD software and correlated with abiotic and biotic factors. The sites located in close proximity to Buck Creek have increased stability of biotic (fish assemblages) and abiotic (flow and water depth) factors. Abundances of invertebrates of headwater streams in east-central Indiana agricultural landscapes are influenced by distance between sites, distance to Buck Creek, and presence of fish species. Abundances of fishes were correlated with water quality and distance to Buck Creek.
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Panikian, Garabet. "Statistical modelling of marine fish populations and communities." Thesis, University of York, 2016. http://etheses.whiterose.ac.uk/17063/.

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Sustainable fisheries management require an understanding of the relationship between the adult population and the number of juveniles successfully added to that population each year. The process driving larval survival to enter a given stage of a fish population is highly variable and this pattern of variability reflects the strength of density-dependent mortality. Marine ecosystems are generally threatened by climate change and overfishing; the coupling of these two sources have encouraged scientists to develop end-to-end ecosystem models to study the interactions of organisms at different trophic levels and to understand their behaviours in response to climate change. Our understanding of this important and massively complex system has been constrained historically by the limited amount of data available. Recent technological advances are beginning to address this lack of data, but there is an urgent need for careful statistical methodology to synthesise this information and to make reliable predictions based upon it. In this thesis I developed methodologies specifically designed to interpret the patterns of variability in recruitment by accurately estimating the degree of heteroscedasticity in 90 published stock-recruitment datasets. To better estimate the accuracy of model parameters, I employed a Bayesian hierarchical modelling framework and applied this to multiple sets of fish populations with different model structures. Finally, I developed an end-to-end ecological model that takes into account biotic and abiotic factors, together with data on the fish communities, to assess the organisation of the marine ecosystem and to investigate the potential effects of weather or climate changes. The work developed within this thesis highlights the importance of statistical methods in estimating the patterns of variability and community structure in fish populations as well as describing the way organisms and environmental factors interact within an ecosystem.
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Zha, Yinghua. "Assembly of Gut Microbial Communities in Freshwater Fish and Their Roles in Fish Condition." Doctoral thesis, Uppsala universitet, Limnologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-314235.

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Animal hosts provide associated microorganisms with suitable ecological niches in their intestines. Microbes help their hosts to digest food, protect against pathogens, and influence the host’s metabolisms. Compositional variation of gut microbial communities is common among hosts, and may affect the health status of hosts. Diet and genetic factors are well known to influence the assembly of gut microbial communities. This thesis focuses on disentangling the contributions of factors including host genetics (sex), diet, environment, and other ecological processes to the assembly of gut microbial communities in freshwater fish. The association between gut microbial communities and fish condition is also evaluated in this thesis. Applying metacommunity theory, we found environmental factors including fish habitat, fish species, their diet, dispersal factors including microbes from fish diet, and ecological drift contributed to the assembly of fish gut microbial communities. The proportion of their contribution varied between fish species, where ecological drift explained more in perch than in roach. Under natural conditions fish populations face the risk of predation, which can induce competition and impose predation stress within prey individuals. This can therefore lead to changes in their diet qualities and quantities. In this thesis, it was shown that fish diet in terms of qualities and quantities significantly influenced the overall gut microbial composition, and this influence was dependent on fish sex, a host genetic factor. Predation stress was also suggested to significantly decrease the species richness. Furthermore, when fish were experiencing a diet shift, we showed that different bacterial phyla from novel food had different colonization success in the intestine, and this colonization success was positively influenced by predation stress. Fish condition was suggested in this thesis to be affected by gut microbial composition, especially by the contributions of the bacterial phyla Tenericutes and Actinobacteria.
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Xu, Yi. "Modeling the Seasonal and Interannual Variability of Peruvian Anchovy (Engraulis ringens) Population Dynamics: Linking Environmental Conditions with Fish." Fogler Library, University of Maine, 2009. http://www.library.umaine.edu/theses/pdf/XuY2009.pdf.

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Carlson, William E. "Evaluating hydrologic controls on fish and macroinvertebrate communities in Ohio's western Allegheny Plateau." Ohio : Ohio University, 2006. http://www.ohiolink.edu/etd/view.cgi?ohiou1149193823.

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Books on the topic "Fish communities"

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Moring, J. Bruce. Status of fish communities in the Rio Grande, Big Bend National Park, Texas: Comparison before and after Spring 2003 period of low flow. Reston, VA: U.S. Dept. of the Interior, U.S. Geological Survey, 2005.

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Michio, Hori, Kawanabe Hiroya, and Nagoshi Makoto, eds. Fish communities in Lake Tanganyika. Kyoto, Japan: Kyoto University Press, 1997.

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Hiltner, Randy J. Aquatic investigations of Devils Lake, 2005. Bismarck, N.D: North Dakota Game and Fish Dept., 2006.

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Denis, Fournier. Rapport d'opération du réseau de suivi ichtyologique du fleuve Saint-Laurent: Échantillonnage des communautés ichtyologiques des habitats lotiques du Lac Saint-Pierre en 1997. Québec: Ministère de l'environnement et de la faune, 1998.

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Denis, Fournier, Québec (Province). Direction de la faune et des habitats., Québec (Province). Ministère de l'environnement et de la faune. Direction régionale de la Montérégie., and St. Lawrence Vision 2000 (Canada), eds. Rapport d'opération du réseau de suivi ichtyologique du fleuve Saint-Laurent: Échantillonnage des communautés ichtyologiques du Lac Saint-Louis en 1997. Québec: Ministère de l'environnement et de la faune, 1998.

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Denis, Fournier. Rapport d'opération du réseau de suivi ichtyologique du fleuve Saint-Laurent: Échantillonnage des communautés ichtyologiques du tronçon Gentilly-Batiscan en 1996. Québec: Ministère de l'environnement et de la faune, 1997.

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McConnell, Ro. Ecological studies in tropical fish communities. Cambridge: Cambridge University Press, 1987.

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McConnell, Ro. Ecological studies in tropical fish communities. Cambridge [Cambridgeshire]: Cambridge University Press, 1987.

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Brightbill, Robin A. Fish-community composition in Mill Creek, Crooked Creek, and Tioga River in the vicinity of Tioga-Hammond Dams, Tioga County, Pennsylvania, 1998. Lemoyne, Pa: U.S. Dept. of the Interior, U.S. Geological Survey, 1999.

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Fournier, Denis. Rapport d'opération du réseau de suivi ichtyologique du fleuve Saint-Laurent: Échantillonnage des communautés ichtyologiques du tronçon Grondines--Saint-Nicolas en 1997. Québec: Ministère de l'environnement et de la faune, 1998.

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Book chapters on the topic "Fish communities"

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Reeves, Gordon H., Peter A. Bisson, and Jeffrey M. Dambacher. "Fish Communities." In River Ecology and Management, 200–234. New York, NY: Springer New York, 1998. http://dx.doi.org/10.1007/978-1-4612-1652-0_9.

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Wootton, R. J. "Biotic Factors and the Structure of Fish Communities." In Fish Ecology, 59–76. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-3832-1_3.

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Saqib, Najam Us, and Ishfaq Ahmad Wani. "Fish on the Footpath." In Vulnerable Communities in Neoliberal India, 57–78. London: Routledge, 2024. http://dx.doi.org/10.4324/9781003494065-4.

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Robertson, A. I., and S. J. M. Blaber. "Plankton, epibenthos and fish communities." In Tropical Mangrove Ecosystems, 173–224. Washington, D. C.: American Geophysical Union, 1992. http://dx.doi.org/10.1029/ce041p0173.

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Kennedy, C. R. "Helminth communities in freshwater fish: structured communities or stochastic assemblages?" In Parasite Communities: Patterns and Processes, 131–56. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0837-6_6.

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Scavia, Donald, and Gary L. Fahnenstiel. "From Picoplankton to Fish: Complex Interactions in the Great Lakes1." In Complex Interactions in Lake Communities, 85–97. New York, NY: Springer New York, 1988. http://dx.doi.org/10.1007/978-1-4612-3838-6_6.

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Kováč, Vladimír. "Current Status of Fish Communities in the Danube." In The Handbook of Environmental Chemistry, 359–88. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/698_2015_377.

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Zhou, Zhigang, Bin Yao, Jaime Romero, Paul Waines, Einar Ringø, Matthew Emery, Mark R. Liles, and Daniel L. Merrifield. "Methodological Approaches Used to Assess Fish Gastrointestinal Communities." In Aquaculture Nutrition, 101–27. Chichester, UK: John Wiley & Sons, Ltd, 2014. http://dx.doi.org/10.1002/9781118897263.ch5.

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Proctor, Heather C., and Neera Garga. "Red, distasteful water mites: did fish make them that way?" In Aquatic Mites from Genes to Communities, 127–47. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-94-017-0429-8_10.

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Álvarez-Cobelas, M. "Fish and Avian Communities: A Testimony of Wetland Degradation." In Ecology of Threatened Semi-Arid Wetlands, 197–212. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-9181-9_8.

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Conference papers on the topic "Fish communities"

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Stancheva, Mona, Mona Stancheva, Stanislava Georgieva, Stanislava Georgieva, Zlatina Peteva, Zlatina Peteva, Lubomir Makedonski, and Lubomir Makedonski. "POLYCHLORINATED BIPHENYLS IN EDIBLE FISH FROM BLACK SEA, BULGARIA." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b93b39d6a08.20094934.

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Polychlorinated biphenyls (PCBs) can still be a problem for the aquatic environment. Fish species are a suitable indicator for the environmental pollution monitoring because they concentrate pollutants in their tissues directly from water. Concentrations of PCBs were measured in marine fish, collected from Bulgarian Black Sea coast in order to monitor the dynamics of these pollutants in 2007, 2010 and 2015. The fish species: goby (Neogobius melanostomus), sprat (Sprattus sprattus sulinus), horse mackerel (Trachurus Mediterraneus ponticus) and grey mullet (Mugil cephalus) were chosen because of their characteristic feeding behavior. The PCBs were determined by gas chromatography system with mass spectrometry detection. The Total PCBs ranged from 93.8 to 513.3 ng/g lipid weight (in grey mullet and goby, respectively). Levels of PCBs in goby and grey mullet decreased in 2010 and 2015. In order to assess the safety of fish as food were calculated TEQ. They are determined by the results of dioxin - like (dl) PCBs. TEQs were calculated from 0.01 to 0.04 pg TEQ/g ww and did not exceed the EC limit of 3 pg TEQ/g ww. The levels of PCBs in fish from Bulgarian Black Sea were comparable to those found in neighboring seas.
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Stancheva, Mona, Mona Stancheva, Stanislava Georgieva, Stanislava Georgieva, Zlatina Peteva, Zlatina Peteva, Lubomir Makedonski, and Lubomir Makedonski. "POLYCHLORINATED BIPHENYLS IN EDIBLE FISH FROM BLACK SEA, BULGARIA." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.21610/conferencearticle_58b4315bdce00.

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Polychlorinated biphenyls (PCBs) can still be a problem for the aquatic environment. Fish species are a suitable indicator for the environmental pollution monitoring because they concentrate pollutants in their tissues directly from water. Concentrations of PCBs were measured in marine fish, collected from Bulgarian Black Sea coast in order to monitor the dynamics of these pollutants in 2007, 2010 and 2015. The fish species: goby (Neogobius melanostomus), sprat (Sprattus sprattus sulinus), horse mackerel (Trachurus Mediterraneus ponticus) and grey mullet (Mugil cephalus) were chosen because of their characteristic feeding behavior. The PCBs were determined by gas chromatography system with mass spectrometry detection. The Total PCBs ranged from 93.8 to 513.3 ng/g lipid weight (in grey mullet and goby, respectively). Levels of PCBs in goby and grey mullet decreased in 2010 and 2015. In order to assess the safety of fish as food were calculated TEQ. They are determined by the results of dioxin - like (dl) PCBs. TEQs were calculated from 0.01 to 0.04 pg TEQ/g ww and did not exceed the EC limit of 3 pg TEQ/g ww. The levels of PCBs in fish from Bulgarian Black Sea were comparable to those found in neighboring seas.
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Curto, Manuel, Ana Veríssimo, Filipe Ribeiro, Carlos D. Santos, Sissel Jentoft, Judite Alves, and Hugo F. Gante. "Application of eDNA Metagenomics to Describe Freshwater Fish Communities." In SIBIC 2022. Basel Switzerland: MDPI, 2022. http://dx.doi.org/10.3390/blsf2022013027.

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Ureche, Dorel, and Camelia Ureche. "Study of fish communities in the Siret river, and some tributaries (Bacau – Racaciuni section, 2012-2016)." In International symposium ”Functional ecology of animals” dedicated to the 70th anniversary from the birth of academician Ion Toderas. Institute of Zoology, Republic of Moldova, 2019. http://dx.doi.org/10.53937/9789975315975.84.

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The study was carried out in Bacau - Racaciuni section of Siret River, on the main course of the river and on some of its tributaries during the period 2012-2016. The aim of our research study was to assess the actual state of fish communities in the study area, and also to highlight significant changes in fish communities, based on the ecological analysis. The biological material was sampled by electrofishing from 16 sampling sites, and then it was determined and immediately released. The taxonomic analysis highlights the presence of 27 fish species, two of them being non-native: Psedorasbora parva, and Perccottus glenii. Some of the ecological indices were calculated, as well as biodiversity indices (Margalef, Menhinik, Shannon-Wiener), evenness (equitability), and fish stocks. The ecological analysis revealed some interesting aspects of fish communities’ structure and also of biodiversity.
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Mills, K. E., A. J. Allyn, L. L. Colburn, S. Eayrs, B. Franklin, T. Hartley, M. Hudson, et al. "Key Elements of Climate Adaptation for Marine Fishing Communities." In Impacts of a Changing Environment on the Dynamics of High-latitude Fish and Fisheries, edited by F. J. Mueter, M. R. Baker, S. C. Dressel, and A. B. Hollowed. Alaska Sea Grant, University of Alaska Fairbanks, 2018. http://dx.doi.org/10.4027/icedhlff.2018.05.

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Horwitz, R. J., T. Johnson, and W. C. Hession. "Fish Communities along an Urban Gradient: Influences of Riparian Vegetation." In World Water and Environmental Resources Congress 2001. Reston, VA: American Society of Civil Engineers, 2001. http://dx.doi.org/10.1061/40569(2001)443.

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Udu, Sumiman. "Lalo'a: Traditional Conservation Of Boronang Fish In Liya Indigenous Communities." In Proceedings of the First International Seminar on Languare, Literature, Culture and Education, ISLLCE, 15-16 November 2019, Kendari, Indonesia. EAI, 2020. http://dx.doi.org/10.4108/eai.15-11-2019.2296301.

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Slepchuk, Kira, Kira Slepchuk, Tatyana Khmara, Tatyana Khmara, Ekaterina Mankovskaya, and Ekaterina Mankovskaya. "EXTREME DETERIORATION OF WATER QUALITY AND FISH SUFFOCATION PHENOMENA IN THE MARINE ESTUARY." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b93c33e64c4.27067986.

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The factors that provoke fish suffocation in an estuary, namely: natural (small river runoff, high air and water temperature, water stratification) and anthropogenic (regulation of river, etc.) were marked. Taking into account these factors the calculations were carried out and the possible areas of the Dnieper-Bug estuary, where fish kill of different scale and genesis is found out were identified.
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Slepchuk, Kira, Kira Slepchuk, Tatyana Khmara, Tatyana Khmara, Ekaterina Mankovskaya, and Ekaterina Mankovskaya. "EXTREME DETERIORATION OF WATER QUALITY AND FISH SUFFOCATION PHENOMENA IN THE MARINE ESTUARY." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.21610/conferencearticle_58b4315dd0f08.

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The factors that provoke fish suffocation in an estuary, namely: natural (small river runoff, high air and water temperature, water stratification) and anthropogenic (regulation of river, etc.) were marked. Taking into account these factors the calculations were carried out and the possible areas of the Dnieper-Bug estuary, where fish kill of different scale and genesis is found out were identified.
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BEILICCI, Robert Florin, and Erika Beata Maria BEILICCI. ""Advance Hydraulic Calculation of Fish Ladders, Sebesel River, Romania."." In Air and Water – Components of the Environment 2022 Conference Proceedings. Casa Cărţii de Ştiinţă, 2022. http://dx.doi.org/10.24193/awc2022_06.

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Sebesel 2 hydropower development is located on the Sebesel river, in the outskirts of Borlova, Caraș - Severin County. The realization of the fish ladder will not influence the flow regime of surface or groundwater in the neighboring area. The fish ladder is dimensioned to allow the migration of the ichthyofauna upstream during the spawning period and the partial transit of the alluviums as well as the downstream provision of a servitude flow Q = 0.066 mc / s. The Sebeșel 2 hydroelectric power plant is a hydropower arrangement by shunt without accumulation lake. The plant has 2 (two) power groups equipped with Pelton turbines. The power delivered by MHC Sebesel 2 is 792.31 kW. The installed flow rate is 0.80 m3 / s; gross fall: 120 m; capture rate 573 mdMN. The fish ladders are of the technical ladder type with pools. The objectives of the studies were: to describe the qualitative and quantitative structure of benthic invertebrate and fish macro communities; assessment of the ecological status of the rivers in the areas of hydropower development; highlighting the presence of fish species of conservative interest and assessing the status of their populations. The methodology was carried out in accordance with the provisions of the Water Framework Directive, Annex V used considered the following: Assessment of the status of aquatic communities; description of the structure of fish communities; assessment of the ecological status of the river sectors. The study led to obtaining some essential information for the exploitation and maintenance of the micro-hydroelectric plant as well as the fish ladder.
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Reports on the topic "Fish communities"

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DMatthews, Elizabeth, Jamie Bechtel, Easkey Britton, Karl Morrison, and Caleb McClennen. A Gender Perspective on Securing Livelihoods and Nutrition in Fish-dependent Coastal Communities. Wildlife Conservarion Society, 2012. http://dx.doi.org/10.19121/2012.report.38398.

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Alexander, Timothy, and Ole Seehausen. Diversity, distribution and community composition of fish in perialpine lakes. "Projet Lac" synthesis report. Eawag, 2021. http://dx.doi.org/10.55408/eawag:24051.

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Projet Lac was a large project conducted by Eawag and the University of Bern to quantitatively survey, for the first time, whole-lake fish communities in the large and deep lakes in and around the European Alps using multiple, standardised sampling methods. Starting in 2010, in total 35 lakes were investigated across Switzerland, Italy, France, Germany and Austria, with more than 106 fish species recorded. This report brings together key findings, compares fish communities among lakes, investigates their relationship to environmental parameters, and provides an overview of drivers of biodiversity and community structure in this important ecosystem.
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Dodd, Hope, David Peitz, Gareth Rowell, Janice Hinsey, David Bowles, Lloyd Morrison, Michael DeBacker, Jennifer Haack-Gaynor, and Jefrey Williams. Protocol for Monitoring Fish Communities in Small Streams in the Heartland Inventory and Monitoring Network. National Park Service, April 2021. http://dx.doi.org/10.36967/nrr-2284726.

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Fish communities are an important component of aquatic systems and are good bioindicators of ecosystem health. Land use changes in the Midwest have caused sedimentation, erosion, and nutrient loading that degrades and fragments habitat and impairs water quality. Because most small wadeable streams in the Heartland Inventory and Monitoring Network (HTLN) have a relatively small area of their watersheds located within park boundaries, these streams are at risk of degradation due to adjacent land use practices and other anthropogenic disturbances. Shifts in the physical and chemical properties of aquatic systems have a dramatic effect on the biotic community. The federally endangered Topeka shiner (Notropis topeka) and other native fishes have declined in population size due to habitat degradation and fragmentation in Midwest streams. By protecting portions of streams on publicly owned lands, national parks may offer refuges for threatened or endangered species and species of conservation concern, as well as other native species. This protocol describes the background, history, justification, methodology, data analysis and data management for long-term fish community monitoring of wadeable streams within nine HTLN parks: Effigy Mounds National Monument (EFMO), George Washington Carver National Monument (GWCA), Herbert Hoover National Historic Site (HEHO), Homestead National Monument of America (HOME), Hot Springs National Park (HOSP), Pea Ridge National Military Park (PERI), Pipestone National Monument (PIPE), Tallgrass Prairie National Preserve (TAPR), and Wilson's Creek national Battlefield (WICR). The objectives of this protocol are to determine the status and long-term trends in fish richness, diversity, abundance, and community composition in small wadeable streams within these nine parks and correlate the long-term community data to overall water quality and habitat condition (DeBacker et al. 2005).
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Baker, J. P., S. A. Gherini, R. K. Munson, S. W. Christensen, C. T. Driscoll, J. Gallagher, R. M. Newton, K. H. Reckhow, and C. L. Schofield. Adirondack lakes survey: An interpretive analysis of fish communities and water chemistry, 1984--1987. Office of Scientific and Technical Information (OSTI), January 1990. http://dx.doi.org/10.2172/6173689.

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Brittain, Jeffrey. The Response of Zooplankton Communities in Montane Lakes of Different Fish Stocking Histories to Atmospheric Nitrogen Deposition Simulations. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.2391.

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Mitchell, Brian G., Amir Neori, Charles Yarish, D. Allen Davis, Tzachi Samocha, and Lior Guttman. The use of aquaculture effluents in spray culture for the production of high protein macroalgae for shrimp aqua-feeds. United States Department of Agriculture, January 2013. http://dx.doi.org/10.32747/2013.7597934.bard.

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The FAO has projected a doubling in world demand for seafood during the 21 ed from aquaculture of marine fish and shrimps fed primarily on fishmeal-based aquafeeds. However, current practices of high intensity monoculture of shrimp in coastal ponds and fish in offshore pens have been strongly criticized as being ecologically and socially unsustainable. This view derives from un- checked eutrophication of coastal marine ecosystems from fish farm effluents, and the destruction of coastal estuarine ecosystems by shrimp farm constructions, plus aquaculture’s reliance on wild-caught small fish - which are excellent food for humans, but instead are rendered into fishmeal and fish oil for formulating aquafeeds. Fishmeal-sparing and waste- reduction aquafeeds can only delay the time when fed aquaculture product are priced out of affordability for most consumers. Additionally, replacement of fishmeal protein and fish oil by terrestrial plant sources such as soybean meal and oil directly raises food costs for human communities in developing nations. New formulations incorporating sustainably-produced marine algal proteins and oils are growing in acceptance as viable and practical alternatives. This BARD collaborative research project investigated a sustainable water-sparing spray/drip culture method for producing high-protein marine macrophyte meals for incorporation into marine shrimp and fish diets. The spray culture work was conducted at laboratory-scale in the USA (UCSD-SIO) using selected Gracilariaand Ulvastrains isolated and supplied by UCONN, and outdoors at pilot-scale in Israel (IOLR-NCM) using local strains of Ulvasp., and nitrogen/phosphorus-enriched fish farm effluent to fertilize the spray cultures and produce seaweed biomass and meals containing up to 27% raw protein (dry weight content). Auburn University (USA) in consultation with TAMUS (USA) used the IOLR meals to formulate diets and conduct marine shrimp feeding trials, which resulted in mixed outcomes, indicating further work was needed to chemically identify and remove anti-nutritional elements present in the IOLR-produced seaweed meals.
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Dodd, Hope, J. Cribbs, David Bowles, Cameron Cheri, and Jeffrey Williams. Aquatic community monitoring at Effigy Mounds National Monument, 2008?2017. National Park Service, 2023. http://dx.doi.org/10.36967/2300634.

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Dousman Creek, located in northeastern Iowa, is a Class ?B? coldwater stream that supports a trout population and is listed among the Outstanding Iowa Waters (Iowa Department of Natural Resources 2010, 2016). The Heartland Inventory and Monitoring Network (Heartland Network) of the National Park Service (NPS) has been monitoring aquatic communities (fish and invertebrates) in Dousman Creek within Effigy Mounds National Monument (NM) since 2008. Corresponding physical habitat and water quality were also collected during biotic sampling. The objectives of this long-term monitoring program are to assess the status and trends in the biotic stream community and relate these trends to environmental variables. The purpose of this report is to summarize the baseline aquatic community data collected during three sampling events conducted from 2008 to 2017. The fish community was dominated by the intolerant cool/cold-water species Brown trout (Salmo trutta) and Mottled sculpin (Cottus bairdii) in 2008, while more tolerant white sucker (Catostomus comersonii) and Johnny darter (Etheostoma nigrum) were most abundant in 2014. During 2017, fish community composition was more evenly distributed among species present. Benthic invertebrate samples were dominated by the moderately intolerant mayfly genus Pseudocloeon and blackfly genus Simulium in 2008 and 2014, while the invertebrate samples in 2017 were dominated primarily by a tolerant, mayfly taxa (Baetis) and Oligochaetes. The abundance of aquatic invertebrates in 2017 was more than ten times lower than invertebrate abundance in 2008 and 2014. Water quality data collected by the Heartland Network did not indicate any of the five parameters (temperature, dissolved oxygen, pH, specific conductance, or turbidity) exceeded the Iowa Department of Natural Resources water quality standards, however the number of hourly measurements were low (4?20 measurements) depending on year sampled. Three years of data are currently insufficient to fully characterize the stream integrity of Dousman Creek based on fish and invertebrate communities. Continued long-term monitoring of Dousman Creek will allow for better assessment of the biotic integrity and overall quality of the stream.
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Bartolino, Valerio, Birgit Koehler, and Lena Bergström, eds. Climate effects on fish in Sweden : Species-Climate Information Sheets for 32 key taxa in marine and coastal waters. Department of Aquatic Resources, Swedish University of Agricultural Sciences, 2023. http://dx.doi.org/10.54612/a.4lmlt1tq5j.

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The purpose of this publication is to summarize the state of knowledge on the effects of environmental variability and climate change for individual species and stocks based on literature review, giving species-climate information for 32 key taxa in Swedish marine and coastal waters. The report is written in English. The extent and scale of recent changes in climate due to global warming is unprecedented and causes increasing effects on ecosystems. In oceans, ongoing warming leads to, for example, increased water temperatures, decreased ice cover and effects on hydrology and water circulation patterns that can in turn influence salinity. The environmental alterations affect species distribution, biology, and hence also the delivery of marine ecosystem services and human well-being. The results of this review on the effects of environmental variability and climate change on marine taxa are presented as species-climate information sheets designed in a user-friendly format aimed to enhance accessibility for professionals spanning different fields and roles, including e.g. scientific experts, NGOs affiliates and managers. The species-climate information sheets presented here cover 32 key taxa selected among the economically and ecologically most important coastal and marine fish and crustacean species in Swedish waters. The species-wise evaluations show that climate change leads to a wide range of effects on fish, reflecting variations in their biology and physiological tolerances. The review also highlights important data and knowledge gaps for each species and life stage. Despite the high variability and prevailing uncertainties, some general patterns appeared. On a general level, most fish species in Swedish marine and coastal waters are not expected to benefit from climate change, and many risks are identified to their potential for recruitment, growth and development. Boreal, marine and cold-adapted species would be disadvantaged at Swedish latitudes. However, fish of freshwater origin adapted to warmer temperature regimes could benefit to some extent in the Baltic Sea under a warming climate. Freshwater fish could also be benefitted under further decreasing salinity in the surface water in the Baltic Sea. The resulting effects on species will not only depend on the physiological responses, but also on how the feeding conditions for fish, prey availability, the quality of essential fish habitats and many other factors will develop. A wide range of ecological factors decisive for the development of fish communities are also affected by climate change but have not been explored here, where we focused on the direct effects of warming. The sensitivity and resilience of the fish species to climate change will also depend on their present and future health and biological status. Populations exposed to prolonged and intense fishing exploitation, or affected by environmental deterioration will most likely have a lower capacity to cope with climate change effects over time. For both the Baltic Sea and the North Sea, it is important to ensure continued work to update and improve the species-climate information sheets as results from new research become available. It can also be expected that new important and relevant biological information and improved climate scenarios will emerge continuously. Continued work is therefore important to update and refine the species-climate information sheets, help filling in currently identified knowledge gaps, and extend to other species not included here. Moreover, there is need to integrate this type of species-level information into analyses of the effects of climate change at the level of communities and ecosystems to support timely mitigation and adaptation responses to the challenges of the climate change.
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Ralph, Gina Paduano, Fred Sklar, Carlos Coronado, Matthew Schrader, Stephanie Verhulst, William Reilly, and Robert Kirby. Building elevation in mangrove communities : use of Regional Sediment Management to increase coastal wetland resilience to sea-level rise. Engineer Research and Development Center (U.S.), March 2024. http://dx.doi.org/10.21079/11681/48330.

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This Regional Sediment Management technical report outlines initial steps to implement a proof-of-concept physical model to develop demonstration-scale evidence that supports managed wetland transgression through sediment augmentation via a thin-layer placement strategy. The proof-of-concept physical model will evaluate the ability of thin-layer placement to increase elevation and enhance recruitment within coastal scrub mangrove wetlands most vulnerable to sea-level rise. The investigation sought to identify feasible project locations, sediment sources that included beneficial use of dredged material opportunities, and environmentally acceptable construction techniques. Results of this initial step will be used to secure funding to permit, construct, implement, and monitor the proof-of-concept physical model. The results of this initiative will inform and direct management measure development for the ongoing Biscayne Bay Southeastern Everglades Restoration Project, the only coastal component of the Comprehensive Everglades Restoration Plan and the only component with an obligation to increase habitat resilience. Results are applicable to areas throughout the Gulf, Atlantic, and Pacific Coasts of the United States where direct preservation, enhancement, and restoration of mangrove and other coastal wetland communities will build coastal resiliency, reduce storm hazards damage, and create habitat for a variety of fish and wildlife species, particularly as sea levels rise.
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Dodd, Hope, David Bowles, John Cribbs, Jeffrey Williams, Cameron Cheri, and Tani Hubbard. Aquatic community monitoring at Herbert Hoover National Historic Site, 2008?2017. National Park Service, 2024. http://dx.doi.org/10.36967/2303263.

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Land use changes that degrade water quality and stream habitat can negatively impact aquatic communities. Monitoring trends in aquatic community composition and habitat conditions is a robust way to assess stream integrity and health. Herbert Hoover National Historic Site (NHS) is in eastern Iowa where dominant land use consists of row-crop and grassland agriculture. A portion of an unnamed tributary of the West Branch of Wapsinonoc Creek, known as Hoover Creek, flows through the park. In 2008, the Heartland Inventory and Monitoring Network (Heartland Network) of the National Park Service (NPS) began monitoring aquatic communities (fish and invertebrates), physical habitat, and water quality at Hoover Creek within the park. This report summarizes four years of data to assess the baseline conditions of Hoover Creek within Herbert Hoover NHS. Aquatic invertebrate taxa richness ranged from 21 to 32 among all years monitored. Three of these taxa are sensitive to poor water quality and habitat conditions. The invertebrate community was dominated by true flies in the Chironomidae family, Oligochaete worms, and mayflies in the Baetidae family. These taxa are all tolerant of poor water quality and habitat conditions. However, in 2011, the sensitive caddisfly Ceratopsyche was also abundant. Mean Hilsenhoff Biotic Index values indicated the invertebrate community fluctuated over time, ranging from fairly poor in 2017 to good condition in 2011. Ten fish species were collected at Hoover Creek across the four years sampled with seven of those species found in all years. All fish species collected were either moderately tolerant or tolerant to poor habitat and water quality conditions; the community was dominated by johnny darter (Etheostoma nigrum), creek chub (Semotilus atromaculatus), and blacknose dace (Rhinichthys atratulus). Based on the Index of Biotic Integrity developed for Iowa streams, the fish community ranged from fair condition in 2008, 2014, and 2017 to good condition in 2011. Hoover Creek was found to have predominately fine to medium gravel substrate with high embeddedness, and banks were steep and tall and consisted of fine silt substrate. With the exception of turbidity after a rain event in 2008, water quality parameters were within state standards. The four years of stream biota data coupled with habitat data should form a good baseline for assessing changes or trends in the aquatic community and overall stream health of Hoover Creek.
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